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科学施肥是实现水稻优质、高产重要措施之一。然而,水稻施肥是一项技术性较强的工作,实践中一定要因品种特性、土壤肥力、气候因子和栽培条件等灵活掌握。按照一般常识可知:水稻对肥料的需求表现在营养时期、营养临界期和营养最大效率期。如早稻生育期短,需肥量相对要少,施肥要早而集中。中稻、晚稻生育期较长,需肥量大,吸收强度大,则应增加追肥
Scientific fertilization is one of the important measures to achieve high quality and high yield of rice. However, rice fertilization is a highly technical work, which must be handled flexibly due to variety traits, soil fertility, climatic factors and cultivation conditions. According to common sense, we can see that the demand for fertilizers for rice is manifested in the periods of nutrition, critical period of nutrition and maximum efficiency of nutrition. Such as early rice growth period is short, the amount of fertilizer needed to be less, fertilization to be early and concentrated. Medium rice, late rice growth period is longer, the need for large amount of fertilizer, absorption intensity, should increase topdressing