干旱地区农业研究2009，Vol.27Issue(4)：37-41,5.
不同灌溉水平对冬小麦耗水构成及利用效率的影响
Effect of irrigation on water consumption composition and use efficiency of winter wheat
摘要
Abstract
Quantitative analysis was made of the situation of soil water use, wat er consumption composition during its growth seasons and key stages as well as w ater use efficiency(WUE) under different irrigation levels in different rainfal l years. Taking Beijing as the typical region, five different irrigation treatme nts were designed (non-irrigation, irrigation 50 mm, irrigation 100 mm, irrigat ion 150 mm and irrigation 200 mm) according to the growth periods of winter whea t, water consumption was determined with neutron probe and water balance method. Then water consumption character of winter wheat in its growth seasons and key ages was analyzed. The results showed that water consumption of winter wheat bec ame larger while increasing irrigation, the largest stage was the jointing and h eading stage, and the seeding stage was the least. Soil water consu mption reduced when increasing irrigation. Rainfall, irrigation and soil water s upply were the chief sources of winter wheat water consumption, the rate of rain fall and soil water supply was larger in less rainfall year, but rainfall was it s main source in rainy year. Water from irrigation became the chief part while i ncreasing irrigation. The yield of winter wheat increased, but water use efficie ncy (WUE) and irrigation water use efficiency (WUEi) reduced while irrigation in creasing. The results show that there are differences in water consumption compo sition and use efficiency of winter wheat during its growth seasons and key stag es under different irrigation levels.关键词
冬小麦/耗水构成/土壤水/水分利用Key words
winter wheat/water consumption composition/soil wat er/water use分类
农业科技引用本文复制引用
孔箐锌,张海林,宋振伟,陈阜..不同灌溉水平对冬小麦耗水构成及利用效率的影响[J].干旱地区农业研究,2009,27(4):37-41,5.基金项目
"948"引进项目(2006-G52(B)) （2006-G52(B）
2008年公益性行业(农业)科研专项(200803028) （农业）
北京都市农业学科群建设项目(XK100190553) （XK100190553）
