南京河海大学和山东省济宁市水利局联合研究的水稻节水高产灌溉新技术——水稻控制灌溉,于1990年9月通过鉴定。水稻控制灌溉技术即根据水稻生长期内各个时期需水量进行灌水。经过多年的研究试验,他们找到了水稻控制灌溉的需水规律是:水稻插秧返青期内,水层控在5～25毫米之间;返青后,耕作层土壤含水量上限控制在饱和 A new technology for water-saving and high-yield irrigation of rice, jointly controlled by Nanjing Hohai University and Jining City Water Conservancy Bureau of Shandong Province, was used to control irrigation of rice and passed the appraisal in September 1990. Rice control irrigation technology that is based on water demand during various stages of rice growing irrigation. After years of research and experiment, they found that the law of water demand for paddy-controlled irrigation is that the water layer is controlled between 5 and 25 millimeters during the greening period of rice transplanting and the upper limit of the soil water content of the cultivated layer is controlled after being green