地埋滴灌对紫花苜蓿耗水、产量及水分生产率的影响  

Effects of subsurface drip irrigation on water consumption,yield and water productivity of alfalfa

作　　者：曹雪松[1] 李和平[1] 郑和祥[1] 冯亚阳[2] 张松[2] 

机构地区：[1]水利部牧区水利科学研究所,内蒙古呼和浩特010020 [2]内蒙古农业大学,内蒙古呼和浩特010018

出　　处：《干旱地区农业研究》2017年第5期256-262,共7页Agricultural Research in the Arid Areas

基　　金：水利部科技推广计划项目(TG1401);中国水利水电科学研究院科研专项(MK2016J18)

摘　　要：为了探索地埋滴灌紫花苜蓿的最佳灌水量和滴灌带埋设深度,采用田间试验设置15.0、22.5 mm和30.0 mm三种灌水水平与10、20 cm和30 cm三种滴灌带埋设深度处理,研究灌水量、滴灌带埋深对紫花苜蓿耗水量、产量及水分生产率的影响。结果表明:地埋滴灌紫花苜蓿耗水量、产量和水分生产率均随灌水量的增加而显著增加(P<0.01),均随滴灌带埋深的增加先增大(P<0.01)后减小(P<0.05);总生长季紫花苜蓿总耗水量为400~500 mm,总产量为7 500~12 000 kg·hm^(-2),水分生产率为1.80~2.50 kg·m^(-3)。建议地埋滴灌紫花苜蓿采用滴灌带埋深为20 cm,灌水定额为22.5~30 mm,灌水周期5~7 d的灌溉制度。In order to explore the best irrigation volume and buried depth of drip irrigation tape of alfalfa using sub-surface drip irrigation, in this paper, a field experiment was conducted to investigate the effects of irrigation amount, buried depth of drip irrigation tape on alfalfa water consumption, yield and water productivity using subsurface drip irriga-tion. Three irrigation amount （volumes） （15.0 mm, 22.5 mm, 30.0 mm） and three buried depth of drip irrigation tape do cm, 20 cm, 30 cm） were considered in this experiment. The results showed that alfalfa water consumption, yield and water productivity using buried drip irrigation increased significantly （ P 〈 0. 01） with the increase of irrigation amount, but first increased significantly （P 〈 0.01） and then decreased （ P 〈0.05） with the increase of the drip irriga-tion depth. Furthermore, during the whole growing period of alfaHa, the total water consumption was 400 to 500 mm, to-tal yield （output） was 7 500 to 12 000 kg·hm-2, and water productivity was 1.80 to 2.50 kg·m-3 . Hence an irrigation quota （amount） of 22.5 to 30.0 mm, irrigation cycle of 5 to 7 days using buried drip irrigation of alfalfa with the depth of 20 cm was recommended for subsurface drip irrigation of alfaHa.

关 键 词：地埋滴灌 紫花苜蓿 耗水量 水分生产率 灌溉制度 

分 类 号：S275.6[农业科学—农业水土工程]