Which fertilizers cannot be mixed

Phosphate rock, bone powder and other insoluble phosphate fertilizer can not be mixed with alkaline fertilizer such as grass ash, lime ammonia, lime. Otherwise it will neutralize the organic acids in the soil, making it harder to dissolve insoluble phosphate fertilizers, and crops cannot absorb and use them. Alkaline fertilizer such as calcium magnesium phosphate fertilizer can not be mixed with ammonium ammonia fertilizer. Because alkaline fertilizers and ammonium ammonia fertilizers such as ammonium sulfate, ammonium bicarbonate, ammonium chloride, etc., will accelerate the volatilization of ammonia and reduce fertilizer efficiency.

Human and animal manure and other farmyard fertilizers cannot be mixed with alkaline fertilizers such as calcium, magnesium phosphate, grass ash, and lime. Because the main component of human and animal urine is nitrogen, if it is mixed with a strong alkaline fertilizer, it will neutralize and fail. Ammonia cannot be mixed with human excreta, grass ash, potash, ammonium phosphate, potassium chloride, urea, and ammonium bicarbonate. Ammonium bicarbonate cannot be mixed with plant ash, human waste, potassium fertilizer, and nitrogen fertilizer.

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