Eugenol biological pesticide and preparation method thereof

The invention discloses a eugenol biological pesticide which comprises the following ingredients in percentage by weight: 0.1% to 70% of eugenol, 6% to 20% of surfactant, 0.01% to 0.5% of plant immunity regulator, 10% to 50% of synergist, and raw materials of alcohol and turpentine for the rest part. With the advantage of reasonable formula, the eugenol biological pesticide is characterized in that the active volatility of the active ingredient eugenol is improved, the pesticide effect of the eugenol is enhanced, pesticide doses are reduced, and the pesticide cost for farmers is reduced; pureplant solvents are used in the eugenol biological pesticide which belongs to low-carbon and environment-friendly pesticide, so pollution and harm to the environment are reduced, and the eugenol biological pesticide is safe and environment friendly for use. The eugenol biological pesticide is used for preventing and treating powdery mildew, botrytis and downy mildew and regulating plant immunity, and has the effects of synergy, simultaneous treatment, resistance prevention, resistance delay, etc.