杉木优良无性系早期生长性状和侧枝发育特征的比较
Comparison analysis of early growth traits and lateral branch development characteristics of fine clones of Chinese fir
[目的]为探究不同杉木无性系早期生长性状与侧枝发育特征的差异,早期筛选适合杉木大径材和无节材培育的优良无性系。[方法]选取福建省顺昌埔上林场的 12 个 3 年生洋系列无性系为研究对象,并以埔上林场培育 2 代、3 代实生苗为对照,连续两年进行树高、地径、侧枝节间距、侧枝长度、侧枝基径、侧枝角度、侧枝数、冠幅高度和冠幅面积等调查分析。[结果]不同杉木无性系生长性状与侧枝发育特征存在显著差异(p<0.05)。其中,洋058 和洋064的树高和地径均显著大于其它无性系,洋 047 的树高和地径增长量显著高于其它无性系,洋 053 的侧枝基径与枝条年轮宽度显著低于其它无性系,洋023 的侧枝节间距、侧枝长度、冠幅直径、冠幅面积、冠幅体积显著高于其它无性系,且侧枝数显著低于其它无性系。不同杉木无性系生长指标与侧枝发育特征之间存在一定的相关性,其中树高、地径与侧枝长度、侧枝基径和侧枝角度呈极显著正相关,侧枝节间距、侧枝长度和侧枝基径之间两两极显著相关(p<0.01),树高、地径与冠幅高度、冠幅面积和冠幅体积呈正相关。[结论]综合不同杉木无性系早期生长性状与侧枝发育特征,洋058 和洋064 的生长性状优良,可做为大径材选育无性系;洋023 的形态性状优良,可作为无节材选育的优良亲本,洋054可作为无节材选育优良无性系。
[Objective]In order to investigate the differences in early growth traits and lateral branch development characteristics of different Chinese fir clones,and to screen the good clone suitable for the cultivation of large diameter and non-knot wood of Chinese fir.[Method]twelve 3-year-old Yang series clone from Pushang Forest Farm in Shunchang,Fujian Province were selected as the research subjects,and the second and third generation seedlings cultivated in Pushang Forest Farm were used as the control,and tree height,ground diameter,internode length of lateral branch,lateral branch length,lateral branch base diameter,lateral branch angle,number of branches,crown height and crown area were investigated and analyzed for two consecutive years.[Result]The results showed that there were significant differences(p<0.05)in the growth traits and lateral branch development characteristics of different Chinese fir clones.The growth characteristics of lateral branch base diameter and annual whorl width of Yang 053 were significantly lower than those of other clones,and internode length of lateral branch,lateral branch length,crown width diameter,crown area and crown volume of Yang 023 were significantly higher than those of other clones,and the number of branches was significantly lower than those of other clones.The number of branches was significantly lower than that of other clones.There were some correlations between growth indexes and lateral branch development characteristics of different Chinese fir clones,among which tree height and ground diameter were highly significantly and positively correlated with lateral branch length,lateral branch base diameter and lateral branch angle,and internode length of lateral branch,lateral branch length and lateral branch base diameter were highly and significantly correlated with each other(p<0.01),and tree height and ground diameter were positively correlated with crown height,crown area and crown volume.[Conclusion]The early growth traits and lateral branch development characteristics of different Chinese fir clones were synthesized,and Yang 058 and Yang 064 have excellent growth traits and can be used as asexual lines for large diameter timber selection;Yang 023 has excellent morphological traits and can be used as an excellent parent for non-knot timber selection,and Yang 054 can be used as an excellent asexual line for non-knot timber selection.
周静;于超;程顺丹;胥清利;马祥庆;李明;
福建农林大学林学院,福建 福州 350002##国家林草局杉木工程技术研究中心,福建 福州 350002;福建农林大学林学院,福建 福州 350002##国家林草局杉木工程技术研究中心,福建 福州 350002;福建农林大学林学院,福建 福州 350002##国家林草局杉木工程技术研究中心,福建 福州 350002;福建省顺昌埔上国有林场,顺昌 353200;福建农林大学林学院,福建 福州 350002##国家林草局杉木工程技术研究中心,福建 福州 350002;福建农林大学林学院,福建 福州 350002##国家林草局杉木工程技术研究中心,福建 福州 350002;
Chinese fir Clones Growth traits Lateral branch development Crown structure
895-904 / 10
评论