盐渍化地区的土壤盐分聚集在土壤表层,遇到降雨和灌水即做两个方向运动:一是水平运动,随地表径流从区域中排出;二是随入渗水垂直运动,下渗到深层土壤或地下水中,表层土壤表现为脱盐现象。由于影响作物生长的主要是表层土壤盐分,因此搞清表层土壤脱盐和区域排盐与水的关系对改良盐碱地有重要意义。 Salinization of soil salinity in the region gathered in the soil surface, in the event of rainfall and irrigation that do two directions: First, horizontal movement, with the surface runoff from the region discharge; Second, with infiltration of vertical movement, infiltration into the deep soil Or groundwater, surface soil showed desalination phenomenon. As the main affecting soil growth is surface soil salinity, so to clarify the relationship between surface soil desalination and regional drainage and water on the improvement of saline-alkali land is of great significance.