干旱地区农业研究2018，Vol.36Issue(1)：115-120,163,7.DOI:10.7606/j.issn.1000-7601.2018.01.18
杨凌地区冬小麦—夏玉米水分供需适配性分析
Water supply and requirement of winter wheat and summer maize in Yangling
摘要
Abstract
Basing on daily precipitation from meteorological observation station of Northwest Agriculture and Forestry University in 1984—2015,the effective precipitation during growth stages of winter wheat and summer maize was calcu-lated.The precipitation characteristics during the growing period of winter wheat and summer maize in Yangling demon-stration area in recent 32 years were quantified by trend analysis and mathematical statistics.The results showed that the effective precipitation for winter wheat and summer maize was unstable.Winter wheat had the largest variation of effective precipitation during the emergence and winter stage with a coefficient of variation of 140%,followed by reviving jointing stage.The precipitation in this area is difficult to meet the requirement of wheat before winter and the jointing stage.The biggest variation was indentified at sowing and seedling stage.At jointing and grain filling stage,it is difficult to meet the water demand of maize.关键词
冬小麦-夏玉米/有效降水/需水量/水分供需适配性/杨凌示范区Key words
winter wheat-summer maize/effective precipitation/water demand/water supply and requirement adaptation property/Yangling demonstration zone分类
农业科技引用本文复制引用
姚德龙,高繁,李志军,胡田田..杨凌地区冬小麦—夏玉米水分供需适配性分析[J].干旱地区农业研究,2018,36(1):115-120,163,7.基金项目
2015公益性行业(农业)科研专项经费(201503124) （农业）
