不同修枝强度对托里桉幼林生长的影响  

Growth Response of Young Corymbia torelliana Plantation to Different Pruning Intensities

作　　者：刘球[1,2] 李志辉[1] 陈少雄[2] 

机构地区：[1]中南林业科技大学,湖南长沙410004 [2]国家林业局桉树研究开发中心,广东湛江524022

出　　处：《桉树科技》2010年第1期32-36,共5页Eucalypt Science & Technology

基　　金：国家"十一五"科技支撑课题"桉树和相思速生丰产林培育关键技术研究与示范"(2006BAD24B02)和"高产优质桉树速生材树种新品种选育"(2006BAD01A1504)

摘　　要：对3年生托里桉进行修枝试验,修枝强度为修去4种树干直径5cm,6cm,7cm和8cm以下所有枝条.修枝7个月后对试验地进行测量并分析,结果表明:修枝木的树高、胸径、冠幅以及单株材积均随着修枝强度的增大而相应变小。适当修枝有利于托里桉幼林的生长,建议采用8cm强度进行修枝。A field trial of pruning in 3 years old Corymbia torelliana was established. The trial design included 4 pruning intensities,which were pruning all branches up to stem diameters of 5.0 cm,6.0 cm,7.0 cm and 8.0 cm. The results at 7 months after pruning showed that heavier pruning intensities resulted in lower height,DBH,crown area and individual tree volume increments . Growth of young Corymbia torelliana plantations could benefit from a proper pruning intensity with pruning of all branches up to a stem diameter of 8.0 cm being optimal.

关 键 词：修枝 修枝强度 生长 

分 类 号：S753.518[农业科学—森林经理学]