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在柑橘树伤口上涂沥青，具有很多奇妙的作用。1防腐柑橘树因受到严重的机械损伤或病虫为害而造成的伤口，若在伤口处涂上一层沥青，不但可以保护伤口，而且能有效防止木质腐烂。2防虫柑橘天牛习惯在伤口处产卵，用沥青盖住伤口，保持树干光滑，破坏了柑橘天牛成虫产卵的场所，
Applying bitumen to citrus tree cuts has many wonderful effects. A preservative citrus tree due to severe mechanical damage or pest damage caused by the wound, if the wound coated with a layer of asphalt, not only to protect the wound, but also effectively prevent wood decay. 2 pest control Citrus cerambyten used to lay eggs in the wound, covered with asphalt wounds, keep the trunk smooth, destroyed the citrus celastrus adult spawning sites,