不同桉树品系在闽北地区造林成效研究  

Study on Afforestation Effects of Eucalyptus species in Northern Fujian Province

作　　者：马丽珍[1] 

机构地区：[1]建瓯市林业技术推广中心,福建建瓯353100

出　　处：《桉树科技》2016年第1期12-16,共5页Eucalypt Science & Technology

基　　金：福建省林木种苗科技攻关二;三期"桉树良种选育与扩繁应用"项目(fjlmzmgg2006-4;fjlmzmgg2009-4)

摘　　要：桉树作为三大人工造林速生树种之一,在缓解用材压力上具有十分重要的作用。通过对设置在建瓯市的8年生7个桉树品系试验林进行全面生长调查,方差分析和显著性检验结果显示,各品系的胸径、树高和材积在重复间差异不显著,而不同品系间的差异达到极显著水平。总体上,属于组培苗系列的Wc3、Dz7和Dz6在胸径、树高和材积量上表现均较好,极显著高于其他品系,3个品系中又以Wc3最佳,分别为14.59 cm、15.76 m、0.1360 m3、28.333 3 m3·hm^(-2)·a^(-1)。与对照品系Ds(邓恩桉实生苗)相比,分别高出了21.98%、21.67%、51.28%和51.28%,且个体分化较小。基于8年生桉树品系试验林测定结果,Wc3、Dz7和Dz6桉树品系可作为闽中北部海拔300 m以下丘陵地桉树种植材料,而从个体差异分化极大的Dst群体中筛选优良单株进行无性扩繁后造林,也是一个不错的选择。Eucalyptus as one of the three fast-growing forest plantation species and it has an important role in mitigating pressures of wood supply from domestic timber markets. This paper focuses on the breast height diameter, tree height and timber volume condition of 8 years old stands of Eucalyptus species/varieties in Jianou County of Fujian. Analyses of variance analysis showed that all growth indices assessed had highly significant differences among strains/varieties, but no significant differences among stands of the one strain/variety. Generally speaking, the clonal varieties Wc3, Dz7 and Dz6 all performed well, especially clone Wc3. For this latter clone, average breast height diameter, tree height, timber volume and annual growth were 14.6 cm, 15.8 m, 0.136 m3 and 28.33 m3·hm^（-2）·a^（-1） respectively, higher than the control strain Ds（seedlings of E. dunnii） by about 22.0%, 21.7%, 51.3% and 51.3% respectively, and trees of clone Wc3 showed high uniformity with relatively little between tree variation. Clones Wc3, Dz7 and Dz6 all proved to be good clones for plantation establishment in Northern Fujian province, with clone Wc3 being the single best clone overall. Even so, selection of plus-trees from Ds should be pursued in order to develop new superior clones for future clonal forestry.

关 键 词：桉树品系 闽北 造林成效 材积 

分 类 号：S725.1[农业科学—林木遗传育种]