撑篙竹秆形结构研究  

Study on the Culm Form Structure of Bambusa pervariabilis

作　　者：黄大勇[1] Huang Dayong(Guangxi Forestry Research Institute,Nanning 530002,China)

机构地区：[1]广西林业科学研究院

出　　处：《世界竹藤通讯》2019年第4期11-15,共5页World Bamboo and Rattan

基　　金：2016年中央财政林业科技推广示范项目“麻竹定向高产栽培技术推广”(项目编号:【2016】TG14号)

摘　　要：选取广西南宁市的撑篙竹作为研究对象,测定竹秆全高、秆材长、胸径和节间数,以及每节间直径、长度和壁厚等秆形指标,统计分析撑篙竹的秆形结构及变化规律。结果表明:撑篙竹全高、秆材长与胸径之间呈显著相关,节间的数量、长度和壁厚等因素与胸径、节间号等秆形指标之间呈显著相关,在拟合的相关方程中以幂函数和线性方程获得较高的估测精度;撑篙竹高径比值随着胸径的增加而降低;自基部至梢部,节间长度呈“短—长—短”的变化规律,最长节间出现在第15~20节;壁厚率呈“高—低—高”的变化规律,基部节间壁厚率大于50%,中部空腔大,壁厚率19%~21%,往梢部壁厚率逐渐增加至40%;节间直径呈“细—粗—细”的变化规律,最粗直径位于7~9节,处于胸高位置之上。秆形特征的研究可为撑篙竹林的抚育管理及竹材利用提供基础参考。Bambusa pervariabilis in Nanning City,Guangxi Zhuang Autonomous Region was selected as the material in this paper,the measurement of the total height,culm length and DBH of bamboo culm,the number of internodes,and the diameter,length and wall thickness of each internode was conducted,which was used for the statistical analysis of the culm form structure and its change rules.The results showed that there is a significant correlation between the total height,culm length and the DBH.The number,length and wall thickness of internodes were significantly correlated with the indexes of culm from such as the DBH and the internode number.In the fitted correlation equations,the higher estimation accuracy was obtained by the power function and the linear equation,the ratio of the bamboo height to diameter was decreased with the increase of DBH.From the base to the tip,the length of the internode showed a change of“short-long-short”,and the longest internode appeared in the 15th to 20th;the wall thickness demonstrated a variation of“high-low-high”,the wall thickness ratio of the base section was greater than 50%,that of the middles 19%~21%with larger central cavity,and that of the tip was gradually increased to 40%;the internode diameter changed with a“fine-rough-fine”rule,the thickest diameter was located between the 7th to 9th internodes above the breast height.The research on the characteristics of culms provided a basic reference for the management and material utilization of B.pervariabilis forest.

关 键 词：撑篙竹 秆形结构 相关性分析 广西 

分 类 号：G63[文化科学—教育学]