The role of biogas residue in agricultural production

The biogas residue is composed of partially undecomposed raw materials and fresh microbial cells. It contains more biogas slurry and the solid mass fraction is below 20%. This is the reason why the biogas residue has the effect of biogas slurry in the comprehensive utilization process. The biogas residue consists of three different components and has three different functions.
One is organic matter and humic acid, which is a good soil improver. Long-term use of biogas fertilizer can loosen the soil, is conducive to soil microbial activity and the formation of soil aggregate structure, significantly improves soil fertility, and has a positive effect on promoting crop yield increase. It can improve physical properties such as soil porosity and soil density. As the amount of biogas fertilizer increases, the soil density decreases, the total porosity increases, and the depth of the living soil increases, thereby significantly improving the physical physiology of the soil and creating good soil conditions for land cultivation and crop growth. ;
Second, it contains organic matter, humic acid, crude protein, total nitrogen, total phosphorus, total potassium, and also contains some other mineral components, which are high-quality fertilizers that can meet the growth needs of crops;
The third is the unripe raw materials, which are then fermented into the shed to release the fertilizer, which is one of the reasons for the efficiency of the biogas residue.