The present invention relates to
bacillus amyloliquefaciens and a preparation method of a microbial inoculum of the
bacillus amyloliquefaciens, and belongs to the field of bio-pesticides and
plant protection. The
bacillus amyloliquefaciens HN-11 is isolated from azadirachta indica tree
rhizosphere soil, azadirachta indica residue is used as a medium
raw material and a microbial inoculum adsorption carrier for secondary
solid state
fermentation composting to prepare the microbial inoculums, the microbial inoculums comprises an
arbitrary content of the bacillus amyloliquefaciens, 0 to 30% of the azadirachta indica residue, 4 to 12% of the soybean
powder, 5 to 25% of wheat
bran, 30-50% of
peat, 1-5% of KCl, 0.5 to 2% of
urea and 1 to 8% of a surfactant. Tests show that the microbial inoculum can overcome the problem of
seedling injury caused by direct use of the azadirachta indica residue, can expand the control spectrum, has obvious integral
control effect on banana wilt and Radopholus similes Thorne, can also promote
plant growth, and the field
control effect on the banana wilt can reach 96.2%. The microbial inoculum has great significance to the promotion of integral
pest control and agricultural and sideline
product recycling, and has broad application prospects in the production practice.