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解放以来,菌肥的研究进行了各方面的工作,取得了显著成就,并在农業增产中起着一定作用。在解放以前,菌肥的研究只做了一些根瘤菌的工作,其他差不多是空白。解放后在党的領导下,菌肥的研究工作开展很快。1950年中国科学院林業土壤研究所在东北土壤中分离出四株活力较强的大豆根瘤菌,1953年开始在东北大面积推广,平均增产5—10％。1950年华北农科所以国外引进的花生根瘤菌造成菌剂,在山东、河南、河北等省大面积推广,平均增产15％,其后在1953年分离到新菌种,逐漸更替引进种。1954年东北农科所在东北土壤中分离出
Since the liberation, the study of bacteriostat has carried out various aspects of work and made notable achievements. It has played a role in increasing agricultural output. Before the liberation, the research of the bacteriostat only did some work on rhizobia, and the rest was almost blank. After the liberation, under the leadership of the party, research and development of bacterial fertilizer was carried out rapidly. In 1950, the Institute of Forestry and Soil Science, Chinese Academy of Sciences isolated four strains of soybean rhizobia with stronger vitality in northeastern China. In 1953, large-scale soybean rhizobium was initially introduced in Northeast China, with an average yield of 5-10%. North China Agricultural Sciences in 1950 so foreign introduction of peanut rhizobia caused by bacteria, large-scale promotion in Shandong, Henan, Hebei and other provinces, an average increase of 15%, followed by the separation of new species in 1953, the gradual replacement of the introduction of species. Northeast China in 1954 in Northeast soil isolated