Plant-derived pesticide preparation for preventing and controlling paddy rice blast and preparation method thereof

The invention relates to the technical field of microorganisms and discloses a plant-derived pesticide preparation for preventing and controlling paddy rice blast and a preparation method thereof. The plant-derived pesticide preparation is composed of a spore suspension of actinomycetes resisting Magnaporthe oryzae and traditional Chinese medicine extract. The traditional Chinese medicine extract is mixed extract of coptis root, rhizoma anemarrhenae, moutan bark, bark of Cinnamomum wilsonii Gamble, radix peucedani, ternate buttercup root and acanthopanax root. The invention provides traditional Chinese medicine extract for improving actinomycete prevention effects on Magnaporthe oryzae. Through combination of the traditional Chinese medicine extract and actinomycetes resisting Magnaporthe oryzae, antagonistic actinomycete prevention effects are improved, a chemical pesticide is avoided, environmental friendliness is guaranteed, and toxic and side effects are avoided. Compared with actinomycetes, the plant-der