云南松木材材性与生长性状相关性研究

对云南松不同种源及其单株的木材材性与树木生长性状相关性的研究结果表明 :木材纹理度与树木的高生长呈极显著的负相关 ,与木材力学性能有显著的负相关 ;木材的力学性能与树高、胸径呈显著的正相关 ,与木材密度呈正相关性 ,其中密度又与抗弯强度、顺纹抗压强度有极显著的正相关 ;树木的生长性状与木材密度没有明显的相关性。经综合选择 ,从参试的永平试验点 2 8个种源 82个单株及昆明大马山 8个种源 2 2个单株中 ,评选出 8个综合性状较好的优良单株 ,为云南松单板类人造板材良种选育提供了评价依据

Correlation between Wood Characteristics and Growth Characters of Pinus yunnanensis

The correlation between wood characteristics and growth characters of Pinus yunnanensis were studied at the level of provenance and individual. The results of three aspects were obtained. (1) Wood grain was negatively correlated with tree height growth highly significant, and was negatively correlated with timber mechanical properties significant. (2) Timber mechanical properties were positively correlated with tree height and DBH highly significant or significant ,and was positively correlated with wood density (3) Wood density was positively correlated with tensile strength and elastic modulus highly significant; there is no obvious correlation between wood density and growth characters. From 82 individuals of 28 provenances at Yongping site and 22 individuals of 8 provenances at Damashan Kunming site, eight superior individuals were selected out by comprehensive appraisal, which provided the materials for P. yunnanensis superior individual selection of wood base panel production.