Waterefficiencyofirrigation is a key criterion for evaluation of agricultural water saving effect.
灌溉水利用系数是衡量农业节水效果的关键指标。
2
Water – improving the efficiencyofirrigation systems.
提高灌溉系统的效率。
3
The actual water requirements differ according to plant, climate (most of the water withdrawn by plants is for cooling through evaporation) and the efficiencyofirrigation.