The water content of the purified Stevia leaf residue is high, and it has good fermentation conditions. It is simple and practical to produce organic fertilizer by direct composting.
After the stevia leaf residue is collected, it is directly transferred to the fermentation tank and piled up at an appropriate height to ensure a certain temperature. Regularly check the temperature of the center of the leaf residue pile, and often use the compost turning machine to turn the pile to ensure uniform maturity, so as to avoid excessive temperature and inhibit the maturity process. After a certain period of decomposition, the volume of the leaf residue pile is reduced, and it can be used as fertilizer when the pile temperature is reduced.
If the sugar content of stevia leaf residue is high, it will cause excessive acidity in the natural composting process, making it difficult for microorganisms to multiply and survive, so the composting effect is extremely poor, so an appropriate amount of buffer salt should be added during the composting process to reduce composting In the acidity.
Compound microbial fertilizer
Compound microbial fertilizer is the product of scientifically combining organic fertilizer with microbial fertilizer, inorganic NPK fertilizer, micro-fertilizer, etc., using modern comprehensive microbial technology. It is a new multi-effect compound fertilizer. It has comprehensive nutrients, a combination of long-term and quick-acting effects. After being processed by the fertilizer granulator, it can increase fertilizer utilization, improve soil structure and physical and chemical properties, mediate the microbial environment, and improve soil fertility. It has become a new type of planting industry application. One of the fertilizers, especially cash crops, will be applied more and more.
The method of processing stevia leaf residue into compound microbial fertilizer:
Stevia rebaudiana leaf residue was mixed with N, P, K and other nutrient elements after decomposition promotion treatment and microbial aerobic fermentation, and inoculated with high activity functional bacteria. Compound biological fertilizer was made by NPK production line.