摘要
为了掌握杜仲(Eucommia ulmoides Oliver)材用林的生长状况,探究杜仲木材的材质性状以及生长量与材质性状的关系,调查并测定145株16年生杜仲的生长指标和木材密度,同时测定50个单株的木材纤维指标。结果表明:16年生杜仲树高为5.70~11.20 m,胸径为7.60~23.80 cm。杜仲木材密度为0.52~0.62 g·cm^(-3),木材纤维长为958.00~1 077.00μm,纤维宽为14.68~19.18μm,纤维长宽比为49.90~68.40,胞壁率为41.15%~64.01%,双壁厚为5.90~10.55μm。组织纤维比量中木纤维比量为58.08%~69.89%,导管比量为23.80%~35.56%,木射线比量为0.67%~2.25%,薄壁组织比量为2.11%~8.16%。杜仲树高、胸径与木材基本密度呈极显著正相关,相关系数分别为0.53、0.47。杜仲木材密度较高,达到Ⅲ级。
In order to better understand the growth traits of Eucommia ulmoides Oliver timber plantations, and explore wood properties and its correlations with the growth characteristics, the growth indexes and wood density were under investigated using a total of 145 individual stems in a 16-year-old plantation. Wood fiber index was measured based on samples from 50 stems. Results indicated that 16-year-old tree’s height ranged in 5.70-11.20 m with 7.60-23.80 cm of diameter at breast height(DBH). The wood density was 0.52-0.62 g·cm^(-3). The wood fiber was 958.00-1 077.00 μm in length and 14.68-19.18 μm in thickness, with a length and thickness ratio of 49.90-68.40. Percentage of cell wall was 41.15%-64.01%. Thickness of cell wall was 5.90-10.55 μm. Wood fiber percentage was 58.08%-69.89%. Vessel percentage was 23.80%-35.56%. Wood ray percentage was 0.67%-2.25%, and parenchyma percentage was 2.11%-8.16%. There was a significant positive correlation between tree height and wood density(R=0.53), and between DBH and wood density(R=0.47). Eucommia wood density is higher, reaching Grade III.
作者
唐骏
任跃
刘攀峰
朱景乐
柯书银
肖祥伟
Tang Jun;Ren Yue;Liu Panfeng;Zhu Jingle;Ke Shuyin;Xiao Xiangwei(Research Institute of Non-timber Forestry,Chinese Academy of Forestry,Zhengzhou 450003,P.R.China;Tianmushan State Forest Farm,Pingqiao District,Xinyang)
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2022年第4期95-98,共4页
Journal of Northeast Forestry University
基金
河南省重点研发与推广专项(192102110169)。
关键词
杜仲
木材基本密度
材质性状
Eucommia ulmoides
Wood basic density
Wood properties
