杉木中幼龄林计量施肥校验研究  

Calibration Study of Calculated Fertilizationfor Young Middle Aged Chinese Fir

作　　者：吴立潮[1,2,3] 吴晓芙[1,2,3] 胡曰利[1,2,3] 张瑞日 黄小平 

机构地区：[1]中南林学院资源与环境学院 [2]广东省仁化县仁化林场 [3]广东省曲江县曲江林场

出　　处：《中南林学院学报》1999年第2期29-33,共5页Journal of Central South Forestry University

基　　金：国家"八五"攻关专题

摘　　要：在测定土壤平衡解吸磷和土壤钾位缓冲容量的基础上，根据林木施肥的立地养分效应模型法，结合林分的目标生物量等，提出了中等立地条件下杉木中幼龄林的施肥量，并进行了校验试验．结果表明：中等立地条件下的杉木中幼龄林，单施氮肥对胸径和蓄积量生长有显著影响，但增大氮肥用量对生长无促进作用．单施磷肥虽有利于杉木胸径生长，但对杉木蓄积量生长无显著影响，增大磷肥的施用量对蓄积量的生长无促进作用．施用钾肥对杉木生长无显著促进作用．试验区杉木中幼龄林合适的施肥量是：氮１２０ｋｇ／ｈｍ２，磷３０ｋｇ／ｈｍ２，钾１５０ｋｇ／ｈｍ２．On the basis of site nutrient effect model, target biomass and the determination of soil balance desorptable phosphorus and soil potassium buffer capacity, the amount of fertilization was proposed and a calibration study was conducted,for youngmiddleaged Chinese fir in the middle site class. The results show: (1) the effect of fertilizing nitrogen individually was significant to the growth of diameter at breast height (DBH) and tree stock,no significance was found when the amount of nitrogen fertilizer was added; (2) although the effect of phosphorus fertilized alone was obvious on the growth of DBH, no significance to the growth of tree stock was found; (3) the effect of applying potassium fertilizer was not obvious on the growth;and (4) The rational recipe was N 120 kg/hm2,P 30kg/hm2 and K 150 kg/hm2.

关 键 词：杉木 中幼龄林 计量施肥 校验研究 

分 类 号：S725.5[农业科学—林木遗传育种] S791.27[农业科学—林学]