Hermetia illucens compound amino acid fertilizer and preparation method thereof

Abstract

The invention provides a hermetia illucens compound amino acid fertilizer and a preparation method thereof.The preparation method comprises the steps that 1, smashing and drying dried hermetia illucens bodies, and stirring and mixing obtained powder and dried grape skin powder residues under hot air according to the mass ratio of (50-80): 1; (2) inoculating bacillus amyloliquefaciens Bt521 into aseed culture medium, and carrying out fermentation, so as to obtain a seed solution; (3) adding 50-60% of an obtained composite hermetia illucens powder into a fermentation medium; (4) inoculating 1-3% of the seed solution to the fermentation medium, and carrying out oscillation fermentation at 26-30 DEG C and 150-250 rpm for 72-78 h to obtain the hermetia illucens compound amino acid fertilizer;the prepared compound amino acid fertilizer has the advantages that the raw materials are rich in protein, the degradation rate of hermetia illucens is high, the fermentation period is short, the varieties of amino acids are rich, and the content of the amino acids can reach 0.32 mg / mL.

Description

technical field [0001] The invention relates to the technical field of microbial fermentation engineering, in particular to a black soldier fly compound amino acid fertilizer and a preparation method thereof. Background technique [0002] Amino acids can promote the growth of plant roots, strong seedlings and plants, enhance the photosynthetic function of leaves and the resistance of crops to diseases and insect pests, and have a significant effect on increasing production of various crops. However, the content of amino acids in natural soil is low, and the intake of amino acids in the soil by microorganisms and soil animals in the soil makes it difficult for plants to gain an advantage in the process of competing for amino acids in the soil. Therefore, many existing crops often need artificial fertilization to supplement the amino acids needed for crop growth. In the process of artificial fertilization, in order to make fertilizers efficient and pollution-free, high-protei...

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Problems solved by technology

[0004] However, due to the rapid reproduction of black soldier flies, the current process of using black soldier flies as high-protein substances and using microbial fermentation technology to obtain amino acid fertilizers often has slow and unstable protein hydrolysis, and undecomposed living organisms are prone to appear, and amino acids are hydrolyzed. Problems such as low content and long fermentation cycle

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