福建林业科技2025，Vol.52Issue(4)：42-48,7.DOI:10.13428/j.cnki.fjlk.2025.04.006
杉木第3代良种与红心杉的生长和木材特征分析
Comparative Analysis of Growth and Wood Properties of Cunninghamia lanceolata 3rd Generation and Red Heartwood Varieties
摘要
Abstract
This study aims to provide a basis for the selection of improved Cunninghamia lanceolata varieties for targeted afforestation by comparing the growth and basic wood properties of the 3rd generation variety with the red heartwood variety.A comparative experi-ment was conducted on a 7-year-old stand.Results indicate that the 3rd generation variety demonstrates superior growth traits,with a height of 7.95 m,a breast height diameter(DBH)of 11.4 cm,and a volume of 0.0483 m3,representing increases of 17.26%,4.59% and 34.92% over the red heartwood variety,respectively.Conversely,the red heartwood variety exhibits a higher red heart-wood rate,at 34.94%,surpassing the 3rd generation variety by 10.7% and the 2nd generation variety by 9.49% .Additionally,the consistency of red heartwood rate in the red heartwood variety was significantly higher compared to the 3rd generation variety,while its growth matches the level of the 2nd generation variety.Both varieties have similar basic wood densities,with the 3rd generation variety at 0.3549 g·cm-3 and the red heartwood variety at 0.3607 g·cm-3,showing no significant difference.Utilizing the 3rd generation variety could improve tree height growth by 16.55%,while selecting red heartwood varieties could enhance the red heartwood rate by 20.08% .关键词
杉木/第3代良种/红心杉/红心材率/木材基本密度Key words
Cunninghamia lanceolata/3rd generation variety/red heartwood variety/red heartwood rate/basic wood density分类
农业科技引用本文复制引用
林泽忠,肖晖,刘美利,苏顺德,罗水金,江晓丽,郑仁华..杉木第3代良种与红心杉的生长和木材特征分析[J].福建林业科技,2025,52(4):42-48,7.基金项目
福建省林业科技项目(2023FKJ18 （）
ZMGG-0801) （）
