Amino acids have three roles in plant growth:
1) Supplementary sources of organic nitrogen nutrients;
2) A chelating agent for metal ions. Amino acids have the function of complexing (chelating) metal ions, and it is easy to carry the medium and trace elements (calcium, magnesium, iron, manganese, zinc, copper, molybdenum, boron, selenium, etc.) required by plants into plants. Improve the utilization of various nutrients by plants;
3) Enzymatic preparations. Amino acids are promoters and catalysts for the synthesis of various enzymes in plants and play an important role in plant metabolism. However, amino acids are easily assimilated and decomposed by bacteria in the soil, so it is not suitable to be applied as a base fertilizer in the soil. Instead, it is made into a foliar fertilizer, which is sprayed on the leaves to allow plants to directly absorb amino acids and other elements through the leaves.