中国水利

灌溉水有效利用系数是表征灌溉用水效率的主要指标，也是我国实行最严格水资源管理制度用水效率控制红线的重要考核指标。监测数据表明，随着国家节水改造投入力度持续加大和灌区管理水平不断提高，大型、中型、小型灌区和纯井灌区灌溉水有效利用系数均不同程度得到提高，但与节水灌溉标准相比，仍有提升潜力。灌区和区域灌溉水有效利用系数受输水工程设施、田间灌水技术、灌区管理等因素以及灌区规模、灌区自然条件等自然属性影响，不同灌区、区域差异较大，其提升潜力应综合考虑节水高效、经济合理、生态健康等要求，系统分析，科学评价。提高灌溉水有效利用系数是一项系统工程，涉及水利、农业等多个部门，应统筹考虑、系统施策、协同施力、加快推进。

The effective utilization coefficient of irrigation water is a key indicator of irrigation water use efficiency and serves as an important assessment metric under China's strictest water resources management system. Monitoring data indicate that, with increased national investment in water-saving renovation and improved management in irrigation districts, the effective utilization coefficient has improved to varying degrees across large, medium, small, and pure well irrigation districts, but there is still potential for improvement compared to water-saving irrigation standards. Influenced by factors such as water conveyance infrastructure, field irrigation techniques, and irrigation district management, as well as inherent attributes like district scale and natural conditions, the effective utilization coefficient varies across districts and regions, and its improving potential should be analyzed systematically and evaluated scientifically, taking into account the requirements of water conservation, high efficiency, economic rationality and ecological health. Improving the effective utilization coefficient of irrigation water is a systematic endeavor involving multiple sectors, including water resources and agriculture, necessitating integrated considering, systematic approach, coordinated efforts,and accelerated implementation.