水稻无水层灌溉水分生产率分析  

Water Productivity of the Irrigation of Rice without Water Layer

作　　者：奕永庆 周国雄 

机构地区：[1]余姚市水利局,浙江余姚315400 [2]余姚市河姆渡镇水利站,浙江余姚315400

出　　处：《浙江水利科技》2012年第5期24-26,47,共4页Zhejiang Hydrotechnics

摘　　要：通过较长时间小区试验,对水稻3种灌溉方法的产量、用水量、水分生产率进行了研究。结果表明:无水层灌溉与薄露灌溉、习惯灌溉相比,早稻分别增产651,990 kg/hm2,增产率为10.3%、16.5%;晚稻分别增产717,1 175 kg/hm2,增产率为9.9%、17.4%。同时,灌溉水量早稻分别节水830,3 150 m3/hm2,节水率为46%、69%;晚稻分别节水1 410,2 955 m3/hm2,节水率为58%、74%。无水层灌溉早稻、晚稻水分生产率分别为2.67,2.94 kg/m3,达到了国际领先水平。The water productivity of irrigation of rice had been resarched by 3 irrigation methods in the experimehtal plot formahy-yeares. The results showed that the yield of early rice saperate increased by 651 kg/hm^2 and 990 kg/hm^2, increased rate is 10.3% and 16.5%; the yield of late rice saperate increased by 717 kg/hm^2 and 1 175 kg/hm^2, increased rate is 9.9% and17.4%o At the same time early rice save water 830 m^3 and 3 150 m^3 per hactave, sare water rate is 46% and 69% ; late rice save water 1 410 m^3 and 2 955 m^3 per hectare, the rate is 58% and 24%. The water productivity of the irrigation of early riceand late rice saperate is 3.1 kg/m^3, have reach ed advanced level of international.

关 键 词：水稻 无水层灌溉 节水 增产 水分生产率 

分 类 号：S274[农业科学—农业水土工程]