The invention provides a
pesticide composition for preventing and treating
Chinese chive maggots, and belongs to the field of pesticides. The effective components of the
pesticide composition comprise chlorfluazuron and
chlorfenapyr, the weight ratio of chlorfluazuron to
chlorfenapyr is (1: 12)-(10: 3); the
chlorfenapyr is subjected to double-layer
coating with
chitosan and
tannic acid, the
tannic acid is an inner
coating layer, and the
chitosan is an outer
coating layer; the chlorfluazuron adopts
fucoidan-
polylactic acid double-layer coating,
polylactic acid is an inner coating layer, and
fucoidan is an outer coating layer. The
pesticide composition disclosed by the invention takes chlorfluazuron and chlorfenapyr as effective components, the chlorfluazuron and chlorfenapyr show a remarkable synergistic effect in a specific proportion, and compared with a
single agent, the pesticide composition has the advantages that the
control effect on
Chinese chive maggots is effectively improved, so that the dosage and the
medication frequency of the pesticide are reduced, and the adverse influence of the pesticide on the
ecological environment is reduced. Besides, the chlorfluazuron and the chlorfenapyr are both coated by specific double
layers, so that the persistence of the chlorfluazuron and the chlorfenapyr is improved, and the stability and the targeted delivery effect of the chlorfluazuron and the chlorfenapyr are enhanced under the condition that the pesticide effect is not reduced.