Why can't raw pig manure be used directly

With the improvement of people's living standards, the demand for live pigs in the market has increased significantly, which has further promoted the large-scale and industrialized development of the pig industry. As the proportion of pig farming continues to increase, an inevitable problem is the pollution caused by pig manure. Pig manure is a good organic fertilizer, containing 15% organic matter, 0.5% nitrogen, 0.6% phosphorus, and 0.4% potassium. Pig manure has a low fiber content and high water content, so it decomposes slowly, but with sufficient stamina, it can effectively promote the growth of crops.
However, unfermented and decomposed pig manure has many hazards. Firstly, pig manure contains coliform bacteria, nematodes, insect eggs, and various bacteria. If unfermented and decomposed chicken manure is directly used in the soil, it will affect the respiration of crop roots, and is not conducive to seed germination and crop growth and development. Secondly, with the development of large-scale and industrialized pig breeding enterprises, pig feed contains a large number of heavy metals and trace elements, and direct use will affect the fertility of the soil, causing soil hypoxia and other situations. Unfermented and decomposed pig manure is characterized by strong fluidity, low solid content, and high content of antibiotics and heavy metals. Microbial fermentation of pig manure into organic fertilizer has become a key link in the treatment of pig manure.
Bioorganic fertilizer can greatly improve soil, improve the color, size, and taste of agricultural products, and promote the growth and development of crops. At the same time, the frequent use of organic fertilizer in agricultural production will greatly improve the ability of crops to adapt to the environment, reduce the incidence rate and improve the disease resistance of crops.
With the improvement of the technical level of the aquaculture industry, it has become a reality that pig manure is transformed into organic fertilizer through microbial fermentation. The organic fertilizer fermentation tank adopts the aerobic fermentation principle of aerobic microorganisms for the processing and production of organic fertilizer, enabling microorganisms to utilize the organic matter and residual protein in livestock and poultry feces and carcasses to rapidly reproduce under a certain temperature, humidity, and sufficient oxygen environment, thereby achieving harmless treatment for the processing and production of livestock and poultry waste organic fertilizer. The Bolong organic fertilizer fermentation tank not only reduces the cost of utilizing pig manure resources, but also benefits the return of pig manure to the soil after aerobic fermentation by aerobic microorganisms, thereby revitalizing the soil and promoting crop growth.
In summary, bio-organic fertilizers have a significant improvement effect on the disease resistance of crops. Fermented pig manure is rich in nitrogen, phosphorus, potassium, and other essential nutrients for plants. It is a high-quality organic fertilizer. It is of great significance to do a good job in the biological fermentation of pig manure.