旱原地膜冬小麦集雨节水灌溉研究  

Rainwater Collection Irrigation of Film Mulched Winter Wheat in Dry Plain

作　　者：王勇[1,2] 崔明九[1,2] 樊廷录[1,2] 宋尚有[1,2] 

机构地区：[1]甘肃省农科院旱农研究所 [2]甘肃省农科院科研管理处

出　　处：《干旱地区农业研究》1997年第3期57-63,共7页Agricultural Research in the Arid Areas

基　　金："九五"国家旱农攻关项目

摘　　要：旱原地膜冬小麦集雨节灌具有显著的产量和水分效应。试验结果表明，随着有限供水量的增加，冬小麦经济产量相应提高，日耗水量增大，２ｍ土层土壤供水增加，冬小麦水分利用效率和供水效率依次增大。集雨节灌以拔节期效果最佳，增产５７．１％。同时拔节期供水１２ｍｍ，较其它时期等量供水的效率提高２倍～６倍，表现出旱地集雨节灌的超补偿效应。Rainwater collection and water saving irrgation of film mulched winter wheat in dry plain has significant effect on yield increase and water use . The results show that, with the increase of water supply in the soil layer of 2 m depth, the economic yield of winter wheat rises,and water consumption per day and available amount of soil water go up, and also water use efficiency and irrigation water use efficiency increase at the same time. Rainwater collection and water saving irrigation bring about the best result at the jointing stage and a yield increase of 57.1%. And the irrigation water use efficiency at the jointing stage with an irrigation of 12mm can increase 2 to 6 times than that at other stages, which shows the supplimentary effects of rainwater collection and water saving irrigation in dryland.

关 键 词：地膜 冬小麦 集雨节灌 旱原 灌溉 

分 类 号：S512.107.1[农业科学—作物学]