| 灌水延迟对冬小麦产量及水分利用效率的影响研究 |
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| 引用本文： | 褚桂红,李粉婵.灌水延迟对冬小麦产量及水分利用效率的影响研究[J].节水灌溉,2017(3). |
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| 作者姓名： | 褚桂红 李粉婵 |
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| 作者单位： | 山西省水利水电科学研究院,太原,030002 |
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| 基金项目： | 国家科技支撑计划项目，山西省重大水利技术项目 |
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| 摘 要： | 通过田间试验,研究了冬小麦关键生育期灌水延迟对其产量和水分利用效率的影响,结果表明:冬小麦冬浇水延迟20 d灌溉,与优化灌水处理相比,产量与水分利用率均无显著差异;拔节水延迟20 d灌溉,枯水年会显著降低水分利用率,丰水年会显著提高水分利用效率;灌浆水延迟20 d灌溉,枯水年会显著提高产量。冬小麦全生育期内不灌水会极显著的降低其产量和水分利用效率。通过综合分析冬小麦全生育期耗水量、产量与水分利用效率之间的关系,提出半干旱地区冬小麦最佳灌水模式:枯水年份,冬小麦灌浆水延迟20 d灌溉,丰水年份,冬小麦拔节水延迟20 d灌溉,可获得适宜的产量和较高的水分利用效率。
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| 关 键 词： | 灌溉 冬小麦 产量 水分利用效率 |
A Study on the Effects of Delay Irrigation on the Yield and Water Use Efficiency in Winter Wheat |
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| CHU Gui hong,LI Fen chan.A Study on the Effects of Delay Irrigation on the Yield and Water Use Efficiency in Winter Wheat[J].Water Saving Irrigation,2017(3). |
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| Authors: | CHU Gui hong LI Fen chan |
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| Abstract: | Through field experiment,the effects of delay irrigation on the yield and water use efficiency of winter wheat are studied and the results show that:there is no significant difference in yield and water use efficiency when comparing winter watering delay 20 days irrigation treatment with optimized irrigation treatment;water use efficiency will significantly reduce in dry years and significantly improve in wet years when irrigation delayed 20 days at jointing stage;the production will significantly increase in dry years when irrigation at grain filling stage delayed 20 days.The relationship among the total water consumption,water use rate and yield is comprehensive analyzed.The methods for winter wheat irrigation in semi arid areas is put forward that in order to obtain the appropriate yield and higher water use efficiency of winter wheat,the grouting water irrigation delayed 20 days in dry years and the jointing water irrigation delayed 20 days in wet years. |
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| Keywords: | irrigation winter wheat yield WUE |
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