为了控制迳流和土壤侵蚀,正在进行沟式覆盖耕作法和作物残余物管理的试验,这些地区由于土壤结冻和土壤性质方面的问题,使水分入渗受阻.沟槽基本沿等高线布置,沟槽内填充秸杆等作物残余物,以防结冰,地表粘结和横向迳流.田间试验、渗透试验和理论分析都表明,这种方法具有增加渗透和减少侵蚀的作用. In order to control runoff and soil erosion, trials of furrow-cover tillage and crop residue management are under way to prevent water infiltration due to problems with soil freezing and soil properties. The trenches are basically arranged along contours The trenches were filled with residues of straw and other crops to prevent icing, surface sticking and lateral flows.Field experiments, penetration tests and theoretical analyzes all showed that this method has the effects of increasing infiltration and reducing erosion.