不同灌水定额对膜下滴灌水稻的影响研究  

The Effect of Different Irrigation Quota under the Mulched on Drip Irrigation for Rice Research

作　　者：韩姝娴[1] 田军仓[1,2,3] 

机构地区：[1]宁夏大学土木与水利工程学院,银川750021 [2]宁夏节水灌溉与水资源调控工程技术研究中心,银川750021 [3]旱区现代农业水资源高效利用教育部工程研究中心,银川750021

出　　处：《中国农村水利水电》2013年第10期6-9,共4页China Rural Water and Hydropower

基　　金："973"计划前期研究专项课题(2011CB111504);宁夏回族自治区科技厅攻关计划项目"旱作水稻膜下滴灌技术试验研究与示范";教育部"长江学者和创新团队发展计划"创新团队项目(IRT1067)

摘　　要：在相同灌水频率的条件下,对不同灌水定额条件下的水稻膜下滴灌试验研究,得出需水规律,覆膜与裸地土壤温度的变化,以及水稻的水分生产效率。研究表明:抽穗开花期是水稻生育过程中需水强度最大的时期,拔节孕穗期次之。相同灌水频率条件下,在覆膜种植的各处理中需水量随着灌水定额的增大而增大,处理3,灌水定额为180m3/hm2时,需水量最大为8 306.85m3/hm2。相应的株高、含水率、水分生产效率、产量也最高。因此180m3/hm2比较适宜的灌水定额。On the basis of the same irrigation frequency, the drip irrigation under membrane experiment on rice under different irrigation quota indicates the water requirement rules, temperature changes of plastic mulching and bare soil, as well as rice water production efficiency. The study shows that： The flowering and head sprouting stage in the rice growth process is water demand strength biggest period, followed by jointing and booting stage. Under the same irrigation frequency conditions, water demand in the process of various mulching planting increases with increasing irrigation quota. When the irrigation quota is 90 ma/hm2 , the maximum water demand is 8 306.9 ma/hm2. At the same time, the corresponding plant height, moisture content, water production efficiency and the output are also the highest. Therefore, 180 ma/hm2 is the comparatively appropriate irrigation quota.

关 键 词：膜下滴灌 水稻产量 对比试验 需水量 

分 类 号：S275.6[农业科学—农业水土工程]