活的树桩,在生长的任何阶段,都有发生病虫害的可能。常见的病害有根部病害(根腐病)、枝干病害(腐烂病、溃疡病)、叶面病害(黄化病、叶斑病、白粉病)等。常见的虫害有蛀干害虫和刺吸性害虫两类。根部病害根腐病是一种典型的根部病害。它是由各种细菌的寄生引起根部腐烂。主要防 Live stumps have the potential for pests and diseases at any stage of their growth. Common diseases are root disease (root rot), stem disease (rot disease, ulcer disease), foliar disease (yellow disease, leaf spot disease, powdery mildew) and so on. Common pests are borer pests and sucking pests two types. Root disease root rot is a typical root disease. It is caused by the parasites of various bacteria root rot. The main defense