近年来,在海南澄迈及广东湛江及广西南宁的香蕉产区的一些蕉园出现一种国内较为罕见的香蕉叶斑病,发病的香蕉田块大多靠近水源,或是鱼塘或是水库边。该病的田间症状是病斑初为直径1～2毫米的黄绿色小斑,后发展成大小约(10～15)毫米×(2～5)毫米的条斑或梭斑。病斑中央往往呈灰白色,边缘暗褐色,病斑周围有时有黄晕。田间湿度大,病斑背面会产生灰色霉状物。病斑较多时会汇 In recent years, some banana leaf spot in Hainan banana producing areas in Chengmai of Hainan, Zhanjiang of Guangdong and Guangxi Nanning appear relatively rare banana leaf spot disease, most of the incidence of banana plots close to the water, or fish ponds or reservoir side . The disease in the field is lesion at the beginning of a diameter of 1 to 2 mm yellowish green spots, later developed into about (10 ~ 15) mm × (2 ~ 5) mm of the plaque or shuttle. The lesion is usually white central gray dark brown, sometimes yellow halo around the lesion. Field humidity, the lesion back will produce gray moldy. Spot will be more when the lesion