The experiment studied the effects of residue used as surfacemulch, mix with soil and a separate horizon in soil profile on soil water and salt movement.
本试验主要研究了作物秸杆表面覆盖、垂直覆盖（混施）和隔层对土壤水盐运动的影响。
2
The study of herbicide deposition on soil surface and wheat stubble in different wheat mulch conditions is conducted.
研究了不同兑水量情况下，除草剂在免耕麦茬土壤表面和麦茬上的沉积规律。
3
Snow cover is an important mulch of ground surface, as well as an important parameter of meteorology and hydrology.