苹果疫腐病又称实腐病、颈腐病。随着果树矮化密植的方向不断发展，苹果疫腐病是值得重视的一种病害。 一、发病症状 发病部位为果实、根颈及叶片。果实受害后，果面产生褐色斑点，边缘不甚清晰，条件适宜时，迅速扩及全果。扩大后，病斑不规则，呈深浅不均匀的暗红褐色，边缘 Apple is also known as rot disease rot, neck rot disease. With the continuous development of dwarfing and dense planting of fruit trees, apple blight is a disease worth paying attention to. First, the incidence of symptoms of the disease parts, root neck and leaves. Fruit damage, the fruit surface brown spots, the edge is not clear, when conditions permit, the rapid expansion of the whole fruit. Enlarged, the lesion irregular, dark reddish brown with uneven depth, the edge