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在广东省八一林场试验点 ,对来自全国 11个种子园组的 110个杉木优良家系的苗高生长节律进行了研究 .结果表明 :种子园组间 ,7月初以前存在显著差异 ,以后差异不显著 ;家系间从 6月 1日起始终存在极显著差异 ;与对照比较 ,91.82 %的家系优于对照 ,经 LSD法检验 ,有 3 9.0 2 %和 2 6.3 3 %的家系分别达较显著和显著水平 ;9.0 9%达极显著水平 ;1年生苗高生长在生长的前期与后期 ,存在极显著相关性 ,10月中下旬起 ,秩次相关系数高且趋于稳定 ,达 0 .862～ 0 .912 .
The growth rhythm of 110 high-quality Chinese fir families from 11 seed orchard groups in Guangdong Province was studied at the experimental site of Bayi Forest Farm in Guangdong Province.The results showed that there were significant differences between the seed orchard groups before the beginning of July and the later differences Significantly different between the pedigrees from June 1; 91.82% of the families were better than the control, compared with the control, 3 9.02% and 2 6.33% of the pedigrees were significantly more significant Significant level; 9.09% reached the extremely significant level; 1-year-old seedling height growth in the early and late growth, there is a significant correlation between rank mid-late, the rank correlation coefficient is high and tends to be stable, 0 .912.