土壤入渗是大气降水、地表水、地下水和土壤水相互转化的一个重要环节,入渗试验是研究土壤入渗的重要手段。以乌裕尔河、双阳河闭流区为研究对象,以入渗试验为基础,基于不同的气候条件和试验原理,分别对积水条件下的土壤水分垂向变化试验装置、蒸发条件下的土壤水分垂向变化试验装置和冻融条件下的土壤水分垂向变化试验装置进行了分析与设计,以便找到研究寒区闭流区土壤水分运移的最佳试验方法。 Soil infiltration is an important part of atmospheric precipitation, surface water, groundwater and soil water mutual transformation, infiltration test is an important means to study soil infiltration. Taking Wuyuer River and Shuangyanghe River closure area as the research object, based on the infiltration test, based on different climatic conditions and experimental principles, the vertical soil moisture change test device under the conditions of water accumulation, Soil moisture vertical change test device and soil moisture vertical variation test device under freeze-thaw conditions were analyzed and designed in order to find the best test method to study the soil water transport in the cold area of ​​the closed area.