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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。
The results showed that: (1) Afforestation using improved seed was more than 22.6%; (2) Based on the results of seven elite families from 23 selected elite families, 46 excellent single plants were selected and their tree height, diameter at breast height and volume increased by 50.5%, 80.54% and 373.07% respectively compared with the control, which had great potential for yield increase. (3) According to the characters of Chinese fir The analysis showed that the growth traits of Chinese fir were close and close, the genetic stability was relatively stable, and it was feasible to choose at the 6-year-old. It also showed that the branch habits could be used as an important index in tree selection.