杭州市郊区工农“五·七”学校微生物组的革命师生,遵循毛主席光辉的“五·七”指示和“教育必须为无产阶级政治服务,必须同生产劳动相结合”的方针,走出校门,和贫下中农一起积极参加三大革命运动。他们继试制成简易砂管孢子(防止菌种退化和便于长期保存)以后,又针对目前冻粉(琼脂)供不应求的情况,根据牛毛草具有丰富的蛋白质、糊精等特点,进行用牛毛草代用冻粉试验,经反复实验,终于用稀醋酸中和其碱性,解决了牛毛草碱性重,遇高温蛋白质、糊精等物质易遭破坏的问题,成功地制成马铃薯——牛毛草培养基,培养成“701”(白地霉)、“920”和“5406”抗生菌的斜面孢子。试验表明,牛毛草 Revolutionary teachers and students of the “July 7th” school microbial group in the suburbs of Hangzhou city follow the guideline of Chairman Mao’s brilliant “May 7” directive and the guide line of “education must serve proletarian politics and must be integrated with productive labor.” , And actively participate in the three major revolutionary campaigns with the poor and middle peasants. They try to make a simple tube spores after the trial (to prevent the degradation of bacteria and long-term preservation for ease), but also for the current shortage of frozen powder (agar) situation, according to rich hairy grass protein, dextrin and other characteristics, Substitution frozen powder test, after repeated experiments, and finally with dilute acetic acid to neutralize its alkaline to solve the alkaline weight of hairy, in case of high temperature protein, dextrin and other substances easily damaged problem, the success of the potato - Medium, beveled spores cultivated as “701” (Geotrichum candidum), “920” and “5406” antibiotics. Experiments show that hairy grass