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通过在塔里木沙漠公路沿线选取3个不同地下水埋深区域(地下水埋深分别为3 m、7.3 m、13.7 m)取样并测定土壤含水率和含盐量,分析了地下水埋深对于土壤水盐分布的影响。结果表明:不同地下水埋深处土壤含水率随深度增加均先减小后增大,盐分的变化相对比较复杂;砂土最大毛细上升高度大约为1.8 m;黏土层具有聚水积盐的作用,其分布处含水率和含盐量都比较大;灌溉水影响深度为1.2 m。研究结果充分考虑了地下水埋深在土壤水盐分布中起的重要作用,在相关研究中具有重要的参考意义,对于建立合理的灌溉制度具有重要的指导意义。
By sampling three different groundwater depths (groundwater depths of 3 m, 7.3 m and 13.7 m respectively) along the Tarim Desert Highway and determining the soil water content and salinity, the effects of groundwater depth on soil water and salinity distribution Impact. The results show that the soil water content at different groundwater depths decreases firstly and then increases with the increase of depth, and the change of salt content is relatively complicated; the maximum capillary height of sand is about 1.8 m; the clay layer has the effect of accumulating salt water, The distribution of water content and salt content are relatively large; irrigation water depth of 1.2 m. The results fully consider the important role of groundwater depth in the distribution of soil water and salinity, which has important reference meaning in related research and has important guiding significance for establishing a reasonable irrigation system.