The present invention relates to a method for treating an ulcer disease occurring from a tree. More particularly, the present invention relates to a method for treating an ulcer disease occurring from a fruit tree, especially a kiwi fruit tree by using bordeaux mixture and citric acid. To this end, the method comprises the steps of: preparing bordeaux mixture； obtaining a diluted composition； and giving injection.본 발명은 수목에 발생하는 궤양병을 치료하는 방법에 관한 것으로, 더욱 상세하게는 보로도액과 시트르산을 이용하여 과실수, 특히 키위 과실수에 발생하는 궤양병을 치료하는 방법을 개시한다.
