本文介绍了加拿大应用生物技术防治根腐病、溃疡病,硬松类西方瘤锈病、荷兰榆树病、种子传病害、木腐病、低温和冰核因子造成的病害以及松材线虫病方面的新进展。同时也介绍了杂交瘤和单克隆抗体技术、生物化学技术、病菌毒素研究技术、核酸研究技术和生物防治技术在病害治理中的作用。 This article describes the Canadian application of biotechnology to control root rot, ulcer disease, Pinus pinaster western rust rust, Netherlands elm disease, seed transmission disease, wood rot, diseases caused by low temperature and ice nuclear factor and the new pine wilt disease progress. The role of hybridoma and monoclonal antibody technology, biochemistry, pathogen toxin research, nucleic acid research and biocontrol technologies in disease management is also described.