【摘要】 在少耕免耕条件下，地膜和秸杆覆盖耕作与传统耕作相比，可促进土壤养分转化，改善土壤物理性状，协调水、肥、气、热和各肥力因素，增产效果明显，可因地制宜地在半干旱地区进行推广。更多还原

【Abstract】 The plastic mulch and straw mulch tillage could promote the conversion of soil nutrition under the condition of mini-tiuage and no-tillage,improve the soil physical features,coordinate the factors such as water,fertility,air and heat and increase the yield compared with thetraditional tillage.This technology could be extended reasonably in the other semi-arid areas of China.更多还原