江苏省水稻节水灌溉技术推广效益

Benefit analysis of popularization of water-saving irrigation techniques for paddy planting in Jiangsu Province

针对江苏省水资源分布不均,引供水能力不足,供需矛盾日益突出的现状,阐述了推广水稻节水灌溉的必要性,介绍了江苏省主要推广的水稻浅湿灌溉技术、浅湿调控灌溉技术和水稻控制灌溉技术以及'小区示范-扩大示范-大面积推广-全面推广'的推广模式,总结了水稻节水灌溉技术推广的效果.通过1998～2000年的推广实践,累计推广水稻节水灌溉面积418.9万hm2;节水超过124.8亿m3;增产粮食25.5亿kg;投入产出比达到1:103,表明江苏省推广水稻节水灌溉技术达到了节水、增产、增效的目的.

In consideration of non-uniform distribution of water resources, insufficient water supply capacity, and day-by-day aggravation of unbalance between water supply and water demand in Jiangsu Province, it is necessary to popularize water-saving irrigation techniques for paddy planting. In this paper, three kinds of water-saving irrigation techniques and the popularization mode of “demonstration in districts-demonstration expansion-popularization in large areas-general popularization” were introduced, and the effect of popularization of the techniques was summarized. Three-year popularization of the techniques from 1998 to 2000 shows that the total area of water-saving irrigation is up to 4.189×10^6 hm^2, the volume of water saving is more than 12480 million m^3, the total output of rice is increased by 2550 million kg, and the input-output ratio reaches 1 ： 103. The results demonstrate the effectiveness of technique popularization in water saving, output increase, and benefit improvement.