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The first is that calcium superphosphate cannot be mixed with alkaline fertilizers such as grass ash, lime nitrogen, and lime. Because the superphosphate contains free acid and is acidic, the alkaline fertilizer contains more calcium. If the two are mixed, it will cause acid-base reactions, reduce the fertilizer efficiency, and cause the calcium to fix the phosphorus, causing them to lose both. Phosphate rock powder, bone powder and other insoluble phosphate fertilizers can not be mixed with alkaline fertilizers such as grass ash, lime nitrogen, and lime, otherwise they will neutralize the organic acid substances in the soil, making insoluble phosphate fertilizer more difficult to dissolve, and crops unable to absorb and use.
Followed by calcium magnesium phosphate fertilizer and other alkaline fertilizers can not be mixed with ammonium nitrogen fertilizer. Because alkaline fertilizers and ammonium nitrogen fertilizers such as ammonium sulfate, ammonium bicarbonate, ammonium chloride, ammonium nitrate, etc., will lead to and increase ammonia loss, reduce fertilizer efficiency.
The third is that farmyard manure such as human and animal manure can not be mixed with calcium, magnesium phosphate fertilizer, grass ash, lime ammonia, lime and other alkaline fertilizers. Because the main component of human and animal waste is nitrogen, if it is mixed with alkaline fertilizer, it will neutralize and fail. In addition, unfamiliar farmyard fertilizers cannot be mixed with ammonium nitrate, because unripe farmyard manures can only be absorbed and utilized by the crops after decomposition and rot. If they are mixed with ammonium nitrate, the unripe farmyard manure will undergo nitrogen decomposition during decomposition. Losses, so can not be applied, otherwise both of the nitrogen will be damaged, reducing fertilizer efficiency.
The fourth is that chemical fertilizers cannot be mixed with rhizobia and other bacterial fertilizers. Because chemical fertilizers are relatively corrosive, volatile, and absorbent, if they are mixed with bacterial fertilizers, they will kill or inhibit live bacteria and make the fertilizer useless.
In addition, ammonia can not be mixed with human excreta, plant ash, potash, ammonium phosphate, potassium chloride, urea, and ammonium bicarbonate. Ammonium bicarbonate must not be mixed with plant ash, human waste, and potash nitrogen. Ammonium sulfate cannot be mixed with ash and ammonium bicarbonate. Ammonium nitrate cannot be mixed with grass ash, ammonia, etc. In short, in the fertilization, the farmers' friends should ask the technicians more to avoid mixing the wrong fertilizer and letting their crop yields suffer.
Some farmers do not understand the performance of chemical fertilizers and mix chemical fertilizers indiscriminately, causing some crops to dry, burn and die. Now tell farmers what fertilizers can't be mixed so that they can be reasonably used in production.