【摘要】 利用已选育出的２３个优良家系中２２个优良家系进行造林对比试验，结果表明（１）使用良种造林，其增产潜力在２２．６％以上；（２）从评选出的７个优良家系内选择出４６个优良单株，其树高、胸径和材积分别比对照增产５０．５％、８０．５４％和３７３．０７％，具有极大的增产潜力；（３）根据杉木各性状相关分析表明，杉木生长性状早晚相关密切，其遗传比较稳定，６年生时进行选择是可行的，同时表明分枝习性在优树选择中可作为一项重要指标。更多还原

【Abstract】 Forestation test of 22 fine families from 23 ones showed that forestation with recommended families had 22. 6% of potential output increase; height, D·B·H·and volume or 46 fine plants from 7 fine families increased 50. 58%, 80. 54% and 373. 07% of the control. Relative analysis on poperties of C.lanceolata resulted that growth properties of early period had close relatian with late period, therefore, selection at 6 - year was feasible. Meantime, branching habit was considered as one index for fiue tree selection.更多还原