[Objective]In order to reveal the relationship between leaf traits and yield of different Eucalyptus stands,and to provide a basis for the breeding of improved varieties and the selection of excellent seedlings for afforestation.[Method]Taking the stand(BG)of E.urophylla×E.grandis DH32-29 seedlings cultivated by Guangxi Bagui Seedling High-tech Group Co.,LTD and the stand(NBG)of E.urophylla×E.grandis DH32-29 seedlings cultivated by other production units as the objects,the typical plots were set up.To carry out stand investigation and comparative study on the relationship between leaf traits and yield.[Result]The results showed that the leaf area,leaf perimeter,leaf length and leaf width of BG stands were higher than those of NBG stands in 5 regions.There were significant differences in leaf area,leaf per-imeter and leaf length between BG and NBG stands in Tian'e,Guiping,Xiangzhou and Youjiang.There were significant differences in leaf width and leaf length-to-width ratio between BG and NBG stands in 5 regions(P＜0.05).Under the same age,the individual tree volume of BG stands in Tian'e,Guiping,Xiangzhou and Hengzhou was significantly higher than that of NBG stands(P＜0.05).In Guiping,Xiangzhou and Hengzhou,BG stand volume and average annual volume growth were higher than NBG stands.There was a close correlation between leaf traits and annual average volume growth,but there were differences among different leaf traits.[Conclusion]These results indicated that the leaf traits and annual average volume growth of BG stand are superior to NBG stand,which can effectively improve the photosynthetic produc-tion capacity per unit area and thus increase the stand volume.
关键词
不同苗木/桉树人工林/叶片性状/年均蓄积生长量
Key words
Different seeding/Eucalyptus plantation/Leaf traits/Annual average volume growth
维普
万方数据