6种江西常见速生阔叶材纤维形态及材性比较

为发展和科学利用速生阔叶工业用材种，对6种江西常见速生阔叶树木荷、苦楝、鹅掌楸、深山含笑、东京野茉莉及檫树的纤维形态及材性进行测定与分析。结果表明：木荷、苦楝、深山含笑、东京野茉莉的纤维都属长细型纤维，具有良好的制浆造纸性能，尤其苦楝属制浆造纸优等材，纤维长度最长，平均纤维长度达1.43 mm。檫树和鹅掌楸制浆造纸性能略差。11～12年生木荷和檫树密度已达中等密度木材范围，其中木荷平均密度最大，平均密度为0.69 g/cm3，但干缩性相对略大，深山含笑尺寸稳定性相对较好；木荷的综合强度最高，抗压强度50.52 MPa，属中级，抗弯强度和抗弯弹性模量分别为141.7 MPa、17.88 GPa，均属高等水平；鹅掌楸综合强度中等，顺纹抗压强度为50.52 MPa、抗弯强度84.99 MPa，抗弯弹性模量14.55 GPa；深山含笑抗弯强度和抗弯弹性模量均可达中等水平，但抗压强度略差；苦楝、东京野茉莉在材性综合强度方面稍差，抗压强度、抗弯强度和抗弯弹性模量方面均属低等水平。

Fiber morphology and wood properties comparison of six common fast-growing broad-leaved trees in Jiangxi Province

The fiber morphology and wood properties of six common fast-growing broad-leaved trees were researched such as Schima superb, Melia azedarach, Liriodendron chinense, Michelia maudiae, Styrax tonkinensis, Sassafras tsumu, which were planted normally in Jiangxi. It showed that, S. superb, M. azedarach, M. maudiae and S. tonkinensis had good performance of pulp and paper for their long and thin fibers, especially for M. azedarach, with the longest fiber which average length of fibers is 1.43 mm. L. chinense and S. tsumu had poor performance of pulp and paper. Density of S. superb and S. tsumu of 11~12 years were in medium level, for example, the average density of S. superb was 0.69 g/cm3. S. superb charged the high combined strength, for which the compressive strength was in medium level for 50.52 MPa, while bending strength and flexural modulus were high for 141.7 MPa and 17.88 GPa respectively; L. chinense charged medium combined strength, for which the compressive strength was 50.52 MPa, while bending strength and flexural modulus were 84.99 MPa and 14.55 GPa respectively; M. maudiae had medium bending strength and flexural modulus, and poor compressive strength; the combined strength of M. azedarach, S. tsumu were poor for their low compressive strength, bending strength and flexural modulus.