Abstract: The fertilization trial of Pinus elliottii plantation was established on the Quarternary red earth in Yongfeng County of Jiangxi Province.Three year's results show that:(1)The effectiveness of P application alone or combination application of NP,PK,NPK was tangible in this young plantation.The total growth of tree height(H),groundline basal area(GBA),basal area of breast-height(BA) and crown width(CW) of trial plots were higher than those of the control by 35%～45%, 52%～109%,119%～195%, 29%～49% respectively.(2)The current annual increment of H, GBA of various P treatments(P, NP,PK, NPK)over CK was obvious higher than those of the control by 26%～55% and 119%～195%,respectively in the first year after the basal fertilization,and so it was the similar for those of H,GBA in the second year.Meanwhile,the increase of H,GBA and BA of P treatments after another top dressing was still favorable in the third year.The effect of NPK combined application was the best,but there was no significant difference between the effectof NP,PK,P application.There was no obvious difference between various P level treatments.The effect of the P application with same amount as basal fertilization was better than the application of top dressing,or the application of half the amount of the basal fertilization and half of the amount of the top dressing.Excess application of N fertilizer(Urea) with the amount of 100 kg/hm2 N showed obvious nagative effects to the growth of slash pine.3)The final results show that according to the response of young slash pine plantation to fertilization,25～50 kg/hm2 of P2O5 as basal fertilization is enough in the soil type of this test.