摘要
以秀丽香港四照花1年生容器苗为样本,以地径、苗高作为苗木质量分级标准,结合实际生产情况,采用逐步聚类分级法将样本苗木分为4个等级。Ⅰ级苗(特级苗)地径≥0.52 cm、苗高≥54.3 cm,Ⅱ级苗(优质合格苗)地径≥0.44 cm、苗高≥44.0 cm,Ⅲ级苗(普通合格苗)地径≥0.36 cm、苗高≥38.0 cm,Ⅳ级苗(劣质苗)地径<0.36 cm、苗高<38.0 cm。
Taking the annual container seedling of Cornus hongkongensis Hemsl.ssp.elegans as samples,the ground diameter and height as seedling quality grading standards,and the gradual cluster analysis as method,the container seedling of samples were divided into four grades.The critical value was：Grade Ⅰ（the highest quality seedling） with the ground diameter ≥0.52 cm and height≥54.3 cm;Grade Ⅱ（the high quality seedling） with the ground diameter ≥0.44 cm and height ≥44.0 cm;Grade Ⅲ（the common qualified seedling） with the ground diameter ≥0.36 cm and height ≥38.0 cm;Grade Ⅳ（the poor quality seedling） with the ground diameter 〈0.36 cm and height 〈38.0 cm.
作者
肖纪军
何必庭
徐肇友
陈焕伟
李军
XIAO Jijun;HE Biting;XU Zhaoyou;CHEN HuanweiI;LI Jun(Longquan Forestry Institute ,Longquan 323700 ,Zhejiang, China;Linhai Forest Germchit Management Station ,Linhai 317000 ,Zhejiang , China)
出处
《福建林业科技》
2017年第4期102-106,共5页
Journal of Fujian Forestry Science and Technology
基金
浙江省林业科研成果推广项目(龙泉市珍贵乡土树种种质资源收集和繁育推广
2013B39)
浙江省2015年度林业发展和资源保护专项资金项目(四照花等树种种质资源收集与繁育
龙林[2015]109号)
关键词
秀丽香港四照花
容器苗
质量分级
Comus hongkongensis Hemsl. ssp. elegans
container seedling
quality grading
