对城市园林大树修剪的探讨

Studies on Shaping and Pruning Big Trees to Urban

通过对大规格树木进行修剪,找出规律及相对合理的理论依据,为今后修剪制定科学合理的操作规范提供帮助。以国槐、油松、银杏3种树木作为研究对象,进行修剪,并对修剪前后的树木进行比较、分析,得出结果：有明显的中央主干的树木（油松、银杏）的修剪不应对已成型的树势改动过大,只对树冠作适当的调整,一级枝修剪应以中上部为主,二级枝以中、下部为主。修剪量在1/5~1/4之间,没有中央主干的树木（国槐）枝条萌发力强,修剪量可适当加大,以三级以上枝条为主,修剪量在1/3左右为宜。对成形的大规格树木进行科学合理的修剪对促进树木的生长和满足人们观赏需求具有重要意义。

By shaping and pruning big trees, found out the law of cutting and reasonable theoretical evidence, to be helpful for establishing a technical standard of big tree shaping and pruning. With the study of shaping and pruning of three varieties trees, including Chinese scholartree, Chinese pine and gingkgo, it showed that when a tree with main trunk, it do not need to be cut heavily. Just trim the uper little branches off the first branch or trim the lower part little branches off the second branch. But for trees without the main trunk, the branches can be cut down a lot. In conclusion it would be helpful for the growing of big trees with rational cutting beautiful trees. And, as a result, it is also important for the people to enjoy the sight of beautiful trees.