| 地下水埋深对作物产量与水分利用效率的影响及作物系数变化 |
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| 引用本文： | 武朝宝.地下水埋深对作物产量与水分利用效率的影响及作物系数变化[J].地下水,2011(4):20-23. |
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| 作者姓名： | 武朝宝 |
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| 作者单位： | 山西省汾河灌溉管理局中心试验站; |
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| 摘 要： | 采用排水式蒸渗仪试验,研究不同地下水埋深对冬小麦和春玉米产量和水分利用效率的影响及其作物系数的变化,表明冬小麦和春玉米生育期的地下水位分别控制在1.5 m和1.0 m以下时产量和水分利用效率最为适宜,作物系数随地下水埋深的变化而变化,幅度可达到0.5～0.6,作物系数最大值处于1.2 m埋深处。研究结果可为地下水埋深较...
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| 关 键 词： | 地下水埋深 作物产量 水分利用效率 作物系数 冬小麦 春玉米 |
Effect of Groundwater Depth on Crop Output & Water-used Efficiency and the Change of Crop Coefficients |
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| WU Chao-bao.Effect of Groundwater Depth on Crop Output & Water-used Efficiency and the Change of Crop Coefficients[J].Groundwater,2011(4):20-23. |
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| Authors: | WU Chao-bao |
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| Institution: | WU Chao-bao(Fenhe Irrigation Administration Center Experiment Stations of Shanxi Province,032107,Shanxi Province,China) |
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| Abstract: | The crop yield,water-used efficiency and the crop coefficients of winter wheat and spring maize are investigated under different groundwater depth by using drainable lysimeter.The results show that it is the most useful to reduce the crop yield and water use efficiency of winter wheat and spring maize when the groundwater depth is controlled at 1.5~1.0m below in the growth period of winter wheat and spring maize.The crop coefficients change from 0.5 to 0.6 with the increase of groundwater depth,the maximum ... |
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| Keywords: | Groundwater depth crop yield water use efficiency crop coefficients winter wheat and spring maize |
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