夏玉米水分—产量反应系数研究  

Study on reactivity coefficient between moisture and yield of summer corn

作　　者：方文松[1] 朱自玺[1] 刘荣花[1] 王友贺[1] 师丽魁[1] 

机构地区：[1]河南省气象科学研究所,河南郑州450002

出　　处：《干旱地区农业研究》2007年第2期111-114,共4页Agricultural Research in the Arid Areas

基　　金：社会公益研究专项资金项目"黄淮平原农田节水灌溉决策服务系统研究"(2001DIB10089)

摘　　要：利用3 a的试验资料,对夏玉米生长发育期间的气象条件、产量性状、水分利用效率(WUE)和水分—产量反应系数进行了分析。结果表明:夏玉米各个生长发育阶段水分亏缺对产量的影响不一样,其中抽雄期水分亏缺对产量的影响最大,水分—产量反应系数达1.443,说明这个阶段是灌水增产的关键期。The paper utilized experiment data of three years to analyze meteorological condition, yield character, water utilization efficiency （WUE） and reactivity coefficient between moisture and yield in the whole growth stage of summer corn. It was found that the different growth stage on summer corn yield was different; the affection of water stress in tasseling stage was the largest, in which the reactivity coefficient between moisture and yield reaches 1.443. This stage is the key period for irrigation and increasing yield.

关 键 词：夏玉米 水分 产量 反应系数 

分 类 号：S153.01[农业科学—土壤学]