Is fish protein fertilizer a high-nitrogen fertilizer?

Yes, fish protein fertilizer is classified as a high-nitrogen fertilizer, though it differs from traditional chemically synthesized high-nitrogen fertilizers.

Fish protein fertilizer is an organic fertilizer produced through the specialized enzymatic hydrolysis of waste materials from aquatic products such as fish and shrimp. It contains a wealth of organic components-including amino acids, various trace elements, and bioactive substances-and is characterized by a comprehensive nutrient profile, stable fertilizing efficacy, and safety for the environment.

Nitrogen is an essential element for plant growth and a common nutrient in fertilizers. Fish protein fertilizer typically has a nitrogen content exceeding 5%, with organic nitrogen accounting for a significant proportion of this total. Therefore, based on its nitrogen content, fish protein fertilizer can be categorized as a high-nitrogen fertilizer.