近年来,我县杂交水稻插植面积越来越大。为了探索杂交水稻施肥技术,了解晚造中期不同施肥次数和增施磷、钾肥对增产效果的影响,以便指导大田生产,我们进行了本项试验。(一)试验设计1.试验地:属红泥底田。前作水稻。肥力中等。沙泥比例为0.2:9.8。碱解氮147.5ppm,速效磷22.5 ppm,速效钾92.5 ppm。2.品种:“汕优六号”。 In recent years, our county hybrid rice planting area is more and more big. In order to explore the hybrid rice fertilization technology, understand the late mid-term different fertilization times and the impact of increasing phosphorus and potassium on the yield, in order to guide the field production, we conducted this experiment. (A) Experimental Design 1. Test to: a red mud bottom field. Before rice. Fertility is medium. Sand mud ratio of 0.2: 9.8. 147.5 ppm of alkali nitrogen, 22.5 ppm of available phosphorus and 92.5 ppm of available potassium. 2. Variety: “Shanyou on the 6th.”