番茄轮纹病及其防治轮纹病是番茄生产上常见的一种病害。除了侵染番茄外，还危害马铃薯、辣椒、茄子等多种蔬菜。该病菌侵染叶、茎和果实。侵染初期，叶片上出现暗褐色水渍状小点，扩大后变成圆形、椭圆形的大斑。病斑边缘深褐色，中央褐色，并有同心轮纹。在潮湿时，在病... Tomato ring disease and its prevention and treatment of ring rot disease is a common tomato disease. In addition to infected tomatoes, but also endanger the potato, pepper, eggplant and other vegetables. The bacteria invade leaves, stems and fruits. In the early stage of infection, dark brown water stains appeared on the leaves, expanding into circular and oval spots. Smear edges dark brown, central brown, and concentric pattern. When damp, sick ...