Experimental Research on Rainfall and Irrigation Infiltration under the Condition of Planting
种植条件下降雨灌溉入渗试验研究

Based on an analysis of observation data obtained from Touying and Heicheng experimental fields in Qingshuihe plain in the process of rainfall(irrigation)infiltration,this paper described the vertical zonality characteristics of water migration in the unsaturated zone,moisture condition of rainfall(irrigation)recharging groundwater,and basic characteristics of the groundwater recharge process from the point of view of energy.With the evapotranspiration model and the soil moisture flux plane model,the authors calculated crop evapotranspiration,change of soil pondage,and leakage and leakage factors at the depth of 400 cm,and analyzed the relationship of soil water leakage,leakage factors of the deep layer and groundwater recharge and coefficients of recharge from the angle of many years.The results will help the analyzing process of rainfall(irrigation)recharging groundwater,and also contribute to analyzing groundwater recharge and coefficients of recharge in a quantitative way.