Slow-release rice seedbed treating agent containing bactericidal active composition and application thereof

The invention discloses a slow-release rice seedbed treating agent containing a bactericidal active composition and application thereof. The bactericidal active composition is composed of an active component A and an active component B, the active component A is isotianil, and the active component B is pyraoxystrobin; wherein the weight ratio of the active component A to the active component B is1: 50-50: 1. The slow-release rice seedbed treating agent is prepared from asterilization composition with the weight content of 0.1 to 95 percent. According to the invention, isotianil and pyraoxystrobin are taken as active components, so that the bactericidal composition has very obvious synergistic interaction, the composition can obviously reduce the dosage of a medicament, and the dosage of the novel composition in a rice seedbed is 1/3-1/5 of that of a conventional pesticide. The sustained-release granules prolong the persistence of the pesticide, enable the pesticide effect to be continuously and stably exerted