The paper analyzes the soil water dynamics and water requirement law of alfalfa,feed maize and ensile maize under 3 kinds of water-saving irrigation conditions through experimental study on the crops.

对节水灌溉条件下的蓿、饲料玉米和青贮玉米水量进行试验研究,分同灌溉水平下3种饲草料作物的土壤水动态和水规律。