永安市巨桉种源/家系引种试验

The introduction tests of provenances and families of Eucalyptus grandis

对福建省永安国有林场1997年引种的巨桉6个种源100个家系试验林进行连续8 a的试验观测,结果表明:不同种源、家系间的耐寒性和生长量存在显著或极显著差异。应用主成分综合评分排序法选出优良家系12个,其树高、胸径、单株材积和耐寒指数平均值分别为15.7 m、17.3 cm、0.1752 m3和4.40,增益分别为18.2%、19.6%、61.7%和18.4%;选出优良个体20株,其树高、胸径、单株材积和耐寒指数平均值分别为18.5 m、21.2 cm、0.2863 m3和4.85,增益分别为39.4%、46.3%、164.2%和41.3%。

The 8-year consecutive observation was conducted on the 100 families of 6 provenances of Eucalyptus grandis introduced in Yong＇ an Forest Farm in 1997. The result indicated that there were significant difference or great significant difference among different provenances and families in cold tolerance and growth increment. The 12 of excellent families were selected by the principle component integrated assessing sequence method. Their tree height, DBH, individual volume and average cold tolerant value were 15.7 m, 17.3 cm, 0. 1752 m^3 and 4.40, respectively, and their corresponding genetic gain were 18.2 %, 19.6 %, 61.7 % and 18.4 %, respectively. The 20 individuals were selected as the elite trees which tree height, DBH, individual volume and average cold tolerant value were 18.5 m,21.2 cm,0. 2863 m^3 and 4.85, respectively, and which corresponding genetic gain were 39.4%, 46.3%, 164.2% and41.3%, respectively.