烟草野火病属细菌性病害。云南主要烟区普遍发生，严重影响着烟叶质量，成为我省烤烟上主要病害之一。一、病害症状野火病在烤烟苗期和生长期均可出现。开始叶上呈黑褐色水渍小斑，圆形，病斑周围有明显的黄色晕圈，几个病斑可愈合形成不规则状斑块，有的产生轮纹，干燥时... Tobacco wildfire is a bacterial disease. The main tobacco-producing areas in Yunnan are common and seriously affect the quality of tobacco leaves, becoming one of the main diseases on flue-cured tobacco in our province. First, the symptoms of disease Wildfire in tobacco seedling and growing stage can occur. The beginning of the dark brown water stains on the leaves are small spots, round, obvious yellow halo around the lesion, several lesions may heal to form irregular plaques, and some produce wheel pattern, when dry ...