Future prospects for the use of amino acid fertilizers

Publish：1 Time：2013-10-18 hits：203次

Amino acid fertilizers produced by hydrolysis or fermentation contain a large amount of small molecule organic compounds, so using them as chelating agents to develop new multifunctional fertilizers has achieved rapid development. More research has been conducted on the chelation of amino acid trace elements. Inorganic micro fertilizers have poor absorption and biochemical functions, are easily fixed by the soil, and there is a significant antagonistic effect between trace elements, with low utilization efficiency and difficulty in meeting the needs of plant growth; The cost of using EDTA, citric acid, tartaric acid, and other chelating agents to produce chelated micro fertilizers is very high. Multiple micronutrient fertilizers containing Mo, Zn, Cu, Fe, Mn, etc. have been prepared, which have the characteristics of resisting interference, alleviating the antagonistic effect between metal ions, good chemical stability, and being easily absorbed and utilized by plants. In addition, amino acids that have lost metal ion reduction also have nutritional effects and are high-quality nitrogen fertilizers that promote plant growth. Amino acid chelated micronutrient fertilizer is currently the most ideal micronutrient fertilizer for crop growth, and has been applied as a new type of fertilizer in agricultural production. At present, there are products that combine amino acid pesticides and fertilizers, which can not only fertilize but also kill insects and sterilize. Therefore, conducting systematic research on the functions of amino acid fertilizers, unleashing their potential, improving their utilization efficiency and biological efficacy is a requirement for ecological agriculture, and an inevitable trend for sustainable agricultural development.
Amino acid fertilizers produced through hydrolysis or fermentation are fertilizers mainly composed of composite amino acids, which contain sugars, proteins, bacterial cells, and other metal ions. There are studies indicating that the fertilizer efficiency of mixed amino acids is greater than that of single amino acids. Some amino acid groups composed of single amino acids with good fertilizer efficiency still have high fertilizer efficiency, while some amino acid groups composed of amino acids with poor fertilizer efficiency still have low fertilizer efficiency. It is believed that there is still a problem with selecting the optimal amino acid composition. When using protein hydrolysis or fermentation products as amino acid fertilizers in practice, it is generally a mixture of amino acids. However, different processes and waste liquids containing different amino acids have different types and concentrations of amino acids, resulting in differences in fertilizer efficiency for the same crop. Therefore, there is also a problem of optimal selection. How to further optimize the composition and structure of fertilizers according to crop needs, adjust the proportion of each component to balance each other, and make the produced varieties diversified and specialized, should be explored and tested in practice.
In summary, continuous research on the hydrolysis or fermentation of agricultural waste to produce amino acid fertilizers and their applications has opened up more and more new sources of raw materials, providing new scientific basis for the scientific development and application of amino acid fertilizers. Due to the wide variety of raw materials and processes used in the production of amino acid fertilizers, as well as their comprehensive and complex composition, the production and application research of amino acid fertilizers is a complex system engineering that involves disciplines such as chemistry, chemical engineering, biochemistry, soil nutrition, and plant physiology, with extremely broad development space.