旱地不同年型地膜小麦、玉米集雨节灌的产量效应  

Yield Effects of Collecting Rainwater and Water saving Irrgation on Filmmulched Winter Wheat and Corn in Dryland in Different Years

作　　者：王勇[1] 王立明[1] 樊廷录[1] 崔明九[1] 

机构地区：[1]甘肃省农科院旱农所,甘肃兰州730070

出　　处：《农业现代化研究》2000年第5期304-308,共5页Research of Agricultural Modernization

基　　金：国家"九五"科技攻关项目!<陇东高原半湿润偏旱区集水高效农业研究与开发>(96- 0 0 4- 0 4- 0 4)

摘　　要：:1 995— 1 998年度 ,在镇原试区进行的主要粮食作物集雨节灌试验结果表明 :不同年型地膜冬小麦、地膜玉米关键生育期集雨节灌均具有显著的产量效率 ,可明显提高水分利用效率。无论降水年份的异同 ,集雨补灌的最佳时期冬小麦为拔节期 ,玉米为大喇叭口期 ;干旱年低量 (1 2、2 4m m )集雨在最佳时期补灌 ,较其它时期补灌的供水效率冬小麦、玉米分别提高 1 .9— 6 .3、1— 3倍 ,且等量水分在玉米关键期供给较小麦供水效率高 3倍左右 。The rainwater collection and watersaving irrigation of filmmulched winter wheat and corn were conducted at Zhenyuan dryland experiment during 1995-1998. The results showed that critical periods of watersaving in winter wheat and corn were at the jointing stage and the tassel. IWUE increases by 1.9 to 6.3 times and 1 to 3 times irrigated with low amount water from 12 to 24mm at jointing the stage of winter wheat and tassel stage of corn respectively. At the same time, IWUE of the equal amount water used by winter wheat was three times higher than that in corm. It also showed that low amount water supply to different crops and critical growth period has high supplementary effects.

关 键 词：旱地 地膜冬小麦 地膜玉米 集雨节灌 节水灌溉 

分 类 号：S342.1[农业科学—作物栽培与耕作技术] S275[农业科学—农艺学]