合理施肥就是要求施肥能达到下列三方面的目的：①施肥能使植物获得高产和优质;②以.少的投入获得.好的经济效益;③改善土壤条件为高产稳产创造良好的基础，要用地与养地相结合。

Reasonable fertilization requires that fertilization can achieve the following three purposes: 1) fertilization can make plants obtain high yield and quality; 2) obtain the best economic benefits with the least investment; 3) improve soil conditions to create a good foundation for high and stable yield, which requires the combination of land use and land cultivation.