汽蒸、热压处理对马尾松解剖特征的影响

Effect of steaming and press drying on anatomical characteristics of Pinus massoniana

对汽蒸及热压处理后马尾松木射线、管胞和树脂道特征以及组织比量进行分析,并与素材进行比较。结果发现,马尾松汽蒸及热压处理材树脂道直径随着树高的增加而增大,在1.1、4.4和6.6 m处其值分别为136.4、141.3和144.6μm,平均值为140.8μm。素材木射线的高和宽分别为212.0μm和31.3μm,而处理材木射线的高和宽分别为198.3μm和15.5μm,分别减小了6.5%和50.5%。处理后早、晚材木射线比量降低,降幅分别为24.6%和40.4%;而管胞和树脂道比量较素材有所增加,但增幅不大。

In order to lay a foundation for making better use of Pinus massoniana Lamb, the characteristics and the tissues proportion of ray, tracheid and resin canal of the wood treated with steaming and press drying were analyzed and compared with the characteristics of the normal wood. The results show that the resin canal diameter of the treatment wood increases along with the height, the values at 1.1,4.4 and 6.6 m are 136. 4,141.3 and 144. 6 μm respectively ,and the average value is 140. 8 μm. The ray height and width of the normal wood are 212. 0 and 31.3 μm, respectively, while the values of the ray after treatment are 198.3 and 15.5 μm, decreasing by 6.5 % and 50. 5 % ,respectively. Steaming and press drying cause the decrease of proportion of wood ray, and reducing by 24.6% and 40. 4% ,respectively, while the proportions of tracheid and resin canal slightly increase but not notable comparing to normal wood.