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首页> 外文期刊>Wood and Fiber Science >Wood property variation in Acacia auriculiformis growing in Bangladesh.
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Wood property variation in Acacia auriculiformis growing in Bangladesh.

机译：孟加拉金合欢生长的木材特性变化。

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This study examined the radial variations of wood properties in 11-yr-old Acacia auriculiformis grown in Bangladesh having diameters of 222 ± 38 mm. The basic density, fiber length, and fiber length increment increased up to about 80 mm radial distance from the pith and then were almost constant toward the bark. The compressive strength (CS) increased from the pith to 50 mm and then became nearly constant to the bark. Conversely, the specific compressive strength, the ratio of CS to air-dried density, was almost constant from pith to bark, indicating positive relationships. However, the air-dried density explained only 50% variation of the CS. On the basis of radial variation of basic density, the core wood and outer wood boundary can be delineated at 70 - 90 mm from the pith. Similarly, the fiber length and fiber length increment curves showed that this boundary could be marked at 60 - 90 mm from the pith. The selected wood properties except CS varied significantly among the trees, which indicated the potential of tree selection for wood quality improvement through tree breeding.
机译：这项研究检查了孟加拉国生长的直径为222±38 mm的11岁金合欢木的木材特性的径向变化。基本密度，纤维长度和纤维长度增量距髓核的径向距离增加至约80 mm，然后朝向树皮几乎恒定。抗压强度（CS）从木髓增加到50毫米，然后变得几乎恒定到树皮。相反，比抗压强度，CS与风干密度之比，从髓到树皮几乎恒定，表明呈正相关。但是，风干密度仅解释了CS的50％变化。根据基本密度的径向变化，可以在距木杆70-90毫米处勾勒出芯木和外木的边界。类似地，纤维长度和纤维长度增量曲线表明该边界可以在距髓距60-90mm处标记。树木之间除CS以外的其他木材特性差异很大，这表明树木选择可通过树木育种提高木材质量。

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