Method for producing charcoal fertilizer

The invention belongs to the field of resource utilization of biomass, particularly relates to a method for producing a charcoal fertilizer by using an activating agent on the basis of human and animal excreta and forestry and agricultural residues, and aims to enhance the cellular performance and fertilizer efficiency of the charcoal fertilizer through the activating agent and overcome the defects that the human and animal excreta is difficult to process and conventional charcoal has insufficient fertilizer efficiency. The method comprises the steps as follows: the human and animal excreta, ground forestry and agricultural by-products and the activating agent are mixed uniformly according to a certain proportion; moisture content of a material is reduced to 30% below by using solar energy, wind energy or bioenergy; a mixture is placed in a pyrolysis material bin and then heated to the temperature of 150-200 DEG C, so that further dehydration is performed, and residual air in the material bin is removed; the material is carbonized at the temperature of 450-550 DEG C; and cooling is performed, so that a charcoal fertilizer product can be obtained. According to the method, compared with a charcoal fertilizer which is prepared without addition of the activating agent, cellular structures are increased by more than 25%, and the total amount of phosphorus and potassium which can be used by plants is increased by more than 20%.