【摘要】 薤软腐病是由胡萝卜软腐欧氏杆菌胡萝卜致病变种(Erwinia carotovorasub sp.carotovora)引起的。有病鳞茎和带菌土壤是大田发病的初侵染源,病菌通过伤口侵入寄主,导致组织腐烂,甚至全株死亡。经人工接种试验,该病菌至少能为害7科14种植物。在发病初期使用24%农用链霉素可溶性粉剂100~200mg·kg-1水溶液、25%叶枯宁可湿性粉剂600~900倍液和45%代森铵水剂600~900倍液等能有效控制病情发展。更多还原

【Abstract】 Soft rot in Allium chinense G.Don is caused by Erwinia carotovora subsp.carotovora.The preliminary infection sources are diseased bulb and pathogen contained soil.The bacteria infect host plant through wound and then cause the tissue rot,even death.Artificial inoculation results showed that the bacteria could infect 14 plant species belonging to 7 families.This disease could be effectively controlled by using 24 % Streptomycin,25 % Bismerthiazol and 45 % Ambam at the initial infection stage.更多还原