| 栎木应力木生长偏向性分析 |
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| 引用本文： | 罗蓓,杨守禄.栎木应力木生长偏向性分析[J].山东林业科技,2010,40(5):6-9,5. |
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| 作者姓名： | 罗蓓 杨守禄 |
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| 作者单位： | 西南林业大学西南山地森林资源保育与利用省部共建教育部重点实验室; |
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| 摘 要： | 该实验的目的是观察栎木枝条的年轮偏向性和应拉木的显微及化学特性。结果表明,栎木枝桠木髓心偏向上侧,即下侧的生长比上侧迅速。双染色法和SEM的观察发现,胶质层同时发生于枝桠木上下侧的纤维细胞,但上侧的应拉程度比下侧稍显严重。化学分析结果显示,枝桠上下侧的a-纤维素含量仅比正常木高2%~3%,木质素含量仅比正常木低2%~4%。该实验的结论是,栎木枝桠木中反应木同时发生在上下两侧,只是应拉程度有差异,而枝桠木下侧生长迅速造成髓心偏向上侧。
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| 关 键 词： | 栎木 应拉木 年轮偏向性 显微结构 化学成分分析 |
A Study of Growth Ring Eccentricity and Reaction Wood in Oak Branch Wood |
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| Luo Bei,Yang Shoulu.A Study of Growth Ring Eccentricity and Reaction Wood in Oak Branch Wood[J].Journal of Shandong Forestry Science and Technology,2010,40(5):6-9,5. |
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| Authors: | Luo Bei Yang Shoulu |
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| Institution: | Luo Bei,Yang Shoulu(Key Laboratory of Southwest Forest Resources Conservation and Utilization,Ministry of Education Southwest Forestry University,Kunming Yunnan 650224) |
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| Abstract: | The purpose of the study was to observe growth ring eccentricity,occurrence of reaction wood and chemical characteristics in oak branches.Results show that growth ring eccentricity in oak branches occurred on the upper side because of a faster growth rate at the lower side.Double strain and SEM observations indicated that gelatinous fibers occurred both in the upper and lower sides of the branch.But the upper side of the branch has more gelatinous fibers than the lower side.Chemical analyses showed the bran... |
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| Keywords: | Oak tension wood growth ring eccectricity microstructure chemical analysis |
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