Natural adsorption material compounded biological organic fertilizer and preparation method thereof

The invention belongs to the technical field of organic biological fertilizers, and discloses a natural adsorption material compounded biological organic fertilizer and a preparation method thereof. The biological organic fertilizer is prepared from the following components in parts by weight: 35-50 parts of organic fertilizer raw materials, 5-15 parts of microorganisms, 3-6 parts of biological compound enzyme, 15-36 parts of a natural adsorption material and 2-4 parts of a conditioning aid material, wherein the natural adsorption material comprises Cupressus lusitanica Mill. bark and ulva lactuca; and the conditioning aid material is mangosteen shells. The natural adsorption material in the biological organic fertilizer can effectively adsorb heavy metal ions in soil, so that the soil quality is improved, and the growth of crops is facilitated. The biological organic fertilizer disclosed by the invention can be suitable for any soil environment condition. The preparation of the biological organic fertilizer