【摘要】 文中通过试验研究得出,辽宁地区潜水蒸发为:①随地下水埋深的变化规律是当潜水埋深很小时,潜水蒸发随潜水埋深的增大而变化不大;②随土质特性变化的规律是在潜水埋深较浅时,土壤颗粒越粗,潜水蒸发量越大;③随作物生育期变化的规律是潜水蒸发量随着埋深的增大而减小;④随降雨变化的规律是潜水蒸发受降水影响,在地下水埋深小于1.0m范围内表现较为明显。更多还原

【Abstract】 Through the test study, some results of phreatic evaporation in Liaoning area are obtained. For the variation law of the groundwater depth, the phreatic evaporation changes little with increasing of phreatic water depth while the phreatic water depth is very shallow. For the variation law of soil properties, more coarse soil particles, the greater the amount evaporation while the phreatic water depth is shallow. For the variation law of crop growth period, the phreatic evaporation is decreasing with the increasing of groundwater depth. For the vari- ation law of precipitation, the influence of precipitation on phreatic evaporation is obvious while groundwater depth is less than 1meter.更多还原