The invention discloses application of
trichoderma xerophyllum to prevention and treatment of
plant root-knot nematodes, and belongs to the technical field of microorganisms, the
trichoderma xerophyllum is preserved in Guangdong Microbial Culture Collection Center, the number is GDMCC No: 66977, and the preservation address is No.100, Xianlie Middle Road, Xiaolian District, Guangzhou City, Guangdong Province. The preparation method of the
fungicide prepared based on the
trichoderma xerophyllum comprises the following steps: transferring the strain into a seed culture medium, and culturing on a shaking table at the temperature of 25-30 DEG C and the speed of 150-200r / min for 24-36 hours to obtain a
fermentation seed solution; inoculating the
fermentation seed solution into a
fermentation culture medium, and culturing for 72-96 hours on a shaking table at the temperature of 25-30 DEG C and the speed of 150-200 r / min to obtain a fermentation solution, namely the target
fungicide. The trichoderma xerophyllum has a remarkable lethal effect on root-knot nematodes, the fatality rate of fermentation liquor of the trichoderma xerophyllum on the root-knot nematodes exceeds 90%, the fatality rate of 80% or above can still be kept even if the trichoderma xerophyllum is diluted by 50 times, the trichoderma xerophyllum acts quickly, nematodes can be quickly killed within 12 hours, larvae are effectively prevented from invading plants, and the trichoderma xerophyllum shows a good application prospect in the field of prevention and treatment of the
plant root-knot nematodes.