摘要
在闽南低海拔山地开展大果紫檀(Pterocarpus macrocarpus)种源引种试验,对引种的大果紫檀种源的生长和木材材性进行调查测定分析与评价,结果表明,10 a生大果紫檀的保存率以种源3号最高,达81.2%,种源6号最低仅为70%,但种源间保存率差异不显著。大果紫檀2号和3号生长迅速,而前期生长较好的大果紫檀1号后期生长放缓,其树高、胸径和材积均低于大果紫檀2号、3号和4号;10a生不同种源大果紫檀间基本密度和含水率均无显著性差异,但大果紫檀5号的湿胀率显著高于其余5个种源,大果紫檀2号和3号的木材综合强度相对更高。综合引种保存率、生长性状和木材材性分析结果,初步选出大果紫檀2号和3号种源为优良种源,相对更适宜在闽南低海拔立地种植。
An introducing trial of Pterocarpus macrocarpus provenances was established in low altitude mountainous areas of southern Fujian.Investigated and analysed the tree growth traits and wood properties of different provenances at 10 years old.At the same time,planting density test was carried out in combination with introduction.The results showed that there was no significant difference in tree survival rate among different provenances,of which the survival rate of No.3 provenance was the highest,about 81.2%and the survival rate of No.6 was the lowest-only 70%.The No.2 and No.3 provenances grew rapidly,while the No.1 provenance w让h better growth in the early stage,slowed down in the later stage.The tree height,DBH and volume were lower than those of No.2,No.3 and No.4 provenance;There was no significant difference in air dry density and water content among different provenances,but wood swelling efUcacy of the No.2 provenance was significantly higher than the other five provenances.The wood strength of the No.2 and No.3 provenances is high.Based on the comprehensive analysis on survival rate,growth and wood properties,the No.2 and No.3 provenances are relatively more suitable to plant in the southern part of Fujian.
作者
林清锦
LIN Qingjin(Zhangzhou Forestry Bureau,Zhangzhou,Fujian 363000,China)
出处
《林业与环境科学》
2019年第6期32-37,共6页
Forestry and Environmental Science
基金
国家林业局“948”项目
关键词
大果紫檀
种源
引种
生长性状
木材材性
Pterocarpus macrocarpus
provenance
introduction
growth
wood properties
