多效霉素是一种抗菌范围广,治疗效果好的新农用抗菌素.1981年元月,在市郊金海公社试验场温室内对黄瓜霜霉病进行了药效试验.处理分多效霉素30单位/毫升、50单位/毫升、代森锌65%可湿性粉剂800倍水溶液及对照.喷药后三天取上、中部叶片各20片,调查发病率及病情指数.从调查结果看出(如表),多效霉素对霜霉菌有较强的杀灭作用.两处理予先固定的10片重病叶背面的分生孢子梗及分生孢子,全部萎缩死亡;病叶率和病情指数比对照显 Polymyxin is a new antimicrobial antibacterial with a wide range and good curative effect. In January 1981, cucumber downy mildew was tested in greenhouse in the suburbs of Jinhai Commune. Unit / ml, 50 units / ml, dexamethasone 65% wettable powder 800 times the water solution and the control.From three days after spraying, the central leaves of the 20, the investigation of morbidity and disease index.From the survey results ( For example, the results showed that polymycin had a strong killing effect on downy mildew, and both of the 10 pre-fixed 10 condyloma and conidia on the back of the diseased leaf all died of atrophy; Significantly more than the control