对 1 8年生杉木种源试验林进行观测分析 ,结果表明 :杉木种源间树高、胸径、材积存在显著的遗传变异 ,但整枝率和树皮率差异不显著。以速生丰产为目标 ,筛选出福建蒲城、建瓯、崇安、广西融水和贵州锦屏 5个优良种源 ,材积现实增益 2 8.9%～ 60 .1 %。 The results showed that there was a significant genetic variation in tree height, diameter at breast height and volume between two provenances. However, there was no significant difference between the rate of pruning and bark. With the goal of fast-growing and high-yielding, five excellent provenances of Pucheng, Jian’ou, Chong’an, Rongshui in Guangxi and Jinping in Guizhou were screened out. The actual gain in volume was 2 8.9% -60.1%.