摘要
为了改造丘陵山区的森林植被,培育优质、高效的阔叶林资源,于2006年3月,在苏南茅山丘陵营造了22个杂交马褂木无性系测定试验林。造林第2 a时,参试无性系平均成活保存率89.66%、树高2.6 m,胸径2.64 cm,冠幅1.57 m。不同无性系间成活保存率、树高、胸径、冠幅性状存在显著变异,其重复力分别为0.50,0.53,0.62和0.55。按综合指数排序,初选出18号、8号、35号、7号和9号等5个杂交马褂木优良无性系,第2 a时平均树高、胸径和冠幅分别为2.82 m、3.12 cm和1.70 m,与排序最后的11号、14号、34号、3号和30号5个无性系相比,分别增加达18.0%,39.9%和16.4%。
The planting experiment was conducted with 22 clones of Liriodendron chinense x tulipifera at Maoshan hill area in southern Jiangsu in March, 2006. The results indicated that the average planting survival rate was 89.66%. Moreover, the mean tree height, DBH and crown width were 2.6 m, 2. 64 cm and 1.57 m at 2 years old, respectively, and were significantly different among those clones. The repeatability was 0. 50, 0. 53, 0. 62 and 0. 55. Finally, the five fine clones （ No. 18, No. 8, No. 35, No. 7 and No. 9） were selected by synthetical index. Its mean tree height, DBH and crown width were 2.82m, 3.12cm and 1.70m, and increased by 18.0% , 39. 9% , and 16.4% , respectively, compared with No. 11, No. 14, No34, No. 3 and No. 30.
出处
《江苏林业科技》
2008年第6期1-4,共4页
Journal of Jiangsu Forestry Science & Technology
基金
国家林业局科技成果推广项目"长江流域低山丘陵区优良植物材料推广"[(2006)长江-3号]
江苏省农业科技攻关项目"丘陵山区高效稳定森林植被恢复与恒续经营技术研究与应用"(BE2005367)研究内容
关键词
杂交马褂木
无性系
综合指数
选择
Liriodendron chinense
tulipifera
Clone
Synthetic index
Selection
