摘要
以油麦吊云杉(Picea brachytyla(Franch.)Pritz.var.complanata(Mast.)Cheng ex Rehd.)解析木圆盘为研究对象,通过木材解剖测定其年轮宽度、管胞长度与宽度、管胞腔径/双壁厚度形态特征和木材含水率、干缩性质与密度等材性性状的径向变异规律。结果表明,油麦吊云杉为较速生树种,平均年轮宽度为5.17 mm,在1~17年间均保持较为旺盛的次生生长。管胞长度、宽度、双壁厚和腔径从髓心向外均呈逐渐增加的趋势,分别为1363.98~3498.38 mm、28.41~43.50 mm、4.22~6.55μm和13.74~37.20μm。木材气干含水率呈逐渐增加的趋势,而生材含水率先缓慢增加,后下降趋于平缓。木材干缩率和密度没有明显的变异规律,整体上趋于稳定状态。综合分析,油麦吊云杉较速生,培育人工林可在17~20年间进行采伐,可获得相对较高的木材收益。
In this study,the disks of Picea brachytyla(Franch.)Pritz.var.complanata(Mast.)Cheng ex Rehd.were chosen as the research object,the morphological characteristics of ring width,tracheid length and width,tracheid thickness of double wall,tracheid lumen diameter,and timber character of wood moisture,dry shrinkage property,and density were measured by the wood anatomic method,in order to study the radial variation law of wood properties.The results showed that Picea brachytyla(Franch.)Pritz.var.complanata(Mast.)Cheng ex Rehd.was a relatively fast-growing tree species with an average ring width of 5.17 mm,and maintained vigorous secondary growth from 1 to 17 years.The tracheid length,width,thickness of double wall and lumen diameter increased gradually from the pith to the outside,which were 1363.98−3498.38 mm,28.41−43.50 mm,4.22−6.55μm,and 13.74−37.20μm respectively.The water content of air dried wood showed an increasing trend,and the moisture content of raw wood increased slowly at first,and then decreased gradually.There were no obvious variation in shrinkage rate of wood and wood density,showing a stable state on the whole.The results indicated that Picea brachytyla(Franch.)Pritz.var.complanata(Mast.)Cheng ex Rehd.was a relative fast-growing tree species,and the harvest time could was between 17−20 years,which could obtain a relative high timber income.
作者
彭建
杨岚
李艳梅
莫劲雁
程一伦
辜云杰
李晓清
PENG Jian;YANG Lan;LI Yanmei;MO Jinyan;CHENG Yilun;GU Yun-jie;LI Xiaoqing(Sichuan Academy of Forestry,Chengdu 610081,China;Administrative Office of Wujiao Nature Reserve of Sichuan Province,Jiuzhaigou 623400,China;Jiuzhaigou Bureau of Forestry and Grassland,Jiuzhaigou 623400,China;Sichuan Provincial Key Laboratory of Ecological Forestry Engineering on the Upper Reaches of the Yangtze River&National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River&Rainy Area of West China Plantation Ecosystem Permanent Scientific Research Base,Institute of Ecology&Forestry,Sichuan Agricultural University,Chengdu 611130,China)
出处
《四川林业科技》
2021年第3期7-12,共6页
Journal of Sichuan Forestry Science and Technology
基金
麦吊云杉种质资源遗传多样性保护示范
关键词
油麦吊云杉
解析木
材性
解剖性质
Picea brachytyla(Franch.)Pritz.var.complanata(Mast.)Cheng ex Rehd.
Analytic trees
Wood property
Anatomical properties
