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对广西山口林场、钦廉林场天堂分场及钦州市犀牛脚镇等3个地点20个以尾叶桉为主参试无性系6、12、18、42个月生的生长性状进行分析与遗传测定.结果表明:参试的20个无性系生长性状在无性系、地点和无性系×地点交互效应上均存在极显著差异;42个月生参试的20个无性系在不同试验地点平均生长量表现为:钦廉林场天堂分场>山口林场>钦州市犀牛脚镇,性状综合分析及评定表明12、15、18号等3个尾叶桉无性系适应性广,具速生丰产性,可推广利用;3个试点选择12、15、18号3个普适型无性系时,其单株材积遗传增益可达35.32%-47.57%.
Analysis and genetic analysis of growth traits of 20 tested progenies of Eucalyptus urophylla at 6, 12, 18 and 42 months in three sites including Shankou Forest Farm in Qinling Mountains, Paradise Branch in Qinlian Forest Farm and Pinhao Township in Qinzhou City The results showed that there were extremely significant differences in the reciprocal effects of the clonal growth traits of the 20 clones tested on clones, sites and clones × sites; 20 clones on the 42-month-old trial grew at different test sites The results are as follows: Qinlin Forest Farm Paradise Branch> Shankou Forest Farm> Rhinoceros Foothill in Qinzhou City. Comprehensive analysis and evaluation of the traits indicated that three Eucalyptus urophylla clones such as 12,15,18 had wide adaptability and high yield, The results showed that the genetic gain of single plant was 35.32% -47.57%.