Dedicated suspended seed coating agent for wheat

The invention relates to a dedicated suspended seed coating agent for wheat. The dedicated suspended seed coating agent is prepared from the following raw materials in percentage by weight: 5-10% of imidacloprid, 1-3% of propiconazole, 7-12% of thiram, 0.005-0.1% of brassinolide, 1-2.5% of a film-forming agent, 1-2.5% of a wetting dispersant, 1-1.5% of a preservative, 5-10% of a filler, 1-1.5% of an alarming colouration material, 1-5% of an anti-freezing agent, 0.5-1% of a deoaming agent and the balance of water. According to the seed coating agent, imidacloprid, propiconazole, thiram and brassinolide are compounded to be used as effective constituents, and the advantages of the four effective constituents are complementary; the seed coating treatment before sowing can effectively and comprehensively prevent and control the take-all disease of wheat, banded sclerotial blight, smut, wheat aphid and soil insects in the seedling stage, reduces the pesticide dosage and the types and times of usage in the wheat production process, reduces the pollution, improves yield and quality of the wheat, achieves good economic benefits and ecological benefits, and can be widely applied to agricultural extension.