The invention discloses a method for preparing an environmental-protection
fertilizer from agricultural and
animal husbandry wastes, and belongs to the technical field of utilization of agricultural and
animal husbandry wastes. The environmental-protection
fertilizer is prepared by the steps: firstly, fermenting
livestock and poultry
feces, crushing
crop straw, carrying out sterilization treatmenton domestic garbage and fermenting, then stirring and mixing the fermented
livestock and poultry
feces, the crushed
crop straw, the domestic garbage
fermentation material,
earthworm manure and rottenleaf soil evenly, then sending the mixture into a high temperature aerobic
fermentation tank, fermenting, adding a bacterial solution blended by an
organic fertilizer fermentation agent, then inoculating the high-temperature aerobic fermentation tank, mixing evenly, then adding water to weighed
humic acid,
urea and
calcium superphosphate and diluting, mixing and stirring to obtain a
mixed solution, then adding to the high-temperature aerobic fermentation tank, fermenting for 20-28 days, after the fermentation is finished,
drying the fermentation product at the temperature of 45-65 DEG C,
drying to the
moisture content of 10% or less, deodorizing, crushing to pass through a 300-400 mesh
sieve, and thus obtaining the environmental-protection
fertilizer. The environmental-protection fertilizer effectively utilizes the agricultural and
animal husbandry wastes, has a wide range of sources, can avoid
soil compaction, and has the effect of loosening
soil texture.