Fuente: WIPO "tobacco agriculture" The invention discloses Achromobacter delichei 79A6 for preventing and treating tobacco bacterial wilt and an application of the Achromobacter delichei 79A6. The preservation number of the Achromobacter delichei strain 79A6 is CCTCC (China Center for Type Culture Collection) No: M 20211382. The disease control mechanism of the strain 79A6 is different from that of the existing bacterial wilt antagonistic bacteria, and diseases can be prevented through ecological niche competition, plant disease resistance induction, rhizosphere microflora regulation and other mechanisms, which indicates that the strain 79A6 plays a role in disease control and does not mainly generate antibiotics, and the strain 79A6 has better safety when applied.