Chinese farmers have a tradition of using organic fertilizers and attach great importance to their use. In the United States, Western Europe, and Japan, there is a growing trend of "ecological agriculture" and "organic agriculture", which places great emphasis on the use of organic fertilizers and designates them as the main source of fertilizer for producing green food.

One important aspect of using organic fertilizers is that they increase the organic matter in the soil. Although the content of organic matter only accounts for a fraction of the total amount of cultivated soil, it is the core component of soil and the main material basis of soil fertility. Organic fertilizers have a significant impact on soil structure, nutrients, energy, enzymes, moisture, aeration, and microbial activity. Organic fertilizers contain a large amount of nutrients that plants need, and their nutrient supply to plants is relatively gentle and long-lasting, with long-lasting effects.

Organic fertilizers also contain various trace elements. Due to the complete variety of nutrients in organic fertilizers, and the fact that these substances are completely non-toxic, harmless, and pollution-free natural substances, this provides conditions for the production of high-yield, high-quality, and pollution-free green food. Organic fertilizers contain various sugars, and the application of organic fertilizers increases the levels of various sugars in the soil. With sugars and the large amount of energy released during the degradation of organic matter, the growth, development, and reproductive activities of soil microorganisms have energy. Animal manure contains various active enzymes secreted by the digestive tract of animals, as well as various enzymes produced by microorganisms. The application of organic hypertrophy greatly enhances soil enzyme activity, which is beneficial for improving soil absorption, buffering, and stress resistance. The application of organic fertilizers increases the organic colloids in the soil, binding soil particles together to form a stable aggregate structure, improving the physical, chemical, and biological properties of the soil, and enhancing its water retention, fertilizer retention, and air permeability. Create a favorable soil environment for plant growth.  

Organic fertilizers decompose and transform into various humic acid substances in the soil. It can promote enzyme activity, substance synthesis, transportation, and accumulation in plants. Humic acid is a high molecular weight substance with high cation exchange capacity and excellent chelating adsorption properties. It has a good chelating adsorption effect on heavy metal ions, which can effectively reduce the toxicity of heavy metal ions to crops and prevent them from entering plants. This is very beneficial for producing pollution-free and hygienic green food. However, the use of organic fertilizers also has drawbacks such as low nutrient content, difficulty in decomposition, and inability to meet the requirements for high crop yields in a timely manner.

The traditional production and use of organic fertilizers are also very inconvenient. Organic waste such as human and livestock manure and garbage is a type of dirty, rotten, and odorous substance, which contains many pathogenic microorganisms or mixed with certain toxins, and is an important source of pollution. It is particularly noteworthy that with the development of modern animal husbandry, the application of feed additives is becoming more and more widespread. Feed additives often contain a certain amount of heavy metals, which are discharged with animal manure and can seriously pollute the environment, affecting human health.