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MYCOFLORA POTENTIAL IN RIZOSPHER AS BIOLOGICAL GENTSTOCONTROLWILTDISEASES ON PEPPER PLANT 土壤分枝菌群防治辣椒病害的生物学潜力
Pub Date : 2019-06-27 DOI: 10.53555/eijaer.v5i1.44
I. Sudarma, N. Suniti, Ni Nengah Darmiati, I. Bagus
The cause of wilt disease in pepperis Phytophthora capsicifungi, which attacked the pepper plantation area in Kertalangu Village, East Denpasar Sub-district, Denpasar-Bali. The results showed that the fungi on conducive soil were Phytophthora sp., Aspergillussp., and Neurosporasp.  With the highest prevalence attained by Neurosporasp.  of 80%,  while  on suppressive soil found mycellia sterillia fungus, Fusariumsp., Neurosporasp. Aspergillussp., Penicilliumsp., Mucorsp., and Trichodermasp.  With the highest prevalence achieved by Penicilliumsp. By 27%. The antagonistic fungus found only in suppressive soils isthe fungus Neurosporasp., Trichodermasp., Aspergillussp., Penicillium sp., and Mucorsp. each with a percentage of resistance of 67.78 ± 1.6%, 68.52 ± 2.62%, 75.93 ± 2.62%, 68.77 ± 5.43%; and 67.59 ± 3.82%. The highest inhibition abilityis achieved byAspergillussp.
辣椒疫霉(Phytophthora capsicifungi)侵染巴厘岛登巴萨东街道Kertalangu村辣椒种植区辣椒枯萎病的原因分析。结果表明,有利土壤上的真菌主要有疫霉、曲霉和霉霉。和Neurosporasp。以神经孢子虫感染率最高。而在抑制土壤上发现了无菌菌丝体真菌,镰刀菌。, Neurosporasp。Aspergillussp。, Penicilliumsp。, Mucorsp。和木霉。流行率最高的是青霉菌。了27%。仅在抑制性土壤中发现的拮抗真菌是神经孢菌。, Trichodermasp。, Aspergillussp。青霉菌和毛霉。电阻率分别为67.78±1.6%、68.52±2.62%、75.93±2.62%、68.77±5.43%;67.59±3.82%。抑制能力最高的是曲霉。
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引用次数: 0
POWDERY MILDEW (ODIUM LINI) AND PASMO (SEPTORIA LINICOLA) COMBINED EFFECT ON YIELD, YIELD COMPONENTS OF LINSEED (LINUM USITATISSIMUM L.) 白粉病(odium lini)和pasmo (septoria linicola)对亚麻籽(linum usitatissimum l .)产量和产量组成的影响。
Pub Date : 2019-06-24 DOI: 10.53555/eijaer.v5i1.59
Ermias Teshome
Linseed (Linum usitatissimum L.) has been traditional oil crop of Ethiopia and it is the third most important oilseeds in the higher altitudes. It is the leading oil crop in Bale highlands in terms of its area of production and productivity. Regardless of the potential for linseed production; diseases are the major yield limiting factors in Ethiopia. Pasmo (Septoria linicola) and powdery mildew (Odium lini) are among the most important diseases associated with linseed production. This experiment is intended to develop an option for the management of these major diseases. The experiment was conducted for three years in two locations. An improved linseed variety ‘‘Dibene’’ and a local cultivar were planted in RCB design with three replications. At Sinana On-station, ANOVA has depicted that for pasmo disease there was statistically significant (P<0.05) variation among treatments. The highest disease severity of 23.46% and the lowest 12.96% were recorded from local cultivar without fungicide spray and ‘Dibene’ variety sprayed at seven days interval, respectively. Similarly, statistically justifiable variations (P<0.05) were observed for Powdery mildew. The highest and the lowest powdery mildew severities of 46.3% and 22.84 % were recorded from local cultivar without fungicide spray and ‘Dibene’ variety sprayed at seven days interval, respectively. Similarly, ANOVA have depicted that there are significant difference (P<0.05) between treatments for thousand seed weigh (TSW) and grain yields. The highest and lowest TSW of 6.73g and 6.07g were recorded from ‘Dibene’ variety sprayed at twenty one days local cultivar without fungicide spray, respectively. Whereas, the highest and lowest grain yield of 2859.30kg/ha and 2316.8kg/ha was obtained from ‘Dibene’ variety sprayed at fourteen days (14) days and local cultivar without fungicide spray. Similarly, the result follows the same trend at welte’i berisa. ANAVA have shown that there application of a fungicide have made a significant difference (P<0.05) between treatments for TSW and grain yield. The highest and lowest TSW of 5.87gand 5.27g was recorded from ‘Dibene’ variety sprayed at twenty one days interval and local cultivar without fungicide spray, respectively. In case of grain yield, the largest and smallest grain yield of 1733.6kg/ha and 1045.6kg/ha were obtained from ‘Dibene’ variety sprayed at fourteen days days interval and the local cultivar without fungicide spray, respectively. Therefore, One to two times spray of a fungicide Odeon (Chlorothalonil) at a rate of 2.5 kg/ha and at an interval of 14 days is recommended for the management of Powdery mildew and Pasmo diseases on linseed.
亚麻籽(Linum usitatissimum L.)是埃塞俄比亚传统的油料作物,是高海拔地区第三重要的油料作物。就其生产面积和生产力而言,它是贝尔高地的主要油料作物。不考虑亚麻籽生产的潜力;病害是埃塞俄比亚主要的产量限制因素。Pasmo (Septoria linicola)和白粉病(Odium lini)是与亚麻籽生产相关的最重要的疾病。本实验旨在开发一种治疗这些主要疾病的方法。这项实验在两个地点进行了三年。以改良亚麻品种“Dibene”和地方栽培品种为材料,采用RCB设计,3个重复种植。在Sinana On-station,方差分析显示pasmo病在不同治疗间差异有统计学意义(P<0.05)。未喷杀菌剂的地方品种和间隔7 d喷“双苯”品种的病害严重程度最高,分别为23.46%和12.96%。同样,在白粉病中观察到统计学上合理的变化(P<0.05)。未喷杀菌剂的地方品种和间隔7 d喷“双苯”品种的白粉病发病率最高和最低,分别为46.3%和22.84%。同样,方差分析显示千粒重(TSW)和籽粒产量在处理间存在显著差异(P<0.05)。在不喷杀菌剂的地方栽培品种上,“二苯”品种的总总重最高为6.73g,最低为6.07g。而喷14天和不喷杀菌剂的地方品种籽粒产量最高、最低分别为2859.30kg/ha和2316.8kg/ha。同样,结果也遵循着同样的趋势。ANAVA结果表明,施用一种杀菌剂对籽粒产量有显著影响(P<0.05)。间隔21 d喷施的“迪贝尼”品种和未喷施的地方品种的总重最高为5.87g,最低为5.27g。在产量方面,隔14天喷施的“二苯”品种和不喷施的地方品种籽粒产量最高为1733.6kg/ha,最低为1045.6kg/ha。因此,建议以2.5公斤/公顷的剂量,每隔14天喷施杀菌剂Odeon(百菌清)1至2次,用于管理亚麻籽上的白粉病和Pasmo病。
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引用次数: 0
QUANTIFICATION AND CHARACTERIZATION OF MEDICAL WASTE IN PUBLIC HEALTH CARE FACILITIES WITHIN AKURE METROPOLIS, ONDO STATE, NIGERIA 尼日利亚昂多州阿库雷市公共卫生保健设施医疗废物的量化和特征分析
Pub Date : 2019-05-19 DOI: 10.53555/eijaer.v5i1.55
O. Olanrewaju
This study investigated the quantity and rate of medical waste generation in purposely selected public hospitals located within Akure metropolis of Ondo State and determined the characteristics of the waste generated. The quantity of medical waste generated was measured daily in kg per day, kg per bed per day, and kg per patient per day while, the physical and chemical characteristics were determined according to standard methods. This study indicated that the quantity of medical waste generated by Ondo State Specialist Hospital Akure, and Mother and Child Hospital Akure were 124.5 kg/day and 0.44 kg/patient/day. Over two-thirds were general waste while the remainder (30.9%) were considered to be infectious and hazardous wastes. The result obtained from physical characterization of the medical waste revealed that the percentage of moisture content and bulk density of cellulose in the medical waste composition exceed other components of the waste. However, from proximate analysis of the medical waste, cellulose has the highest percentage of fixed carbon, volatile matter and ash while the result obtained from ultimate analysis indicated that the percentage content of hydrogen, nitrogen, sulphur, oxygen and carbon is higher than that of other composition of medical waste.
本研究调查了在翁多州阿库雷市选定的公立医院产生医疗废物的数量和比率,并确定了产生的废物的特征。以kg /天、kg /张/天、kg /病人/天计量每日产生的医疗废物量,并按标准方法测定其理化特性。本研究表明,翁多国立阿库雷专科医院和阿库雷妇幼医院的医疗废物产生量分别为124.5 kg/天和0.44 kg/病人/天。超过三分之二是一般废物,其余的(30.9%)被认为是传染性和危险废物。对医疗废物进行物理表征的结果表明,医疗废物组成中纤维素的含水率和容重百分比超过了废物的其他成分。然而,从医疗废物的近似分析中,纤维素的固定碳、挥发物和灰分百分比最高,而最终分析结果表明,氢、氮、硫、氧和碳的百分比含量高于医疗废物的其他成分。
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引用次数: 3
FUNGICIDAL FORMULATION BASED ON ESSENTIAL OILS OF CYMBOPOGON CITRATUS, LIPPIA MULTIFLORA AND NATURAL CLAY IN CONTROLLING SORGHUM SEED-BORNE FUNGI 以香茅、多花脂和天然粘土精油为基础的杀真菌制剂对高粱种子真菌的防治作用
Pub Date : 2019-05-19 DOI: 10.53555/eijaer.v5i1.58
S. Bonzi, K. Dossa, Y. Millogo, I. Somda, B. Sorgho
The fungicidal properties of formulation based on essential oils of Cymbopogon citratus, Lippia multiflora and swelling clayey powder containing montmorillonite (26 wt.%), iolites (21 wt.%), kaolinite (7 wt.%), orthoclase (20 wt.%), quartz (15 wt.%), goethite (2 wt.%) and hematite (4 wt.%) with specific surface area of 34.68 m2/g have been tested against sorghum seed-borne fungi, on two varieties (Framida and Kapelga). Aromatized powders were applied at 100 g and 800 g for 5 kg of seeds and the infection levels were evaluated after 7 days of incubation compared with untreated seeds and seeds treated with synthetic fungicide. The aromatized powders exhibited moderate to strong antifungal activity against the fungi Fusarium moniliforme and Phoma sorghina in both varieties. The mass formulation of 800 g for 5 kg of seeds showed the best antifungal activity. Clay-C. citratus oil  formulation was the most potent as compared to the synthetic fungicide in the two varieties. It reduced P. sorghina infection by 87.50% and 92.85% in Framida and Kapelga respectively. F. moniliforme infection was reduced by 40.74% and 74.15% respectively in Kapelga and Framida. The findings suggest that formulation based on essential oils adsorbed on swelling clayey material can be considered as alternative to synthetic fungicide for use in controlling sorghum seedborne fungi.
用比表面积为34.68 m2/g的蒙脱石(26 wt.%)、橄榄石(21 wt.%)、高岭石(7 wt.%)、正长石(20 wt.%)、石英(15 wt.%)、针铁矿(2 wt.%)和赤铁矿(4 wt.%)配制的香茅、多花Lippia精油和膨胀粘土粉对高粱种子真菌的杀真菌性能进行了试验。对5 kg种子分别施用100 g和800 g芳香化粉末,孵育7天后比较未处理种子和合成杀菌剂处理种子的侵染程度。芳香化粉末对两个品种的念珠镰刀菌和高粱镰刀菌均表现出中强的抗真菌活性。以800 g / 5 kg的质量配方抑菌效果最好。Clay-C。与合成杀菌剂相比,柑桔油制剂的杀菌剂效果最好。对高粱单胞菌侵染率分别降低87.50%和92.85%。Kapelga和Framida的念珠菌感染率分别降低了40.74%和74.15%。研究结果表明,以精油为基础的溶胀黏性物质可作为合成杀菌剂的替代品,用于防治高粱种传真菌。
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引用次数: 0
STUDYING THE IMPACT OF EARLY AUTUMN AND LATE SPRING FROSTS ON AGRICULTURAL CROPS YIELD IN IRAN 研究伊朗早秋和晚春霜冻对农作物产量的影响
Pub Date : 2019-05-19 DOI: 10.53555/eijaer.v5i1.53
M. Kianian, H. Hajimohammadi
To study early autumn and late spring frosts and its relation to the yield of agriculture crops in Semnan province we used statistics the least daily minimum temperature of 6 stations in the months of October and November and April during the period (1993-2014) as well as information on yield of agricultural crops from horticulture department of agriculture Organization. Using Pearson correlation coefficient between yield and frequency of early autumn and late spring frosts were studied and finally induced to study the frosts trends for each station. Early frosts of autumn in the province date from 20 October to 23 November and latest frosts ranged from 3 to 23 April and Biarjomand station experience earliest autumn and latest spring frosts. The Relationship between crop yields with frost Occurrence frequency shows that by increasing the number of days of early autumn frosts reduced wheat yield. This condition is for crops such as peas, walnuts and grapes, too. Amongst, the greatest impact is on the potato crop, which is closely related to the pattern of cultivation and harvest. On the other hand, it was found that late spring frosts in the province have the greatest impact on horticultural crops such as cherries, peaches, walnuts and grapes. As a result, early and late frosts changes in Semnan and Miami has increased, which in coming years will be also affected by this situation. Also, early frosts of autumn at harvest time and late spring frosts during flowering have many effects on crop yield.  
为了研究Semnan省初秋和晚春霜冻及其与农作物产量的关系,我们利用1993-2014年期间Semnan省6个站点10月、11月和4月的日最低气温以及农业组织园林部的农作物产量资料进行统计。利用Pearson相关系数对初秋和晚春霜冻产量与频率的关系进行了研究,并最终诱导研究了各站点的霜冻趋势。该省的早霜发生在10月20日至11月23日,晚霜发生在4月3日至23日,Biarjomand站经历了早秋和晚春的霜冻。作物产量与霜冻发生频率的关系表明,增加早秋霜冻天数会降低小麦产量。这种情况也适用于豌豆、核桃和葡萄等作物。其中,受影响最大的是马铃薯作物,这与种植和收获方式密切相关。另一方面,研究发现,该省晚春霜冻对樱桃、桃子、核桃和葡萄等园艺作物的影响最大。因此,塞姆南和迈阿密的早霜和晚霜变化有所增加,未来几年也将受到这种情况的影响。此外,收获季节的早霜和开花期间的晚霜对作物产量有许多影响。
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引用次数: 0
THE ECONOMICS STUDY OF QUINOA PRODUCTION TO REDUCE FOOD POVERTY GAP IN NEW VALLEY GOVERNORATE-EGYPT 埃及新谷省藜麦生产减少粮食贫困的经济学研究
Pub Date : 2019-05-19 DOI: 10.53555/eijaer.v5i1.56
D. Mansour
This research was  undertaken  to  determine  the  economic  importance  of Quinoa,  through identifying  production  constraints  and  economic  features  of  the  investment  as  well  as  the possibility of expansion in its production in ElKharga city, New Valley Governorate, Egypt. Quinoa seeds are very nutritious. Seed, in comparison with other cereals, is higher in protein content (approx. 14.6%).Quinoa is considered an important crop supplement for wheat and it is able to reduce the food gap in Egypt, which it is cultivated in desert areas. Economics of its cultivation in the study area was also assessed.  The results refer to high economic efficiency of cultivating Quinoa in the study area. investment in cultivation Quinoa is economical as the gained profit was higher than opportunity cost, since the return of the pound investor reached about 1.19.In addition to the positive contribution to the national income due to the increase in the added net value compared to the wages based on the social surplus.  This research has highlighted  several  economic  advantages  about  encouraging  farmers,  young  graduates  and investors to cultivate Quinoaas an untraditional crop in the New valley. Then they should be provided  by  seedlings  from  reliable  sources,  knowledge  about  its  cultivation  and  finally production marketing. Increasing the production and establishment  food from Quinoa would result  in  increasing  the  income  and  establishing  some  industries  depending  on  by-products like fodders and fertilizers from leaves and crop west of quinoa.
进行这项研究是为了确定藜麦的经济重要性,通过确定生产限制和投资的经济特征以及在埃及新谷省ElKharga市扩大其生产的可能性。藜麦种子很有营养。与其他谷物相比,种子的蛋白质含量较高(约为10%)。14.6%)。藜麦被认为是小麦的重要补充作物,它能够减少埃及的粮食缺口,它是在沙漠地区种植的。并对研究区种植黄芪的经济效益进行了评价。结果表明,研究区藜麦种植具有较高的经济效益。投资种植藜麦是经济的,因为获得的利润高于机会成本,投资者的英镑回报率约为1.19。除了对国民收入的积极贡献,由于增加的净值与工资相比,基于社会盈余。这项研究强调了鼓励农民、年轻毕业生和投资者在新山谷种植藜麦这种非传统作物的几个经济优势。然后他们应该提供来自可靠来源的幼苗,有关其栽培的知识,最后生产销售。增加藜麦的产量和建立食物将导致增加收入和建立一些依赖副产品的工业,如藜麦西部的叶子和作物的饲料和肥料。
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引用次数: 3
FISH SPECIES ENCOUNTERED OVER 47 YEARS IN LAKE ROSERIS 47年来在罗塞里斯湖遇到的鱼类
Pub Date : 2019-04-28 DOI: 10.53555/eijaer.v5i1.51
E. Hagar, Z. Mahmoud
Illustrated   guideswith   identificationkeys, notes   on distributionand habitats offreshwater  fish species of  Sudan weredue  toBoulenger,1907; Sandon, 1950; Abu Gideiri, 1984,Bailey, 1994and Neumannet al.(2016).With  respect  to the  Blue  Nilein  SudanAbu  Gideiri  (1967)  studied  the fish species  between  Khartoum  and  Roseires. Those of Lake Roseires were recorded by Mishrigi, 1970; Mahmoud et al., 2009; SMEC, 2010 and Elsayed, 2012. In addition, twoun publishedlistswere made byOmer and Hagar (2014) and Hagar (2017). The list might be a useful monitor for the impact,   if   any, of   fully   operating Grand   Ethiopian Renaissance Dam (GERD) on Lake Roseris fish diversity.
苏丹淡水鱼种类分布和生境的图解指南(含识别关键字、注释)于1907年交付oulenger;这种物质,1950;Abu Gideiri, 1984; Bailey, 1994; Neumannet al.(2016)。关于蓝尼罗河,苏丹的abu Gideiri(1967)研究了喀土穆和罗塞雷斯之间的鱼类。Roseires湖的记录由Mishrigi, 1970;Mahmoud et al., 2009;SMEC, 2010; Elsayed, 2012。此外,omer and Hagar(2014)和Hagar(2017)也发布了两份榜单。如果大埃塞俄比亚复兴大坝(GERD)全面运行对罗塞里斯湖的鱼类多样性有影响的话,这份名单可能是一个有用的监测指标。
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引用次数: 1
FOOD SECURITY MANAGEMENT AND ASSESSMENT 食品安全管理和评估
Pub Date : 2019-04-28 DOI: 10.53555/eijaer.v5i1.52
Mohammad A. Alshuniaber
Food security is a multidisciplinary and multidimensional subject, rendering food security governance a complex issue. However, it is important for food security researchers, policy-makers, and other interested parties to realize the international food security framework. Understanding the dimensions of the food security framework facilitates planning and improves the national food security system. As achieving national food security requires collaboration and coordination among several domestic organizations, an efficient food security framework should be in place that highlights the roles of each contributing organization. Furthermore, governments should apply measures to ensure the suitability and adequacy of their state of food security. National food security should be regularly assessed using sound, accurate, and up-to-date food security indicators and internationally recognized food security assessment models to support the decision-making process. This review paper highlights the international food security framework to provide insight for national governments regarding the governance of food security. However, based on an extensive review of the international food security framework, this paper suggests five major dimensions thereof. These dimensions should be considered for any national food security system, as they are crucial to achieving national food security by improving food availability and affordability. These dimensions are a sustainable agriculture and food system, food trade, nutrition, food security knowledge and databases, and fighting poverty.
粮食安全是一个多学科、多维的课题,粮食安全治理是一个复杂的问题。然而,对于粮食安全研究人员、政策制定者和其他利益相关方来说,实现国际粮食安全框架至关重要。了解粮食安全框架的各个方面有助于规划和改进国家粮食安全体系。由于实现国家粮食安全需要几个国内组织之间的合作和协调,因此应建立一个有效的粮食安全框架,突出每个贡献组织的作用。此外,各国政府应采取措施确保其粮食安全状况的适宜性和充分性。应使用健全、准确和最新的粮食安全指标和国际公认的粮食安全评估模型定期评估国家粮食安全,以支持决策过程。这篇综述文章强调了国际粮食安全框架,为各国政府提供关于粮食安全治理的见解。然而,基于对国际粮食安全框架的广泛回顾,本文提出了其五个主要方面。任何国家粮食安全体系都应考虑这些方面,因为它们对于通过改善粮食供应和可负担性来实现国家粮食安全至关重要。这些方面包括可持续农业和粮食系统、粮食贸易、营养、粮食安全知识和数据库以及消除贫困。
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引用次数: 2
THE ROLE OF THE MICROCREDIT PROGRAM IN WOMEN’S EMPOWERMENT IN A NATURAL DISASTER-PRONE AREA OF BANGLADESH: A CRITICAL ANALYSIS 小额信贷项目在孟加拉国自然灾害多发地区妇女赋权中的作用:一项批判性分析
Pub Date : 2019-03-14 DOI: 10.53555/eijaer.v5i1.50
Mst. Jesmin Ara
Natural disasters such as cyclone and flood in the coastal areas of Bangladesh has become a common phenomenon, especially since the last two decades due to the impact of global climate change and global warming. The impacts of natural disasters among the residents of coastal areas are enormous. They face huge financial loss due to the unemployment, deaths of domestic animals, lower crop productions, broken or affected houses, and so on. In addition, they become vulnerable both physically and psychologically during and post-disaster period. However, the impacts of the natural disasters are not the same over men and women. Women become more vulnerable due to their double duties, lack of safety, and for the patriarchal nature of society. The microcredit organizations arguably try to reduce the vulnerabilities of these women by providing short-term loan and also claim to empower them. Therefore, the study emphasizes whether these women are, in reality, becoming empowered. The study was conducted among 384 women who were purposively selected from 6367 households in Southkhali Union, Sarankhola Upazila (sub-district), Bagherhat district, Bangladesh. Results show the overwhelming majority of the participants (90%) were somehow affected by the last natural disaster, either by a cyclone or flood. Regarding the usage of microcredit, the majority of the participants (57%) who are the receivers of microcredit could not use the money independently, as their husbands took the loan from them forcefully. And only 8% of them could invest the microcredit in productive activity such as starting a small business. It is worth noting that 82% of the participants mentioned that their engagement with the microcredit organizations could not change their role in the family, e.g., they could participate in the decision making procedure within the household.
由于全球气候变化和全球变暖的影响,孟加拉国沿海地区的飓风和洪水等自然灾害已成为一种普遍现象,特别是近二十年来。自然灾害对沿海地区居民的影响是巨大的。由于失业、家畜死亡、农作物产量下降、房屋破损或受影响,他们面临巨大的经济损失。此外,在灾后和灾后时期,他们在身体和心理上都变得脆弱。然而,自然灾害对男人和女人的影响是不同的。由于双重责任、缺乏安全感以及社会的父权性质,女性变得更加脆弱。小额信贷组织试图通过提供短期贷款来减少这些妇女的脆弱性,并声称赋予她们权力。因此,这项研究强调了这些女性是否在现实中获得了权力。该研究是在孟加拉国Bagherhat区Sarankhola Upazila(街道)的Southkhali Union的6367个家庭中有意挑选的384名妇女中进行的。结果显示,绝大多数参与者(90%)在某种程度上受到了上一次自然灾害的影响,要么是飓风,要么是洪水。在小额信贷的使用方面,大多数接受小额信贷的参与者(57%)无法独立使用这笔钱,因为她们的丈夫强行从她们那里拿走了贷款。其中只有8%的人可以将小额信贷投资于生产性活动,比如创办小企业。值得注意的是,82%的参与者提到,他们与小额信贷组织的接触不会改变他们在家庭中的角色,即他们可以参与家庭内部的决策程序。
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引用次数: 0
STUDYING ENVIRONMENTAL FACTORS ON HALOPHYTE AND XEROPHYTE PLANTS ESTABLISHMENT IN DESERT REGION (CASE STUDY: SEMNAN, IRAN) 荒漠地区盐生和旱生植物生长环境因子研究(以伊朗塞姆南为例)
Pub Date : 2019-03-03 DOI: 10.53555/eijaer.v5i1.48
M. Golafshani, H. Ravanbakhsh, H. Ara, S. Nikou
It is necessary to investigate the relationship between the vegetation each area with the soil because with this method determines the relationship between the condition and different factors in nature with the area vegetation. Therefore, was investigated the relationship in Delazian, Semnan. To study the vegetation, we identified vegetation types by aerial photography and determination of work units and using field survey and GPS. Typing based on physical appearance, canopy cover percentage, density, and distribution range of dominant plant species was carried out by plot and transect. 5 vegetation types were diagnosed (respectively, from upland to the saline lake are including Tamarix Sp. (1), Seidlitzia rosmarinus (2), Nitraria Schubert (3), Salsola rigida (4) and Haloxylon persicum (5)). Then, the soil samples were taken from within the types. Physicalchemical soil factors such as salinity, Gypsum, soluble cations, and anions, organic matter, lime, etc. were taken from depths of 0-30 and 30-60 cm. In order to investigate the relationship between vegetation types and environmental factors (soil factors such as salinity, SAR, cations and anions and other environmental factors such as groundwater depth, rainfall, temperature, relative humidity, altitude) was used of software PC-ORD and principal component analysis (PCA). The results showed that soil factors are effective in the establishment and distribution of vegetative tape and factors affecting on the differentiation of plant communities are including salinity, SAR, cation exchange capacity, OM, clay, silt, sand, K+, Cl-, calcium, magnesium, sodium, gypsum and limestone, carbonate and bicarbonate, sulfate and water table level. 
研究各区域植被与土壤的关系是确定各区域植被与自然条件和不同因素的关系的必要条件。因此,对Delazian, Semnan的关系进行了调查。为了研究植被,我们采用航空摄影和确定工作单位,利用野外调查和GPS识别植被类型。采用样地法和样带法对优势种的物理外形、冠层盖度、密度和分布范围进行分型。从山地到盐湖共诊断出5种植被类型,分别为柽柳(柽柳1种)、迷花柴子(2种)、白刺(3种)、硬刺(4种)和梭梭(5种)。然后,从这些类型中提取土壤样本。在0 ~ 30 cm和30 ~ 60 cm深度采集土壤理化因子,如盐度、石膏、可溶性阳离子、阴离子、有机质、石灰等。为了研究植被类型与环境因子(盐度、SAR、阳离子阴离子等土壤因子和地下水深度、降雨量、温度、相对湿度、海拔高度等其他环境因子)之间的关系,采用PC-ORD软件和主成分分析(PCA)进行分析。结果表明:土壤因子在植被带的建立和分布中起重要作用,影响植物群落分化的因子包括盐度、SAR、阳离子交换量、OM、粘土、粉砂、砂、K+、Cl-、钙、镁、钠、石膏和石灰石、碳酸盐和碳酸氢盐、硫酸盐和地下水位。
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引用次数: 1
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EPH - International Journal of Agriculture and Environmental Research
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