Mainly 3 parts were studied on this thesis; they were Pest risk analysis (PRA) and detection techniques of Erwinia amylovora and susceptibility of some rosaceae plants in China to fire blight.

• 本论文主要进行了梨火疫病菌的风险分析、国内部分蔷薇科植物对梨火疫病的感病性及梨火疫病菌的检测技术研究。