金佛山方竹2个种源1年生实生苗生长的比较研究
Comparative Study on the Growth of 1-Year Seedlings from Two Provenances of Chimonobambusa utilis
方水元 1凡美玲 1张勤 1徐若琪 1刘凡巧 1丁雨龙 2林树燕2
作者信息
- 1. 贵州省桐梓县林业局,贵州 桐梓 563200
- 2. 南京林业大学 南方现代林业协同创新中心/竹类研究所,江苏 南京 210037
- 折叠
摘要
[目的]为提高造林存活率,减小造林成本,通过对比金佛山方竹(Chimonobambusa utilis)2 个种源实生苗生长差异,选择优良的实生苗上山造林.[方法]该研究选择贵州省桐梓县箐坝、黄莲2 个种源的种子进行育苗,对金佛山方竹2 个种源 1 年生实生苗的生长进行比较研究.[结果]2 个种源 1 年生实生苗各指标随时间呈正比例上升,由于气温影响,各生长指标在冬季生长量均较小,箐坝种源实生苗最大株高和地径2 个指标均优于黄莲种源实生苗,但分蘖数和叶片数 2 个指标表现为黄莲种源优于箐坝种源实生苗.[结论]通过聚类分析,选择最大株高、地径和分蘖数3 个指标作为 1 年生方竹实生苗对比指标,将实生苗划分为4 个等级,Ⅰ级(优)、Ⅱ级(良)、Ⅲ级(中)和Ⅳ级(差),以期为方竹的育苗及引种推广提供理论依据.
Abstract
[Objective]In order to improve the survival rate and reduce the cost of afforestation,by comparing the growth difference of the seedlings from two provenances of Chimonobambusa utilis,and the excellent seedlings were selected for afforestation in the mountains.[Method]In this study,the seeds of Qingba and Huanglian from Tongzi County of Guizhou Province were selected for seedling cultivation,and the growth of annual seedlings from the two provenances of Ch.utilis was compared.[Result]The results showed that each index of annual seedlings from two provenances increased with time in a positive proportion,and the growth of each index was small in winter due to the influence of air temperature,the maximum plant height and ground diameter of annual seedlings from Qingba provenance were better than those from Huanglian provenance,but the number of tillers and number of leaves from Huanglian provenance were better than those from Qingba provenance.[Conclusion]Through cluster analysis,three indexes of maximum plant height,ground diameter and number of tillers from annual seedlings of Ch.utilis were selected as the comparison indexes,and the seedlings were divided into four grades,grade Ⅰ(excellent),grade Ⅱ(good),grade Ⅲ(medium)and grade Ⅳ(poor),which was expected to provide theoretical basis for the cultivation and introduction.
关键词
金佛山方竹/实生苗/比较研究Key words
Chimonobambusa utilis/Seedlings/Comparative study引用本文复制引用
基金项目
贵州省特色林业产业科研项目(特林研2020-17)
贵州省科技支撑项目(黔科合支撑[2022]一般100)
出版年
2024
NETL
NSTL
万方数据