Chaetomium sp. Strain SGSF767 and application thereof in prevention and treatment of plant diseases

The invention discloses a chaetomium sp. Strain SGSF767 and application thereof in prevention and treatment of plant diseases, and belongs to the technical field of prevention and treatment of plant diseases. In order to solve the problems that an effective green prevention and control method for preventing and controlling the root knot nematode disease is lacked and the like, a fungus SGSF767 is separated from litters under the forest of the great khingan, and the strain is found to be a new strain which is not researched in chaetomium through identification. The PDB fermentation liquor of the strain SGSF767 has insecticidal activity on root-knot nematode. In addition, the fermentation extract of the strain SGSF767 also has anti-plant pathogenic bacterium activity and anti-plant pathogenic fungus activity, and has a bacteriostatic effect on Ralstonia solanacearum, Pseudomonas syringae, Xanthomonas oryzae var. Oryzae and Rhizoctonia solanacearum. The chaetomium sp strain SGSF767 can be used as a potential bio