灌溉水有效利用率 meaning in Chinese

irrigation application efficiency

Research about the dynamic changes of soil moisture consumption in the root district of summer maize and the application efficiency of soil water
灌溉条件下夏玉米田根系层水分动态和田间灌溉水有效利用率的研究
The effective utilization rate of agricultural irrigation water is very low . its utilization factor is below 0 . 4 that there are great potentialities on water saving in irrigated regions
农业灌溉水有效利用率低下，灌溉水利用系数不足0 . 4 ，灌区节水有相当大的潜力。