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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (12): 68-72.

所属专题： 玉米

• 农学 农业基础科学 • 上一篇    下一篇

水分胁迫对玉米生长发育及产量形成的影响研究

张淑杰 张玉书 纪瑞鹏   

  • 收稿日期:2010-11-08 修回日期:2011-01-07 出版日期:2011-05-25 发布日期:2011-05-25
  • 基金资助:

    中国气象局气象新技术推广项目

Influences of Water Stress on Growth and Development of Maize and Yield

  • Received:2010-11-08 Revised:2011-01-07 Online:2011-05-25 Published:2011-05-25

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摘要：

采用人工控制水分的方法，研究玉米生长发育和产量形成对水分胁迫的响应。研究结果表明：干旱胁迫导致玉米生长发育缓慢和减产程度的大小，因胁迫时期、胁迫程度及持续时间而不同。干旱胁迫对株高的抑制作用：拔节孕穗期>抽雄吐丝期>苗期，其中苗期株高在复水后得到了超补偿。受水分胁迫影响穗重、穗粒重和穗粒数都呈减少的趋势，变化幅度为穗粒数>穗重>穗粒重，不同生育期干旱胁迫处理的减产幅度为抽雄吐丝期>拔节孕穗期>苗期。苗期、拔节孕穗期和抽穗开花期减产程度分别达到30%、70%和90%以上。

关键词: 控制模型, 控制模型

Abstract:

The response of maize growth and yield formation to water stress were investigated by controlling water in rain-proof shelter. The results showed the degree of slow development of maize and yields decrease resulted from the degree level of water stress vary in different stages. Drought stress on plant height inhibitory effect shows：the jointing Booting stage >the tasselling silking stage> the seedling stage. Drought stress while the control during seedling. The treated plants were rewatered, which the plant height get compensation growth. Affected by water stress ear weight, grain weight and amount of grain were the reduced tendency, which Variation amplitude shows: kernel number > ear weight> grain weight, drought stress in different growth stages reduced production rate shows the tasseling silking stage > the jointing Booting stage > the seedling stage. Water stress in Seedling, jointing booting and tasseling silking stages resulted in degree level of maize yield decreasing to achieve the above 30%, 70% and 90%.