▎ 摘　　要

NOVELTY - Fungicide is prepared by (a) taking graphite as electrode in electrolyte containing amino acid, electrolyzing graphite and stripping to amino graphene oxide, centrifuging electrolyzed solution and layering, and taking upper-layer solution to obtain graphene oxide dispersion solution, (b) adding surfactant having aromatic ring to graphene oxide dispersion solution, uniformly dispersing, and adding water for dilution to obtain diluted dispersion solution, and (c) adding trifloxystrobin and tebuconazole to dispersion solution, and performing ultrasonic treatment to obtain fungicide. USE - The fungicide is used for preventing Dendrobium anthracnose. ADVANTAGE - The fungicide improves the dispersibility of trifloxystrobin and tebuconazole in water, and improves the combination of trifloxystrobin and tebuconazole with amino graphene oxide, and exhibits synergistic effect when killing. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method of using fungicide, involving using fungicide for spraying 10-40 g per mu.