不同初植密度巨桉纤维形态变异的研究.pdfVIP

不同初植密度对巨桉木材纤维形态的影响* 1 1 2 闭梅松 邱 坚 ** 姜远标 （1 西南林学院木质科学与装饰工程学院 昆明 650224 2 普洱市林业科学研究所 普洱 665100 ） 摘要：对不同初植密度（2.0m×4.0m、3.0m×3.0m、3.0m×4.0m ）20 年生巨桉(Eucalyptus grandis) 胸径处外缘材纤维 形态特征（纤维长度、宽度、壁厚、腔径、长宽比和壁腔比）进行测定和分析，旨在为定向培育巨桉人工林提供基 础数据。研究结果表明：随初植密度的增大，纤维长度、宽度、壁厚、腔径先增大后减小，以 3.0m×3.0m 的最大； 纤维长宽比和壁腔比先减小后增大， 3.0m×4.0m 的纤维长宽比和壁腔比最大。本研究认为3.0m×3.0m 的纤维形态特 征为最好。 关键词：巨桉人工林；初植密度；纤维形态 Effects on Planting Density on Fiber Configuration of Eucalyptus grandis 1 1 2 QIU Jian BI Mei-song JIANG Yuan-biao (1 Faculty of Wood Science and Decoration Engineering, Southwest Forestry College, Kunming, Yunnan, 650224, China) (2 Forestry Science Institute of Puer Urban, Pu’er, Yunnan, 665100, China) Abstract: This article made determination and analysis in the fiber morphology of Eucalyptus grandis marginal wood in diameter Brest high about 20-year-old in different planting density (2.0 m × 4.0m, 3.0m × 3.0m, 3.0m × 4.0m).The obtained data can provide a reference for plantation orientation Eucalyptus grandis . The results showed that with the planting density increases, the fiber length, width, thickness, lumen diameter increased first and then decreased, 3.0 m × 3.0m planting density is the best. The ratio of length to width and the ratio of cell-wall thickness to lumen diameter decreased first and then increased. The ratio of length to width and the ratio of cell-wall thickness to lumen diameter larger than the others for Planting Density of 3.0m × 4.0m. This study concluded that 3.0 m × 3.0m for the fiber morphology is the b