How to improve the efficiency of farmyard fertilizer
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2, fresh cow dung added soy milk pulp method: add 1.25 kg of soy milk per 50 kg of fresh cow dung, artificially stirred evenly, sealed at 25 ° C for 3-6 days, 3 times with water for top dressing, its fertilizer efficiency than ammonia Still high,
3, the addition of superphosphate method of grass ash: 10 kg of water per 6 kg of grass ash, soak for 6 hours, filter to remove the clear solution for use; another 2 kg of superphosphate powder, add water and stir evenly, let it naturally precipitate and take the filtrate, then Mix the two solutions and spray 100 kg with water to obtain the same fertilizer effect as potassium dihydrogen phosphate.
4, human feces and urine added gypsum powder method: add 5 kg of gypsum powder in every 50 kg of human excrement, add 25 kg of water, mix and mix evenly, cover and store for 10 days, can reduce the loss of nitrogen volatilization, increase fertilizer efficiency .
5. Adding ferrous sulfate to human excrement: Adding 300 g of ferrous sulfate (green strontium) to every 50 kg of human excrement can convert ammonium carbonate in urine into stable ammonium sulfate.
6. Adding superphosphate to human excrement: Add 2.5 kg of superphosphate in every 50 kg of human excrement, mix it evenly and store it for 5-7 days, not only to prevent nitrogen loss, but also greatly improve fertilizer utilization. .