Seed coating is a process in which seeds are used as carriers, seed coating agents are used as raw materials, coating machines are used as means, and a drug film is uniformly coated on the surface of seeds according to the colloidal chemical stability and polymer polymerization film-forming principle. It is a comprehensive seed treatment high-tech integrating biological, chemical and mechanical achievements.
According to the thickness and shape of coating, seed coating can be divided into pelleted seeds and coated seeds. Pelleted seeds are usually made into spherical seed units with no obvious difference in size and shape to meet the needs of precision sowing. The shape of coated seeds is similar to the original seed unit, and the shape and weight have little change.