Insecticide-fertilizer granule containing pyriftalid and bensulfuron methyl and preparation method and application of granule

The invention discloses an insecticide-fertilizer granule containing pyriftalid and bensulfuron methyl and a preparation method and application of the granule. The insecticide-fertilizer granule is prepared from, by weight, 0.1-20% of pyriftalid, 0.01-10% of bensulfuron methyl, 50-95% of fertilizer, 1-30% of humic acid, 0.1-40% of auxiliary and the balance filler. The insecticide-fertilizer granule can be used for controlling and eliminating weeds in paddy fields. The insecticide-fertilizer granule scientifically combines pyriftalid, bensulfuron methyl and fertilizer, a user can control and eliminate weeds in the paddy fields and conduct topdressing by using the granule once in agricultural production, the situation that pesticide application and fertilizer application cannot be taken into consideration together in the prior art is avoided, production efficiency is improved, and labor cost is reduced. The ratio of pyriftalid to bensulfuron methyl in the insecticide-fertilizer granule is reasonable, the weed control spectrum is widened, and the overall weed control effect is good. The preparation method of the insecticide-fertilizer granule is simple in process and low in production cost.