2009年6月,我国政府和加拿大政府就加拿大输往中国的粮谷油籽进行了检疫要求的谈判,加国对我国将十字花科小球腔菌(Leptosphaeria maculans)列入油菜籽检疫名单中提出疑义。本文对病原菌进入以及扩散与定殖的可能性、入侵后造成的后果等方面进行了初步风险分析,为我国适时调整菜籽进口策略、做好口岸检疫应对准备提供参考。 In June 2009, the Chinese government and the Canadian government conducted negotiations on the quarantine requirements for grain oilseeds exported to China in Canada. Canada added to our list of Leptosphaeria maculans in the quarantine list of rapeseed Raise doubts This article conducted a preliminary risk analysis on the entry of pathogens, the possibility of proliferation and colonization, the consequences after the invasion and so on, which provided a reference for China to timely adjust the rapeseed import strategy and prepare for the port quarantine.