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[目的]新奥霉素是一种新开发的生物杀菌剂,为明确其对植物病原真菌的抑制活性,采用菌丝生长速率法测定了新奥霉素对7种植物病原真菌的毒力。[结果]新奥霉素对油菜菌核病菌、小麦纹枯病菌、稻瘟病菌、水稻纹枯病菌、小麦赤霉病菌、棉花黄萎病菌和苹果炭疽病菌的EC50值分别为2.61、27.36、63.26、131.64、168.04、421.02、546.51 mg/L。[结论]新奥霉素对植物病原真菌油菜菌核病菌和小麦纹枯病菌具有较强的毒力。
[Objective] The study aimed to determine the inhibitory activity of NPs to phytopathogenic fungi. The mycotoxin growth rate was used to determine the virulence of NPs to seven plant pathogenic fungi. [Result] The results showed that the EC50 values of natamycin against B. sclerotiorum, R. solanacearum, M. cerealis, R. solanacearum, F. graminearum, Verticillium dahliae and P. anthracis were 2.61 and 27.36, respectively , 63.26, 131.64, 168.04, 421.02, 546.51 mg / L. [Conclusion] The new amoxicillin had strong virulence on plant pathogenic fungi Sclerotinia sclerotiorum and Rhizoctonia cerealis.