叶斑病又称蛇眼病,主要为害叶片、叶柄、果梗、嫩茎和种子。在叶片上形成暗紫色小斑点,扩大后形成近圆形或椭圆形病斑,边缘紫红褐色,中央灰白色,略有细轮,使整个病斑呈蛇眼状,病斑上不形成小黑粒。使用药剂:发病初期用70%百菌清可湿性粉剂500￣700倍液喷施,10天后再喷一遍,或用 Leaf spot disease, also known as snake eye disease, the main damage leaves, petiole, fruit stems, tender stems and seeds. The formation of small dark purple spots on the leaves, expanded to form a nearly circular or oval lesions, the edge of purple-brown, central gray, slightly thin round, so that the entire lesion snake-like, lesion does not form small black particles. The use of agents: early onset with 70% chlorothalonil WP 500 ~ 700 times spraying, spray again after 10 days, or