Pesticide composition containing tefluthrin and sedaxane and preparation method and application thereof

The invention discloses a pesticide composition containing tefluthrin and sedaxane and a preparation method and application thereof. The pesticide composition comprises, by weight, 20-60% of tefluthrin and 5-15% of sedaxane. The preparation method comprises the steps of mixing tefluthrin and sedaxane to prepare seed treatment dispersible powder which has the advantages of being good in filming, uniform in coating, high in suspension rate, good in safety, low in toxicity and the like, and can be widely applied to the treatment of the seeds (yams) of wheat, corn, peanuts, potatoes and the like, the prevention of the infestation of grub, wire worm, flea beetle, leaf beetle and the like in the crops, and the blight, rot root, damping-off, loose smut, drooping disease, head smut and many other diseases in the seedling stage of the crops. Compared with the single tefluthrin and single sedaxane, the pesticide composition containing tefluthrin and sedaxane has an increased pest killing and anti-disease effects.