首页 > 最新文献

Agro-Ecosystems最新文献

英文 中文
Isoenzymatic variations in populations of Chenopodium album L. resistant and susceptible to triazines 三嗪类抗性和敏感性藜麦群体的同工酶变异
Pub Date : 1981-06-01 DOI: 10.1016/0304-3746(81)90011-1
J. Gasquez, J.P. Compoint

As part of a study of triazine resistance in weed species, the authors have collected several resistant populations of Chenopodium album in different areas in France. A study of intra- and inter-population variability between different susceptible and resistant populations has been made using polyacrylamide gel electrophoresis of foliar isoenzymes. The separation of esterases and malate dehydrogenase isoenzymes was carried out in a modified vertical apparatus.

Within each resistant population, all individuals have the same pattern of esterase and populations collected in the same area have the same zymogram. However, populations from different areas have distinct zymograms. These data suggest that the resistant populations originated in the region where they now occur, and that there is a high rate of self-pollination in each resistant population.

After treating a susceptible population with a low dose of atrazine, about 1% of plants survived and these have a high frequency of the esterase zymogram typical of resistant individuals. The offspring of these plants are completely resistant. The resistant and susceptible populations grew near each other so that they may have a common origin. The pattern of occurrence of resistance in relation to its inheritance and the level of inbreeding in populations is discussed.

作为一项杂草物种对三嗪抗性研究的一部分,作者在法国不同地区收集了几个具有抗性的Chenopodium album种群。利用聚丙烯酰胺凝胶电泳技术对不同易感和抗性群体间的变异进行了研究。在改良的立式装置上进行了酯酶和苹果酸脱氢酶同工酶的分离。在每个耐药群体中,所有个体具有相同的酯酶模式,在同一地区收集的群体具有相同的酶谱。然而,来自不同地区的种群具有不同的酶谱。这些数据表明,抗性种群起源于它们现在出现的地区,并且每个抗性种群的自花授粉率很高。在用低剂量的阿特拉津处理易感群体后,约1%的植物存活下来,这些植物具有抗性个体典型的酯酶酶谱的高频率。这些植物的后代具有完全的抗性。抗性种群和易感种群生长在彼此附近,因此它们可能有一个共同的起源。讨论了抗性的发生模式与其遗传和种群近交水平的关系。
{"title":"Isoenzymatic variations in populations of Chenopodium album L. resistant and susceptible to triazines","authors":"J. Gasquez,&nbsp;J.P. Compoint","doi":"10.1016/0304-3746(81)90011-1","DOIUrl":"10.1016/0304-3746(81)90011-1","url":null,"abstract":"<div><p>As part of a study of triazine resistance in weed species, the authors have collected several resistant populations of <em>Chenopodium album</em> in different areas in France. A study of intra- and inter-population variability between different susceptible and resistant populations has been made using polyacrylamide gel electrophoresis of foliar isoenzymes. The separation of esterases and malate dehydrogenase isoenzymes was carried out in a modified vertical apparatus.</p><p>Within each resistant population, all individuals have the same pattern of esterase and populations collected in the same area have the same zymogram. However, populations from different areas have distinct zymograms. These data suggest that the resistant populations originated in the region where they now occur, and that there is a high rate of self-pollination in each resistant population.</p><p>After treating a susceptible population with a low dose of atrazine, about 1% of plants survived and these have a high frequency of the esterase zymogram typical of resistant individuals. The offspring of these plants are completely resistant. The resistant and susceptible populations grew near each other so that they may have a common origin. The pattern of occurrence of resistance in relation to its inheritance and the level of inbreeding in populations is discussed.</p></div>","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"7 1","pages":"Pages 1-10"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(81)90011-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79738461","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: 38
Cropping and yields in agricultural systems of the north-eastern hill region of India 印度东北部山区农业系统的种植和产量
Pub Date : 1981-06-01 DOI: 10.1016/0304-3746(81)90012-3
O.P. Toky, P.S. Ramakrishnan

Shifting agriculture locally known as jhum is the predominant form of agriculture used by the local tribe of the north-eastern hill region of India. There is also some valley rice cultivation and terrace cultivation. The structure and some functional aspects of these three agro-ecosystem types are discussed and compared. The 30 year jhum cycle has the advantage over the 10 or 5 year cycle apart from higher yields, in that the monetary output/input ratio under a 30 year jhum cycle is comparatively favourable. Further, the 30 year jhum cycle is advantageous over terrace cultivation as the latter needs heavy inputs of fertilizers. The main advantage of settled valley cultivation is the raising of crops consistent in yield year after year from the same site.

移动农业在当地被称为jhum,是印度东北部山区当地部落使用的主要农业形式。也有一些谷稻种植和梯田种植。讨论并比较了这三种农业生态系统类型的结构和某些功能。除了更高的收益率外,30年jhum周期比10年或5年周期有优势,因为30年jhum周期下的货币产出/投入比相对有利。此外,30年的jhum周期比梯田耕作更有利,因为后者需要大量的肥料投入。定居谷栽培的主要优点是在同一地点年复一年地种植产量一致的作物。
{"title":"Cropping and yields in agricultural systems of the north-eastern hill region of India","authors":"O.P. Toky,&nbsp;P.S. Ramakrishnan","doi":"10.1016/0304-3746(81)90012-3","DOIUrl":"10.1016/0304-3746(81)90012-3","url":null,"abstract":"<div><p>Shifting agriculture locally known as jhum is the predominant form of agriculture used by the local tribe of the north-eastern hill region of India. There is also some valley rice cultivation and terrace cultivation. The structure and some functional aspects of these three agro-ecosystem types are discussed and compared. The 30 year jhum cycle has the advantage over the 10 or 5 year cycle apart from higher yields, in that the monetary output/input ratio under a 30 year jhum cycle is comparatively favourable. Further, the 30 year jhum cycle is advantageous over terrace cultivation as the latter needs heavy inputs of fertilizers. The main advantage of settled valley cultivation is the raising of crops consistent in yield year after year from the same site.</p></div>","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"7 1","pages":"Pages 11-25"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(81)90012-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86456728","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: 72
The study of vegetation 植被研究
Pub Date : 1981-06-01 DOI: 10.1016/0304-3746(81)90021-4
R. Misra
{"title":"The study of vegetation","authors":"R. Misra","doi":"10.1016/0304-3746(81)90021-4","DOIUrl":"10.1016/0304-3746(81)90021-4","url":null,"abstract":"","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"7 1","pages":"Pages 90-91"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(81)90021-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"102947706","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
A comparison of productivities and energy values between slash and burn agriculture and secondary succession in the upper Rio Negro region of the Amazon Basin 亚马逊河流域上里奥内格罗地区刀耕火种农业与次生演替的生产力和能量值比较
Pub Date : 1981-06-01 DOI: 10.1016/0304-3746(81)90015-9
Christopher Uhl, Peter Murphy

An analysis of the energy inputs and outputs for conuco agriculture (i.e., shifting cultivation) and a comparison of productivity between conuco crops and successional vegetation was undertaken near the town of San Carlos de Rio Negro in southern Venezuela.

The main crop, yuca (Manihot esculenta, Crantz), yielded (m.t. = metric tonnes) 4.31 m.t. ha−1 wet weight in year one; production declined to 2.81 m.t. ha−1 in the second year. The infertile soils of the region are the major cause of these low yields.

Although relatively unproductive, conuco agriculture is much more energy efficient than mechanized agriculture. The ratio of energy output, in the form of processed food, to energy input in the form of human labor, averaged 13.9:1 over two cropping periods. Slightly more energy was devoted to field activities than to processing activities.

The conuco crops were more productive than the adjacent succession site vegetation (532 vs. 109 g m−2 dry weight) during the first year after cutting and burning; but in the second year the successional vegetation was more than twice as productive as the conuco crops (1446 vs. 529 g m−2 dry weight). This difference in second year production was attributable to greater resource allocation to leaves and longer leaf retention time for the successional vegetation.

在委内瑞拉南部的圣卡洛斯德里奥内格罗镇附近,对椰子农业(即轮作耕作)的能源投入和产出进行了分析,并比较了椰子作物和演代植被之间的生产力。主要作物尤卡(Manihot esculenta, Crantz)第一年的湿重为4.31公吨;第二年产量下降到281万吨/公顷。该地区土壤贫瘠是造成这些低产量的主要原因。尽管相对而言生产力较低,但椰子农业比机械化农业更节能。以加工食品的形式输出的能量与以人力劳动的形式输入的能量之比,在两个种植期内平均为13.9:1。用于实地活动的精力略多于用于加工活动的精力。在砍烧后的第一年,椰树作物的产量高于相邻演替地植被(干重532比109 g m−2);但在第二年,演替植被的产量是椰子作物的两倍多(干重1446比529 g m−2)。这种第二年产量差异的原因是演替植被的叶片资源分配较多,叶片滞留时间较长。
{"title":"A comparison of productivities and energy values between slash and burn agriculture and secondary succession in the upper Rio Negro region of the Amazon Basin","authors":"Christopher Uhl,&nbsp;Peter Murphy","doi":"10.1016/0304-3746(81)90015-9","DOIUrl":"10.1016/0304-3746(81)90015-9","url":null,"abstract":"<div><p>An analysis of the energy inputs and outputs for conuco agriculture (i.e., shifting cultivation) and a comparison of productivity between conuco crops and successional vegetation was undertaken near the town of San Carlos de Rio Negro in southern Venezuela.</p><p>The main crop, yuca (<em>Manihot esculenta</em>, Crantz), yielded (m.t. = metric tonnes) 4.31 m.t. ha<sup>−1</sup> wet weight in year one; production declined to 2.81 m.t. ha<sup>−1</sup> in the second year. The infertile soils of the region are the major cause of these low yields.</p><p>Although relatively unproductive, conuco agriculture is much more energy efficient than mechanized agriculture. The ratio of energy output, in the form of processed food, to energy input in the form of human labor, averaged 13.9:1 over two cropping periods. Slightly more energy was devoted to field activities than to processing activities.</p><p>The conuco crops were more productive than the adjacent succession site vegetation (532 vs. 109 g m<sup>−2</sup> dry weight) during the first year after cutting and burning; but in the second year the successional vegetation was more than twice as productive as the conuco crops (1446 vs. 529 g m<sup>−2</sup> dry weight). This difference in second year production was attributable to greater resource allocation to leaves and longer leaf retention time for the successional vegetation.</p></div>","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"7 1","pages":"Pages 63-83"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(81)90015-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91422817","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: 43
Plant strategies and vegetation processes 植物策略和植被过程
Pub Date : 1981-06-01 DOI: 10.1016/0304-3746(81)90020-2
R. Misra
{"title":"Plant strategies and vegetation processes","authors":"R. Misra","doi":"10.1016/0304-3746(81)90020-2","DOIUrl":"10.1016/0304-3746(81)90020-2","url":null,"abstract":"","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"7 1","pages":"Page 89"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(81)90020-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84921441","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: 55
China's agro-ecosystem 中国的农业生态系统
Pub Date : 1981-06-01 DOI: 10.1016/0304-3746(81)90013-5
Vaclav Smil

China's agro-ecosystem is circumscribed by two critical environmental constraints; relative shortage of arable land and frequent regional lack or surplus of moisture. Intensive cropping and intricate water controls were developed over the centuries to deal with these constraints, and they remain the cornerstone of China's farming today. Human and animal labor continues to be an essential input, as are large quantities of organic fertilizers. Reliance on biomass fuels will also stay high for the foreseeable future. Farming modernization has brought the greatest advances to water control (both irrigation and drainage) and nitrogenous fertilizer production. However, widespread shortages and qualitative deficiences of modern inputs will not be easily eradicated. Total food output during the past three decades just kept pace with the population growth and the one-sided stress on grain production led to insufficient supply of edible oils, fruits and above all, animal foods. Overall use of external energy subsidies (direct and indirect use of fossil fuels and hydro-electricity) is still rather moderate but bold modernization plans for the 1980's would raise it substantially, thus lowering the currently high output/input ratio. Whatever the actual pace of modernization, careful attention to China's deteriorating environment will be critical. Land losses and soil degradation, erosion, deforestation and pollution are assuming alarming proportions and the long-range development of China's farming in balance with its protected environment is finally being recognized as the precondition of sustainable success.

中国的农业生态系统受到两个关键的环境约束;干旱可耕地的相对短缺和频繁的区域性缺水或过剩几个世纪以来,为了应对这些制约因素,集约化种植和复杂的水资源控制得到了发展,它们至今仍是中国农业的基石。人和动物的劳动仍然是一个重要的投入,大量的有机肥料也是如此。在可预见的未来,对生物质燃料的依赖也将居高不下。农业现代化为水的控制(灌溉和排水)和氮肥生产带来了最大的进步。然而,现代投入的普遍短缺和质量缺陷将不容易消除。过去三十年的粮食总产量刚刚跟上人口增长的步伐,对粮食生产的片面压力导致食用油、水果,尤其是动物性食品的供应不足。外部能源补贴的总体使用(直接和间接使用矿物燃料和水力发电)仍然相当有限,但1980年代大胆的现代化计划将大大提高这种补贴,从而降低目前较高的产出/投入比率。无论现代化的实际速度如何,对中国日益恶化的环境的密切关注将是至关重要的。土地流失和土壤退化、侵蚀、森林砍伐和污染正以惊人的速度增长,中国农业的长期发展与受保护环境的平衡最终被认为是可持续成功的先决条件。
{"title":"China's agro-ecosystem","authors":"Vaclav Smil","doi":"10.1016/0304-3746(81)90013-5","DOIUrl":"10.1016/0304-3746(81)90013-5","url":null,"abstract":"<div><p>China's agro-ecosystem is circumscribed by two critical environmental constraints; relative shortage of arable land and frequent regional lack or surplus of moisture. Intensive cropping and intricate water controls were developed over the centuries to deal with these constraints, and they remain the cornerstone of China's farming today. Human and animal labor continues to be an essential input, as are large quantities of organic fertilizers. Reliance on biomass fuels will also stay high for the foreseeable future. Farming modernization has brought the greatest advances to water control (both irrigation and drainage) and nitrogenous fertilizer production. However, widespread shortages and qualitative deficiences of modern inputs will not be easily eradicated. Total food output during the past three decades just kept pace with the population growth and the one-sided stress on grain production led to insufficient supply of edible oils, fruits and above all, animal foods. Overall use of external energy subsidies (direct and indirect use of fossil fuels and hydro-electricity) is still rather moderate but bold modernization plans for the 1980's would raise it substantially, thus lowering the currently high output/input ratio. Whatever the actual pace of modernization, careful attention to China's deteriorating environment will be critical. Land losses and soil degradation, erosion, deforestation and pollution are assuming alarming proportions and the long-range development of China's farming in balance with its protected environment is finally being recognized as the precondition of sustainable success.</p></div>","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"7 1","pages":"Pages 27-46"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(81)90013-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82546055","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: 3
Variability of stream water quality in some land management systems in the southern Kakioka Basin, Japan 日本Kakioka盆地南部一些土地管理系统中河流水质的变化
Pub Date : 1981-06-01 DOI: 10.1016/0304-3746(81)90014-7
T. Hirose, N. Kuramoto

Diurnal and seasonal changes of the concentration of eight inorganic ions (NO3, NO2, NH4, PO4, K, Na, Ca, Mg) in stream water were investigated at four study sites in the rural landscape of the Kakioka Basin, Japan. Study sites included two woodlands and two croplands with rural and urban settlements. The diversification of land use from woodlands and croplands to settlements enhanced ionic concentrations in the stream water. Monthly variations were significant in all the eight ions. The number of ions showing significant diurnal variations increased with the increase of human activities in the drainage basin. Principal component analysis was used to characterize the difference in water quality between study sites and the seasonal and diurnal patterns of fluctuation.

在日本Kakioka流域农村景观的4个研究点,研究了河流水体中8种无机离子(NO3、NO2、NH4、PO4、K、Na、Ca、Mg)浓度的日变化和季节变化。研究地点包括两个林地和两个农田,有农村和城市定居点。从林地和农田到居民点的土地利用多样化提高了溪流中的离子浓度。8种离子的月变化都很显著。随着人类活动的增加,流域内离子数量呈显著的日变化趋势。采用主成分分析对各研究点间水质差异及季节和日波动模式进行了表征。
{"title":"Variability of stream water quality in some land management systems in the southern Kakioka Basin, Japan","authors":"T. Hirose,&nbsp;N. Kuramoto","doi":"10.1016/0304-3746(81)90014-7","DOIUrl":"10.1016/0304-3746(81)90014-7","url":null,"abstract":"<div><p>Diurnal and seasonal changes of the concentration of eight inorganic ions (NO<sub>3</sub>, NO<sub>2</sub>, NH<sub>4</sub>, PO<sub>4</sub>, K, Na, Ca, Mg) in stream water were investigated at four study sites in the rural landscape of the Kakioka Basin, Japan. Study sites included two woodlands and two croplands with rural and urban settlements. The diversification of land use from woodlands and croplands to settlements enhanced ionic concentrations in the stream water. Monthly variations were significant in all the eight ions. The number of ions showing significant diurnal variations increased with the increase of human activities in the drainage basin. Principal component analysis was used to characterize the difference in water quality between study sites and the seasonal and diurnal patterns of fluctuation.</p></div>","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"7 1","pages":"Pages 47-61"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(81)90014-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76593668","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: 6
Bird problems in agriculture 农业中的鸟类问题
Pub Date : 1981-06-01 DOI: 10.1016/0304-3746(81)90016-0
Richard Arnold
{"title":"Bird problems in agriculture","authors":"Richard Arnold","doi":"10.1016/0304-3746(81)90016-0","DOIUrl":"https://doi.org/10.1016/0304-3746(81)90016-0","url":null,"abstract":"","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"7 1","pages":"Pages 85-86"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(81)90016-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136931179","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
Heathlands and related shrublands. Descriptive studies, ecosystems of the world 9A 希斯兰和相关的灌木地。描述性研究,世界生态系统9A
Pub Date : 1981-06-01 DOI: 10.1016/0304-3746(81)90018-4
P. Jacquard
{"title":"Heathlands and related shrublands. Descriptive studies, ecosystems of the world 9A","authors":"P. Jacquard","doi":"10.1016/0304-3746(81)90018-4","DOIUrl":"10.1016/0304-3746(81)90018-4","url":null,"abstract":"","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"7 1","pages":"Pages 87-88"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(81)90018-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78769894","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: 3
Computer modelling in agriculture 农业计算机建模
Pub Date : 1981-06-01 DOI: 10.1016/0304-3746(81)90017-2
P. Jacquard
{"title":"Computer modelling in agriculture","authors":"P. Jacquard","doi":"10.1016/0304-3746(81)90017-2","DOIUrl":"10.1016/0304-3746(81)90017-2","url":null,"abstract":"","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"7 1","pages":"Page 86"},"PeriodicalIF":0.0,"publicationDate":"1981-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(81)90017-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85780926","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
Agro-Ecosystems
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