Carbon-based microbial agent for soil remediation as well as preparation method and application of carbon-based microbial agent

The invention discloses a carbon-based microbial agent for soil remediation as well as a preparation method and application of the carbon-based microbial agent, and relates to the technical field of soil remediation biological agents. The carbon-based microbial agent comprises the following components in parts by weight: 100-150 parts of compound microbial bacteria, 200-300 parts of a microbial agent culture medium, 400-500 parts of woody peat/plant ash, 40-60 parts of biomass ash, 100-150 parts of sodium humate and 30-40 parts of an amino acid nutrient solution, wherein the compound microbialbacteria comprise photosynthetic bacteria, bacillus, enzyme microorganisms and lactic acid bacteria. The carbon-based microbial agent has the beneficial effects that residual pesticides, hormones andinorganic nutrients in soil can be degraded, pollutants such as pesticides and toxic heavy metals in air and water sources are prevented from gathering in the soil, and absorption of heavy metal substances by plant root syste