| 不同尺度首尾法及动水法测算灌溉水利用系数对比研究 |
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| 引用本文： | 崔远来,谭芳,王建漳.不同尺度首尾法及动水法测算灌溉水利用系数对比研究[J].灌溉排水学报,2010,29(1). |
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| 作者姓名： | 崔远来 谭芳 王建漳 |
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| 作者单位： | 1. 武汉大学,水资源与水电工程科学国家重点实验室,武汉,430072
2. 湖北漳河工程管理局,湖北,荆门,448156 |
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| 基金项目： | 国家自然科学基金项目(50879060,50839002);;水利部公益性行业专项经费项目(200701002) |
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| 摘 要： | 根据2008年在湖北漳河灌区基于首尾法及动水法开展的不同尺度灌溉水利用系数的测算数据,分析了灌溉水利用系数随空间尺度的变化规律以及2种方法之间不同尺度灌溉水利用系数存在的差异及其原因。结果表明,灌溉水利用系数随空间尺度的扩大呈显明显的降低趋势;各尺度上首尾法获得的灌溉水利用系数值均略大于动水法,原因在于首尾法反应年用水的总体情况,并考虑了回归水的重复利用;不同尺度之间灌溉水利用系数降低幅度比较表明,漳河灌区从干渠到支渠、支渠到斗渠环节的损失最大,是节水改造的主要对象。
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| 关 键 词： | 尺度 首尾法 动水法 灌溉水利用系数 |
Comparision of Irrigation Efficiency under Different Scales |
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| CUI Yuan-lai,TAN Fang,WANG Jian-zhang.Comparision of Irrigation Efficiency under Different Scales[J].Journal of Irrigation and Drainage,2010,29(1). |
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| Authors: | CUI Yuan-lai TAN Fang WANG Jian-zhang |
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| Institution: | 1.State Key Laboratory of Water Resources and Hydropower Engineering Science;Wuhan University;Wuhan 430072;China;2.Hubei Zhanghe Hydranlic Project Administration Bureau;Jingmen 448156;China |
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| Abstract: | Experiment of irrigation efficiency was conducted in Zhanghe Irrigation District,irrigation efficiency under different scales were calculated by head-tail method(HT,measured net irrigation water use and gross irrigation water use) and dynamic water measure method(DWM),the variation laws of irrigation efficiency over scales and the comparision between two different methods were investigated.The result shows irrigation efficiency decreasing remarkably with scaling up.The irrigation efficiency values of HT wer... |
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| Keywords: | scale Head-tail method dynamic water measure method irrigation efficiency |
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