春小麦是喜水作物,它生育期短,耗水量大,生产1斤小麦籽实需水1,200斤左右,亩产400～500斤小麦每亩地要消耗300立方米水。春小麦生育阶段(4～6月)正处于降雨少、蒸发量大的干旱季节,自然降雨一般仅是作物耗水量的60％。小麦不灌水就不能正常生长,产量就要减少。反之,进行灌溉则增产效果显著。1978年 Spring wheat is a hi-water crop. It has a short growth period and large water consumption. It produces about 1,200 pounds of wheat seed water per kilogram, and consumes about 300 cubic meters of water per mu of 400 to 500 kilograms of wheat per mu. Spring wheat growth stage (April to June) is in the dry season with less rainfall and large evaporation, and natural rainfall is only 60% of the total water consumption of crops. Wheat can not grow normally without irrigation, yield is reduced. Conversely, irrigation is a significant yield increase. 1978