阔叶树材组织率的研究

A study on the rate of hardwood tissue

用体视显微新技术研究了44科90属124种阔叶树材的组织率.结果表明,随着木材胞壁率的增加,木材比重是增大的,但是,随着木材孔隙率的增大,木材胞壁率和比重却是减小的;木材壁腔比小于1的有83.9%的树种和95.5%的科;管孔、轴向薄壁组织、木纤维和木射线的体积率分别为18.6%、10.1%、58.0%和13.4%;木材比重、壁腔比和木材各组织的体积率、胞壁率、孔隙率的变异种间大于科间.这些研究为建筑结构材、木材加工、家具、造纸和纤维工业用材提供了实际意义的基础参数.

By means of the new stereologieal microscopy, the rates of tissue of 124 main hardwoods were determined. The results showed that specific gravity of wood increases along with the increase of rate of wood cell walls, but rate of wood cell walls and wood specific gravity decrease as the increase of void of wood; the ratio of woodcell wall thickness to lumen is less than 1 for beth 83.9% tree species and 95.5% family; the volume rate of pore, longitudinal parenchyma, wood fibre and wood ray is 18.6%, 10. 1%, 58.0% and 13.4%, respectively; the variation between species is larger than one between family for specific gravity of wood, ratio of woodcell wall thickness to lumen and rate of volume, cell wall and void in the wood tissue. The study provided basic data of a practical and significant reference for construction timber utilization, woodwork, furniture making, paper making and fiber industry.