干旱地区农业研究2018，Vol.36Issue(1)：108-114,7.DOI:10.7606/j.issn.1000-7601.2018.01.17
内蒙古东部干旱年份玉米需水规律及灌溉制度优化
The water demand and optimal irrigation schedule of maize in drought years at eastern area of Inner Mongolia
摘要
Abstract
In order to highly utilize the limited water resources of eastern Inner Mongolia in drought years,a three-year(2009—2011)test was carried out in Tongliao city Korqin district to analyze the law of water requirement of maize in drought years.The results showed that the water consumption was high at elongation stage and tasseling stage and low in seedling stage and postulation stage.Furthermore,the water consumption of elongation stage and tasseling stage accounts for more than half of that during the whole growth period of maize.The water consumption intensity was di-minishing in the order of tasseling,elongation,postulation and seedling.A reduction in yield was caused by different wa-ter stress for each growth period of maize in a certain range.The yield reduction by low irrigation at tasseling stage was the most serious.Water productivity and yield was not corresponding to the requirement of water consumption.The pro-ductivity of water resources could be enhanced by the effective water stress.At the same time,the insufficient irrigation in drought years under different irrigation quota of corn is emphasized by this study.关键词
内蒙古东部/干旱年份/玉米/需水规律/水分利用率/灌溉制度Key words
eastern Inner Mongolia/drought years/maize/water demand regulation/efficiency of water applica-tion/optimal irrigation schedule分类
农业科技引用本文复制引用
王颖辉,汤鹏程,李曙光,田雨春,李嘉琪..内蒙古东部干旱年份玉米需水规律及灌溉制度优化[J].干旱地区农业研究,2018,36(1):108-114,7.基金项目
内蒙古东部节水增粮高效灌溉技术集成研究与规模化示范(2014BAD12B03) （2014BAD12B03）
通辽平原玉米喷灌水肥一体化技术研究(NSK2016-S3) （NSK2016-S3）
