不同立地黑杨派无性系生长和多性状综合评选

以北京大兴区榆垡和青云店2个试验地营建的7个黑杨派无性系6年生试验林为材料，无性系间生长性状（胸径、树高和单株材积）存在极显著差异，且生长性状在无性系×试验地交互效应上亦存在显著差异。利用保存率、生长性状、蓄积量、单位面积碳储量、溃疡病和破腹病及蛀干害虫抗性等性状，以生态林和用材林为选育目标，采用性状权重的综合评分法，分别对2个试验地7个无性系开展多性状综合评价研究。结果表明，在2个试验地上，无论是以生态林还是用材林为选育目标，108杨（Populus ×euramericana cv.‘Guariento’）、107杨（P.×euramericana cv.‘Neva’）、中林2025（P.deltoides cv.‘Zhonglin2025’）和中林46（P.×euramericana cv.‘Zhonglin46’）等4个无性系生长量，各性状表现优良，可在该地区杨树人工林生产中推广。

Growth and Comprehensive Evaluation of Multi-traits for the Selection of 7 Poplar Clones belonging to Section Aigeiros in Different Sites

Seven poplar clones,belonging to section Aigeiros,were studied during the sixth growing seasons of a plantation culture in two sites.Significant differences in growth traits (diameter at breast height,tree height,and individual volume) were observed among the clones and among the interaction effects between clone and site.As the goals of clone selection were ecological and timber plantation,such traits as preservation rate,growth traits,stock volume,carbon reserve,resistance of canker,bark break and boring insect in different sites were respectively used for comprehensive score of clones by different weights of traits.The results showed that four clones (P.×euramericana cv.‘Guariento’,‘Neva’,‘Zhonglin46’ and P.deltoides cv.‘Zhonglin2025’) were selected for whether ecological forest and timber plantation in two sites and suggested for the development of poplar plantation in this area.