三倍体毛白杨超短轮伐纸浆林生长量与密度关系研究  

Relationship between Growth and Spacing of Intensive Short-rotation Pulpwood Stand of Triploid Chinese White Poplar

作　　者：张平冬[1] 康向阳[1] 赵光荣[2] 孟海军[2] 

机构地区：[1]北京林业大学林木花卉遗传育种教育部重点实验室,北京100083 [2]山东太阳纸业股份有限公司,山东兖州272100

出　　处：《西北林学院学报》2009年第4期121-124,共4页Journal of Northwest Forestry University

基　　金：国家"十一五"科技支撑课题(2006BAD32B01)

摘　　要：以3 a生三倍体毛白杨超短轮伐纸浆林为研究对象,就造林密度对超短轮伐纸浆林胸径、树高以及材积生长量的影响进行了研究,结果表明,三倍体毛白杨胸径生长量随着造林密度的减小而增大,以三倍体毛白杨无性系B331、B307、B302在2 490株.hm-2密度下的胸径生长量最大,平均达到6.7 cm;密度对三倍体毛白杨高生长影响差异不显著,而无性系对三倍体毛白杨高生长影响差异极显著,以B331的树高生长量最大,达到8.9 m;不同密度对三倍体毛白杨超短轮伐纸浆林的材积生长量影响差异极显著,材积生长量随着造林密度的增大而增大,以9 990株.hm-2密度的材积生长量最大,而无性系对三倍体毛白杨超短轮伐纸浆林的材积生长量影响差异显著,其中以无性系B307的材积量最大,达到85.4 m3.hm-2。Effects of spacing on diameter at breast height （DBH）, tree height （TH） and stem volume （SV） of intensive short-rotation pulpwood of triploid Chinese white poplar were examined. The results indicated that DBH increased with spacing decreasing. Triploid clones of B331, B307 and B302 planted with 2 490 trees/hm^2 , gave a higher DBH （6.7 era）. Effect of spacing on TH did not reach significant level. Otherwise there exhisted highly significant differences in tree height of clones, TH of clone B331 was the highest, reaching 8.9 m. Effect of spacing on SV reached highly significant level, and SV increased with spacing increasing. Significant differences existed in effects of clones on SV, planted with 9 990 trees/hm^2 , the SV of clone B307 reached 85.4 m3 · hm^-2.

关 键 词：三倍体毛白杨 纸浆林 密度 生长量 

分 类 号：S757.44[农业科学—森林经理学]