黄枝油杉种苗质量分级标准研究
Quality Grading Standard of Seedlings of Keteleeria davidiana var.calcarea(W.C.Cheng&L.K.Fu)Silba
顾春姣 1陈泰国 2杨一山 2孙菲菲 2邹蓉 2唐健民 3柴胜丰2
作者信息
- 1. 广西壮族自治区中国科学院广西植物研究所,广西 桂林 541006;上海中医药大学 附属龙华医院,上海 200032
- 2. 广西壮族自治区中国科学院广西植物研究所,广西 桂林 541006
- 3. 广西壮族自治区中国科学院广西植物研究所,广西 桂林 541006;鹿儿岛大学 大学院联合农学研究科,日本 鹿儿岛 〒890-0065
- 折叠
摘要
黄枝油杉由于其分布区狭窄,繁殖速度慢,资源少,是国家二级保护植物.为了更好地保护其种质资源,通过实验研究种苗质量分级标准.分别对 2 年生和 4 年生的黄枝油杉种苗性状特征描述,以地径和株高作为主要分级标准代表,运用Excel 2003 和SPSS 26.0 对种苗特征数据进行统计学相关分析、主成分分析、K均值聚类分析,将其种苗分别 2 年生和 4 年生分别分成了三级.2 年生一级株高>20 cm,冠幅>11 cm,地径≥0.10 cm;4 年生一级株高>127 cm,冠幅>56 cm,地径≥0.80 cm.2 年生二级株高14～20 cm,冠幅 8～11 cm,地径≥0.10 cm;4 年生二级株高 96～127 cm,冠幅38～56 cm,地径≥0.80 cm;2 年生三级株高<14 cm,冠幅<8 cm,地径≥0.10 cm;4 年生三级株高<96 cm,冠幅<38 cm,地径≥0.80 cm.
Abstract
Keteleeria davidiana var.calcarea(W.C.Cheng&L.K.Fu)Silba is a national second level protected plants due to its narrow distribution area,slow reproduction rate and few resources.In or-der to better conserve the germplasm resources,the quality grading standard of seedlings of Keteleeria da-vidiana var.calcarea(W.C.Cheng&L.K.Fu)Silba were experimentally studied.The 2-year-old and 4-year-old seedlings with diameter and height as the main grading standard were subjected to statisti-cal correlation analysis,principal component analysis,and K-means cluster analysis using Excel 2003 and SPSS 26.0 to develop a reasonable grading standard for seedlings.The seedlings were divided into three levels at different ages.2-year-old seedlings:primary plant height was>20 cm,crown width was>11 cm,and ground diameter was≥0.10 cm;4-year old seedlings:primary plant height was>127 cm,crown width was>56 cm,and ground diameter was≥0.80 cm.2-year-old seedlings:secondary plant height was 14-20 cm,crown width was 8-11 cm,and ground diameter was≥0.10 cm;4-year old seedlings:secondary plant height was 96-127 cm,crown width was 38-56 cm,ground diameter was≥0.80 cm;2-year old seed-lings:tertiary plant height was<14 cm,crown width was<8 cm,ground diameter was≥0.10 cm;4-year old seedlings:tertiary plant height was<96 cm,crown width was<38 cm,ground diameter was≥0.80 cm.
关键词
黄枝油杉/种苗质量分级/相关性分析/K均值聚类分析Key words
Keteleeria davidiana var.calcarea(W.C.Cheng&L.K.Fu)Silba/quality grading of seedlings/correlation analysis/K-means cluster analysis引用本文复制引用
基金项目
广西林业科技推广示范项目([2022]GT23)
国家自然科学基金(22180155466)
财政部科技专项(52544788)
广西自然科学基金(2014GX233658)
广西科学院创新团队启动项目(CQZ-C-1902)
出版年
2024
NETL
NSTL
维普
万方数据