一、杀菌剂抗药问题的发展和危害在1970年之前长期使用铜、汞、二硫代氨基甲酸盐等残留性常规保护性杀菌剂,生产中未曾发生病菌抗药问题,但1970年之后选择性单作用部位的内吸杀菌剂兴起之后,病菌抗药问题逐步成为生产中的紧迫问题。在荷兰1970年温室黄瓜白粉病对甲菌定抗药,日本1971年稻瘟病对春雷霉素抗药,希腊 First, the development and hazards of fungicide drug resistance Long-term use of copper, mercury, dithiocarbamate and other residual conventional protective bactericides before 1970, the production of bacteria has not been the issue of drug resistance, but after 1970 After the emergence of the systemic fungicide at the selective single site of action, the drug resistance of the bacteria has gradually become an urgent issue in production. In the Netherlands in 1970 greenhouse cucumber powdery mildew resistant to methicillin, Japan 1971 rice blast resistant to kasugamycin, Greece