不同坡位和造林密度对四种桉树生长的影响  

Influences of Different Slope Positions and Afforestation Density on Growth of Four Eucalyptus

作　　者：陈振华 张明慧 侯敏 李海星 文盛兰[2] 杨振德[2] 常明山[3] 

机构地区：[1]广西国有派阳山林场,广西宁明532504 [2]广西大学林学院,南宁530004 [3]广西壮族自治区林业科学研究院森林保护研究所,南宁530002

出　　处：《湖北农业科学》2014年第3期597-600,共4页Hubei Agricultural Sciences

摘　　要：对DH32-26(D26)、DH32-28(D28)、DH32-29(D29)、GL-UG9(G9)4个桉树(Eucalyptus)无性系在不同坡位、不同造林密度下的树高和胸径进行试验,探求不同坡位和不同造林密度对4个桉树无性系生长的影响。结果表明,相同坡位条件下,桉树不同无性系的树高和胸径差异不大,不同造林密度对桉树树高以及上坡位桉树的胸径影响较大;相同造林密度条件下,不同无性系的树高和胸径差异不显著,在2.0m×3.0 m的造林密度下,不同坡位的树高和胸径差异显著(P<0.05);同一无性系DH32-28及DH32-29在不同造林密度下树高差异显著(P<0.05),胸径差异不显著,不同坡位树高和胸径差异不显著;不同造林密度和不同坡位对DH32-26、GL-UG9无性系的树高和胸径都无显著影响。Taking four Eucalyptus clones DH32-26（D26）, DH32-28（D28）, DH32-29（D29） and GL-UG9（G9） as materials, the experiment was carried out to investigate the effects of different slope psitions and afforestation density on growth of four Eucalyptus. Results show that under the same slope positions, there were no differences between tree height and diameter at breast of four Eucalyptus, and big difference on the tree height and diameter at breast of upper slope under different afforestation density; Under the same afforestation density, there were no differences between tree height and diameter at breast of four Eucalyptus; in 2.0×3.0 m afforestation density, there were differences between tree height and diameter at breas（P 0.05）; There were significant differences between tree height of same clone DH32-28 and DH32-29 under the different afforestation（P0.05）, and no differences on diameter at breast height, and a different slope of tree height and diameter at breast height difference was not significant; Different afforestation density and different slope of DH32-26, GL-UG9 clones of tree height and diameter at breast height had no significant difference.

关 键 词：桉树(Eucalyptus)无性系 坡位 造林密度 树高 胸径 

分 类 号：S718.43[农业科学—林学] S792.39