两面针苗木分级标准的研究  

Study on Seedlings Classification Standard of Zanthoxylum nitidum (Roxb.) DC

作　　者：蒋水元[1] 李虹[1] 黄夕洋[1] 孙世荣[2] 

机构地区：[1]中国科学院广西植物研究所,广西桂林541006 [2]柳州两面针股份有限公司,广西柳州545001

出　　处：《福建林业科技》2010年第4期87-90,共4页Journal of Fujian Forestry Science and Technology

基　　金：广西科学院科技创新项目(桂科院研0705)

摘　　要：运用随机抽样、主成分分析和逐步聚类分析等方法,对两面针当年生苗和1年生苗的分级标准进行调查研究。结果表明,地径和苗高对两面针苗木质量有很好的表达,可以作为苗木分级的质量指标;按照3个等级,提出了两面针当年生苗和1年生苗相应的分级标准;经实测该分级标准与苗木实际情况相符,可为生产提供参考。The classification standard of current-year-old and 1-year-old seedlings of Zanthoxylum nitidum（Roxb.） DC was studied by random sampling,main factor analysis and the clustering gradually analysis.The results showed that the ground diameter（D） and the nursery height（H） could be regarded as the indexes of the seedlings quality grading of Zanthoxylum nitidum（Roxb.） DC. According to three grades,the relative classification criteria of current-year-old and 1-year-old seedlings of Zanthoxylum nitidum（Roxb.） DC was put forward.The results of the classification criteria were coincided with the practical growth of seedlings,and they were expected to provide reference for production.

关 键 词：两面针 苗木分级 主成分分析 聚类分析 

分 类 号：S723.11[农业科学—林木遗传育种]