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Acid-alkaline classification of chemical fertilizer
2019-06-05 15:09:29

Acid fertilizer

Acid fertilizer is divided into two kinds, one is chemical acid, its aqueous solution is acidic, such as mono potassium phosphate, urea phosphate,the other is physiological acid, it is neutral in aqueous solution, but after applied into the soil, one part is absorbed by the crops, the other part left in the soil is acidic, such as ammonium chloride, ammonium sulfate, potassium sulfate, etc.

Alkaline fertilizer

Alkaline fertilizer is divided into two kinds, one is chemical alkalinity, its aqueous solution shows alkalescent, like di ammonium phosphate.The other is physiologically alkaline, its aqueous solution is neutral, but after applied into the soil, a part of it is absorbed by crops, the other part left in the soil, is alkaline, such as sodium nitrate, calcium nitrate.

Neutral fertilizer

The aqueous solution of neutral fertilizer is neither acidic nor alkaline, nor acidic or alkaline when applied to soil.Therefore it can be applied to any soil, such as urea.