【摘要】 对12年生3种造林密度的福建柏木材物理力学性能进行测定,结果表明,造林密度与低龄级福建柏木材物理力学性能存在较为密切的关系:造林密度大木材密度也大;造林初植密度大有利于提高前期木材的密度;造林密度对木材干缩性、湿涨性影响规律不明显;福建柏木材稳定性较好,株行距为2m×2m的福建柏木材差异干缩最小,稳定性最优;造林密度对福建柏木材力学性能影响差异较大,对顺纹抗压强度影响较小,对抗弯强度、弹性模量、顺纹抗拉强度影响较大,对木材硬度影响最为显著。更多还原

【Abstract】 the wood physical and mechanical properties of 12-year-old Fokienia hodginsii stands with five different planting densities were studied.The results showed that there were closer relations between planting density and younger age on the wood physical and mechanical properties.Higher planting density had higher wood density.Initial stand density helps to improve the early wood density,but it did not have obvious effect on wood shrinkage and swelling efficiency.Fokienia hodginsii wood had good stability.The stand with plant spacing 2m×2m had the best stability,but it had the least wood shrinkage.There were different effects of planting density on physica1and mechanical properties.it had a smaller effect on compressive strength parallel to the grain,but had a larger effect on modulus of rupture,swelling efficiency and the tensile strength parallel to the grain,especially on wood hardness.更多还原