摘要
首次报道了四川桤木 5、 8和 1 1年生 3种树龄木材的化学组分测定结果。与其它制浆阔叶木的比较表明 ,虽然四川桤木的木素含量略高 ,但木材密度适中 ,灰分含量中等 ,各种抽出物含量较低 ,纤维素含量较高 ,是优良的纸浆纤维用材。研究发现 ,木材密度、灰分和热水、苯醇抽出物含量在个体间差异很大 ,而其它组分在个体间较为均一。树龄与木材密度和灰分含量的关系不大 ,而对其它组分影响显著 ,年幼树木的木材抽出物和戊聚糖含量高 ,而木素和纤维素含量低。相关分析说明生长速率对四川桤木引种人工林的木材密度和化学组分作用较小。
Wood chemical compositions of 5 ,8 and 11 yr old Alnus cremastogyne plantations in the plantation area of Fujian Province are reported. Comparing with other hardwood species Alnus cremastogyne is a good species as the raw material of BKP,CTMP or BCTMP etc. There are great differences between trees in wood density,ash content,hot water extractive,1% NaOH extractive and alcohol benzene extractive. The effects of age of the tree on its chemical composition is significant,on the other hand tree age has little effect on wood density and ash content. The younger tree has higher extractives and pentosan content, but lower lignin and cellulose compared with the aged tree. Correlation analysis shows that growth rate has no effect on wood density and chemical composition of Alnus cremastogyne plantations in the plantation area.
出处
《中国造纸》
CAS
北大核心
2000年第4期20-23,共4页
China Pulp & Paper
基金
福建省科委项目!"四川桤木阔叶木浆开发利用研究" (编号 98 Z 51 )
关键词
四川桤木
木材密度
木材化学组分
引种区
福建
Alnus cremastogyne Burk,wood density,wood chemical composition,plantation area
