通过盆栽与田间试验，对大豆根瘤菌与光合细菌混合接种进行了研究。结果表明，混合接种提高了大豆根瘤的固氮酶活性和土壤固氮强度；增加了土壤好气性细菌、真菌、放线菌、固氮菌的数量；减轻了大豆胞囊线虫危害。混合接种的产量和纯根瘤菌接种，纯光合细菌接种的比较，盆栽试验分别达显著与极显著水平，田间试验均达显著水平 Through pot and field experiments, mixed inoculation of soybean rhizobium and photosynthetic bacteria were studied. The results showed that the mixed inoculation increased nitrogenase activity and soil nitrogen fixation strength of soybean nodules, increased the amount of aerobic bacteria, fungi, actinomycetes and azotobacter and alleviated the hazard of soybean cyst nematode. The yield of mixed inoculation and pure rhizobial inoculation, pure photosynthetic bacteria inoculation comparison, pot experiment were significantly and extremely significant level, the field test reached a significant level