造林密度对降香黄檀幼林生长的影响  

The performance of afforestation density on the growth of the young forest of Dalbergia odorifera

作　　者：江廷国[1,2] 黄俊婷 汤行昊 陈刚[3] JIANG Tingguo;HUANG Junting;TANG Xinghao;CHEN Gang(Fujian Academy of Forestry,Fuzhou 350012,Fujian,China;Fujian Provincial Key Laboratory of Forest Silviculture and Forest Product Processing Utilization,Fuzhou 350012,Fujian,China;Natural Resources Service Center of Pingtan Comprehensive Pilot Zone,Pingtan 350400,Fujian,China)

机构地区：[1]福建省林业科学研究院,福建福州350012 [2]福建省森林培育与林产品加工利用重点实验室,福建福州350012 [3]平潭综合实验区自然资源服务中心,福建平潭350400

出　　处：《福建林业》2025年第1期33-36,共4页Fujian Forestry

基　　金：福建省省属公益类科研院所专项(2020R1009006);福建省林业科研项目“降香黄檀良种选育及高效栽培技术研究”共同资助。

摘　　要：为了解降香黄檀造林成效,采用2年生降香黄檀苗木设置4种造林密度进行试验,结果表明:种植密度能显著影响降香黄檀的地径、树高、冠幅生长和造林存活率,种植密度1667株·hm^(-2)的造林成效最好,造林1 a后降香黄檀地径、树高、枝下高、冠幅分别为14.70 mm、134.30 cm、49.78 cm、55.58 cm。降香黄檀生长、存活指标的关系表现为地径与树高、枝下高、冠幅、成活率均呈正相关关系,枝下高与冠幅呈极显著正相关关系,枝下高与存活率呈负相关关系;冠幅与树高呈正相关关系,与存活率呈负相关关系。综合4 a的生长表现,降香黄檀采用1667株·hm^(-2)的密度造林,成效最好。In order to improve the afforestation efficiency of Dalbergia odorifera,experiments were conducted using 2-year-old D.odorifera seedlings with four different planting densities.The results showed that planting density could significantly affect the ground diameter,tree height,crown width growth,and afforestation survival rate of D.odorifera.The treatment group with the best afforestation efficiency had a ground diameter,tree height,sub branch height,and crown width of 14.70 mm,134.30 cm,49.78 cm,and 55.58 cm,respectively,after 1 year of afforestation.The relationship between the growth and survival indicators of D.odorifera is manifested as a positive correlation between ground diameter and tree height,branch height,crown width,and survival rate.Branch height is significantly positively correlated with crown width,while branch height is negatively correlated with survival rate.Crown width is positively correlated with tree height and negatively correlated with survival rate.Based on 4 years of growth performance,afforestation with a density of 1667 plants·hm^(-2)for D.odorifera yielded the best results.

关 键 词：降香黄檀 造林密度 幼林 造林成效 

分 类 号：S725.71[农业科学—林木遗传育种]