NOVELTY - Culture medium comprises aggregate of microorganisms carrier containing porous material and/or powdery carbide, where the carrier is mixed with natural soil.    USE - For carrying out organic agriculture of agricultural products.    ADVANTAGE - The culture medium has excellent water retention and water permeability and adsorptivity, reduces agrochemical or chemical fertilizer, increases crop yield, prevents replant failure, prevents putrefaction, prevents generation of disease insect, homogenization of soil can be performed, and high quality and safe agricultural products with good flavor can be produced in large quantities.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) agricultural method, involves use of culture medium comprising mixture of natural soil, porous material and/or powder carbide material, which has the carrier microorganism;    (2) liquid fertilizer system (1) for manufacturing liquid fertilizer used in organic culture of agriculture products, comprising adjustment tank (11) for diluting organic waste with water, multiple aerators connected downstream of the adjustment tank, where the porous material with the microorganisms is accommodated internally and which are connected to a serious for carrying out aeration processing of the sludge water produced by the adjustment tank, reaction tank connected downstream of aerators, for accommodating a porous material with microorganisms interior and for carrying out the trickling filtration of the sludge water from the aerator, where a portion of sludge water passes through the reaction tank is used as liquid fertilizer and the remainder is returned to the adjusting tank;    (3) preparation of lipid fertilizer used in organic agriculture of agricultural products, involves introducing organic waste into an adjustment tank and diluting the waste with water, allowing the sludge water generated by the adjustment tank into an aerator and carrying out aeration processing, carrying out trickling filtration of the sludge water from the aerator; and    (4) agricultural method for carrying out organic agriculture of agricultural products, involves use of the above-mentioned culture medium, contacting the culture medium with the route of embed agriculture products, providing the liquid comprises to the culture medium and/or the agricultural products.    DESCRIPTION OF DRAWING(S) - The figure is a schematic view representing the liquid fertilizer manufacturing system. (Drawing includes non-English language text)    Liquid fertilizer manufacturing system (1)    Adjustment tank (11)    First aerator (21)    Second aerator (22)    Third aerator (23)