The invention relates to a seed
coating formulation and a preparation method thereof, in particular to a
water dispersible granule seed
coating formulation and a preparation method thereof, and mainly solves the problems of low seed
coating ratio and high possibility of stripping off of the seed coating of the conventional seed coating formulation. The
water dispersible granule seed coating formulation comprises a bactericide, an insecticide, a dispersing agent, a
wetting agent, a disintegrating agent, a film-forming agent, a colouring agent and a carrier, wherein the bactericide is one or more of
fludioxonil, amisulbrom, ipconazole,
carbendazim,
thiram and
tebuconazole; the insecticide is
chlorpyrifos and / or
sophocarpidine; the preparation method comprises the following steps: premixing and coarsely
grinding the raw insecticide, the raw bactericide, the dispersing agent, the
wetting agent, the disintegrating agent and the carrier through a universal
pulverizer, and then smashing through a
jet mill, so as to obtain a
powder mixture; spraying the mixed liquor of the colouring agent, a binder, the film-forming agent and water into the
powder mixture, after kneading, leaving the material to stand, extruding, granulating and
drying, so as to obtain the
water dispersible granule seed coating formulation. The water dispersible granule seed coating formulation can be used for
crop seed coating.