The invention discloses a
plant bactericide and a preparation method thereof, and relates to the technical field of bactericides. Comprising the following components: 30-40 parts of
plant source extract nano microcapsules, 5-8 parts of a nano carrier, 3-6 parts of a composite synergist, 4-6 parts of
dextran, 1-3 parts of
eugenol, 4-8 parts of hydroxypropyl trimethyl
ammonium chloride chitosan, 3-5 parts of an auxiliary agent, 50-60 parts of
ethanol, 100-150 parts of water and 3-5 parts of an emulsifier. The
plant source extract is prepared by extracting the following raw materials in parts by weight: 10-20 parts of peach pit green
tangerine peel, 8-15 parts of Chinese prickly ash, 4-6 parts of radix sophorae flavescentis, 3-5 parts of
ginkgo leaves, 3-5 parts of garlic, 5-8 parts of
eucalyptus leaves and 3-5 parts of
sophora alopecuroide. The plant bactericide has the advantages of obvious
bactericidal effect, low
drug resistance risk and good field
control effect.