The invention belongs to the technical field of microbial inoculants, and especially relates to a preparation method of a fungal inoculant for improving soil heavy
metal pollution. The preparation method of the fungal inoculant for improving soil heavy
metal pollution comprises the following steps: 1, activating bacterial fungal seeds; 2,
cutting mycelia to form small blocks; 3, transferring the small mycelia blocks into a corresponding
liquid medium, and carrying out shaking table oscillation dark culture to obtain a seed liquid of all the fungi; 4, uniformly mixing inoculant carriers according to a certain weight ratio, crushing and sieving the mixed inoculant carriers to obtain
powder, and carry out high temperature sterilization to obtain an inoculant carrier mixture; 5, adding the inoculant carrier mixture and
sterile water into a
fermentation tank in order to obtain a mixed medium; , inoculating the mixed medium with the seed liquid of all the fungi, and carrying out dark culture to obtain a
fermentation fungus liquid; and 7, filtering the
fermentation fungus liquid,
drying the filtered liquid, crushing the dried liquid, and packaging the crushed dried liquid to obtain the fungal inoculant. The preparation method of the fungal inoculant for improving soil heavy
metal pollution has the advantages of scientific property and low cost, and the prepared fungal inoculant has a substantial
fertilizer effect, can effectively avoid heavy metal invasion of
plant roots in soil, and improves the quality of the soil.