赤皮青冈家系苗期生长特性及初步选择

Growth Characteristics and Preliminary Selection of D ifferent Families of Cyclobalanopsis gilva′s Seedlings

于2017年,在福建宁化国有林场开展12个赤皮青冈家系的造林试验,对家系成活率、保存率和生长状况进行调查,筛选优良家系。结果表明,12个家系造林当年的成活率较高,平均为86.2%;2年生苗木保存率差异显著,保存率在55.6%~86.7%之间,平均为73.5%。苗高、地径和生物量在不同家系之间差异显著,苗高在0.90~1.42 m之间,平均为1.17 m;地径在1.22~1.98 cm之间,平均为1.62 cm;单株干生物量在58.0~139.8 g之间,平均为100.8 g。根据聚类分析,初步确定CW_(1)、CW_(5)和CW_(12)为优良家系。研究结果可为筛选赤皮青冈优良种质资源提供参考。

In 2017,12 Cyclobalanopsis gilva families were planted in State Forest Farm of Ninghua,Fujian Province.The survival rate,preservation rate,and growth of these families were investigated.The results showed that the seedlings’survival rates of 12 families were relatively higher,and the average survival rate was 86.2%.There was a significant difference in the preservation rate of the two-year-old seedlings.The average preservation rate was 73.5%,which varied from 55.6%to 86.7%.The seedling height,ground diameter and biomass differed significantly among the different families.The seedling height varied from 0.90 m to1.42 m with an average of 1.17 m,the ground diameter varied from 1.22 cm to 1.98 cm with an average of 1.62 cm,the biomass varied from 58.0 g to 139.8 g with an average of 100.8 g.Based to the cluster analysis,CW_(1),CW_(5) and CW_(12) were preliminarily identified as superior families.The result provided a preliminary basis for the selection of suitable C.gilva in study area.