甜菜丛根病或称疯根病(Rnizamunia)是以土壤真菌——甜菜多粘菌(Polymyxa betue)为介体,以甜菜坏死黄脉病毒(BN YVV)为病原的病毒病。甜菜一旦感染此病,产量和糖分就会大幅度下降,甚至绝产。据资料记载,甜菜丛根病于1950年在意大利北部泊河流域的甜菜产区首次发现。70年代以来病区急剧增加,目前已有法国、苏 Beetroot Rhizobium or Rnizamunia is a viral disease that is mediated by the soil fungus Polymyxa betue, which is the causal agent of the beet necrotic yellow vein virus (BN YVV). Once the beet is infected with the disease, the yield and sugar will drop significantly, and even be absolutely dead. According to the records, beet root disease was first discovered in the beet producing area of ​​the Po River basin in northern Italy in 1950. Since the 1970s, the number of wards has dramatically increased. At present, there are France and the Soviet Union