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中国农学通报 ›› 2005, Vol. 21 ›› Issue (11): 387-387.

所属专题: 小麦

• 目次 • 上一篇    下一篇

灌水控制下限对冬小麦产量及水分利用效率的影响

张寄阳,孙景生,肖俊夫,李晓东,刘小飞,申孝军   

  • 出版日期:2005-11-05 发布日期:2005-11-05

Effects of Irrigation Low Limits on Yield and Water Use Efficiency of Winter Wheat

Zhang Jiyang, Sun Jingsheng, Xiao Junfu, Li Xiaodong, Liu Xiaofei, Shen Xiaojun   

  • Online:2005-11-05 Published:2005-11-05

摘要: 通过对冬小麦全生育期实施不同土壤水分控制下限,研究冬小麦的耗水规律,分析水分胁迫对其生长发育和产量形成的影响,并建立了产量与水分关系的数学模型。结果表明,不同水分处理的冬小麦耗水规律基本一致,但日耗水强度和总耗水量各处理间差别明显。各生育时段耗水量占全生育期总耗水量的百分比以孕穗灌浆期最大,达到45%;其次为拔节期,在20%左右;越冬期最小,只有4.0%~10.0%。土壤水分控制下限为55%的处理冬小麦水分利用效率最高,约为1.75kg/m3,对应的耗水量在350~400mm之间。

Abstract: By imposing different lower limits of soil moisture on winter wheat grown in non-weighing lysimeter under a rain shelter, the water consumption law, the effects of water stress on growth, development and yield of winter wheat were studied. The yield-water