长江流域发展节水灌溉的思考

Consideration on development of water saving irrigation in the Yangtze valley

长江流域灌溉面积占全国的 2 8.4%,粮食产量占全国的 3 5 .5 %,其中水稻占 60 %以上。农业用水量 10 80亿m3,占流域内总供水量的 83 %,灌溉用水量占农业用水量的 77%。为了合理开发利用保护长江水资源 ,应采用工程、农耕及管理措施 ,灌区改制 ,水价改革 ,按量收费 ,用水户参与管理的节水方法 ,使灌溉工程达到节水、省地、增收增效的目的 ,更进一步地发挥长江水资源综合利用的效益。

The irrigation area of the Yangtze valley amounts to 28.4% of the total irrigation area of China, its grain output amounts to 35.5% of the country, while rice production over 60%. The agricultural water is 108 billion m\+3, amounting to 83% of total water supply volume in the valley, and irrigation water amounts to 77% of agricultural water. In order to reasonably develop and utilize water resources of the Yangtze valley, some suggestions are put forward, such as measures of structure, agriculture and management; irrigation area management renovation; water price reform and charging according to volume; joint management with participating-in of water users, through these measures, to realize the objects of saving water and land resources , increasing production and benefit and give full play to comprehensive utilization benefit of water resources of the Yangtze river.