对广西3地点20个以尾叶桉为主要亲本的桉树无性系进行6、12、18个月生的性状分析与遗传测定。结果表明,生长性状在无性系、地点和无性系×地点交互效应上均存在极显著差异,试验可选择出生长优良的无性系;不同地点生长量表现为:山口>天堂>犀牛脚;18个月生时性状综合分析和评定表明,12、17、18号无性系适应性广,具速生丰产性,可试行推广利用,而2、3、5、6号无性系丰产性和稳定性差,缺少利用价值。 The traits and genetic determinations of 20, 12, 12 month old eucalyptus clones of 20 Eucalyptus urophylla with the main parents of Eucalyptus urophylla were collected from 3 locations in Guangxi. The results showed that there were significant differences in growth traits between clonal, locus and clonal × locus interactions, and the clones with good growth were selected in this experiment. The growth in different locations showed as follows: mountain pass> paradise> rhinoceros feet and 18 The analysis and assessment of the characteristics at the lunar cycle showed that clones 12, 17 and 18 had wide adaptability, fast-growing and high-yielding, and could be popularized at trial. However, the yield and stability of the clones No. 2,3,5,6 were poor and lacking Use value.