姜瘟是由黄极毛杆菌属的姜腐烂病菌的细菌引起生姜致病。由于土壤存菌(可在土壤中存活2年以上)或种姜带菌,在适宜细菌生长发育和侵入的高温高湿条件下,从伤口或叶部侵入组织,使根茎、茎或叶片受害。根茎受害病斑初呈水渍状,后变黄褐色,失去光泽,内部组织逐渐腐烂,并充满白色恶臭汁液,仅留外皮。姜茎受害初呈暗紫色,后变黄褐色并腐烂,叶片萎蔫卷缩,由黄变褐,最后全株枯死。在高温多雨季 Jiang Jin is caused by bacteria of the genus Grifola of Gypsophila causing ginger pathogenesis. As the soil bacteria (can survive in the soil for more than two years) or species of ginger, under the conditions of high temperature and humidity suitable for bacterial growth and invasion, invasion from the wound or leaf tissue, root, stem or leaf damage. Rhizome lesions initially showed water stains, after turning yellow-brown, tarnished, the internal organization gradually decay, and full of white malodorous juice, leaving only the skin. Early damage to ginger stem dark purple, yellowish brown and decay, leaf wilting curl, from yellow to brown, and finally the whole plant died. In the hot and rainy season