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目前广大农村牧区,特别是水土流失严重地区在植树造林时,主要采取挖水平沟、鱼鳞坑或大坑整地,这可以拦截地表逕流,蓄积雨雪和保持林地水分,使有限的雨量不致流失,存积枯枝落叶杂草,改良土壤,提高土地肥力,改善土壤理化性质和立地条件,为幼树的生长创造良好的条件。但是大部分地区还普遍存在着整地工作只注意整地的蓄水存雪作用,忽视了回填表土,使整地的优越性和作用不能
At present, most rural areas and pastoral areas, especially in areas with serious soil erosion and soil erosion, mainly use dug horizontal ditches, fish-scale pits or pits for site preparation. This can intercept surface runoff, accumulate rain and snow and maintain woodland moisture so that limited rainfall will not be lost, Stored litter and weeds, soil improvement, improve soil fertility, improve soil physical and chemical properties and site conditions for young trees to create good conditions for the growth. However, in most areas, there is also a common problem that the preparation work only pays attention to the function of water storage and snow storage, and neglects the backfill of topsoil so that the superiority and role of soil preparation can not be