干旱地区农业研究2017，Vol.35Issue(5)：256-262,7.DOI:10.7606/j.issn.1000-7601.2017.05.38
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
摘要
Abstract
In order to explore the best irrigation volume and buried depth of drip irrigation tape of alfalfa using subsurface 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 irrigation.Three irrigation amount (volumes) (15.0 mm,22.5 mm,30.0 mm) and three buried depth of drip irrigation tape (10 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 irrigation depth.Furthermore,during the whole growing period of alfalfa,the total water consumption was 400 to 500 mm,total 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 alfalfa.关键词
地埋滴灌/紫花苜蓿/耗水量/水分生产率/灌溉制度Key words
subsurface drip irrigation/alfalfa/water consumption/water productivity/irrigation system分类
农业科技引用本文复制引用
曹雪松,李和平,郑和祥,冯亚阳,张松..地埋滴灌对紫花苜蓿耗水、产量及水分生产率的影响[J].干旱地区农业研究,2017,35(5):256-262,7.基金项目
水利部科技推广计划项目(TG1401) （TG1401）
中国水利水电科学研究院科研专项(MK2016J18) （MK2016J18）
