合理施肥不仅可使稻株正常健康地生育、增产稻谷,而且能维持和提高稻田土壤肥力.而肥效的大小却受许多因素的影响.为了最大限度地发挥施肥的效果,就必须充分考虑到水稻不同品种的营养特性、栽培管理方法、稻田土壤的肥沃度、肥料的使用(种类、成份、性质、比例、施用量、施肥位置、施肥期、施肥法)、当年的气候条件、花费的劳动力、付出的成本、稻谷的产量和经济效益等因素,然后制订施肥计划.盲目过多地施肥,反会产生各种问题,如引起稻株贪菁疯长、倒伏,招致严重的病虫为害,结 Reasonable fertilization can not only make the rice plants grow normally and healthily, increase the yield of rice, but also maintain and improve the soil fertility of paddy so that the efficiency of fertilizer is affected by many factors.In order to maximize the effect of fertilization, we must take full account of the rice Different types of nutrition characteristics, cultivation and management methods, the fertility of paddy soil, the use of fertilizers (type, composition, nature, proportion, application rate, fertilization position, fertilization period, fertilization method), the current climatic conditions, The cost of production, the output of rice and economic benefits, and then formulate a fertilization plan. Too much blindly fertilizing will have various problems, such as causing soaring and lodging of rice plants, causing serious pests and diseases