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在分析大量田间波涌灌入渗实验基础上，对黄土区土壤波涌灌得到了一些有趣的结果，证明了波涌灌灌水循环率存在最佳值．在放水时间１８—４５ｍｉｎ之间时，最优循环率都在１／３左右。另对Ｋｏｓｔｉａｋｏｖ系数ｋ，α与代表水分运动有关的土壤物理属性──容重ｒｄ和土壤物理性粘粒含量λ的相关分析表明，灌水过程中表土容重的变化是入渗率减小的主要原因。
Based on the analysis of a large number of experiments on surge infiltration in the field, some interesting results have been obtained for the soil surge surges in loess area, which proves that there is an optimal value for the surge rate of surge irrigation. When the water is discharged between 18-45min, the optimal circulation rate is about 1/3. The correlation analysis of the Kostiakov coefficient k, α and the soil physical properties related to water movement, ie, bulk density rd and soil physical clay content λ, shows that the change of surface bulk density during irrigation is the main reason for the decrease of infiltration rate.