摘要
根据试验资料，求得产量和水分利用率同时达到最高时的经济灌溉定额为１２０ｍ３／亩，耗水量３００ｍ３／亩；生育期浇返青、孕穗、灌浆３次关键水，每次每亩４０ｍ３左右。以此指导灌溉，可获得最高产量，比传统灌溉制度节水３０％以上。具体实施时，还可根据当地水源条件、地力水平等进行节水农业生产分区，在不同的区内实施不同的节水灌溉制度，如可浇一水、二水、三水或旱作，并将节水灌溉技术与节水农业措施有机地结合起来，提高农业用水的有效性。
The economic irragating quota was 123m3/mu when the yield and water usingefficiency reached the highest at the same time. Three times of key water should be irragated at the stage of turning green,booting and filling during the whole development period and the irragated quantity of each time should be about 40m3/mu.According to this,the highest yield could be obtained.This kind of irragation can save 30% water in contrast with the traditionalirragation also.
出处
《山西农业科学》
1995年第2期3-6,共4页
Journal of Shanxi Agricultural Sciences
关键词
节水灌溉
经济灌溉定额
灌溉制度
冬小麦
Water-saving irragation
Economic irragating quota
Irragation system
Winter wheat
