Maize is a kind of high-yield and fertilizer-resistant crop. The effect of fertilization on yield is much better than that of other crops. Only by increasing fertilizer input can it exert its high-yield potential. Wang Mi fertilization must achieve a comprehensive and balanced supply of NPK fertilizer, of course, we must consider the content of available nutrients in the soil, for some potassium-rich areas, the current focus should be increased NP fertilizer. Fertilizer application can generally adopt the "one end and one recovery" method. When topdressing time, it is appropriate to use leaf age index 35% (6-7 leaves). With two fertilizations, the previous heavy and light distribution plan was better. Under the fertility level of 350-450kg/mu, the appropriate amount of fertilizer per acre is N16.8-17.3kg, P2O5 12.6-13. 8kg, and the soil K content is lower than 100mg/kg. fat. N fertilization, either liquid or solid, is best applied to wetlands. Fertilizer must be combined with the selection of fertilizer-resistant varieties, increased density, and irrigation. Tangshan Finely Animal Care Co.,Ltd , https://www.faczyme.com