山苍子种苗质量分级标准  

Grading standard for Litsea cubeba seedlings

作　　者：肖妮洁 范进顺 邓丽丽 韦霄[2] 史艳财[2] XIAO Ni-jie;FAN Jin-shun;DENG Li-i;WEI Xiao;SHI Yan-cai(College of Tourism and Landscape Architecture,Guilin University of Technology,Guilin 541000,Guangxi,China;Guangxi Institute of Botany,Chinese Academy of Sciences,Guilin 541006,Guangxi,China;Guilin Forestry and Garden Integrated Service Center,Guilin 541100,Guangxi,China)

机构地区：[1]桂林理工大学旅游与风景园林学院,广西桂林541000 [2]中国科学院广西植物研究所,广西桂林541006 [3]桂林市林业和园林综合服务中心,广西桂林541100

出　　处：《湖北农业科学》2024年第7期115-119,128,共6页Hubei Agricultural Sciences

基　　金：国家林业和草原局重点研发项目(GLM[2021]037号);广西植物研究所基本业务费项目(桂植业22005)。

摘　　要：为促进山苍子产业高质量和规范化发展,随机选取50株山苍子[Litsea cubeba(Lour.)Pers.]种苗进行调查,采用相关分析确定苗木分级指标,通过逐步聚类分析法进行修正,计算出山苍子种苗的苗木分级标准。结果表明,以基径和株高作为山苍子种苗的质量分级指标,并得出其分级标准。Ⅰ级种苗:基径≥8.75 mm,株高≥83.8 cm;Ⅱ级种苗:6.28 mm≤基径<8.75 mm,69.6 cm≤株高<83.8 cm;Ⅲ级种苗(不合格苗):基径<6.28 mm,株高<69.6 cm。所抽取的50株山苍子种苗中,Ⅰ、Ⅱ级种苗(合格苗)占28%,Ⅲ级种苗(不合格苗)占72%。In order to promote the high-quality and standardized development production of Litsea cubeba(Lour.)Pers.,50 seedlings were randomly selected for investigation.Correlation analysis was used to determine the grading index of Litsea cubeba(Lour.)Pers.,and the grading standard of Litsea cubeba(Lour.)Pers.seedlings was calculated by gradual clustering analysis.The results showed that plant base diameter and plant height were used as the quality grading indexes of Litsea cubeba(Lour.)Pers.seedlings,and the grading standard was obtained.Grade I seedlings:Plant base diameter≥8.75 mm,plant height≥83.8 cm;Grade II seedlings:6.28 mm≤plant base diameter<8.75 mm,69.6 cm≤plant height<83.8 cm;Grade III seedlings(unqualified seedlings):Plant base diame-ter<6.28 mm,plant height<69.6 cm.Among the 50 Litsea cubeba(Lour.)Pers.seedlings extracted,28%were grade I and II(quali-fied seedlings)and 72%were grade III(unqualified seedlings).

关 键 词：山苍子[Litsea cubeba(Lour.)Pers.] 种苗 分级标准 相关分析 逐步聚类分析法 

分 类 号：S573.8[农业科学—作物学] S723.4