初植密度对不同杉木良种幼林生长的影响  

Effect of initial planting density on the growth status of different improved varieties of Cunninghamia lanceolata forests

作　　者：连雲虹 LIAN Yunhong(Shuinan National Forest Farm of Shaxian,Shaxian 365050,Fujian,China)

机构地区：[1]福建省沙县水南国有林场,福建沙县365050

出　　处：《福建林业》2024年第4期30-33,共4页Fujian Forestry

摘　　要：对不同初植密度下3年生杉木良种的树高、地径、单株材积等生长性状进行调查与分析,筛选适宜种植的杉木初植密度。结果表明:(1)良种对树高存在显著影响,密度对地径、单株材积存在显著影响。良种与密度的交互作用对杉木树高、地径、单株材积均存在显著影响。(2)普通杉木、尤溪3代在低初植密度(2500株·hm^(-2))下,林分生长状况较好,且尤溪3代优于普通杉木;官庄红心杉在高初植密度(3300株·hm^(-2))下,林分生长状况较好。The growth characteristics such as tree height,ground diameter,and individual volume of 3-year-old Cunninghamia lanceolata varieties under different initial planting densities were investigated and analyzed,and the suitable initial planting densities for C.lanceolata were selected.The results showed that:(1)Improved varieties had a significant impact on tree height,and density had a significant impact on ground diameter and individual volume.The interaction between improved varieties and density has significant effects on tree height,ground diameter and individual volume of C.lanceolata.(2)The growth conditions of C.lanceolata and Youxi 3rd generation were better under low initial planting density(2500 plants·hm^(-2)),and Youxi 3rd generation was better than C.lanceolata.The growth condition of red-colored heartwood of Guanzhuang was better under high initial planting density(3300 plants·hm^(-2)).

关 键 词：杉木 苗木栽培 树高 地径 单株材积 

分 类 号：S791.27[农业科学—林木遗传育种]