前言由于近些年淡水资源的缺乏,我们从节约灌溉用水的角度进行了节水种稻的研究,试图探求一种能用较少水量来保证水稻生产的灌溉制度。经四年多的试验研究,认为节水型的浅、湿、干结合,适时供水调氮的灌溉制度(简称浅湿灌溉,下同)与生产中现行的灌溉制度相比,不仅节水,而且还能增产,是稻作较为经济合 Preface Due to the lack of freshwater resources in recent years, we have studied water-saving rice from the perspective of saving water for irrigation and tried to find an irrigation system that can ensure rice production with less water. After more than four years of experimental research, it is concluded that compared with the current irrigation system in production, the water-saving irrigation system that combines light, wet and dry with water supply and timely nitrogen supply (referred to as shallow wet irrigation, the same below) not only saves water, But also increase production, it is more economical combination of rice