不同种源红椿在武汉地区引种8年生长表现分析  

Growing Performance of Toona ciliata from Different Provenances Introduced in Wuhan for 8 Years

作　　者：张亚东[1] 陈慧玲[1] 黄国伟[1] 周国清[1] 张新叶[1] ZHANG Yadong;CHEN Huiling;HUANG Guowei;ZHOU Guoqing;ZHANG Xinye(Hubei Academy of Forestry,Wuhan 430075)

机构地区：[1]湖北省林业科学研究院,武汉430075

出　　处：《中国农学通报》2024年第34期50-55,共6页Chinese Agricultural Science Bulletin

基　　金：湖北省林科院攻关项目“珍贵速生乡土树种红椿早期选择及繁育栽培关键技术研究”(2021YGG04)。

摘　　要：为合理评价武汉地区引种的异地红椿种源的适应性及生产力,以4个红椿种源为试验材料,开展2、4、6、8年生胸径、树高等生长性状调查及8年生红椿活立木Pilodyn探测值、木材基本密度指标的测定分析。结果表明,红椿4个林龄的胸径、树高及8年生单株材积,在4个不同红椿种源间均存在极显著差异;4个种源8年生Pilodyn探测值(Pn)平均为46.53mm,南向外侧木材基本密度(Ds)与南向整株木材基本密度(Db)的平均值分别为0.3938、0.38845 g/cm^(3),而且这3个材性指标在不同种源间均存在极显著差异。回归分析表明,Pn与Db、Pn与Ds之间均存在极显著负相关线形关系。不同种源所有单株间的Pearson相关性分析表明,8年生胸径、树高、材积这3个生长量指标之间,以及生长量指标与Pn值之间呈极显著正相关,但Pn值与Ds、Db间呈极显著负相关,Ds与Db之间呈极显著正相关。In order to reasonably evaluate the adaptability and productivity of exotic Toona ciliata provenances introduced in Wuhan,four T.ciliata provenances were used as experimental materials,the growth traits such as diameter at breast height(DBH)and tree height at 2,4,6 and 8 a,as well as the Pilodyn detection value and the basic density indexes of wood in the 8-year-old T.ciliata were investigated and determined.The results showed that there were highly significant differences in DBH,tree height and volume of 8 a trees among different provenances.The average value of 8-year-old Pilodyn detection value(Pn)of the four provenances was 46.53 mm,and the average values of the south-facing outer wood density(Ds)and the south-facing whole wood density(Db)were 0.3938 and 0.38845 g/cm^(3) respectively,and there were highly significant differences in these three wood properties among different provenances.Regression analysis showed that there was a highly significant negative linear correlation between Pn and Db and between Pn and Ds.Pearson’s correlation analysis among all individuals of different provenances showed that there was a highly significant positive correlation between DBH,tree height,and volume of lumber at 8 a,as well as a highly significant positive correlation between the growth indicators and the value of Pn,but a highly significant negative correlation between the value of Pn and the values of Ds and Db,and a highly significant positive correlation between the values of Ds and Db.

关 键 词：红椿 种源 生长性状 Pilodyn探测值 木材基本密度 相关分析 

分 类 号：S72[农业科学—林木遗传育种]