论文部分内容阅读
华山松生长迅速,材质良好,是我省主要造林用材树种之一。但在一些地方由于管理粗放和盲目修枝,一些华山松林出现生长慢、矮小、多节疤,树干不通直,材质低劣等情况。针对这一情况,我们通过参看各种修枝资料和生产实践,总结出华山松的修枝方法。林木修枝的目的是通过修枝,保持树冠圆满、通风、透光,充分利用空间的物质和能量,促进林木良好的生长发育,保证材质优良,提高出材率。为此,华山松修枝要注意以下几点:(1)修枝期应选择树种进入休眠期至春季树液开始葫动
Huashan pine growing rapidly, good material, is one of the main afforestation timber species in our province. However, in some places, due to the extensive management and blind pruning, some Pinus armandii forests grow slowly, shortly, many knots, the trunk is not straight, and the material is poor. In view of this situation, we summarize the pruning method of Pinus armandii by referring to various pruning materials and production practices. The purpose of tree pruning is pruning, to maintain the crown of the crown, ventilation, light, take full advantage of the space material and energy to promote good growth and development of trees, to ensure good material, improve the timber rate. To this end, Pinus densiflora should pay attention to the following points: (1) should be selected during the pruning period to enter the dormancy tree spring began to gourd