合理施肥在于以适宜用量而获得高额产量,是当前水稻高产,减少消耗,降低成本的重要因素之一。氮、磷、钾是水稻需要量多而必要的元素,它随土壤肥力,品种及其计划产量的高低而变异,是一个较大的可变因素。氮磷钾用量的多少,配合用量合理与否?直接影响水稻产量的高低和生产成本,因此,对氮磷钾最佳用量和其最佳配比的研究,随着生产的发展和土壤、气候、品种以及农业技术条 Reasonable fertilization is to obtain high yields with the appropriate amount, which is one of the important factors of high yield, reduce consumption and reduce costs. Nitrogen, phosphorus and potassium are necessary and necessary elements of rice, which vary with soil fertility, variety and its planned yield, which is a big variable factor. Therefore, the research on the optimal dosage of NPK and its optimal ratio, with the development of production and the relationship between soil and climate , Variety and agricultural technology