1. Human fecal urine added superphosphate. Add 2.5 kg of superphosphate per 50 kg of human waste, mix well and store for 5-7 days. It can convert ammonium carbonate, which is highly volatile in human excreta and urine, into stable ammonium phosphate, and increase phosphorus in human excreta and improve fertilizer quality. 2. Human fecal urine added superphosphate and salt. In 50 kg of human excrement, 5 kg of superphosphate and 2.5 kg of salt were added, mixed well, and fermented for 7 days. When used, water was added 3 times. This method can prevent loss of nitrogen, increase the amount of phosphorus, but also improve fertilizer utilization. 3. Human urine added gypsum powder. For every 50 kg of human waste, add 5 kg of cooked gypsum powder, add 25 kg of water, mix well, and cover for 10 days before use to reduce nitrogen volatilization. 4. Ash added superphosphate. For every 3 kg of grass ash, add 50 kg of water. After immersing for 6 hours, take the filter solution for use. Take another 1 kg of superphosphate powder, add water and mix well. After the precipitation, take the filtrate. The two solutions were then mixed and sprayed with 50 kg of water to spray 667 square meters of field and obtain the same fertilizer effect as potassium dihydrogen phosphate. 5. Manure added superphosphate. Adding 20% ​​superphosphate powder to the manure, and mixing it for more than 20 days, can prevent the loss of nitrogen in the manure, accelerate the maturity of the manure, increase the content of organic phosphorus, and increase the efficiency of phosphorus. 6. Fresh cow dung soy milk. Add 1.25 kg of soya milk per 50 kg of fresh cow dung and mix well. Seal at a temperature of 25°C for 3-6 days. Apply 3 times more water to the fertilizer. The fertilizer is more effective than ammonia. 7. Stacked manure add ammonium bicarbonate. The stalks were cut into pieces, 0.5%--1% ammonium bicarbonate and appropriate amount of human waste and urine were added, and the mud was used to cover the seals. After decomposed, it became a highly efficient bio-potash fertilizer.
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