Annual Gardenia jasminoides seedlings were used for soil pot experiment.The test fertilizers were nitrogen fertilizer(urea,N mass fraction of 46%),phosphate fertilizer(superphosphate,P2O5 mass fraction of 14%),potassium fertilizer(potassium sulfate,K mass fraction of 60%),and no fertilization treatment was used as a control(CK);three combinations of fertilization designs,T1(N fertilizer 0.25 g/ind.,P fertilizer 0.20 g/ind.,K fertilizer 0.10 g/ind.),T2(N fertilizer 0.50 g/ind.,P fertilizer 0.20 g/ind.,K fertilizer 0.20 g/ind.),T3(N fertilizer 0....