一般广谱高效的杀菌剂都能够有效的对植物的病害进行防治，而药效期长的不符合现代农业生产的要求。常规品种中，多菌灵的残效期较长。
一些保护性杀菌剂药效期长一些，如代森锰锌、百菌清、嘧菌酯等。
哪些农药属于DMI杀菌剂
三唑酮、烯唑醇、丙环唑、戊唑醇、氟硅唑、恶醚唑、咪鲜胺、氯苯嘧啶醇等等
Propiconazole is a triazole fungicide, also known as a DMI, or demethylation inhibiting fungicide due to its binding with and inhibiting the 14-alpha demethylase enzyme from demethylating a precursor to ergosterol. Without this demethylation step, the ergosterols are not incorporated into the growing fungal cell walls, and cellular growth is stopped.