广西特色大横枝杉优树选择  

Superior Tree Selection of Guangxi Characteristic Cunninghamia lanceolata

作　　者：程琳 戴俊[1,2] 陈代喜 陈晓明[1,2] CHENG Lin;DAI Jun;CHEN Dai-xi(Guangxi Forestry Research Institute,Nanning,Guangxi 530002;Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation,Nanning,Guangxi 530002)

机构地区：[1]广西壮族自治区林业科学研究院,广西南宁530002 [2]广西优良用材林资源培育重点实验室,广西南宁530002

出　　处：《安徽农业科学》2025年第1期123-125,共3页Journal of Anhui Agricultural Sciences

基　　金：广西林业科技推广示范项目(2023GXLK23);广西科技计划项目(桂科AB22035083)。

摘　　要：采用5株优势木对比法,对广西特色大横枝杉展开调查,探索大横枝杉的生长特性,初选优树35株,优势木175株。经统计分析,确定了大横枝杉优树选择范围:胸径和材积分别是优势木均值的207%和569%,树高大于优势木均值。根据该范围,对35株候选优树进行复选,获得大横枝杉Ⅰ级优树19株,Ⅱ级优树6株,入选率分别为54.29%和17.14%,可为大横枝杉无性系种子园营建提供优质种质材料。In order to provide a theoretical basis for the selection and breeding of improved varieties of Taxodiaceae plants,the growth of Guangxi characteristic Cunninghamia lanceolata were investigated by using five dominant tree comparison methods.A total of 35 superior trees and 175 dominant trees were selected.Through statistical analysis,the range for the selection of superior trees was determined:DBH and volume were 207%and 569%of the average value of dominant trees,respectively,and tree height was greater than the average value of dominant trees.According to this range,35 candidate superior trees were re-selected,and 19 superior trees of grade I and 6 superior trees of grade II were obtained.The selection rates were 54.29%and 17.14%,respectively,which could provide high-quality germplasm materials for the construction of clonal seed orchard of Cunninghamia lanceolata.

关 键 词：大横枝杉 优树选择 变异规律 

分 类 号：S791.27[农业科学—林木遗传育种]