苹果树腐烂病在我国各苹果产区均有发生。主要发生于主干、大枝、侧枝上,也发生在小枝上。症状表现为两种类型:一是溃疡型。主要发生在主干、主枝和侧枝上以及剪锯口处。发病初期,病部略显湿润,红褐色。以后病部逐渐扩 Apple tree rot disease in our apple producing areas have occurred. Mainly occurred in the trunk, large branches, side branches, also occurred in the branch. Symptoms manifested in two types: one is ulcer type. Mainly occurred in the trunk, main branch and side branches and cut at the kerf. Early onset, the disease slightly moist, red-brown. After the disease gradually expanded