樟树地理种源幼林期生长性状差异分析及优良种源初步选择

Analysis on Growth Traits of Young Cinnamomun camphora with Different Provenances and Optimal Selection

对在淳安县许源林场进行的15个樟树地理种源幼林期的生长性状表现进行了调查分析,结果表明,树高、地径、冠幅等性状的生长量在地理种源间存在显著或极显著差异,各种源内个体间也均存在一定的差异,成活率(保存率)的差异则不显著;经综合评价,初步认为XNY种源为参试种源中的最优种源,同时初步确定XJS、EHA、XNY、ZTL 4个种源为淳安适宜引种栽培种源;与淳安本地种源ZCA(对照)相比较,这4个种源3年生高生长量分别提高12.2%、12.2%、5.5%和3.2%,地径生长量分别提高11.3%、13.8%、16.5%和9.2%,冠幅生长量分别提高3.9%、3.3%、8.0%和8.7%。

Afforestation test was conducted with Cinnamomun camphora seedlings of 15 different provenance in Xuyuan Forest Farm, Zhejiang province. Investigation on growth traits of young trees showed that there were obvious differences in height, ground diameter and crown growth among provenances, as well as individual within each provenance, but no significant difference in the survival rate. Comprehensive evaluation resulted that XNY was the best provenance, and XJS, EHA, XNY, ZTL were suitable for introducing in Chun＇an. Compared with the local provenance ZCA（ck）, height growth of 3-year four provenances above-mentioned increased by 12.2%, 12.2%, 5.5% and 3.2%, ground diameter by 11.3%, 13.8%, 16.5%, and 9.2%, crown growth by 3.9%, 3.3%, 8.0% and 8.7%.