Soil Evaporation of Summer Maize in Furrow Irrigation

Soil evaporation in field ditch and on ridge was measured by using two kinds of micro-lysimeters respectively.The change of soil evaporation and crop transpiration in summer maize under furrow irrigation were studied,and the relationship between relative soil evaporation intensity and soil water content,and the relationship between soil evaporation intensity and leaf area index were analyzed. The results showed that soil evaporation in summer maize field under furrow irrigation condition accounted for 33.0%～34.5% of water consumption in the whole growth period, and there was a good exponential function relationship between relative soil evaporation intensity and surface soil water content and leaf area index. Soil evaporation intensity was comparatively great within 2～3 days after irrigation or rainfall, and it was evidently influenced by atmosphere evaporation intensity.