首页 | 本学科首页   官方微博 | 高级检索  
     检索      

夏玉米耗水规律及水分胁迫对其生长发育和产量的影响
引用本文:孙景生, 肖俊夫, 段爱旺, 张淑敏, 张寄阳.夏玉米耗水规律及水分胁迫对其生长发育和产量的影响[J].玉米科学,1999,7(2):045-048.
作者姓名:孙景生  肖俊夫  段爱旺  张淑敏  张寄阳
作者单位:水利部、中国农科院农田灌溉研究所 河南新乡 453003
基金项目:国家“九五”重点科技攻关项目,中国农科院院长基金
摘    要:依据灌溉试验资料,研究夏玉米生育期内的耗水规律及植株蒸腾与棵间蒸发变化规律,分析水分胁迫对其生长发育和产量形成的影响。结果表明,水分适宜处理的夏玉米,生育期耗水量425.25mm,各时段耗水量占全生育期耗水量的百分比分别为14.34%、10.49%、10.43%、15.70%、27.16%、13.63%和8.25%,相应的日平均耗水强度分别为4.064、2.973、2.958、4.452、7.699、3.860和2.192mm/d;玉米田的棵间蒸发量较大,约占其整个生育期总耗水量的35%~38%;各生育时段遭受水分胁迫均会引起一系列不良后果,其中尤以抽雄吐丝前后40d左右缺水影响最大,其次是拔节期缺水。

关 键 词:夏玉米    耗水规律    水分胁迫    产量与水分关系
收稿时间:1998/5/19 0:00:00

The Effect of Water Consuming Law and Water Stresson Growth , Development and Yield of Summer Maize
SUN Jing-sheng XIAO Jun-fu DUAN Ai-wang ZHANG Shu-min ZHANG Ji-yang.The Effect of Water Consuming Law and Water Stresson Growth , Development and Yield of Summer Maize[J].Journal of Maize Sciences,1999,7(2):045-048.
Authors:SUN Jing-sheng XIAO Jun-fu DUAN Ai-wang ZHANG Shu-min ZHANG Ji-yang
Institution:Farmland Irrigation Research Institute of CAAS 453003
Abstract:Based on the data from irrigation experiment, the water consuming law,changing patterns of plant transpiration and interrow evaporation during summer maize growth were studied and the effect of water stress on the growth,development and yield formation also analyzed. It has been shown that the water consumption of summer maize for the suitable water treatment was 425.25mm, the water consumption at each period took up 14.3%,10.49%,10.43%,15.70%,27.16%,13.63% and 8.25% of seasonal water consumpion respectively, and average water consumption per day at the corresponding period were 4.064, 2.973, 2.958, 4.452, 7.699, and 2.192mm separately. The interrow evaporation of maize field was relatively high and accoumted for 3538% of seasonal water consumption. The water sterss at various growing stages led to a seasonal water consumption.The water stress at various growing stages led to a series of harmful consequences, especially, eater shortage at 40 days around the tussling stage caused the most harmful effect,next was the water shortage at the jointing stage.
Keywords:Summer maize  Water consuming law  Water stress  Relation between  yield and water
本文献已被 CNKI 维普 等数据库收录!
点击此处可从《玉米科学》浏览原始摘要信息
点击此处可从《玉米科学》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号