Brachybacterium 401 and application thereof

The invention provides blue-like bacteria 401 and application thereof, and belongs to the technical field of biological control, the blue-like bacteria 401 is preserved in Guangdong Microbial Culture Collection Center, and the preservation number is GDMCCNO: 63188; the cyanobacteria 401 is obtained by separating and screening from the root of the smooth vetch; the bacteriostasis rate on banana fusarium oxysporum reaches 71.00% +/-1.77%; the cyanobacteria 401 can induce obvious swelling, branch increase, hypha roughness, malformation and cross-linking deformation of TH4 hyphae; the tips of the hyphae expand and are bubble-shaped; hyphae expand in the middle; the number of spores is increased, the surfaces of the spores are rough, deformed and sunken, and hyphae are broken; the bacillus subtilis also has certain growth promoting potential and has the capabilities of dissolving inorganic phosphorus, fixing nitrogen and producing siderophores; in addition, the blue-like bacteria 401 do not have a pathogenic effec