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保护农业对埃塞俄比亚东南部Arsi小麦可持续生产的短期效应
全球生物学、农业与健康科学杂志

全球生物学、农业与健康科学杂志
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ISSN: 2319€5584

+ 441518081309

摘要

保护农业对埃塞俄比亚东南部Arsi可持续小麦生产的短期影响

Almaz Admasu, Dawit Habte, Debele Debela, Tolessa Debele

保护性农业(CA)是一种可能的技术,可以减轻土壤质量下降,减少径流和土壤侵蚀,增加就地保持土壤水分,从而提高作物产量。本研究的目的是测试和验证有利于可持续小麦生产的CA实践,并提高小农的采用方法和技能。2013-2016年进行了3次CA技术验证试验。第一项试验是在2013-2016年“meher”或大雨季期间,将CA与Sinana IP站点的农民田间传统农业(CVA)进行了比较。在CA验证中,土壤扰动被限制在绝对最小值;也就是说,在播种时,土壤被扰动只是为了将种子放入土壤中。相比之下,在CVA中,土壤在播种前用当地的牛犁“maresha”犁四次,以获得一个合适的苗床。种植前以3 L/ha的追施量控制CA的杂草,出苗后以0.5 L/ha的Pallas 45OD和1 L/ha的2,4- d控制杂草。推荐的除草措施适用于常规农业,即分蘖期和孕穗期两次人工除草。在2014年初和2015年初的小雨季,蚕豆被用作覆盖或休息作物。 The second CA verification trial was initiated with the introduction of zero tillage planter at Kulumsa Research Center involving zero tillage CA, minimum or reduced tillage CA and CVA in 2016. The third trial was conducted in low rainfall areas in which CA, CA coupled with tie ridge and CVA were compared at Dhera in 2014. Results of the first trial indicated that at the initial year CVA gave more wheat yield than CA. The benefits of CA has increased progressively over years and on average CA yielded 12.5% more wheat yield than CVA. Similarly, zero tillage CA increased wheat grain yield by 7.1% and 11.6% as compared with conventional and reduced tillage, respectively. In arid and semi-arid areas, CA coupled with tieridge significantly increased wheat grain yield as compared to conventional agriculture. Thus, CA could be more applicable to moisture stress /erratic rainfall areas as compared to high rainfall areas and wheat farmers in drought prone regions could possibly adopt CA technology

发表日期:2021-02-22;

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