土面蒸发 meaning in English

evaporation form soil surface

The estimation methods of water requirement , and determination of basal crop coefficient and soil evaporation coefficient under the controlled alternative furrow irrigation in summer maize were studied and verified in the fifth chapter
（ 4 ）夏玉米田棵间土壤蒸发主要发生在灌后几天表层土壤比较湿润的时期内，其中表层土壤含水率和叶面积指数是影响土面蒸发的两个基本因素。