根瘤菌肥是生物固氮科学在农业上应用的一种新技术.对增瘤固氮,提高肥力,促进增产起着重要作用.其增产原因是根瘤菌浸入花生的根系细菌,逐渐形成一个个的“瘤子”,在这些根瘤里生长着千千万万的根瘤菌,它们能够大量地固定空气中植物不能直接利用的氮素,供给花生生长的需要.山东省早在五十年代即已运用,增产幅度10%左右,在生茬地上 Rhizobium fertilizer is biological nitrogen fixation science in agriculture, a new technology for the growth of nitrogen fixation, increase fertility and increase production.It is due to rhizobium increased peanut root bacteria, and gradually formed one by one “ Neoplasms ”where thousands of rhizobia grow and which are able to fix large amounts of nitrogen that plants can not directly utilize in the air for the growth of peanuts. Shandong Province was used as early as the 1950s to increase production Amplitude of about 10%, in the stubble field