河西灌区休闲期秸秆覆盖对储水灌溉的影响  

Effects of stubble mulch on storage irrigation during fallow period in Hexi irrigation region

作　　者：施炯林[1] 姚宝林[1] 

机构地区：[1]甘肃农业大学工学院,甘肃兰州730070

出　　处：《甘肃农业大学学报》2005年第4期540-544,共5页Journal of Gansu Agricultural University

基　　金：国家高技术研究发展计划(863计划)资助项目(2002AA2Z4191)甘肃省省长基金项目(RS015-A41-006)。

摘　　要：甘肃河西灌区休闲期采用秸秆覆盖(NTS)的免耕技术对储水灌溉产生了明显的节水和经济效益。直接节约毛水量2400m3/hm2,纯收益免耕覆盖(NTS)比常规耕作(CTB)和秸秆还田(CTS)分别提高1623.7和1367.4元/hm2。适宜的储水定额是900m3/hm2。In Hexi irrigation region, no tillage with stubble mulch （NTS） during fallow period showed significant economical and water saving benefits on storage irrigation. Gross water saving reached to 2400m^3/hm^2. The net income of no tillage with stubble mulch （NTS） was 1623.7 yuan/hm^2 and 1367.4 yuan/hm^2 higher than that of conventional tillage with bare ground （CTB） and conventional tillage with stubble incorporated （CTS） respectively. The optimum storage norm was 900m^3/hm^2.

关 键 词：秸秆覆盖 免耕 储水灌溉 休闲期 

分 类 号：S275.9[农业科学—农业水土工程]