花生是世界上,同时也是我国重要的油料作物,为了提高花生的生产水平,同时也为了改良田间土壤供氮状况,选择和利用根瘤菌进行花生大田接种,不仅在研究领域一直吸引着国内外专家的兴趣,而且也已经在生产实践上带来了重大的经济效益〔2〕。然而,如同其他豆科作物-根瘤菌共生体系一样,花生固氮潜力的充分发挥,受到众多因子的影响。除了环境和微共生体(Microsymbionr)及根瘤菌因子 Peanut is the world’s most important oilseed crop. In order to improve the production level of peanut and to improve the status of soil nitrogen supply in the field, peanut selection and utilization of rhizobium for peanut field inoculation has not only attracted domestic and foreign experts in the field of research Interest, but also in the production has brought significant economic benefits [2]. However, like other leguminous crops - Rhizobium symbiosis, the potential for fixing nitrogen in peanuts is fully exerted and is influenced by many factors. In addition to the environment and micro-Symbiosis (Microsymbionr) and rhizobium factors