不同来源尾巨桉苗木造林生长的比较研究  

Comparative Study on Afforestation Growth of Eucalyptus urophylla×E.grandis Seedlings from Different Sources

作　　者：许峻模 温远光 黄勇杰 陈金磊 陈秋海 温俊 吴衍霖 林建 周晓果 XU Junmo;WEN Yuanguang;HUANG Yongjie;CHEN Jinlei;CHEN Qiuhai;WEN Jun;WU Yanlin;LIN Jian;ZHOU Xiaoguo(Institute of Eco Environment Research,Guangxi Academy of Sciences,Nanning,Guangxi,530007,China;Institute of Ecological Industry,Guangxi Academy of Sciences,Nanning,Guangxi,530007,China;College of Forestry,Guangxi University,Nanning,Guangxi,530004,China;Nanning Arboretum of Guangxi Zhuang Autonomous Region,Nanning,Guangxi,530031,China)

机构地区：[1]广西科学院生态环境研究所,广西南宁530007 [2]广西科学院生态产业研究院,广西南宁530007 [3]广西大学林学院,广西南宁530004 [4]广西壮族自治区南宁树木园,广西南宁530031

出　　处：《广西科学院学报》2024年第2期154-161,共8页Journal of Guangxi Academy of Sciences

基　　金：广西自然科学基金项目(2023GXNSFBA026328,2023GXNSFAA026415);国家自然科学基金项目(32160358,32360284)资助。

摘　　要：为明确不同来源良种尾巨桉(Eucalyptus urophylla×E.grandis)无性系DH32-29苗木造林后幼龄阶段(1-3 a)的生长差异,为优质苗木的选择和提质增产增效提供理论依据,本研究以来源清楚的尾巨桉无性系DH32-29苗木(BG)和来源不清的尾巨桉无性系DH32-29苗木(NBG)造林林分为研究对象,比较研究广西西北部、中部及南部3个区域不同苗木造林林分的胸径、树高、生物量、碳储量及生产力的差异性。结果表明:林龄为2、3 a时,尾巨桉BG林分的平均胸径、单株生物量、单株碳储量及单株生产力均显著高于NBG林分(P<0.05);BG林分乔木层生物量、碳储量及生产力整体高于NBG林分,在林龄为1 a时差异较小,林龄为2 a生时差异增大,但未达显著水平(P>0.05),林龄为3 a生时差异达极显著水平(P<0.01)。因此,采用来源清楚的优质苗木造林增产效果更明显。In order to clarify the growth difference of Eucalyptus urophylla×E.grandis clone DH3229 seedlings from different sources at the young stage(1-3 years old)after afforestation,and provide scientific theoretical basis for the selection of high quality seedlings and the improvement of quality,yield and efficiency,the E.urophylla×E.grandis clone DH3229 seedlings(BG)and the E.urophylla×E.grandis clone DH3229 seedlings(NBG)were used as the research objects.The differences of DBH,tree height,biomass,carbon storage and productivity of different seedling afforestation stands in three regions of northwest,central and southern Guangxi were compared.The results showed that at the age of 2 and 3 years,the average DBH,biomass per plant,carbon storage per plant and productivity per plant of E.urophylla×E.grandis in BG stand were significantly higher than those of NBG stand(P<0.05).The biomass,carbon storage and productivity of arbor tree layer of BG stand were higher than those of NBG stand.The difference was small at 1 year old,and the difference increased at 2 years old,but it did not reach a significant level(P>0.05).The difference at 3 years old reached a very significant level(P<0.01).The effect of increasing yield by afforestation with high quality seedlings from clear sources is more obvious.

关 键 词：尾巨桉 幼龄林 优质种苗 胸径 生产力 

分 类 号：S722.5[农业科学—林木遗传育种]