容重对土壤饱和水分运动参数的影响

Effect of Bulk Density on Soil Saturated Water Movement Parameters

通过石蜡固定容重方法测定了4种土壤不同容重下的饱和重量含水量与饱和导水率,分析了容重对这两个土壤饱和水分运动参数的影响。结果表明:饱和重量含水量随容重的增加而减小,与容重成反比关系,饱和导水率随着容重的增加呈现幂函数形式递减。这些结果将为构建变容重土壤水分运动创新性理论体系提供适当的定量关系,有利于实现土壤水资源的合理利用。

In the paper, saturated mass water content and saturated hydraulic conductivity for different hulk densities were measured by the method of fixing bulk density of olefin. Effects of bulk density on the two parameters were analyzed. The results showed that saturated mass water content decreased with the increment of bulk density and was inverse to bulk density. Saturated hydraulic conductivity tended to diminish in power function when bulk density increased. The researches will provide appropriate function quantificetionally to build innovative frame on water movement theory for the soil with changing bulk density. It is helpful to utilize soil water resource reasonably.