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在江西永丰第四纪红壤上，营造湿地松林进行施肥试验，３ａ的结果表明，施Ｐ或配合Ｎ、Ｋ使树高Ｈ、全林地径断面积ＧＢＡ、全林胸高断面积ＢＡ、冠幅直径ＣＷ等总生长量分别较对照增长３５％～４５％、５２％～１０９％、１１９％～１９５％、２９％～４９％。湿地松连年生长的比较反映出，施Ｐ或配合Ｎ、Ｋ，造林施肥的当年肥效极为显著，Ｈ、ＧＢＡ较对照分别增长２６％～５５％、１１９％～１９５％；其后效在第２年也极显著；第３年结合追肥，其当年Ｈ、ＧＢＡ、ＢＡ生长仍较对照有极显著的增长。在各种施肥处理中，以ＮＰＫ完全肥料的效果最佳，但除与单施Ｐ的ＧＢＡ有显著差异外，ＮＰＫ与ＮＰ、ＰＫ、Ｐ无明显区别，不同剂量Ｐ之间也无明显差异。将Ｐ用作基肥和追肥及其联合施用的效果是，基施远较追施为优；同等剂量时，一次基肥比基、追或追、追各半要优。单追施Ｎ（尿素）在一次施用量较大（１００ｋｇ／ｈｍ２Ｎ）时，则有显著的负效应，以第２年追施尿素的负效应最大。试验表明在该土壤立地条件下，基施Ｐ２Ｏ５２５～５０ｋｇ／ｈｍ２时，对目前的湿地松幼林生长即有足够的效应。
On the red soils of Quaternary in Yongfeng of Jiangxi Province, fertilization experiments were carried out on the wetland pine forests. The results of 3a showed that the application of P or N and K combined the tree height H, the diameter of the whole forest GBA, Diameter CW and other total growth were 35% -45%, 52% -199%, 119% -195%, 29% -49% compared with the control. Compared with successive years, the growth of Pinus elliottii showed that the fertilizer efficiency in the year of afforestation and fertilization was extremely significant when applying P or N and K, H and GBA increased by 26% -55% and 119% -195% respectively compared with the control; Year is also very significant; the third year combined with topdressing, the year of H, GBA, BA growth is still very significant growth compared with the control. In all kinds of fertilization treatments, the effect of NPK complete fertilizer was the best, but there was no significant difference between NPK and NP, PK and P except for GBA with P alone. There was no significant difference between different doses of P. The P as a base fertilizer and topdressing and its combined effect is that the infrastructure facilities far better than the top-dressing; the same dose, a base than the base, chasing or chasing, chasing each half to be excellent. The single top dressing N (urea) had a significant negative effect when the application rate was high (100 kg / hm2N), and the negative effect of topdressing urea was the largest in the second year. The results showed that under the condition of the soil site, when basal application of P2O525 ~ 50kg / hm2, there was enough effect on the current growth of young Pinus elliottii.