摘要
秸秆覆盖与秸秆翻压还田均可改善土壤理化性状。还田３年．土壤表层（０～１０Ｃｍ）有机质。覆盖比翻压增加５８６％；＞０．２５ｍｍ的团聚体、覆盖是翻压的４．７倍；覆盖条件下。土壤Ｎ、Ｐ。Ｋ均有不同程度的增加．而翻压还田土壤中的Ｎ大幅度降低；保水效果．覆盖明显优于翻压：覆盖可以控制土壤侵蚀．抑制杂草生长。节省劳动力和能源。
Both of mulching straw(MS) and soil-returning straw (SRS) can improve soilproperties. After straw returned soil three years. topsoil (0 ~ 10 cm) organic matter ofMS is much more 58. 6% than of SRS; >0. 25 mm aggregation of MS is the same 4. 7time as SRS, soil N. P. K is increased in mulching soil, but in soil-returning soil. soilN is decreased in large scale, conserving water effects of MS is better than SRS,besides. MS can control soil erosion. restrain. restrain weed growth. save labor and energy.
出处
《国土与自然资源研究》
1999年第1期43-45,共3页
Territory & Natural Resources Study
