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为比较粤东地区引种的樟树(Cinnamomum camphora)家系早期生长情况,测定分析了3 a生幼林的树高、胸径、材积、地径和冠幅等生长指标。结果表明,各性状在参试家系间均存在极显著差异(P<0.01),材积与树高、胸径、地径和冠幅的相关系数为0.50~0.87,均达到极显著水平(P<0.01)。3 a生材积生长量显著高于对照的家系有11个(P<0.05),入选率为37.93%,与参试群体平均值相比,树高、胸径、材积、地径和冠幅的选择增益分别为22.84%、24.00%、64.72%、12.25%和6.00%。
In order to compare the early growth of Cinnamomum camphora families introduced in eastern Guangdong, growth and development indexes of tree height, DBH, volume, diameter and crown were measured and analyzed. The results showed that there was a significant difference (P <0.01) between the traits of the tested traits in all traits. The correlation coefficient between the product height and tree height, breast diameter, ground diameter and crown width ranged from 0.50 to 0.87 (P <0.01) ). The average growth rate of biomass in 3 years was 11 (P <0.05), and the selection rate was 37.93%. Compared with the average value of the test groups, the tree height, DBH, volume, diameter and crown width The gains are 22.84%, 24.00%, 64.72%, 12.25% and 6.00% respectively.