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duo cuo bing ju kai chuang bao hu xing geng zuo xin ju mian
Author(s): 
Pages: 111-111
Year: Issue:  5
Journal: Farm Machinery Using & Maintenance

Keyword:  保护性耕作技术农业生产过度开采乱砍滥伐生态环境自然灾害土壤肥力粮食产量;
Abstract: 近年来,由于人们的过度开采、乱砍滥伐,植被遭到严重破坏,影响了生态环境,干旱、大风、扬沙、冰雹、霜冻等自然灾害时有发生,严重影响了农业生产。农业上掠夺性生产,致使土壤肥力逐年下降、不断板结,粮食产量徘徊不前,为此,国家农业部大力提倡推广和实施保护性耕作技术。它是用作物秸秆或根茬覆盖地表,
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