刚果12号桉W_5无性系计量施肥及校验研究  

Calibration Study of Calculate Fertilization for Eucalyptus ABL12 W 5

作　　者：胡曰利[1] 吴晓芙[1] 王尚明 陈孝 杨伟东 

机构地区：[1]中南林学院资源与环境学院,中国湖南株洲412006 [2]雷州林业局,中国广东湛江524348

出　　处：《中南林学院学报》2000年第3期49-53,共5页Journal of Central South Forestry University

基　　金：国家"九五"攻关专题!纸桨林微生物应用与施肥技术研究的部分内容

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 ,结合林分的目标产量 ,提出了浅海沉积物砖红壤条件下刚果 12号桉 W5的施肥量 ,并布置了肥效校验田间试验 .田间施肥试验表明 :对浅海沉积物砖红壤条件下刚果12号桉 W5 的后期生长 ,单施氮肥和磷肥对胸径和蓄积量生长都无显著性作用 ,增大钾肥的施用量对蓄积量的生长有明显促进作用 .试验区该无性系 6a达到 180 m3合适的配方量是 :N2 85 kg/hm2 ,P62 kg/hm2 ,K185 kg/hm2 .Based on the determination of soil balance absorptable phosphorus and soil potassium buffer capacity, and the site nutrition effect model and target biomass, the amount of fertilization was proposed and a field calibration study was conducted about Eucalyptus ABL12 W5 in the laterite formed by shallow seas sediments. The results showed that (1) Applying N and P individually had no significant effects on the growth of diameter at breast height (DBH) and tree stock of Eucalyptus ABL12 W5 in the later growing stage; (2) Increasing the amount of K remarkablely increased the tree stock growth; (3) To reach 180 m 3 within 6 years, the proposed recipe was N 285 kg·hm -2 , P 62 kg·hm -2 and K 185 kg·hm -2 .

关 键 词：刚果12号桉 计量施肥 无性系 砖红壤 

分 类 号：S792.39[农业科学—林木遗传育种] S725.5[农业科学—林学]