The application discloses an environment-friendly biological
organic fertilizer for improving acidified soil and a preparation method thereof, and belongs to the technical field of
organic fertilizer. The biological
organic fertilizer is prepared from the following raw materials in parts by weight: 10-20 parts of composite gel material, 80-100 parts of mature
poultry manure, 10-20 parts of
microbial agent, 30-50 parts of modified waste
tea leaf biochar, 10-15 parts of
urea, 5-10 parts of
humic acid, 1-5 parts of superphosphoric acid
calcium, and 1-5 parts of
sodium carboxymethyl cellulose; the
microbial agent is prepared by mixing
bacillus firmus,
pseudomonas plecoglossicida and
azotobacter chroococcum at a volume ratio of 1:1:1. The biological organic
fertilizer can significantly improve the
soil pH, increase the content of
organic matter in the soil, has good buffering capacity and long-
term effect, and can enhance the water and
fertilizer conservation capacity of the soil, and has a remarkable effect on increasing the yield and income of crops.