宁夏引黄灌区适宜节水潜力分析  

Analysis of Appropriate Water-saving Potential of Irrigation Districts of Yellow River in Ningxia

作　　者：张霞[1] 程献国[1] 姜丙洲[1] 

机构地区：[1]黄河水利科学研究院引黄灌溉工程技术研究中心,河南新乡453003

出　　处：《节水灌溉》2009年第3期25-28,共4页Water Saving Irrigation

基　　金：黄河水利科学研究院中央级公益性科研院所基本科研业务费专项资金资助项目"基于生态地下水位约束的青铜峡灌区节水阈值研究"(HKY-JBYW-2007-14);国家自然基金资助项目"农业非点源污染物在排水沟渠中的迁移机理和输出模型研究"(50879027)

摘　　要：宁夏引黄灌区地处干旱半干旱地区,降水少、蒸发大,长期的发展演变形成了以农作物、人工生态和自然生态并存的农业-生态系统。长期的灌排模式造成该区域地下水埋深浅,土壤盐渍化严重,同时特殊的自然地理条件决定了该区域天然植被的生存依赖于灌溉入渗补给的地下水,因而需保证一定的地下水埋深以保证农业生产安全和天然植被正常生长。从分析宁夏引黄灌区适宜地下水埋深入手,采用地下水均衡方程模拟方法,通过对方程各参数概化分析,以适宜地下水埋深作控制,得出宁夏引黄灌区实施节水改造后的适宜引黄水量,进而分析计算宁夏引黄灌区的适宜节水潜力,为宁夏引黄灌区实施节水改造及水权转换提供科学依据和参考。The irrigation districts of Yellow River in Ningxia are located in arid and semi-arid land. There is less precipitation and larger depth of evaporation. Depth of embedment of groundwater is fleet. In this paper, starting from the analysis of appropriate depth of embedment of groundwater in the irrigation districts of Yellow River in Ningxia, using simulation method of groundwater balance equation, based on analysis of every parameter, according to the appropriate depth of embedment of groundwater, the appropriate quantity of irrigation water delivering from Yellow River of irrigation districts of Yellow River in Ningxia after water-saving reconstruction is studied, and then its appropriate water-saving potential is calculated. The result will provide scientific reference for the practice of water-saving reconstruction and water right transfer.

关 键 词：地下水埋深 水均衡 节水潜力 

分 类 号：S274[农业科学—农业水土工程]