Belonging to the technical field of
pesticide preparations, the invention provides a targeted sustained-release nano-
pesticide preparation for
aphid control, a preparation method and application thereof. The preparation method includes: taking tripolyglycerol monostearate, P(HB-HO), an
aphid control
pesticide, PVA and
aphid sex
pheromone as the raw materials; dissolving tripolyglycerol monostearate, P(HB-HO) and the aphid control pesticide in an organic phase in order; dissolving PVA into a PVA
aqueous solution of certain concentration, mixing the PVA
aqueous solution with the organic phase, and conducting
high pressure homogenization to form an
emulsion, performing full stirring to volatilize the organic phase, subjecting the
emulsion to high speed
centrifugation, discarding the supernatant, and collecting the precipitate; dissolving the aphid sex
pheromone in
anhydrous ethanol, performing mixing with the collected precipitate, conducting impregnation adsorption, and carrying out highspeed
centrifugation to collect the precipitate, and performing
freeze drying, thus obtaining the targeted sustained-release nano-pesticide preparation. The preparation obtained by the method provided by the invention has the characteristics of uniform
particle size distribution, good
dispersity and good sustained release performance, has active targeted luring and poisoning effects on aphids, can improve the pesticide
efficacy, also can reduce the
pollution of pesticides to the environment and the harm to non-target organisms, and reaches the purposes of active luring and killing of target pests.