The invention relates to a micro-capsulated suspended microbial seed
coating agent and a preparation method thereof. The micro-capsulated suspended microbial seed
coating agent comprises a functional
bacteria microcapsule and auxiliaries, wherein the functional
bacteria microcapsule is prepared from wall materials such as
sodium alginate and
gelatin by virtue of an endogenous
emulsion process, the grain size of the microcapsule is 20-60 mu m, the content of functional
bacteria is not lower than 10<9>cfu / g, and the
embedding rate is over 80%. Functional microbes are selected from two or more of
pseudomonas,
bacillus subtilis,
bacillus amyloliquefaciens,
enterobacter cloacae, raoultella planticola and
bacillus atrophaeus. The auxiliaries comprise one or more of a film-forming agent, a dispersant, a
tackifier, an anti-freezing agent and a coloring agent. The prepared functional bacteria microcapsule is uniformly mixed with the auxiliaries to obtain a finished product. The product has the advantages of good film-forming performances,
thallus persistence, high
survivability, good slow-
controlled release, strong application stability, environment friendliness, convenience in use, and the like, can be used for promoting seed
germination and
seedling growth of cottons, soya beans, wheat and potatoes, and the like, controlling the diseases at the
seedling stage, improving
stress resistance, and the like.