| 宁夏汉延渠灌区灌溉水利用系数测算分析与评价 |
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| 作者姓名： | 姬小敏 唐莲 张红玲 |
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| 作者单位： | 宁夏大学土木与水利工程学院;宁夏回族自治区水利科学研究院;旱区现代农业水资源高效利用教育部工程研究中心;“旱区现代农业水资源高效利用”教育部创新团队 |
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| 基金项目： | 国家自然科学基金(51269022);宁夏2018重点研发计划项目(2018BEG03008);宁夏高等学校一流学科(水利工程学科)项目(NXYLXK2017A03);水利厅重大专项课题(宁夏农田灌溉水有效利用系数测算分析研究201902022)。 |
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| 摘 要： | 农田灌溉水利用系数表示从水源引水被农作物吸收利用的过程,是反应灌区灌溉用水效率的一项指标。本文以汉延渠灌区为例,综合考虑宁夏的气候环境、土壤类型、灌溉制度及作物种植结构等因素,选取典型渠段和样点灌区,分别采用"连乘法"和"首尾法"计算宁夏汉延渠灌区2018—2019年的灌溉水利用系数,并对其进行对比分析评价,从而确定灌区适宜的计算方法。
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| 关 键 词： | 灌溉水利用系数 汉延渠灌区 首尾测算法 连乘法 |
Analysis and evaluation of irrigation water utilization coefficient calculationin in Hanyan canal irrigation district of Ningxia |
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| Authors: | JI Xiaomin TANG Lian ZHANG Hongling |
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| Affiliation: | (School of Civil and Hydraulic Engineering,Ningxia University,Yinchuan 750021,China;Ningxia Institute of Water Resources Research,Yinchuan 750021,China;Engineering Research Center of Ministry of Education for the Modern Utilization of Modern Agricultural Water Resources in Dry Areas,Yinchuan 750021,China;Innovative Team of Ministry of Education for the Effective Utilization of Modern Agricultural Water Resources in Arid Areas,Yinchuan 750021,China) |
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| Abstract: | Farmland irrigation water utilization coefficient represents the process of absorbing and utilizing water from water source by crops,and is an index of irrigation water efficiency in reactive irrigation area.In this paper,taking Hanyan canal irrigation area as an example,taking into account the climatic environment,soil type,irrigation schedule and crop planting structure in Ningxia,the irrigation water utilization coefficient of Hanyan canal irrigation area in Ningxia from 2018 to 2019 was calculated by“continuous multiplication”and“head and tail”method respectively,and then the comparative analysis and evaluation were carried out to determine the appropriate calculation method of irrigation area. |
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| Keywords: | irrigation water utilization coefficient Hanyan canal irrigation area head-to-tail calculation method continuous multiplication |
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