黑龙江省土壤土著大豆根瘤菌的数量变化范围在３～１００００个／ｇ鲜土，受种植年限和土壤质地等因素的影响，黑土土著菌数明显的高于其它土类。在寄主植物大豆生长时期，土壤中根瘤菌数量在一定的幅度内波动变化，即存在着土壤载菌量的问题。寄主植物存在与否对黑土和白浆土的载菌量有明显的影响，而对风沙土和草甸土影响不大。接种菌Ｂ１６１１ＣＳｔｒ＋、Ｒｉｆ＋、Ｇｅｎ＋在黑土中的生存定殖能力强于在白浆土，在风沙土和盐碱土上最弱。 The amount of soil indigenous soybean rhizobia in Heilongjiang Province varied from 3 to 10000 per g fresh soil, influenced by planting years and soil texture. The number of indigenous black soil was significantly higher than that of other soils. In the host plant soybean growth period, the amount of rhizobium in the soil fluctuated within a certain range, that is, there was a problem of soil loading capacity. The presence or absence of host plants has a significant impact on the carrying capacity of black soil and albic soil, but has little effect on aeolian sand and meadow soil. Inoculation bacteria B1611CStr +, Rif +, Gen + in black soil survival colonization ability is stronger than in white soil, the weaker in sandy soil and saline soil.