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当前位置: 首页 > 文章 > 不同倾斜角度对应力木生长应力、木材密度和干缩性质的影响 安徽农业大学学报 2009,36 (2) 184-188
Position: Home > Articles > Effects of different angles on the growth stress,wood density and wood shrinkage of the reaction wood Journal of Anhui Agricultural University 2009,36 (2) 184-188

不同倾斜角度对应力木生长应力、木材密度和干缩性质的影响

作  者：
刘倩;刘盛全;刘亚梅
单  位：
安徽农业大学林学与园林学院
关键词：
倾斜角度;应力木;生长应力;基本密度;干缩性质
摘  要：
通过在安徽农业大学人工林场选取3年生马尾松实生苗和1年生杨树扦插苗进行栽培(其中马尾松杨树各60株,每12株为1组,共5组,每组对应1个角度,共5个角度0°、15°、30°、45°和60°),跟踪测定其生长应力指示值(growth stress indicator,简称GSI)、基本密度、干缩性质,并对它们的关系进行研究。结果表明:(1)杨树、马尾松GSI绝对值大小和倾斜角度呈显著正相关关系;(2)杨树、马尾松的基本密度和倾斜角度都呈显著正相关关系;(3)杨树、马尾松径向干缩率和倾斜角度关系不显著,杨树、马尾松轴向干缩和倾斜角度呈正相关关系,杨树弦向干缩和倾斜角度呈正相关关系,马尾松弦向干缩和倾斜角度呈负相关关系;(4)杨树应拉木区的弦向干缩大于对应拉木区,径向干缩变化不大;马尾松应压木区的弦向和径向干缩均小于对应压木区,应力木区的轴向干缩远大于对应力木区。
译  名：
Effects of different angles on the growth stress,wood density and wood shrinkage of the reaction wood
作  者：
LIU Qian,LIU Sheng-quan,LIU Ya-mei(School of Forestry and Landscape Architecture,Anhui Agricultural University,Hefei 230036)
关键词：
angle;reaction wood;growth stress;basic density;wood shrinkage
摘  要：
In this paper,we select the 3-year-old pine seedlings and the 1-year-old poplar cuttings for plantation from artificial forest of Anhui Agricultural University(Both the number of poplars and pines are 60.There are 5 groups and 5 angles 0°,15°,30°,45°and 60°.Each group contains 12 and corresponds to a angle)to determinate the growth stress indicator,(GSI is called for short)wood density and wood shrinkage for researching.The results show that:(1)There is a significant positive correlation between the GSI absolute size of poplars and pines and the angle.(2)There is a significant positive correlation between the basic density of poplars and pines and the angle.(3)The relationship between the radial shrinkage rate of poplars and pines and the angle is not significant.There is a positive correlation between the axial shrinkage rate of poplars and pines and the angle.The correlation between the tangential shrinkage rate of poplars and the angle is positive,and the pine shows a negative correlation.(4)The poplar tangential shrinkage is larger in tension wood area than that in opposite wood area,and the change of poplar radial shrinkage is not much.Both the pine tangential shrinkage and radial shrinkage are less in compression wood area than that in opposite wood area.The axial shrinkage is much larger in reaction wood area than that in opposite wood area.

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