调亏灌溉对冬小麦耗水特性和水分利用效率的影响.doc

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调亏灌溉对冬小麦耗水特性和水分利用效率的影响
作者姓名
(作者地址)
摘要以高产中筋冬小麦品种济麦22为材料,在山东兖州小孟镇史王村进行田间试验,:在全生育期降水228 mm条件下,W1(土壤相对含水量:播种期80%+拔节期70%+开花期70%)和W4(土壤相对含水量:播种期90%+拔节期85%+开花期85%)处理总耗水量高于W0(土壤相对含水量:播种期80%+拔节期65%+开花期65%)、W2(土壤相对含水量:播种期80%+拔节期80%+开花期80%)和W3(土壤相对含水量:播种期90%+拔节期80%+开花期80%)处理,W1和W4处理间无显著差异;W1处理增加了0~200 cm土层土壤贮水消耗量,降低了小麦拔节至开花期的耗水模系数,提高了开花至成熟期的耗水模系数;W4处理在开花至成熟期、,W0处理水分利用效率较高,但产量最低;随灌溉量增加,, W1处理灌溉水利用效率和灌溉效益均高于W4处理,为本试验条件下高产节水的最佳处理.
关键词冬小麦; 调亏灌溉; 耗水特性; 水分利用效率
Effects of regulated deficit irrigation on water consumption characteristics and water use efficiency of winter wheat. 作者姓名英文(作者地址英文)
Abstract:Field experiment was conducted to examine the effects of regulated deficit irrigation on water consumption and water use efficiency(WUE)in wheat plants (cv. Jimai 22) at Shiwang Village, Yanzhou, Shandong, China. Under 228 mm annual precipitation precondition, the water consumption amount of treatment W1 (with soil relative water content (SRWC) of 80%, 70% and 70% at sowing, jointing, and anthesis stages, respectively) and W4 (with SRWC of 90%, 85% and 85% at sowing, jointing, and anthesis stages, respectively) were significantly higher than those of W0 (with SRWC of 80%, 65% and 65% at sowing, jointing, and anthesis stages, r