浙江楠1年生容器苗质量分级研究  

Study on the Quality Classification Criteria of Phoebe chekiangensisAnnual Container Seedling

作　　者：高大雄 杨姝琦 荀继刚 兰竹 刘德彪 李振芳[2,3] Gao Daxiong;Yang Shuqi;Xun Jigang;Lan Zhu;Liu Debiao;Li Zhenfang(Hubei Provincial Taizi Mountain Forest Farm Management Bureau,Jingshan 431819;Hubei Academy of Forestry Sciences,Wuhan 430075;Hubei Province Fast Growing and High Yield Forest Engineering Technology Research Center,Wuhan 430075)

机构地区：[1]湖北省太子山林场管理局,京山431819 [2]湖北省林业科学研究院,武汉430075 [3]湖北省速生丰产林工程技术研究中心,武汉430075

出　　处：《湖北林业科技》2024年第2期1-4,共4页Hubei Forestry Science and Technology

基　　金：湖北省林业科技支撑重点项目“楠木珍贵用材高效培育技术研究”([2022]LYKJ11)。

摘　　要：本研究以浙江楠容器苗为试验材料,采用地径和苗高作为分级指标,应用平均值±标准差法和逐步聚类法开展了1 a生实生苗的苗木质量分级研究,发现标准差法计算的Ⅰ级苗下限值偏高,逐步聚类法计算的Ⅱ级苗下限值偏高;综合确定浙江楠1 a生容器苗质量分级标准:Ⅰ级苗地径0.24 cm以上,苗高13.0 cm以上;Ⅱ级苗地径在0.15~0.24 cm之间,苗高在8.0~13.0 cm之间;Ⅰ、Ⅱ级苗为合格苗,确定的合格苗木接近85%的控制率。In this study,the container seedlings of Phoebe chekiangensis were used as experimental materials.The Ground diameter and seedling height were used as grading indexes,and the mean±standard deviation method and stepwise clustering method were used to carry out the research on the quality classification of annual seedlings.Found that the standard deviation method to calculate the grade I seedlings under the limit on the high side,stepwise clustering method to calculate gradeⅡseedling lower limit on the high side.The quality classification criteria of annual container seedling of Phoebe chekiangensis were determined comprehensively:the diameter of seedling field was above 0.24 cm,and the height of seedling was above 13.0 cm.The seedling diameter of grade II ranged from 0.15 cm to 0.24 cm,and the seedling height ranged from 8.0 cm to 13.0 cm.Grade I and II seedlings were qualified seedlings,and the control rate of qualified seedlings was close to 85%.

关 键 词：浙江楠 容器苗 分级标准 平均值±标准差法 逐步聚类 

分 类 号：S723.133[农业科学—林木遗传育种]