湿地松幼林施肥研究  

The Response of Fertilization on the Young slash Pine Plantation

作　　者：胡炳堂[1] 洪顺山[1] 肖齐绪 李祖勋 

机构地区：[1]中国林业科学研究院亚热带林业研究所,江西省永丰县林业局

出　　处：《林业科学研究》1995年第4期380-387,共8页Forest Research

基　　金："八五"国家科技攻关和林业部世界银行贷款国家造林(NAP)项目

摘　　要：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。The fertilization trial of Pinus elliottii plantation was established on the Quar-ternary 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 wastangible in this young plantation.The total growth of tree height(H),groundline basalarea(GBA),basal area of breast-height(BA)and crown width(CW)of trial plots werehigher 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 similarfor those of H,GBA in the second year.Meanwhile,the increase of H,GBA and BA of Ptreatments after another top dressing was still favorable in the third year.The effect of NPKcombined 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 treat-ments.The effect of the P application with same amount as basal fertilization was betterthan the application of top dressing,or the application of half the amount of the basal fertil-ization 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 slashpine.3)The final results show that according to the response of young slash pine plantationto fertilization,25～50 kg/hm2 of P2O5 as basal fertilization is enough in the soil type of this test.

关 键 词：湿地松幼林 施肥试验 幼林生长 

分 类 号：S791.246[农业科学—林木遗传育种]