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对洋口林场杉木第二代种子园自由授粉子代试验林树高、胸径和材积等生长性状研究结果表明 :杉木第二代种子园子代生长在家系间存在着显著差异 ,家系内个体间的遗传分化剧烈。从群体中选出的优良家系及家系内优良的单株造林 ,增产效果显著 ;杉木在树高、胸径和材积等生长性状间有较高的表型和遗传相关性。
The results of the study on the growth traits of free pollination offspring in the second generation of Chinese fir seed orchard in Yangkou Forest Farm showed that there was a significant difference in the growth of the second generation seed orchard in the Chinese fir family between families and the genetic differentiation among individuals severe. Outstanding elite families and their families selected from the group had significant plantation and yield enhancement effects. Cunninghamia lanceolata had higher phenotypic and genetic correlations among the growth traits such as tree height, DBH and timber volume.