水稻控釋肥及其一次性施肥技術

　　Rice-specific ControlledReleaseFertilizerand ItsOne-offFertilization Technology

　　Rice-specific controlled release fertilizer (R-CRF) is a new type fertilizer with nutrition specialization and longer nutrient releasing period, and it has been proved that it can increase fertilizer use efficiency, reduce fertilizer, save labor and minimize environment pollution. Based on middling fertility field, one-off fertilization of R-CRF by 40~50kg/667 m²could meet the nutrient demand of rice and yield 400~500kg/667 m²gains. This completely simplifies the fertilization technology of rice, but also avoids blind/over fertilizer by farmers. Results showed that this technology can reduce the P and phosphorus nutrients by 20%~25%, increase rice yield by 8%~15%, and increase income by 70~100 yuan/667 m². So far, the technology has been expanded in Guangdong, Guangxi, Hainan and other provinces.