我省水稻灌区水源不足,因而也限制了水稻面积的发展。故开源节流,提高水的生产效率(指每立米灌溉水获得的产量)是灌溉管理中的一项极为重要的措施。几年来,我省的灌溉试验及实践表明,间歇灌溉及利用回归水灌溉,是水稻灌区开源节流,提高产量的重要途径。现分述如下。 Insufficient rice irrigation areas in our province, which also limited the development of rice area. It is therefore an extremely important measure in irrigation management to increase income and reduce expenditure and to increase the production efficiency of water (referring to the yield per cubic meter of irrigation water). Over the past few years, irrigation experiments and practice in our province have shown that intermittent irrigation and the use of return water irrigation is an important way to increase income and reduce expenditure and increase production in paddy irrigation areas. Now is as follows.