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作 者 ：霍治国,白月明,温民,陈林,胡延龙,叶彩玲

期 刊 ：生态学报 2001年 21卷 9期 页码：1527~1535

关键词：冬小麦；水分胁迫效应；田间试验；

Keywords:winter wheat, water stress effect, field experiment,

摘 要 ：利用大型水分试验场遮雨棚遮挡自然降水 ,采用人工定量补水进行冬小麦土壤含水量占田间持水量 4 0 %～ 5 0 %、4 5 %～ 5 0 %、5 0 %～ 5 5 %、5 0 %～ 60 %、5 5 %～ 60 %、60 %～ 70 %持续时间分别为 5、1 0、1 5 d水分胁迫处理的控制试验。试验结果表明 :控制期结束复水后 ,5 0 %～ 60 %、5 5 %～ 70 %水分胁迫处理能诱发冬小麦根、茎、叶、总生物量显著增长或明显减缓其衰老速率。土壤含水量占田间持水量 5 0 %～ 60 %处理 ,具有明显的增产、节水效应。确定土壤含水量占田间持水量 5 5 %为冬小麦拔节期水分胁迫效应增产节水的水分临界指标。

Abstract:Using large movable rainshelters to keep off precipitation, the field experiments on the effects of treatments of different soil moisture and duration on the growth, development and yield of winter wheat are conducted by controlled irrigation. The responses of the growth, development and yield of winter wheat to water stress are studied, and processes and methods to improve water use efficiency and to mitigate spring drought are also discussed. These studies provide scientific bases for economical irrigatio...

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