Compound amino acid fertilizer a fertilizer containing amino acids. There is no national standard. Amino acids, as the smallest molecules of protein, exist in fertilizers and are easily absorbed by crops. It also has the function of improving disease resistance and quality of fertilization crops. It can supplement the essential amino acids of plants, stimulate and regulate the rapid growth of plants, promote the robust growth of plants, and promote the absorption of nutrients. Enhance the metabolic function of plants, improve photosynthesis, promote the development of plant roots, accelerate plant growth and reproduction.