甘肃农业大学农耕特色库

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草田轮作在黄土高原丘陵沟壑区旱作农业中的作用研究: 作者： 曹利民 来源： 兰州大学 年份： 2010 文献类型： 学位论文 关键词： 可持续发展草田轮作循环农业模式; 描述： duction in the area is restricted by disadvantageous natural resources and environmental conditions, including low arable land area per capita, frequent drought events and a landscape dominated by mountains. Forage crop rotation systems could improve soil fertility, increase crop外eld and provide quality forage supplies for livestock production. Additionally, their adoption is considered a suitable means to advance sustainable agriculture development. In this study, the role and status of forage crop rotations in Tianshui city were studied.; 全文：甘肃省天水市地处陇东黄土高原与西秦岭山地交接地带,人多地少,山多川少,人地矛盾突出,水土流失严重,干旱少雨,农业生产基本上处于受自然条件制约的不利境地。已有研究和实践表明,草田轮作能够改良土壤,实现

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