田间非饱和土壤水分运动参数测定
Field Measurement of Unsaturated SoilWater Movement Parameters
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摘要: 在秦王川灌区利用双环入渗仪在现场进行了积水入渗试验,同时利用γ射线测定土壤水分剖面,进而根据室内外所测定的土壤水分特征曲线,推求了该灌区非饱和土壤水分运动参数,并对室内外所确定的结果进行了对比分析。Abstract: The insitu ponding infiltration test was conducted with the doublering infiltration device and the soil water content profile was measured with the γ ray in Qinwangchuan irrigatedarea. Based on the measured soil water retention curve in lab and field, the soilwater movement parameters were determined and the measured results in lab and field were compared and analyzed in order to lay a foundation for simulation of unsaturated soilwater movement in the area.