Biological organic fertilizer as well as preparation system and preparation method thereof

The invention relates to an organic fertilizer, in particular to a biological organic fertilizer as well as a preparation system and a preparation method thereof, and the method comprises the following steps: step 1, placing a coating film on a supporting bottom plate and two sliding side plates; 2, placing the mixed biological organic fertilizer raw materials in the middle of the coating film. 2, the two folding side plates fold the side edges of the wrapping film, the side edges of the wrapping film are turned to the middle of the wrapping film, and wrapping of the biological organic fertilizer raw materials is completed; the invention relates to a biological organic fertilizer. The biological organic fertilizer comprises the following components in parts by weight: 1-2 parts of probiotic stock solution; 12 to 16 parts of a nutritional agent; 14 to 15 parts of bran coat; 22 to 26 parts of poultry manure; 18 to 24 parts of stem leaves; and 16 to 18 parts of sawdust and wood chips. The organic fertilizer can