引种树种非洲棟与德宏本地用材树种物理力学性能比较研究

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中图分类号：S776 文献标识码：A 文章编号：2095-2953（2026）01-0001-06

Abstract：The physical and mechanical propertiesof timberbetween introduced Khayasenegalensisandnative timber species （Terminalia bellica，Acrocarpus fraxinifolius，Phoebepuwenensis，Michelia baillnii）were compared to provide fundamental theoretical data and guidance for subsequent applications.The results showed that K ，senegalensis exhibited the highest values in air-dry density （0.872g/cm3 ），basic density（ （0.690g/cm3 ），radial shrinkage coefficient （0.198%） ，volumetric shrinkage coefficient （0.391%） ，impact toughness （ 280kJ/m2 ），and radial surface hardness （6 154.17 N） among all tested species. Its radial shrinkage coefficient （0.198%） and volumetric shrinkage coefficient （0.391%） were higher than those of other tested tree species，but the differential shrinkage was the smallest（O.744）and allshrinkage values fell within Grade1.This indicated thatits wood was not prone to deformation or warping during drying. The modulus of rupture，end hardness，and tangential hardness were measured at 106.793MPa ， 5 075. 0O N and 5 929.167 N， corresponding to Grade 3，Grade 3 and Grade 4 respectively.

However，its modulus of elasticityand longitudinal compressve strength were relatively weak，clasified as Grade 1. In summary， K ， senegalensis demonstrated superior performance in certain properties compared to local species， exhibiting distinct advantageous characteristics.

Key words：Khaya senegalensis ； Phoebe puwenensis； Acrocarpus fraxinifolius ； Paramichelia baillonii； Terminaliabel-lirica ；physical and mechanical properties

木材的物理与力学性能是衡量木材使用价值的重要指标，是木材实际应用中主要的参考价值我国作为木材进口大国，2023年进口木材量达到7740.53万 m3 （折原木材积）[2-3]，对国外进口木材依赖性强。（剩余6942字）