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银杏别名公孙树,全身是宝,具有欣赏、经济、药用等价值,是世界上珍贵的树种之一,被称为植物界中的“活化石”。因此,对其古老大树进行救治与复壮具有重要的意义。笔者所在单位院子里的银杏树,树干直径53cm、高26m。由于树龄大,生长力及抗性减弱,银杏树干基部腐烂形成空洞,树皮部出现大面积腐朽,木质部已重度腐烂至髓心,蚂蚁、木蛾等虫害严重,树体严重衰竭,濒临死亡。
Ginkgo alias Gongsun Shu, the body is treasure, with appreciation, economic, medicinal and other values, is one of the precious tree species in the world, known as the plant community “living fossil ”. Therefore, the ancient tree for its rescue and rejuvenation is of great significance. The author’s unit ginkgo tree, trunk diameter 53cm, height 26m. Due to the large tree age, weak growth and resistance, the base of ginkgo tree became rotten at the base, the decay of the tree bark occurred on a large scale, the xylem had decayed to the center of pith greatly, the ants and moths were seriously damaged, the tree was severely exhausted and dying.