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基于水平衡测试的石门水库灌区用水效率与提高措施分析

An Analysis of Water Use Efficiency and Improvement Measures in Shimen Reservoir Irrigation Area Based on Water Balance Test

  • 摘要: 汉中石门水库灌区是汉中平原大型灌区,通过水平衡测试分析典型灌区用水效率、研究提高用水效率的措施,对实最严格水资源管理制度的模式、经验与做法具有十分重要的意义。通过对灌区开展点、线、面式的水平衡测试,掌握了灌区水量分配、输水、用水设施运行情况、用水总量和各区域用水之间的定量关系。从测试数据入手,计算灌溉用水效率,结合灌区地貌、作物分布、渠道衬砌等多方面因素,分析灌区灌溉用水效率,研究提高措施。结果表明,灌区在丘陵地区种植水稻与低级渠道输水渗漏是灌区用水损失较大的因素,为灌区提高用水效率与节水方案制定提供了重要依据。

     

    Abstract: Shimen Reservoir Irrigation Area is a large-sized irrigation area in Hanzhong Plains. It is of great significance to study the water use efficiency of typical irrigated areas through water balance test to realize the mode, experience and practice of the strictest water resource management system. By conducting water balance tests of point, line and plane in irrigated area, and the quantitative relationship between water distribution and water delivery, water facilities operation, total water consumption and water consumption in each region is obtained.Based on the test data, this paper calculates the utilization efficiency of irrigation water, analyzes the water use efficiency of the irrigated area by combining the geomorphology, crop distribution, channel lining and other factors, and studies its improvement measurement. The results indicate that in hilly areas, rice planting and water leakage from low level channels are the major factors of water loss in irrigated areas, which provide important basis for water use efficiency and water-saving scheme in irrigated areas.

     

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