Bio-organic fertilizer produced by recycling straws and preparation method thereof

The invention discloses a bio-organic fertilizer produced by recycling straws and a preparation method thereof, and relates to the technical field of agricultural fertilizer; the bio-organic fertilizer is prepared by mixing granulation of 29-39 parts by weight of agricultural crop straws, 29-49 parts by weight of poultry and livestock manure, 10-20 parts by weight of grass peat, 0.5-1.5 parts by weight of microbial bacteria, 2-6 parts by weight of urea, 1-3 parts by weight of potassium chloride, 1-3 parts by weight of monoammonium phosphate, and 0.5-1.5 parts by weight of a medium-trace element; the bio-organic fertilizer has the characteristics of rapid fermentation, lower production cost, stronger biological activity, high fertilizer efficiency, wide sources of the raw materials and the like, can be used as a paddy rice fertilizer, but also can be used as a fertilizer for dry grains, vegetables, melons and fruits and fruit trees, and also can be used as a fertilizer for flowers and plants.