甘肃省当归病害种类调查及其病原鉴定

摘要

对甘肃省当归(Angelica sinensis)主产区岷县、渭源等4县5个乡镇的当归病害进行了调查和病原鉴定,共发现7种病害,分别为当归褐斑病(Septoria sp.)、白粉病(Erysiphe heraclei DC.)、根腐病[Fus arium avenaceum (Fr.) Sacc.]、霜霉病[Plasmopara angelica( Caspary) Trotter]、茎线虫(麻口)病(Ditylenchus destructor Thorne)、1种病毒病和1种细菌性病害(毒源和茵源待定).茎线虫病和根腐病发病率在60％～70％,严重影响当归的产量和品质,是亟待解决的问题.%7 diseases have been found through disease surveys on Angelica sinensis in Minxian, Weiyuan county of Gansu Province. They were brown spot(Septoria sp.), powdery mildew (Erysiphe heraclei DC).root rot [Fusarium avenaceum(Fr) Sacc.], downy mildew (Plasmopara angelica), nematode (Ditylenchus destructor Thorne), a virus and a bacteria disease. Brown spot and nematode were the most severe diseases, whose incidence reached 60%-70%, and are the urgent problems needed to be solved effectively.