Effects of Conservation Tillage on Soil, Water Loss and Crop Yield on Sloping Land in Beijing, China
Soil and water loss on sloping croplands arc one of the major environmental problems attracting widespread atten-tion all over the world. Various techniques including terrace and contour tillage for protection were used in recent years but the effects were limited. In this research, the effects of conserva-tion tillage on soil, water loss and crop yield were studied under simulated rainfall in Beijing, China. The results show that the application of conservation tillage averagely decreased runoff by 40％ and.soil loss by 29％. However, the crop yield was also averagely decreased by 16％ by conservation tillage. It can be concluded that the conservation tillage is very efficient in reduc-ing soil and water loss on sloping croplands in studied area, but .this practice should be only applied on sandy soil and loamy soil to avoid its negative effects on crop yield. This conclusion is very useful for the application of conservation tillage and the controlling of soil and water loss in Beijing, China.
conservation tillage convertional tillage minimizing tillage soil and water conservation sloping cropland
XIAO Bo WANG Qinghai YU Dingfang
Research & Development Center for Grasses and Environ-ment Beijing Academy of Agriculture and Forest College of Forest Guizhou University Guiyang, P. R. China
国际会议
山东淄博
英文
382-385
2011-05-27（万方平台首次上网日期，不代表论文的发表时间）