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１４ａ杉木造林密度试验的结果表明，不同造林密度对杉木林分生长有显著或极显著的影响。随着密度增加，林分的平均树高、胸径、单株材积和冠幅生长减小，而林分的枝下高、高径比和胸高形数则增加，但对林分平均优势高的影响不显著，林分的单位面积蓄积量和出材量以密度Ｃ（１ｍ×２ｍ）和Ｄ（１ｍ×１．５ｍ）最高，同时，对林分的径阶分布也有影响。
The results of afforestation density test of 14a Chinese fir showed that different afforestation density had significant or extremely significant influence on the growth of Chinese fir. With the increase of density, average tree height, DBH, stand volume and crown width of stand decreased, but branch height, height to diameter ratio and chest height of stand increased, but mean stand height But the effect was not significant. The stock volume per unit area and the yield of forest stand were the highest with the density of C (1m × 2m) and D (1m × 1.5m), at the same time, the radial distribution of stand was also affected.