论文部分内容阅读
２６年生马尾松种源试验林研究结果表明种源间生长量、材性存在着显著的差异。广东高州种源马尾松树高、胸径和材积是当地种源（湖北当阳）的１．６倍、１．５倍和２．９１倍。广东高州种源木材管胞较长（３２７６μｍ）、长宽比大（７３．２１）、壁腔比小（０．４３３）、腔径比大（０．７５６），这些特征值均优于其它种源；广东高州种源木材密度较小（０．３８４ｇ／ｃｍ３），低于当地种源，但其单位面积上干物质量是当地种源的３．１６倍。高州种源马尾松木材纤维素、综纤维素含量高，木素含量低。综合评估广东高州马尾松种源是鄂中丘陵岗地造纸用材林培育基地的优良种源。
The results of 26-year-old Pinus massoniana provenance trial showed that there was a significant difference in growth and material between provenances. The height of Pinus massoniana provenance in Gaozhou, Guangdong Province was 1.6 times, 1.5 times and 2.91 times that of the local provenance (Dangyang, Hubei Province). The species traits of Gaozhou in Guangdong were longer (3276μm), larger aspect ratio (73.21), smaller wall cavity ratio (0.433) and larger cavity diameter ratio (0.756) Provenances. The density of provenance wood was low (0.384g / cm3) in Gaozhou, Guangdong, which was lower than the local provenances, but the dry matter per unit area was 3.16 times of that of native provenances. Gaozhou provenance Pinus massoniana wood cellulose, high holocellulose content, low lignin content. The comprehensive assessment of the provenance of Pinus massoniana from Gaozhou in Guangdong is an excellent provenance for the cultivation base of paper-making timber in hilly area of Hubei Province.