论文部分内容阅读
裂叶榆又叫青榆、刺花榆、大叶榆,属落叶乔木。主要分布在我国东北、河北、内蒙等地。裂叶榆树皮淡灰色。叶倒卵形,长7～18厘米,先端3～5裂,边缘有重锯齿。其木材纹理直,材质好,不翅不裂,可作枕木、矿柱及车辆、农具用材,也是上等的家具用材。裂叶榆树干笔直,叶大枝繁,树影婆娑,姿态优美,既可用作庭园绿化,又适于作行道树。
Cracked leaves Yu also known as blue elm, thorns elm, large leaf elm, is a deciduous tree. Mainly distributed in China’s northeast, Hebei, Inner Mongolia and other places. Cracked leaves elm bark pale gray. Leaves obovate, 7 to 18 cm long, apex 3 to 5 crack, the edge of a heavy serrated. The wood texture straight, good material, not wings do not crack, can be used for sleepers, pillars and vehicles, farm tools timber, is also the finest furniture timber. Cracked leaves elm tree stem straight, leaves large branches, tree shadow whirling, beautiful posture, can be used as a garden afforestation, but also suitable for street trees.