Five kinds of fertilizers cannot be mixed
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Superphosphate cannot be mixed with alkaline fertilizers such as grass ash and lime nitrogen, otherwise it will reduce the effectiveness of phosphorus. Phosphorus ore powder, bone powder and other insoluble phosphate fertilizers can not be mixed with alkaline fertilizers such as grass ash and lime nitrogen. Otherwise, the insoluble phosphate fertilizer will be more difficult to dissolve and the crops will not be absorbed and utilized.
Alkaline fertilizers such as calcium magnesium phosphate can not be mixed with ammonium nitrogen fertilizer. Because alkaline fertilizers are mixed with ammonium nitrogen fertilizers such as ammonium hydrogencarbonate, ammonium sulfate, ammonium nitrate, ammonium chloride, etc., the volatility of ammonia is increased, thereby reducing fertilizer efficiency.
Unfertilized farmyard manure cannot be mixed with ammonium nitrate. Because the unfertilized farmyard manure must be decomposed and rotted before being absorbed and utilized by the crop. If mixed with ammonium nitrate, the unfertilized farmyard manure will lose nitrogen during the process of decomposition and decay, so it can not be applied simultaneously, otherwise the nitrogen will be damaged and the fertilizer efficiency will be reduced.
Chemical fertilizers cannot be mixed with bacterial fertilizers. Because chemical fertilizers have strong corrosiveness, volatility and water absorption, if mixed with bacterial fertilizers such as rhizobia, it will kill or inhibit the living bacteria to make bacterial fertilizers ineffective.