Rhodobacter strain, rhodobacter agent, and application of rhodobacter strain and rhodobacter agent

The invention provides a rhodobacter strain. The rhodobacter strain is the rhodobacter strain S2-1, and is preserved in the China Center for Type Culture Collection with a preservation number of CCTCC NO: M209239. The rhodobacter strain S2-1 is simple in production process, short in culture time and low in cost, and the strain can be prepared into a biological agent by a simple, quick and low-cost operation method. The biological agent can effectively prevent and control xanthomonas oryzae pv.oryzicola and xanthomonas oryzae pv.oryzae, and has the characteristics of long effective period, environmental friendliness, non-toxic to human and livestock, no harm to crops, simple and convenient application, low cost and so on. 本发明提供一种红细菌菌株，红细菌菌株为红细菌菌株S2-1，保藏于中国典型培养物保藏中心，保藏编号为CCTCC NO∶M209239，红细菌菌株S2-1的生产工艺简单、培养时间短、成本低，且该菌株可通过简单、快捷、低成本的操作方法制备得到生防菌剂，可有效防治细菌性条斑病和白叶枯病，并具有防效期长、对环境友好、对人畜无毒、对作物无药害、施用简单方便、成本低等特点。