安徽农业大学学报2018，Vol.45Issue(6)：1044-1048,5.DOI:10.13610/j.cnki.1672-352x.20190102.020
引进优质用材树种美国红橡的生长特性
Study on growth characteristics of American red oak introduced with high-quality wood
摘要
Abstract
In this paper, the wood growth characteristics of three species of Quercus nuttallii, Quercus nigraand Quercus shumardii of 14 years introduced in recent years were studied. The main growth indicators include average volume per plant, green wood moisture content, growth ring width, and basic density. The results showed that the average volume of single plant Quercus nuttallii was the largest, which was 0.134 6 m3, and those of Quercus nigra and Quercus shumardii were 0.103 5 m3 and 0.106 3 m3, respectively. The average moisture contents in green wood of Quercus nuttallii, Quercus nigra and Quercus shumardii were 71.76％, 69.79％, and 71.97％, respectively. The radial variation law of the moisture content in green wood was: near the medullary core was higher than that near the bark, and the longitudinal change law of the moisture content in the green wood was: as the height of the tree increased, the moisture content decreased. The average growth ring widths of Quercus nuttallii, Quercus nigra and Quercus shumardii were 7.69 mm, 7.20 mm, and 7.40 mm, respectively. The radial variation of the growth ring width was: firstly increased from the pith to outward and then decreased. The average basic densities of Quercus nuttallii, Quercus nigra and Quercus shumardii were 0.60 g·cm-3, 0.61 g·cm-3, and 0.64 g·cm-3, respectively. The radial variation tendency of the basic density was: increased outward from the pith. The basic densities of Quercus nuttallii, Quercus nigra and Quercus shumardii showed significant differences at the 0.05 level, and the growth ring width was not significant; the differences of growth ring width and basic density were extremely significant between different growth rings; in the interaction effect of tree species × growth rings, the width of the growth ring reached a very significant difference level, but the basic density difference was not significant. The growth ring widths and basic densities of Quercus nuttallii, Quercus nigra and Quercus shumardiiwere all related to the growth age, and the regression level was extremely significant.关键词
美国红橡/材积/生材含水率/生长轮宽度/基本密度Key words
American red oak/wood volume/green wood moisture content/growth ring width/basic density分类
农业科技引用本文复制引用
王慧,潘彪,黄利斌..引进优质用材树种美国红橡的生长特性[J].安徽农业大学学报,2018,45(6):1044-1048,5.基金项目
江苏省科技计划项目"优质用材及观赏北美栎树良种选育"(BE2015370)资助 （BE2015370）
