摘要： 在大田及防雨旱棚池栽控水条件下对土壤水分与冬小麦产量形成的关系及节水灌溉方案确立进行了研究。结果表明，小麦产量形成的起点土壤含水量为田间持水量的30%,最佳产量形成的土壤含水量为田间持水量的80%,土壤含水量超过80%,产量下降；小麦最高产量年耗水量为9000mm/hm2,经济产量年耗水量在6000mm/hm2左右，高产麦田的节水灌溉方案为底墒水、拔节水和灌浆水。

关键词: 冬小麦, 土壤水, 产量形成, 灌溉方案

Abstract: T he relations be tw een so ilw a ter and y ie ld fo rm a tio n and de te rm ina tion o f w a ter- sav ing irr ig a tion schem e in w in ter w hea t f ields and rain-pro o f shelte r have been studied. T he resu lt s show: the star ting po int o f y ie ld fo rm a tion is relat ive w a te r con ten t 30% ， the best po in t o f y ield fo rm at ion is relat ive w a te r con ten t 80% ， if so il w a ter con ten t is m o re than re l- a t ive w a ter con ten t 80% , y ield decreases， the m ax im um w heat y ie ld consum es 9000m m /ha o f w ate r， the econom ic w heat y ie ld consum es 6000m m /ha 2 o f w ate r， the w a ter-sav ing irr ig a- t ion schem e in h igh-y ie ld w hea t f ield consists o f base w a ter, jo in ting w a ter and g ra in f illing w a ter.

Key words: Winter wheat, Soil water, Yield formation, Irrigation scheme

中图分类号: 

• S512.1