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Experimental Study on Effects of Irrigation on Water Consumption and Yield of Winter Wheat
Author(s): 
Pages: 4-7
Year: Issue:  4
Journal: WATER SAVING IRRIGATION

Keyword:  冬小麦作物需水量产量灌溉制度;
Abstract: 2006年10月~2008年5月在山西省运城灌溉试验站进行了两年的冬小麦需水量和灌溉制度试验研究.结果表明,冬小麦的耗水规律为播种~越冬阶段0.48~1.11 mm/d;越冬~返青阶段0.14~1.07 mm/d;返青~拔节阶段0.69~2.10 mm/d;拔节~抽穗阶段2.02~4.27 mm/d;抽穗~灌浆阶段达到最大值3.57~8.62 mm/d;灌浆~收获阶段1.63~3.85 mm/d.冬小麦耗水量与产量呈抛物线关系,为了取得高产和较高的水分利用率,全生育期的耗水量应在380~440 mm之间.在当地气候、土壤及栽培模式下,冬小麦的灌溉制度为全生育期灌水3次,灌水定额60~80 mm,灌溉定额180~240 mm.
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