旱地表土耕作效应研究  

Study on surface tillage effect for dryland

作　　者：李洪文[1] 陈君达[1] 高焕文[1] 王树东[1] 

机构地区：[1]中国农业大学,北京100083

出　　处：《干旱地区农业研究》2000年第2期13-18,共6页Agricultural Research in the Arid Areas

基　　金：中国-澳大利亚合作项目 "旱农保护性 /带状耕作研究"!( A CIA R92 0 9)

摘　　要：4年试验表明 ,保护性耕作具有明显的保水增产增收效果 ,但是仅靠改进机具 ,难以解决播种质量不高的问题。通过对比不同处理的秸秆覆盖率、地温、土壤含水量、出苗率和作物产量 ,初步得出表土耕作可以减少地表秸秆覆盖量 ,改善地面状况 ,提高播种质量 ,增加地温 ,保苗增产。Four years' experiment showed the advantage of conservation tillage in soil water conserving and crop yield increasing, but also exposed some problems like poor planting quality. Through analysis of stalk cover tate, soil temperature, soil moisture content, crop emergence and yield of different treatments, it was found that surface tillage can reduce stalk cover rate, improve ground condition and increase soil temperature and yield. Surface should be treated as a key technology for conservation tillage.

关 键 词：旱地 保护性耕作 表土耕作 

分 类 号：S343.1[农业科学—作物栽培与耕作技术]