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近几年来,由于灌区生态的恶化,国民经济各部门用水量的持续增加,水资源日益紧张,用水矛盾日益突出,利用有限的水资源保持灌区工农业的可持续发展,建设节水型农业已成为灌区面临的主要任务。多年来,农业用水中包含洗盐用水,林草用水等,而实际上林草用水并非全部是生态用水。经济林,灌溉牧草是以经济产出为目标,而不是以生态保护为目标。本文以青铜峡河西灌区为例,区分生态用水,定量的计算出灌区的生态用水量,使得灌区的生态化建设更贴合实际,有利于指导灌区的水资源优化配置,因为我国灌区的水资源配置大多以经验为主,这种凭经验的做法很难有效的利用水资源,也很难使有效的水资源合理的优化配置。
In recent years, due to the deteriorating ecological environment in the irrigated area, the water consumption of various departments in the national economy continues to increase, water resources are increasingly tense, the contradictions of water use are becoming increasingly prominent, and the sustainable development of agriculture and industry in irrigated areas is maintained with limited water resources to build a water-saving agriculture Become the main task of irrigation district. For many years, agricultural water contains salt water, forest and grass water, etc. However, not all water for forest and grass is ecological water. Economic forests and irrigated pastures target economic output rather than ecological protection. This paper takes Qingtongxia Hexi Irrigation Area as an example to make a distinction between ecological water use and quantitative calculation of the ecological water consumption in the irrigated area so as to make the ecological construction of the irrigated area more practical and conducive to guiding the optimal allocation of water resources in the irrigated area because the water resources Most of the configuration experience-based, this is an empirical approach is difficult to effectively use water resources, it is difficult to rationalize the effective allocation of water resources.