邓恩桉种源林分生长特性与聚类分析  

Growth Characteristics and Cluster Analysis of Eucalyptus dunnii

作　　者：梁丽虹[1] 蓝克佩 尹明善[1] 黄晓露[2,3,4] 陈健波[2,3,4] 

机构地区：[1]广西壮族自治区环江毛南族自治县华山林场,广西环江547100 [2]广西壮族自治区林业科学研究院,广西南宁530002 [3]国家林业局中南速生材繁育实验室,广西南宁530002 [4]广西优良用材林资源培育重点实验室,广西南宁530002

出　　处：《安徽农业科学》2016年第27期153-156,共4页Journal of Anhui Agricultural Sciences

基　　金：中央财政林业科技推广示范资金项目[(2015)TG18号];广西林业科技项目[桂林科字(2016)第16号]

摘　　要：[目的]筛选适宜华山林场种植的优良种源，为邓恩桉良种选育提供基础依据。[方法]连续5年对华山林场10个邓恩桉种源的保存率和生长性状进行观测和分析。[结果]随林龄增加，种源平均保存率和平均胸径的增加幅度呈下降趋势，平均树高、平均单株材积的增长幅度呈上升趋势；受2013年风雪灾害影响，种源平均保存率在2．5～3．5年间下降幅度最大；4．5年时保存率和胸径最高为D9509，树高和单株材积最大为D9508。[结论]10个种源的分类和分级表明，种源D9508、D9509保存率高，生长性状较好。[Objective] To screen the superior provenance planted in Huashan Forest Farm, and to provide basis for selective breeding of Eu-calyptus dunnii.[ Method] Preservation rates and growth characteristics of ten provenances of E.dunnii in Huashan Forest Farm were ob-served and analyzed for continuous five years.[ Result] With the increase of forest age, the average survival rate of provenance and the in-crease of average diameter at breast height showed a downward trend.Growth ranges of average plant height and average individual volume were on the rise.The average preservation rate of provenance showed the biggest drop in 2.5-3.5 years because of the snow disaster in 2013. At the stand age of 4.5, D9509 showed the best preservation rate and average diameter at breast height; D9508 showed the best plant height and individual volume.[ Conclusion] Classification of ten provenances shows that D9508 and D9509 have relatively high preservation rate and good growth trait.

关 键 词：邓恩桉 生长特性 聚类分析 

分 类 号：S722.3[农业科学—林木遗传育种]