一九七五年四至五月间,我们用了30多天时间,生产白僵菌五吨多,最高日产达380多斤,含孢量达160—200亿左右,最高的达310亿,现就生产过程中的一些体会介绍如下:一、四级培养,扩大生产为了使白僵菌大上快上,我们把生产流程改为四级培养法:砂土管→一级斜面→二级液体种子→三级大瓶扩大→拌菌→成品。(摇床培养) (通气培养) (发酵培养) From April to May 1975, we spent more than 30 days producing Beauveria bassiana five tons and a maximum of 380 kilograms per day. The content of spores reached about 160-200 billion and the highest reached 31 billion. Now Some experience in the production process described below: First, the four-level training to expand production In order to make Beauveria on the fast, we put the production process to four culture method: sand tube → a slope → two liquid seeds → Three bottles to expand → mixed bacteria → finished product. (Shaker culture) (aeration culture) (fermentation culture)