对来自我国不同地区的玉米杂交种穗粒腐病原分离鉴定的结果表明,镰刀菌(Fusarium)和蠕孢菌(Helminthosporium)是引起杂交种穗粒腐的优势菌群,分离频率较高的病原菌还有木霉菌(Trichoderma)、青霉菌(Penicillium)、曲霉菌(Aspergillus)等。种子产地来源对病原菌的分离频率有很大影响,辽宁和山西玉米杂交种穗粒腐病原菌的优势种群是蠕孢菌,而山东和河南则以镰刀菌为优势种群,同一产地不同品种之间穗粒腐的病原菌分离比率也存在一定差异。 Isolation and identification of the pathogen of maize hybrids from different regions in China showed that Fusarium and Helminthosporium were the dominant bacteria that caused spike rot in hybrids. There Trichoderma (Trichoderma), Penicillium (Penicillium), Aspergillus (Aspergillus) and so on. The origin of seeds had a great influence on the frequency of pathogen isolation. The dominant species of spike rot pathogens in Liaoning and Shanxi maize hybrids was Staphylococcus aureus, while Fusarium was the dominant species in Shandong and Henan, There are also some differences in the separation rate of rotten pathogens.