论文部分内容阅读
裂叶榆(Ulmus laciniata Mayr.),又叫山榆、大叶榆、青榆、刺花榆。为落叶乔木。主要分布在我国东北、河北、内蒙等地。其材质优良,纹理美观,耐腐力强,不翘不裂,容易加工,是上好的家具用材和高级地板材,还可作车辆材、枕木、矿柱、农具用材等。裂叶榆树干通直,枝繁叶大,姿态优美,也可供庭园绿化和观赏之用。然而,裂叶榆结种量少,出苗率低,用种子繁殖和扦插育苗都比较困难。所以,自1982年以来,我们先后在几处做了小面积嫁接试验,初步获得成功,并掌握了一定的嫁接技术。为了获得更准确的试
Crackle Ulmus (Ulmus laciniata Mayr.), Also known as mountain elm, big leaf elm, blue elm, thorn elm. Deciduous trees. Mainly distributed in China’s northeast, Hebei, Inner Mongolia and other places. Its excellent material, beautiful texture, corrosion resistance, not Alice not crack, easy processing, is a good furniture timber and advanced flooring, but also for vehicles, sleepers, ore pillars, tools and other agricultural tools. Cracked leaves elm trunk straight, branches and leaves large, beautiful posture, but also for the garden green and ornamental use. However, Crassulaceae few species of seedlings, emergence rate is low, with seed breeding and cutting propagation are more difficult. Therefore, since 1982, we have done a small area grafting experiment in several places, initially achieving success and grasping some grafting techniques. In order to get more accurate test