病害症状病菌侵入叶片、新梢和果实的幼嫩组织后产生分生孢子,使局部细胞组织受到破坏而形成病斑。叶片上病斑隆起,向叶背突出而叶面凹陷,呈圆锥或漏斗状,不穿孔,使叶片变畸、扭曲、早落。新梢上的病斑与叶片基本相同,但形状不太规则,突起不如叶片明显,病梢短小、扭曲。果实受害后,果面粗糙,病斑分散,不达果肉;果小,皮厚、味酸,或成为畸形果,易掉落。 Disease symptoms of bacteria invade the leaves, shoots and fruits of young organizations produce conidia, so that the destruction of local cellular tissue and the formation of lesions. Leaf lesions on the bulge, prominence to the leaf back and depression, was conical or funnel-shaped, non-perforated, so that leaves deformed, twisted, early fall. Shoots and shoots on the shoots are basically the same, but the shape is not too regular, as prominent leaves protruding, short lesions, distorted. Fruit damage, the fruit surface rough, scattered spots, up to the flesh; fruit small, thick skin, pickled, or become deformed fruit, easy to fall.