The invention relates to a preparation method of
amino acid-containing biological bacterial
fertilizer, and belongs to the technical field of biological fertilizers. The method comprises the followingsteps of S1, uniformly mixing fruit and vegetable wastes, an organic
carbon source and water, and performing sealed
fermentation at the temperature of 28-32 DEG C for 25-35 days to obtain a fermentedmaterial A; S2, performing
solid-liquid separation treatment on the fermented material A obtained in the step S1 to obtain
enzyme liquid; S3, weighing an organic
nitrogen source to perform boiling treatment, and then performing cooling to the normal temperature; and S4, adding the cooled organic
nitrogen source obtained in the step S3, a
bacillus megaterium live
bacteria preparation and a brevicompactum live
bacteria preparation into the
enzyme liquid obtained in the step S2, performing mixing, and performing sealed
fermentation for 7-10 days to obtain the
amino acid-containing biological bacterial
fertilizer. According to the method,
raw material components are simple and easy to obtain, operation is convenient, the prepared
amino acid-containing biological bacterial
fertilizer has relatively high
amino acid content and is rich in
nutrient substances such as organic matters, trace elements and the like, and the
crop yield can be effectively improved.