江苏省大型渠灌区尾部节水改造技术方案研究

Study on Technical Scheme of Water-saving Reform of Tail of the Large-scale Canal Irrigation Districts in Jiangsu Province

大型渠灌区的尾部节水改造是提高灌区水资源利用率与利用效率,缓解目前灌区用水紧张矛盾的重要措施。分析江苏省大型渠灌区农业灌溉方面普遍存在的问题,以江苏省宿迁市船行灌区为例,提出将大型渠灌区尾部从原灌区分离形成若干独立的小型灌溉系统、进行灌区尾部节水改造的3种可能方案,并通过经济分析对方案进行优选。最终得到在大型渠灌区尾部建立内部小型提水灌溉系统,采用管道输水灌溉和渠道输水灌溉相结合是技术经济效果理想的可行节水技术改造方案,对未来江苏省大型渠灌区的节水改造与发展具有重要的指导意义。

The tail water-saving reform in large-scale canal irrigation districts is an important measure to improve the utilization rate of water resources in irrigation districts and alleviate the current water shortage in irrigation districts.In this paper,the common problems in agricultural irrigation in large-scale canal irrigation districts in Jiangsu are analyzed.Taking Chuanhang irrigation district in Suqian in Jiangsu as an example,three possible schemes for separating the tail of a large-scale canal irrigation district from the original irrigation district to form several independent small-scale irrigation systems and implementing water-saving reconstruction in the tail area of the irrigation district are proposed.The program is optimized by economic analysis.Finally,an internal small-scale water-raising irrigation system is established at the end of the large-scale canal irrigation district.The scheme of using both irrigation with pipe conveyance and irrigation with canal conveyance is a feasible water-saving technology transformation plan with ideal technical and economic effects.This program has important guiding significance for the future water-saving reform and development of large-scale canal irrigation districts in Jiangsu.