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1. Add calcium phosphate to human excrement. Add 5 kg of superphosphate to each 100 kg of human excreta and store for 5 to 10 days. Through chemical reaction, the volatile ammonium carbonate in human excrement can be converted into stable ammonium phosphate to prevent the loss of nitrogen volatilization, and at the same time increase the phosphorus in human excrement and nitrogen to protect nitrogen.
Second, add salt in human waste. In every 100 kilograms of human excrement, in addition to adding 5 kg of superphosphate, adding 3 kg of salt, fully stirred and fermented for 10 days, can greatly increase the nitrogen content, and can be watered 3 times when used.
Third, add yellow soy milk in fresh cow dung. Add 2.5 kg of soy milk to 100 kg of fresh cow dung, stir it evenly in the tank, and seal it at 25 °C for 3-6 days. The fertilizer efficiency will be greatly improved. When applying, it is necessary to use 3 times of water for topdressing.
4. Add superphosphate in manure and compost. Adding 20% ​​calcium superphosphate to manure and compost, stacking for 20 to 25 days, can improve the quality of manure and compost.
5. Superphosphate with grass ash. After pulverizing 1 kg of superphosphate, add 2.5 kg of water and mix well to allow it to precipitate naturally. In addition, 3 kg of grass ash and 5 kg of water were soaked for a period of time. Finally, the two leachate were filtered and mixed to become potassium dihydrogen phosphate similar to the spray application, and 50 kg of water was sprayed when used.
The specific methods are as follows:
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