5种阔叶树穴盘苗分级标准研究  

Study on Grading Standards of Plug Seedling for Five Broad-leaved Species

作　　者：赵育鹏 李新平[1] 马佳琳[1] 郭斌[1] ZHAO Yu-peng;LI Xin-ping;MA Jia-lin;GUO Bin(Shanxi Academy of Forestry,Taiyuan,Shanxi 030012,China)

机构地区：[1]山西省林业科学研究院,山西太原030012

出　　处：《河北林业科技》2019年第3期8-12,共5页Journal of Hebei Forestry Science and Technology

基　　金：主要珍贵阔叶树苗木培育及造林区域化试验(原山西省林业厅科技攻关项目)。

摘　　要：为探讨阔叶树穴盘苗质量分级标准。以4个月苗龄的五角枫、杜梨、黄菠萝、水曲柳、皂荚穴盘苗为试验材料,选择苗高和地径作为苗木分级指标,采用逐步聚类分析方法对其分级标准进行初步探讨。经过分析计算,将各树种穴盘苗分为3级,初步得出各苗木等级的划分标准。分别为五角枫Ⅰ级苗H≥41.0、D≥0.47,Ⅱ级苗32.7≤H<41.0、0.44≤D<0.47,Ⅲ级苗H<32.7、D<0.44;杜梨Ⅰ级苗H≥41.1、D≥0.57,Ⅱ级苗35.3≤H<41.1、0.51≤D<0.57,Ⅲ级苗H<35.3、D<0.51;黄菠萝Ⅰ级苗H≥22.7、D≥0.44,Ⅱ级苗14.3≤H<22.7、0.37≤D<0.44,Ⅲ级苗H<14.3、D<0.37;水曲柳Ⅰ级苗H≥27.2、D≥0.51,Ⅱ级苗21.9≤H<27.2、0.43≤D<0.51,Ⅲ级苗H<21.9、D<0.43;皂荚Ⅰ级苗H≥26.5、D≥0.48,Ⅱ级苗22.8≤H<26.5、0.42≤D<0.48,Ⅲ级苗H<22.8、D<0.42。To explore the grading standard of plug seedling for broad-leaved species.Choosing the seeding height and basal diameter as the grading index,we studied the grading standard of 4-month-old plug seedlings of Acer mono、Pyrus betulaefolia、Phellodendron amurense、Fraxinus mandshurica and Gleditsia sinensis by using the method of gradual cluster analysis.After analysis and calculation,we concluded the grading standard.In this study,We studied the grading standards of plug seedling for broad-leaved Species in order to provide reference for making standard and establish the foundation for breeding,forestation and industrial sustainable development.

关 键 词：阔叶树 穴盘苗 苗木分级 逐步聚类分析 

分 类 号：S723.4[农业科学—林木遗传育种]