摘要
2季冬小麦试验结果表明 ,秸秆覆盖具有减少土壤棵间无效蒸发的作用 ,冬小麦返青前 1 m土层贮水量在砂壤土条件下秸秆覆盖处理比无覆盖处理增加 2 %～ 2 5 .8% ,粘壤土条件下增加 2 %～ 1 4.5 %。返青前秸秆覆盖处理比无覆盖处理的日耗水量普遍小 ,返青后情况则相反。秸秆覆盖能够促进作物生长 ,与无覆盖相比 ,提高水分生产效率 4.6%～ 2 5 .2 %。
A straw mulch experiment was conducted in two winter wheat growing season. Research results showed that soil surface evaporation could be reduced obviously with straw mulch. Compared with non mulched treatment, water content in 1m of soil profile in straw mulched treatments increased by 2%～ 25.8% in sandy roam soil, 2%～14.5% in silty loam soil before reviving state. The daily water consumption in straw mulch treatments was less than that in non straw mulch treatment before reviving stage, but the situation conversed after the reviving stage. Water use efficiency will increase by 4.6%～25.2% with straw mulch.
出处
《灌溉排水》
CSCD
北大核心
2002年第3期24-27,共4页
Irrigation and Drainage
基金
北京市科委新星计划项目 (95 3 81160 0 )
关键词
秸秆覆盖
冬小麦
耗水特征
水分生产率
straw mulch
water consumption
water use efficiency
winter wheat
