遵照毛主席关于“自力更生,艰苦奋斗”的伟大教导,在县党委、县革委会的领导下,在贫下中农大力支持下,我们对“5406”菌种退化问题进行了研究。经过近四个月的实践证明,采用下述办法,不仅能防止菌种退化,而且能够增强菌种的生活力,提高效价。我们采用这种办法使用三管菌种进行生 Following Chairman Mao’s great teaching of “self-reliance and hard work”, under the leadership of the county Party committee and county revolutionary committees and under the support of the poor and middle peasants, we conducted a study on the degeneration of “5406” bacteria. After nearly four months of practice has proved that the use of the following methods, not only to prevent the degradation of bacteria, but also to enhance the viability of species and improve potency. We use this approach using three strains of bacteria