火力楠轻基质容器苗分级标准研究  

Classification of Container Seedlings Growing with Light Media for Michelia macclurei Dandy

作　　者：黎明[1] 吴方成 施日洲 LI Ming;WU Fang-cheng;SHI Ri-zhou(Experimental Centre of Tropical Forestry,Chinese Academy of Forestry,Pingxiang,Guangxi 532600)

机构地区：[1]中国林业科学研究院热带林业实验中心

出　　处：《安徽农业科学》2019年第17期108-110,共3页Journal of Anhui Agricultural Sciences

摘　　要：[目的]制定火力楠轻基质容器苗的出圃标准,为营建高效火力楠人工林奠定基础。[方法]利用轻基质培育火力楠实生苗,于6个月时测定其苗高、地径、根体积、地上(地下)部分干质量,计算单株干质量和根冠比。应用主成分分析确定火力楠轻基质苗的分级质量指标,采用逐步聚类分析研究其分级标准。[结果]火力楠苗木可分为3级,Ⅰ级苗:H≥59.2cm、D≥6.03mm,Ⅱ级苗:59.2cm>H≥45.4cm、6.03mm>D≥4.82mm,Ⅲ级苗:H<45.4cm、D<4.82mm。[结论]该研究可为火力楠轻基质苗木分级提供参考依据。[Objective]To develop the standards of light media container seedlings for Michelia macclurei and lay a foundation for the construction of efficient plantation.[Method]Taking M.macclurei seedlings in containers with light media as materials,seedling height,ground diameter,root volume,aboveground dry mass and underground dry mass were measured when the seedlings were half-year were calculated.Then dry mass of whole plant and root-shoot ratio were calculated.Principal component analysis was used to determine the grading quality index of light media seedlings for M.macclurei,and gradual cluster analysis was used to study its grading standard.[Result]The seedlings could be divided into 3 grades,gradeⅠ:H≥59.2 cm and D≥6.03 mm,gradeⅡ59.2 cm>H≥45.4 cm and 6.03 mm>D≥4.82 mm,gradeⅢ:H<45.4 cm,D<4.82 mm.[Conclusion]The study can provide reference for light media seedling grading of M.macclurei.

关 键 词：火力楠 轻基质容器苗 苗木分级 主成分分析 逐步聚类分析 

分 类 号：S723.4[农业科学—林木遗传育种]