引用本文:卢翠香, 兰俊, 陈健波, 吴永富, 邓紫宇, 周维.尾巨桉树轮异常结构的解剖学分析[J].西南大学学报(自然科学版),2019,41(4):72~77
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尾巨桉树轮异常结构的解剖学分析
卢翠香, 兰俊, 陈健波, 吴永富, 邓紫宇, 周维1,2
1. 广西林业科学研究院 国家林业局中南速生材繁育实验室/广西优良用材林资源培育重点实验室, 南宁 530002;2. 广西国有东门林场, 广西 扶绥 532108
摘要:
为了解尾巨桉木材环裂形成原因,通过对木材结构解剖分析,气候数据补充验证,判定尾巨桉木质部环裂与形成层受霜冻伤害产生应激反应及形成异常结构有关.异常结构为霜冻轮,纤维细胞未完全木质化,薄壁细胞量多.霜冻轮的存在对木材的强度、抗虫性和耐腐性产生一定的负面影响.
关键词:  尾巨桉  环裂  异常结构  霜冻轮
DOI:10.13718/j.cnki.xdzk.2019.04.010
分类号:TB322;S718.47
基金项目:广西林业科技项目(桂林科字[2014]第20号,桂林科字[2014]第04号);中央财政林业科技推广项目([2015]TG18号).
Anatomical Analysis of Abnormal Structure of Tree Rings in Eucalyptus
LU Cui-xiang, LAN Jun, CHEN Jian-bo, WU Yong-fu, DENG Zi-yu, ZHOU Wei1,2
1. Key Laboratory of Central South Fast-Growing Tmber Cultivation of Forestry Ministry of China/Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, Guangxi Academy of Forestry Sciences, Nanning 530002, China;2. Guangxi Dongmen Forest Farm, Fusui Guangxi 532108, China
Abstract:
Anatomical analysis was made of the xylem of Eucalyptus urophylla to study the cause for the formation of cracked tree rings, and a supplementary verification was made using the climatic data. The results showed that the formation of xylem ring cracking was related to frost damage. When E. urophylla suffered frost damage, a stress reaction occurred at the cambium, resulting in the formation of an abnormal structure. The unusual structure was frost ring, which had more parenchyma cells and the fiber cells were not fully lignified. The existence of the frost ring had a negative effect on wood strength, insect resistance and corrosion resistance of the timber.
Key words:  Eucalyptus urophylla× E. grandis  ring crack  abnormal structure  frost ring
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