【摘要】 为给桂东南阔叶树种选择提供参考，以7～9年生红锥（Castanopsis hystrix）、刨花润楠（Machilus pauhoi）、火力楠（Michelia macclurei）、米老排（Mytilaria laosensis）、灰木莲（Manglietia glauca）和白花泡桐（Paulownia fortunei）为研究对象，分析其早期生长及木材密度和纤维特性。结果表明，6个树种年均树高和胸径生长量及木材基本密度、纤维长度、纤维长径比、纤维单壁厚和纤维壁腔比分别为0.87～1.59 m、1.47～1.83 cm、0.256～0.478 g/cm~3、1.09～2.09 mm、30.9～54.1、5.24～9.28μm和0.53～1.07，各指标在树种间均差异显著。木材基本密度与纤维长径比呈显著正相关性。采用TOPSIS法对6个树种进行综合评价，刨花润楠和米老排得分均较高。6个树种中，刨花润楠和米老排生长较快且木材特性较优，可作为广西现有工业用材林树种体系的重要补充。更多还原

【Abstract】 In order to provide reference for broad-leaved tree species selection in southeastern Guangxi, taking7-year-old to 9-year-old Castanopsis hystrix, Machilus pauhoi, Michelia macclurei, Mytilaria laosensis, Manglietia glauca and Paulownia fortunei as research materials, growths, wood densities and fiber characteristics at early stages were analyzed. Results showed that average annual growths of tree height, average annual growths of DBH, wood basic densities, fiber lengths, ratios of fiber length to diameter, fiber single-wall thicknesses and ratios of fiber wall thickness to cavity of six tree species were 0.87-1.59 m, 1.47-1.83 cm, 0.256-0.478 g/cm3,1.09-2.09 mm, 30.9-54.1, 5.24-9.28 μm and 0.53-1.07 respectively. There were significant differences in all indexes among tree species. Wood basic density showed significantly positive correlation with ratio of fiber length to diameter. TOPSIS method was used to comprehensively evaluate six tree species. Scores of M. pauhoi and M. laosensis were higher. M. pauhoi and M. laosensis grew faster and showed better wood characteristics among six tree species, which could be important supplements for existing tree species system of industrial timber forests in Guangxi.更多还原