This study adopted a 3-factor fertilization experiment with nitrogen（N），phosphorus（P₂O₅）and potassium （K₂O）in an incomplete orthogonal design of“3414”（N₀P₀K₀、N₀P₂K₂、 N₁P₂K₂、N₂P₀K₂、N₂P₁K₂、N₂P₂K₂、N₂P₃K₂、N₂P₂K₀、N₂P₂K₁、N₂P₂K₃、N₃P₂K₂、N₁P₁K₂、N₁P₂K₁、N₂P₁K₁），the camellia biomass，tender leaves yield，and dry tea quality of Baiye No.1 were measured. Furthermore，the equations that accounted for the effects of nitrogen，phosphorus，and potassium fertilizers were established and combined with quality traits to determine the amount of fertilizer to be applied. The results revealed that the tender leaves yield of N₂P₁K ₂ treatment was lower than N₂P₂K₀，N₂P₁K₁ and N₂P₂K₃，and camellia biomass was only higher than N₀P₂K₂，The percentage of tea green leaf yield to tea flower biomass was 13.5%，higher than other fertilizer treatments. The N₂P₁K₁ treatment had the second-highest tea green leaf yield and tea flower biomass percentage. However，it showed the lowest content of tea polyphenols，phenylalanine to ammonia ratio，and catechins，indicating superior quality. The tea polyphenol content was 14.31%，and the catechin content was 6.64%，which was significantly lower than that of other fertilizer treatments. By fitting the ternary quadratic equation and the univariate quadratic equation of N，P and K fertilizer and yield of Baiye No.1，the recommended fertilization amount was analyzed as follows：N 349-526 kg/hm² ， P2O5 0-56 kg/hm2 ，K₂O 0-145 kg/hm² ，the recommended optimal fertilizer application rates were N 349 kg/hm² ，P₂O₅ 56 kg/ hm² ，and K₂O 0 kg/hm² . In summary，the soil at the experimental site had high nutrient content of N，P and K. Therefore， the recommended optimal fertilizer application rates were N 349 kg/hm² ，P₂O₅ 56 kg/hm² and K₂O 0 kg/hm² .