制造“5406”一级培养基,需要琼脂,但是不易买到,价格又贵。如何使“5406”能在生产队普遍生产,成本更加低廉?甘肃省会宁县大沟中学革命师生带着这个问题学习了毛主席著作,开展了革命大批判,坚持自力更生,通过多次试验,先后用洋槐枝、榆树枝、中国槐树枝、玉米秆以及用洋芋粉代替琼脂,试制成功“5406”一级培养基。(一)榆树枝:用淡碱水浸泡4小时后作培养基,生长良好。 Manufacturing “5406” a medium, the need for agar, but not easy to buy, the price is expensive. How to make the “5406” can be widely produced in the production team, the cost is cheaper? Goujin County, Huai County Dagou middle school revolutionary teachers and students took this issue studied Chairman Mao’s writings, carried out revolutionary criticism, adhere to self-reliance, through many tests, successively With “acacia” branch, elm branch, Chinese acacia branches, corn stalks and potato instead of agar, “5406” primary culture medium was successfully made. (A) elm sticks: soaked with light alkali for 4 hours after the medium, good growth.