首页 > 最新文献

African Journal of Agricultural and Resource Economics-AFJARE最新文献

英文 中文
Analyse de l’efficacité allocative des ressources utilisées dans les petites exploitations de riz de bas-fond au centre-ouest de la Côte d’Ivoire 科特迪瓦中西部小型低地水稻农场资源分配效率分析
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2022-12-30 DOI: 10.53936/afjare.2022.17(4).19
Innocent Daniel Gniza
Cette étude analyse l’efficacité des producteurs de riz dans l’allocation des ressources dont ils disposent pour la production en recueillant des données transversales auprès de 255 producteurs dans le Centre-Ouest de la Côte d’Ivoire. Une fonction de type Cobb-Douglass est utilisée pour examiner les déterminants de la production et les élasticités issues des résultats de l’estimation par les moindres carrées ordinaires (MCO) sont ensuite utilisées dans l'approche de la valeur marginale du produit et du coût marginal du facteur pour déterminer si les agriculteurs répartissent efficacement leurs ressources ou non. Les résultats indiquent que la semence a un effet positif sur la production mais est sous-utilisée tandis que la main d’œuvre a un effet positif sur la production mais est surutilisée par les producteurs. Le matériel agricole quant à lui, a un effet négatif non significatif sur la production et est surutilisé par les producteurs. L’étude recommande un programme de formation au niveau des producteurs en vue d’améliorer leur capacité de gestion des ressources de production et la mise en place de programme de production de semence de qualité afin d’accroitre les rendements.
本研究通过从科特迪瓦中西部255家生产商收集横截面数据,分析了水稻生产商分配生产资源的效率。Cobb-Douglass函数用于检查生产的决定因素,然后将普通最小二乘(MCO)估计结果产生的弹性用于边际产品价值和边际要素成本方法,以确定农民是否有效分配资源。结果表明,种子对生产有积极影响,但使用不足,而劳动力对生产有正面影响,但生产者过度使用。农业设备对生产没有重大负面影响,生产者过度使用。该研究建议在生产者一级开展培训方案,以提高他们管理生产资源的能力,并制定高质量的种子生产方案,以提高产量。
{"title":"Analyse de l’efficacité allocative des ressources utilisées dans les petites exploitations de riz de bas-fond au centre-ouest de la Côte d’Ivoire","authors":"Innocent Daniel Gniza","doi":"10.53936/afjare.2022.17(4).19","DOIUrl":"https://doi.org/10.53936/afjare.2022.17(4).19","url":null,"abstract":"Cette étude analyse l’efficacité des producteurs de riz dans l’allocation des ressources dont ils disposent pour la production en recueillant des données transversales auprès de 255 producteurs dans le Centre-Ouest de la Côte d’Ivoire. Une fonction de type Cobb-Douglass est utilisée pour examiner les déterminants de la production et les élasticités issues des résultats de l’estimation par les moindres carrées ordinaires (MCO) sont ensuite utilisées dans l'approche de la valeur marginale du produit et du coût marginal du facteur pour déterminer si les agriculteurs répartissent efficacement leurs ressources ou non. Les résultats indiquent que la semence a un effet positif sur la production mais est sous-utilisée tandis que la main d’œuvre a un effet positif sur la production mais est surutilisée par les producteurs. Le matériel agricole quant à lui, a un effet négatif non significatif sur la production et est surutilisé par les producteurs. L’étude recommande un programme de formation au niveau des producteurs en vue d’améliorer leur capacité de gestion des ressources de production et la mise en place de programme de production de semence de qualité afin d’accroitre les rendements.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44622253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Resilience capacities and implications for food security in Zimbabwe 津巴布韦的复原能力及其对粮食安全的影响
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2022-12-30 DOI: 10.53936/afjare.2022.17(4).20
Mark Manyanga, C. Murendo, T. Pedzisa, Vine Mutyasira, Richard Ndou
There is an emerging body of studies assessing the influence of resilience on household food security in developing countries. Yet no study has systematically analysed this theme in Zimbabwe, an area that we address. Data was collected from 331 randomly selected farm households in four districts of Zimbabwe. Factor analysis was used to compute resilience capacities. Poisson regression was used for model estimations. Assets, market diversity and social capital increased dietary diversity by 7.5%, 3.6% and 2.9% respectively. Interventions that enhance asset accumulation, for example incomegenerating activities, should be promoted. Promoting farmer groups and collective actions are important to strengthen social capital. Adaptive and absorptive capacity increases dietary diversity by 5.9% and 5.4% respectively. Household resilience is positively associated with dietary diversity. The public and private sectors and civil society need to promote interventions that build adaptive, absorptive, and overall resilience capacity of farming households to enhance food security.
正在出现一系列研究,评估复原力对发展中国家家庭粮食安全的影响。然而,没有任何研究系统地分析津巴布韦的这一主题,我们正在处理这一领域。数据是从津巴布韦四个地区的331个随机选择的农户中收集的。因子分析用于计算弹性能力。泊松回归用于模型估计。资产、市场多样性和社会资本分别使饮食多样性增加了7.5%、3.6%和2.9%。应促进加强资产积累的干预措施,例如创收活动。促进农民团体和集体行动对于加强社会资本非常重要。适应性和吸收能力分别使饮食多样性增加5.9%和5.4%。家庭复原力与饮食多样性呈正相关。公共和私营部门以及民间社会需要促进干预措施,建立农户的适应、吸收和整体恢复能力,以加强粮食安全。
{"title":"Resilience capacities and implications for food security in Zimbabwe","authors":"Mark Manyanga, C. Murendo, T. Pedzisa, Vine Mutyasira, Richard Ndou","doi":"10.53936/afjare.2022.17(4).20","DOIUrl":"https://doi.org/10.53936/afjare.2022.17(4).20","url":null,"abstract":"There is an emerging body of studies assessing the influence of resilience on household food security in developing countries. Yet no study has systematically analysed this theme in Zimbabwe, an area that we address. Data was collected from 331 randomly selected farm households in four districts of Zimbabwe. Factor analysis was used to compute resilience capacities. Poisson regression was used for model estimations. Assets, market diversity and social capital increased dietary diversity by 7.5%, 3.6% and 2.9% respectively. Interventions that enhance asset accumulation, for example incomegenerating activities, should be promoted. Promoting farmer groups and collective actions are important to strengthen social capital. Adaptive and absorptive capacity increases dietary diversity by 5.9% and 5.4% respectively. Household resilience is positively associated with dietary diversity. The public and private sectors and civil society need to promote interventions that build adaptive, absorptive, and overall resilience capacity of farming households to enhance food security.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41383054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Does Rwanda’s flagship microcredit programme boost agriculture and incomes? 卢旺达的旗舰小额信贷计划是否能促进农业和收入?
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2022-09-30 DOI: 10.53936/afjare.2022.17(3).16
Jonathan Haughton
One of the three components of Rwanda’s flagship anti-poverty programme, Vision 2020 Umurenge (VUP), is the provision of credit to relatively poor households, nearly all of them farmers. In this paper we estimate the impact of the programme using high-quality household survey data from 2013/2014 and 2016/2017. Using the panel data, the double-difference model shows that households that borrow increase their stock of livestock. This is confirmed by the cross-section inverse probability-weighted regression adjustment models, which also find that VUP borrowing leads to more purchases of farm inputs, greater consumption (especially of home-produced food), lower poverty, and greater secondary school enrolment, but not to more hours worked. While VUP loans account for only 2% of the value of microcredit in Rwanda, they do help fill a need for production credit at a scale large enough to be able to help households appreciably increase their agricultural and other assets, and ultimately their income.
卢旺达旗舰反贫困计划“2020年愿景”的三个组成部分之一是向相对贫困的家庭提供信贷,几乎所有家庭都是农民。在本文中,我们使用2013/2014年和2016/2017年的高质量家庭调查数据来估计该计划的影响。使用面板数据,双差模型显示,借款的家庭增加了牲畜库存。横截面逆概率加权回归调整模型也证实了这一点,该模型还发现,VUP借款会导致更多的农业投入品购买、更多的消费(尤其是家庭生产的食品)、更低的贫困和更多的中学入学率,但不会导致更多的工作时间。虽然VUP贷款仅占卢旺达小额信贷价值的2%,但它们确实有助于满足生产信贷的需求,其规模足以帮助家庭大幅增加农业和其他资产,并最终增加收入。
{"title":"Does Rwanda’s flagship microcredit programme boost agriculture and incomes?","authors":"Jonathan Haughton","doi":"10.53936/afjare.2022.17(3).16","DOIUrl":"https://doi.org/10.53936/afjare.2022.17(3).16","url":null,"abstract":"One of the three components of Rwanda’s flagship anti-poverty programme, Vision 2020 Umurenge (VUP), is the provision of credit to relatively poor households, nearly all of them farmers. In this paper we estimate the impact of the programme using high-quality household survey data from 2013/2014 and 2016/2017. Using the panel data, the double-difference model shows that households that borrow increase their stock of livestock. This is confirmed by the cross-section inverse probability-weighted regression adjustment models, which also find that VUP borrowing leads to more purchases of farm inputs, greater consumption (especially of home-produced food), lower poverty, and greater secondary school enrolment, but not to more hours worked. While VUP loans account for only 2% of the value of microcredit in Rwanda, they do help fill a need for production credit at a scale large enough to be able to help households appreciably increase their agricultural and other assets, and ultimately their income.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46303667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of targeted fertiliser subsidy on poverty reduction in Togo 多哥定向化肥补贴对减贫的影响
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2022-09-30 DOI: 10.53936/afjare.2022.17(2).13
Ismaïla Ganiyou, Koffi Yovo
The reintroduction of innovative forms of input subsidies in sub-Saharan Africa (SSA) following the food crisis of 2008 raises concerns about their effectiveness in the fight against poverty. In this context, this paper examines the effect of the targeted fertiliser subsidy implemented in Togo from 2017 to 2019. For this purpose, the propensity score matching and instrumental variables regression approaches were used to control for potential selection and endogeneity bias. Nationwide crosssectional survey data covering 2 319 smallholder farmers in Togo suggests that participation in the targeted fertiliser subsidy programme significantly improved beneficiaries’ poverty status through increased income, leading to a decline in poverty incidence, gap and severity. However, the magnitude of the effect is very small compared to that in some other West African countries. Therefore, to enhance the effect of targeted subsidy policy on income and poverty status, there is a need to improve the rate and composition of the subsidy.
2008年粮食危机后,撒哈拉以南非洲重新引入了创新形式的投入补贴,这引发了人们对其在消除贫困方面的有效性的担忧。在此背景下,本文考察了2017年至2019年多哥实施的定向化肥补贴的效果。为此,使用倾向得分匹配和工具变量回归方法来控制潜在选择和内生性偏差。覆盖多哥2319名小农户的全国横断面调查数据表明,参与定向化肥补贴计划通过增加收入显著改善了受益人的贫困状况,从而降低了贫困发生率、差距和严重程度。然而,与其他一些西非国家相比,这种影响的程度非常小。因此,为了提高定向补贴政策对收入和贫困状况的影响,有必要提高补贴的比例和组成。
{"title":"Effect of targeted fertiliser subsidy on poverty reduction in Togo","authors":"Ismaïla Ganiyou, Koffi Yovo","doi":"10.53936/afjare.2022.17(2).13","DOIUrl":"https://doi.org/10.53936/afjare.2022.17(2).13","url":null,"abstract":"The reintroduction of innovative forms of input subsidies in sub-Saharan Africa (SSA) following the food crisis of 2008 raises concerns about their effectiveness in the fight against poverty. In this context, this paper examines the effect of the targeted fertiliser subsidy implemented in Togo from 2017 to 2019. For this purpose, the propensity score matching and instrumental variables regression approaches were used to control for potential selection and endogeneity bias. Nationwide crosssectional survey data covering 2 319 smallholder farmers in Togo suggests that participation in the targeted fertiliser subsidy programme significantly improved beneficiaries’ poverty status through increased income, leading to a decline in poverty incidence, gap and severity. However, the magnitude of the effect is very small compared to that in some other West African countries. Therefore, to enhance the effect of targeted subsidy policy on income and poverty status, there is a need to improve the rate and composition of the subsidy.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49246583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessing the adoption rates of improved technology in traditional poultry farming: Evidence from rural Togo 评估改进技术在传统家禽养殖中的采用率:来自多哥农村的证据
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2022-09-30 DOI: 10.53936/afjare.2022.17(3).14
Mawussi Kossivi Soviadan, Z. Kubik, Anselm Anibueze Enete, Chukwuemeka Uzoma Okoye
The adoption of improved agricultural technologies is known to significantly improve incomes, create more wealth, alleviate poverty and contribute to rural development in many developing countries. The Government of Togo, through the National Programme for Agricultural Investment and Food Security (PNIASAN) and the Agricultural Sector Support Project (PASA), and with financial support from the World Bank and help from the Food and Agriculture Organization of the United Nations (FAO), provides assistance to smallholder farmers in improved technology adoption in traditional poultry farming (ITTPF) for wealth creation, food security and poverty alleviation. However, for any technology or emerging agricultural practices, awareness and exposure are necessary conditions for their adoption. And because these two factors are not distributed randomly in the population of potential adopters, not taking them into account will lead to estimates of population adoption rates that are not informative of the true demand for the technology, and to inconsistent estimates of the parameters of the adoption model. In this study, we evaluate the adoption rates of ITTPF among farmers in Togo. Data was collected from 400 farmers in 2014, prior to the introduction of ITTPF, and again five years later. This data was then analysed using inverse propensity score weighting and parametric estimation of adoption regression models. The results of the estimates indicate that the average treatment effect (𝐴𝑇𝐸), which represents the mean potential adoption rate of the population, is 57%, the average treatment effect on the treated (𝐴𝑇𝐸𝑇), which represents the mean potential adoption rate in the exposed subpopulation, is 60%, the population mean joint exposure and adoption rate (𝐽𝐸𝐴) is 13%, and the population selection bias (𝑃𝑆𝐵) is 3%. The sample adoption rate (𝐽𝐸𝐴) implies a population adoption gap of -47% due to a lack of exposure and adoption by a sufficient size of the population. The 𝑃𝑆𝐵 is insignificant and indicates that all the sampled farmers had an almost equal opportunity of adopting ITTPF. The study reveals that the sample adoption rate does not consistently estimate the true population adoption rate. Hence, controlling for non-exposure and selection biases is a perquisite to acquiring consistent estimates of ITTPF adoption rates. The findings indicate a relatively high supply-demand gap for ITTPF that justifies investment in its further dissemination and adoption in Togo for optimal positive impact on potential outcomes and the welfare of farmers.
在许多发展中国家,采用改良的农业技术可以显著提高收入、创造更多财富、减轻贫困并促进农村发展。多哥政府通过国家农业投资和粮食安全计划(PNIASAN)和农业部门支持项目(PASA),并在世界银行的财政支持和联合国粮食及农业组织(粮农组织)的帮助下,向小农提供援助,以改进传统家禽养殖技术的采用,以创造财富、粮食安全和减贫。然而,对于任何技术或新兴的农业做法,认识和接触是采用它们的必要条件。由于这两个因素在潜在的采用者群体中不是随机分布的,不考虑它们将导致对人口采用率的估计不能提供对技术的真实需求的信息,并且对采用者模型参数的估计不一致。在本研究中,我们评估了ITTPF在多哥农民中的采用率。2014年,在引入ITTPF之前,从400名农民那里收集了数据,并在五年后再次收集了数据。然后使用反倾向得分加权和采用回归模型的参数估计对这些数据进行分析。估计结果表明,平均治疗效果(变量𝑇)代表种群的平均潜在采用率为57%,对被治疗者的平均治疗效果(变量𝑇𝑇)代表暴露亚种群的平均潜在采用率为60%,种群的平均联合暴露和采用率(变量𝐽)为13%,种群选择偏差(变量𝑆)为3%。样本采用率(𝐽 变量)意味着由于缺乏足够规模的人口的接触和采用,人口采用率差距为-47%。结果表明,所有样本农户采用ITTPF的机会基本相等。研究表明,样本采用率并不能一致地估计真实的人口采用率。因此,控制非暴露和选择偏差是获得一致的ITTPF采用率估计的先决条件。研究结果表明,ITTPF存在相对较高的供需缺口,因此有理由投资于其在多哥的进一步推广和采用,以对潜在结果和农民福利产生最佳的积极影响。
{"title":"Assessing the adoption rates of improved technology in traditional poultry farming: Evidence from rural Togo","authors":"Mawussi Kossivi Soviadan, Z. Kubik, Anselm Anibueze Enete, Chukwuemeka Uzoma Okoye","doi":"10.53936/afjare.2022.17(3).14","DOIUrl":"https://doi.org/10.53936/afjare.2022.17(3).14","url":null,"abstract":"The adoption of improved agricultural technologies is known to significantly improve incomes, create more wealth, alleviate poverty and contribute to rural development in many developing countries. The Government of Togo, through the National Programme for Agricultural Investment and Food Security (PNIASAN) and the Agricultural Sector Support Project (PASA), and with financial support from the World Bank and help from the Food and Agriculture Organization of the United Nations (FAO), provides assistance to smallholder farmers in improved technology adoption in traditional poultry farming (ITTPF) for wealth creation, food security and poverty alleviation. However, for any technology or emerging agricultural practices, awareness and exposure are necessary conditions for their adoption. And because these two factors are not distributed randomly in the population of potential adopters, not taking them into account will lead to estimates of population adoption rates that are not informative of the true demand for the technology, and to inconsistent estimates of the parameters of the adoption model. In this study, we evaluate the adoption rates of ITTPF among farmers in Togo. Data was collected from 400 farmers in 2014, prior to the introduction of ITTPF, and again five years later. This data was then analysed using inverse propensity score weighting and parametric estimation of adoption regression models. The results of the estimates indicate that the average treatment effect (𝐴𝑇𝐸), which represents the mean potential adoption rate of the population, is 57%, the average treatment effect on the treated (𝐴𝑇𝐸𝑇), which represents the mean potential adoption rate in the exposed subpopulation, is 60%, the population mean joint exposure and adoption rate (𝐽𝐸𝐴) is 13%, and the population selection bias (𝑃𝑆𝐵) is 3%. The sample adoption rate (𝐽𝐸𝐴) implies a population adoption gap of -47% due to a lack of exposure and adoption by a sufficient size of the population. The 𝑃𝑆𝐵 is insignificant and indicates that all the sampled farmers had an almost equal opportunity of adopting ITTPF. The study reveals that the sample adoption rate does not consistently estimate the true population adoption rate. Hence, controlling for non-exposure and selection biases is a perquisite to acquiring consistent estimates of ITTPF adoption rates. The findings indicate a relatively high supply-demand gap for ITTPF that justifies investment in its further dissemination and adoption in Togo for optimal positive impact on potential outcomes and the welfare of farmers.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45347308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The influence of women’s empowerment on poverty reduction: A case of smallholder sugarcane farmers in western Kenya 妇女赋权对减贫的影响:肯尼亚西部甘蔗小农的案例
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2022-09-30 DOI: 10.53936/afjare.2022.17(3).17
Kenedy Lumet, R. Gitau, G. Owuor
This study uses primary data from smallholder sugarcane farmers in Kenya to investigate how women’s empowerment affects household poverty. Instrumental-variable tobit (IV tobit) was used to determine the causality between women’s empowerment and household poverty. The results reveal that poverty levels in households with empowered women are low compared to households without such women. Besides, education level, credit access, market access, land size, and crop and income diversification contributed positively to women’s empowerment and to the reduction in household poverty. The domains that contribute significantly to women’s disempowerment in sugarcane farming are income, work balance and leadership. These results suggest that strengthening women’s control over income and their leadership position in society are vital domains that should be targeted by rural development interventions to improve the livelihoods of smallholder women sugarcane farmers. In addition, there is a need to intensify crop diversification and increase women’s access to markets.
本研究使用来自肯尼亚甘蔗小农的原始数据来调查妇女赋权如何影响家庭贫困。工具变量tobit (IV tobit)用于确定妇女赋权与家庭贫困之间的因果关系。结果显示,与没有妇女赋权的家庭相比,有妇女赋权的家庭的贫困水平较低。此外,教育水平、信贷获取、市场准入、土地面积、作物和收入多样化对妇女赋权和减少家庭贫困作出了积极贡献。导致妇女在甘蔗种植中被剥夺权力的主要领域是收入、工作平衡和领导能力。这些结果表明,加强妇女对收入的控制及其在社会中的领导地位是农村发展干预措施应针对的重要领域,以改善女性甘蔗小农的生计。此外,还需要加强作物多样化,增加妇女进入市场的机会。
{"title":"The influence of women’s empowerment on poverty reduction: A case of smallholder sugarcane farmers in western Kenya","authors":"Kenedy Lumet, R. Gitau, G. Owuor","doi":"10.53936/afjare.2022.17(3).17","DOIUrl":"https://doi.org/10.53936/afjare.2022.17(3).17","url":null,"abstract":"This study uses primary data from smallholder sugarcane farmers in Kenya to investigate how women’s empowerment affects household poverty. Instrumental-variable tobit (IV tobit) was used to determine the causality between women’s empowerment and household poverty. The results reveal that poverty levels in households with empowered women are low compared to households without such women. Besides, education level, credit access, market access, land size, and crop and income diversification contributed positively to women’s empowerment and to the reduction in household poverty. The domains that contribute significantly to women’s disempowerment in sugarcane farming are income, work balance and leadership. These results suggest that strengthening women’s control over income and their leadership position in society are vital domains that should be targeted by rural development interventions to improve the livelihoods of smallholder women sugarcane farmers. In addition, there is a need to intensify crop diversification and increase women’s access to markets.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45103605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impact of climate-smart maize varieties on household income among smallholder farmers in Kenya: The case of Embu County 气候智能型玉米品种对肯尼亚小农家庭收入的影响:以恩布县为例
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2022-09-30 DOI: 10.53936/afjare.2022.17(3).15
John K. Wanjira, J. Mburu, F. Nzuve, S. Makokha, R. Emongor, Catheline Taracha
Variability in climate and debility in soil fertility affect agrarian production, especially in subSaharan Africa, and thus threaten food security. This has prompted the seed sector to introduce various varieties of climate-smart maize in Kenya and release them in the market. In contrast, there is little experiential insight into how the adoption of these varieties by small-scale farmers affects their household income. This paper used cross-sectional data to evaluate the implications of climatesmart maize varieties on small-scale farmers’ household income in Embu County in Kenya. The endogenous switching regression model was used to estimate the influence of climate-smart maize adoption on household income. Based on survey data obtained from 550 maize farmers in Embu County, the results show that age, education, land under climate-smart maize varieties, and distance to the market positively influenced the income level of the adopters. The findings further reveal that the decision to adopt the climate-smart maize varieties had a significant positive effect of about 60% on farmers’ household income. It therefore can be concluded from the results that the adopters would gain more from technology adoption. These results recommend policies that stimulate the adoption of current climate-smart varieties, with an emphasis on adoption by youths, to create more jobs and increase household income to reduce poverty among smallholder farmers in Kenya
气候的可变性和土壤肥力的脆弱性影响农业生产,特别是在撒哈拉以南非洲,从而威胁到粮食安全。这促使种子部门在肯尼亚引入各种气候智能玉米品种,并将其投放市场。相比之下,对于小规模农民采用这些品种如何影响其家庭收入,几乎没有经验见解。本文利用横断面数据评估了气候智能玉米品种对肯尼亚恩布县小规模农户家庭收入的影响。采用内生切换回归模型来估计气候智能玉米的采用对家庭收入的影响。基于对恩布县550名玉米种植户的调查数据,结果表明,年龄、教育程度、气候智能玉米品种下的土地以及与市场的距离对采用者的收入水平产生了积极影响。研究结果进一步表明,采用气候智能玉米品种的决定对农民的家庭收入产生了约60%的显著积极影响。因此,从结果可以得出结论,采用者将从技术采用中获得更多收益。这些结果建议制定政策,鼓励采用当前的气候智能型品种,重点是年轻人采用,以创造更多就业机会,增加家庭收入,从而减少肯尼亚小农户的贫困
{"title":"Impact of climate-smart maize varieties on household income among smallholder farmers in Kenya: The case of Embu County","authors":"John K. Wanjira, J. Mburu, F. Nzuve, S. Makokha, R. Emongor, Catheline Taracha","doi":"10.53936/afjare.2022.17(3).15","DOIUrl":"https://doi.org/10.53936/afjare.2022.17(3).15","url":null,"abstract":"Variability in climate and debility in soil fertility affect agrarian production, especially in subSaharan Africa, and thus threaten food security. This has prompted the seed sector to introduce various varieties of climate-smart maize in Kenya and release them in the market. In contrast, there is little experiential insight into how the adoption of these varieties by small-scale farmers affects their household income. This paper used cross-sectional data to evaluate the implications of climatesmart maize varieties on small-scale farmers’ household income in Embu County in Kenya. The endogenous switching regression model was used to estimate the influence of climate-smart maize adoption on household income. Based on survey data obtained from 550 maize farmers in Embu County, the results show that age, education, land under climate-smart maize varieties, and distance to the market positively influenced the income level of the adopters. The findings further reveal that the decision to adopt the climate-smart maize varieties had a significant positive effect of about 60% on farmers’ household income. It therefore can be concluded from the results that the adopters would gain more from technology adoption. These results recommend policies that stimulate the adoption of current climate-smart varieties, with an emphasis on adoption by youths, to create more jobs and increase household income to reduce poverty among smallholder farmers in Kenya","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43899407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Labour-saving technologies mitigate the effect of women’s agriculture time-use constraints on stunting in rural Uganda 节省劳力的技术减轻了乌干达农村妇女农业时间使用限制对发育迟缓的影响
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2022-09-30 DOI: 10.53936/afjare.2022.17(3).18
Racheal Namulondo, B. Bashaasha
Women’s time allocation is a dimension of women’s empowerment in agriculture, and is recognised as a pathway through which agriculture can affect child nutritional status in developing countries. Longer hours of farm work can potentially increase women’s time constraints, reducing the time allocated to child-caring responsibilities and raising the risk of poor child nutritional status. Using a three-wave household panel dataset from the Feed the Future Innovation Lab on Nutrition surveys in the north and southwest of Uganda, we tested the hypothesis that the negative effect of women’s agriculture time-use constraints on child stunting is mitigated for households that use labour or timesaving agricultural technologies (LSATs). The results show a positive and significant association between the number of hours per day that women spend on agricultural work and the risk of stunting in children aged zero to 23 months who live in households that do not use animal traction for ploughing. However, this association is statistically insignificant, and even turns negative for households that adopted the labour-saving technology. Our findings indicate that LSATs have the potential to lessen a household’s agricultural workload, giving mothers more child-caring time, and hence improving child nutritional status. Therefore, agriculture could have better nutritional outcomes if policies and programmes were designed to have interventions that reduce the workload in farming activities and thus reduce pressure on women’s time.
妇女的时间分配是妇女在农业中获得权力的一个方面,并被认为是农业可以影响发展中国家儿童营养状况的一个途径。较长的农活时间可能会增加妇女的时间限制,减少分配给照顾儿童责任的时间,并增加儿童营养状况不良的风险。我们使用来自乌干达北部和西南部营养保障未来创新实验室调查的三波家庭面板数据集,验证了这样一个假设:对于使用劳动力或节省时间的农业技术(LSATs)的家庭来说,妇女农业时间限制对儿童发育迟缓的负面影响得到了缓解。研究结果显示,生活在不使用动物牵引犁地的家庭中的0至23个月大的儿童,她们每天花在农业工作上的小时数与发育迟缓的风险之间存在显著正相关。然而,这种关联在统计上是不显著的,甚至在采用节省劳动力技术的家庭中变为负相关。我们的研究结果表明,lsat有可能减轻家庭的农业工作量,给母亲更多的照顾孩子的时间,从而改善儿童的营养状况。因此,如果在制定政策和规划时采取干预措施,减少农业活动的工作量,从而减少对妇女时间的压力,农业就可以取得更好的营养成果。
{"title":"Labour-saving technologies mitigate the effect of women’s agriculture time-use constraints on stunting in rural Uganda","authors":"Racheal Namulondo, B. Bashaasha","doi":"10.53936/afjare.2022.17(3).18","DOIUrl":"https://doi.org/10.53936/afjare.2022.17(3).18","url":null,"abstract":"Women’s time allocation is a dimension of women’s empowerment in agriculture, and is recognised as a pathway through which agriculture can affect child nutritional status in developing countries. Longer hours of farm work can potentially increase women’s time constraints, reducing the time allocated to child-caring responsibilities and raising the risk of poor child nutritional status. Using a three-wave household panel dataset from the Feed the Future Innovation Lab on Nutrition surveys in the north and southwest of Uganda, we tested the hypothesis that the negative effect of women’s agriculture time-use constraints on child stunting is mitigated for households that use labour or timesaving agricultural technologies (LSATs). The results show a positive and significant association between the number of hours per day that women spend on agricultural work and the risk of stunting in children aged zero to 23 months who live in households that do not use animal traction for ploughing. However, this association is statistically insignificant, and even turns negative for households that adopted the labour-saving technology. Our findings indicate that LSATs have the potential to lessen a household’s agricultural workload, giving mothers more child-caring time, and hence improving child nutritional status. Therefore, agriculture could have better nutritional outcomes if policies and programmes were designed to have interventions that reduce the workload in farming activities and thus reduce pressure on women’s time.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45167138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Is cowpea a ‘women’s crop’ in Mali? Implications for value chain development 豇豆是马里的“妇女作物”吗?对价值链发展的影响
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2022-06-30 DOI: 10.53936/afjare.2022.17(2).11
M. Smale, V. Thériault, Andrea M. Allen, M. Sissoko
Cowpea, which is produced primarily in West Africa, is valued locally for its agronomic benefits in dryland farming, nutritional content, and contribution to the livelihoods of farming families. Many feel that more investment in cowpea research and development is needed for the crop to achieve its economic potential. Cowpea has long been labelled a ‘women’s crop’. We tested whether this is the case in Mali by exploring five indicators with a combination of primary and secondary databases, and interpreting our results in the context of the regional literature. We conclude that, in Mali, cowpea is better characterised as a ‘women’s enterprise’. Men are more likely than women to plant cowpea as either a primary or secondary crop and tend to plant larger areas, with cowpea intercropped. In drier agro-ecologies, women are more likely to grow cowpea than other crops. Although subsample sizes are very small, women cowpea growers appear to earn more on average from selling the harvest from their individual plots than do men. Women represent 99% of traders of processed cowpea products in the open-air markets we surveyed. In the production segment of the value chain, investments to facilitate women’s access to improved cowpea seed and local markets would support their commercial orientation. Investments in women’s trade in processed cowpea products, including the provision of credit, storage, and training in organisational capacity, would enhance their incomes and their livelihoods.
豇豆主要产于西非,因其在旱地农业中的农艺效益、营养成分以及对农业家庭生计的贡献而在当地受到重视。许多人认为,需要对豇豆的研发进行更多投资,才能发挥其经济潜力。长期以来,豇豆一直被称为“女性作物”。我们通过结合一级和二级数据库探索五个指标,并在地区文献的背景下解释我们的结果,来测试马里的情况是否如此。我们得出的结论是,在马里,豇豆被更好地描述为“女性企业”。男性比女性更有可能将豇豆作为主要或次要作物种植,并倾向于种植更大面积的豇豆间作。在干旱的农业生态中,妇女比其他作物更有可能种植豇豆。尽管子样本的规模很小,但女性豇豆种植者从出售各自地块的收成中获得的平均收入似乎比男性高。在我们调查的露天市场上,女性占加工豇豆产品贸易商的99%。在价值链的生产环节,为促进妇女获得改良豇豆种子和当地市场而进行的投资将支持她们的商业定位。对妇女加工豇豆产品贸易的投资,包括提供信贷、储存和组织能力培训,将提高她们的收入和生计。
{"title":"Is cowpea a ‘women’s crop’ in Mali? Implications for value chain development","authors":"M. Smale, V. Thériault, Andrea M. Allen, M. Sissoko","doi":"10.53936/afjare.2022.17(2).11","DOIUrl":"https://doi.org/10.53936/afjare.2022.17(2).11","url":null,"abstract":"Cowpea, which is produced primarily in West Africa, is valued locally for its agronomic benefits in dryland farming, nutritional content, and contribution to the livelihoods of farming families. Many feel that more investment in cowpea research and development is needed for the crop to achieve its economic potential. Cowpea has long been labelled a ‘women’s crop’. We tested whether this is the case in Mali by exploring five indicators with a combination of primary and secondary databases, and interpreting our results in the context of the regional literature. We conclude that, in Mali, cowpea is better characterised as a ‘women’s enterprise’. Men are more likely than women to plant cowpea as either a primary or secondary crop and tend to plant larger areas, with cowpea intercropped. In drier agro-ecologies, women are more likely to grow cowpea than other crops. Although subsample sizes are very small, women cowpea growers appear to earn more on average from selling the harvest from their individual plots than do men. Women represent 99% of traders of processed cowpea products in the open-air markets we surveyed. In the production segment of the value chain, investments to facilitate women’s access to improved cowpea seed and local markets would support their commercial orientation. Investments in women’s trade in processed cowpea products, including the provision of credit, storage, and training in organisational capacity, would enhance their incomes and their livelihoods.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49327926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Economic analysis of yellow passion fruit production in southeastern Nigeria under different soil fertility management 尼日利亚东南部不同土壤肥力管理下黄百香果生产的经济分析
IF 0.6 Q3 Agricultural and Biological Sciences Pub Date : 2022-06-30 DOI: 10.53936/afjare.2022.17(2).8
Okorie Okoro Ndukwe, Chinyere Charity Okeke, Paul Kayode Baiyeri
Three experiments were conducted from 2014 to 2018 to examine the economics of yellow passion fruit production under different soil fertility management. In 2014, two yellow passion fruit genotypes, that is Conventional and KPF 4, were grown in the field and pot simultaneously under varying rates of poultry manure (PM), including 0, 10, 20, 30 and 40 t/ha. In 2016, the response of the two genotypes to a single and combined application of organic and inorganic fertilisers was evaluated under field conditions, namely no fertiliser application, 10, 20 t/ha PM, 400 kg/ha NPK 15:15:15, 5 t/ha PM + 200 kg/ha NPK, and 10 t/ha PM + 200 kg/ha NPK. The profitability indicators were gross revenue, net revenue, returns per naira invested and the profitability index. In 2014, total variable cost increased significantly (P < 0.05) with an increase in PM rates in both the field and pot studies. The highest net returns and returns per naira invested were obtained with the application of 20 t/ha PM. The combined application of 10 t/ha PM + 200 kg/ha NPK recorded the highest gross return, net return and return per naira invested in the 2016 production cycle. Growing the vines without fertiliser application gave significantly least net returns without profit in both production cycles and methods. Consequently, applying 20 t/ha PM was adjudged the most profitable for yellow passion fruit production in the study area, and hence is recommended particularly when organic farming is intended. However, if growers must use inorganic fertiliser, a combined application of 10 t/ha PM + 200 kg/ha NPK will be most profitable.
2014年至2018年进行了三个实验,考察了不同土壤肥力管理下黄百香果生产的经济性。2014年,两种黄色百香果基因型,即常规和KPF4,在不同的家禽粪便(PM)施用量(包括0、10、20、30和40t/ha)下同时在田间和盆栽中生长。2016年,在田间条件下评估了两种基因型对有机和无机肥料的单一和联合施用的反应,即不施肥、10、20吨/公顷PM、400公斤/公顷NPK 15:15:15、5吨/公顷PM+200公斤/公顷NPK和10吨/公顷PM+200公斤每公顷NPK。盈利能力指标包括总收入、净收入、每奈拉投资回报率和盈利能力指数。2014年,随着现场和现场研究中PM率的增加,总可变成本显著增加(P<0.05)。20吨/公顷PM的应用获得了最高的净回报和每奈拉投资回报。10吨/公顷PM+200公斤/公顷NPK的组合应用在2016年生产周期中记录了最高的总回报、净回报和每个奈拉投资的回报。在生产周期和方法中,在不施肥的情况下种植葡萄藤的净回报率都明显最低。因此,施用20吨/公顷PM被认为是研究区域内黄百香果生产最有利可图的,因此建议特别是在打算进行有机农业时。然而,如果种植者必须使用无机肥料,那么10吨/公顷PM+200公斤/公顷NPK的联合施用将是最有利可图的。
{"title":"Economic analysis of yellow passion fruit production in southeastern Nigeria under different soil fertility management","authors":"Okorie Okoro Ndukwe, Chinyere Charity Okeke, Paul Kayode Baiyeri","doi":"10.53936/afjare.2022.17(2).8","DOIUrl":"https://doi.org/10.53936/afjare.2022.17(2).8","url":null,"abstract":"Three experiments were conducted from 2014 to 2018 to examine the economics of yellow passion fruit production under different soil fertility management. In 2014, two yellow passion fruit genotypes, that is Conventional and KPF 4, were grown in the field and pot simultaneously under varying rates of poultry manure (PM), including 0, 10, 20, 30 and 40 t/ha. In 2016, the response of the two genotypes to a single and combined application of organic and inorganic fertilisers was evaluated under field conditions, namely no fertiliser application, 10, 20 t/ha PM, 400 kg/ha NPK 15:15:15, 5 t/ha PM + 200 kg/ha NPK, and 10 t/ha PM + 200 kg/ha NPK. The profitability indicators were gross revenue, net revenue, returns per naira invested and the profitability index. In 2014, total variable cost increased significantly (P < 0.05) with an increase in PM rates in both the field and pot studies. The highest net returns and returns per naira invested were obtained with the application of 20 t/ha PM. The combined application of 10 t/ha PM + 200 kg/ha NPK recorded the highest gross return, net return and return per naira invested in the 2016 production cycle. Growing the vines without fertiliser application gave significantly least net returns without profit in both production cycles and methods. Consequently, applying 20 t/ha PM was adjudged the most profitable for yellow passion fruit production in the study area, and hence is recommended particularly when organic farming is intended. However, if growers must use inorganic fertiliser, a combined application of 10 t/ha PM + 200 kg/ha NPK will be most profitable.","PeriodicalId":45228,"journal":{"name":"African Journal of Agricultural and Resource Economics-AFJARE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45730394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
African Journal of Agricultural and Resource Economics-AFJARE
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1