The invention discloses a
matrine-
brassinolide suspension seed
coating agent which is used for
processing seeds, and a preparation method thereof. The content of
matrine is 0.01 to 80%, and the content of
brassinolide is 0.001 to 10%. The preparation method comprises following steps:
matrine,
brassinolide, a dispersant, an antifreezing agent, a
film forming agent, a filling material, a colouring agent, a pH conditioning agent and sufficient deionized water are added into a high shear
emulsion-dispersion
machine; the mixture is stirred uniformly, and is added into a sand mill for
grinding; an
aqueous solution prepared by the pH conditioning agent and a
thickening agent is added to adjust the pH value and
viscosity; and then the obtained solution is stirred uniformly and discharged so as to obtain the matrine-brassinolide suspension seed
coating agent. The matrine-brassinolide suspension seed
coating agent is mainly used for seed coating
processing of crops such as rice, wheat, corn, cotton, soybean, peanut, beet, and
sunflower before plantation; and possesses significant effects in preventing and curing underground injurious insects,
crop injurious insects, and soil born diseases, and promoting the growth of plants. The matrine-brassinolide suspension seed coating agent can be used for manual coating and mechanical coating, and is capable of saving time and labor. Environment
pollution caused by the matrine-brassinolide suspension seed coating agent and the application technology is less than that caused by seed coating agents of other dosage forms and other application technologies; and utilization ratio of pesticides is high.