影响土壤入渗积水时间因素的试验

    Experiments on factors affecting ponding time under soil infiltration conditions

    • 摘要: 为了研究供水强度、土壤容重、初始含水率、土壤质地等因素对非充分供水入渗积水时间的影响,建立入渗积水时间与单一因素的数学关系,在室内进行了8种均质土壤的非充分供水入渗试验。结果表明:供水强度与入渗积水时间呈降幂函数关系,土壤容重、初始含水率、质地各因素与入渗积水时间呈对数函数关系。研究结果对于水土保持及水文学的径流研究有重要意义,对于指导喷灌系统的设计具有实际意义。

       

      Abstract: In order to study the effects of water supply intensity, soil bulk density, initial soil moisture and soil texture on infiltration ponding time under the condition of non-sufficient water supply, and build mathematical relation on infiltration ponding time and each factor, infiltration experiments with eight kinds of homogenized soils under non-sufficient water supply condition were conducted indoors. The results showed a negative-exponent power function relationship between water supply intensity and infiltration ponding time, and logarithmic function relationship between soil bulk density, initial soil moisture, soil texture and infiltration ponding time. The research is of an important significance for studying soil and water conservation and hydrology runoff, and also of practical meaning for instructing the design of sprinkler irrigation system.

       

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