摘要
为闽楠苗木的培育及质量评价提供理论依据,采用抽样调查方法测定贵州不同区域闽楠苗木的形态指标,以苗高、地径和≥5cm侧根数为主要评价指标,主根长和根幅作为辅助指标,建立苗高（H）和地径（D）指标的3级苗木质量分级体系,对贵州不同地理区域闽楠裸根苗的生长状况进行评价,并制定闽楠裸根苗的分级标准。结果表明：闽楠苗在三都县和独山县生长最好,在遵义县生长最差。闽楠裸根苗的质量分级标准：Ⅰ级苗,H≥28.3cm,D≥0.41cm;Ⅱ级苗,28.3cm〉H≥14.8cm,0.41cm〉D≥0.32cm;Ⅲ级苗,H〈14.8cm,D〈0.32cm。三都县Ⅰ～Ⅱ级苗占总数的91.6%,从江县和独山县分别占各自总数的33.8%和47.3%,遵义生长的闽楠苗均为Ⅲ级苗。
To provide the theory evidence for seedling cultivation and quality evaluation of P.bournei,adopting sampling survey method,the authors investigated the morphological indices of annual bare root seedling of P.bourne which grew in different regions of Guizhou.Taken the height,ground diameter and the number of lateral root greater than 5cm length as main evaluation indices,the main root length and the root width as subsidiary indices,by building the three grade seedling quality grading system,the authors evaluated the grow status of P.bournei bare root seedling in different regions,and made the grading standards of P.bournei bare root seedlings.Results：The seedlings grew in Sandu and Dushan are the most optimal,while the seedlings in Zunyi are the worst.A three-class seedling grading system is established.That is,classⅠ：H≥28.3cm,D≥0.41cm;classⅡ：28.3〉H≥14.8cm,0.41〉D≥0.32cm;classⅢ：H〈14.8cm,D〈0.32 cm.Among the four counties,the percentages of classⅠandⅡseedlings are91.63%in Sandu County,33.84%in Congjiang County and 47.28%in Dushan County,respectively,all seedlings in Zunyi belong to classⅢ.
出处
《贵州农业科学》
CAS
2015年第6期153-157,共5页
Guizhou Agricultural Sciences
基金
贵州省林业厅重大专项"贵州乡土优质阔叶用材树种培育与示范"[黔林科合(2010)重大02]
贵州省优秀青年科技人才基金项目"珍贵用材树种闽楠种苗质量保障技术及栽培生理基础研究"[黔科人合字(2011)15]
贵州大学研究生创新基金项目[研农2014027]
关键词
闽楠
裸根苗
质量评价
苗木分级
Phoebe bournei
bare-root seedling
quality evaluation
seedling classification
