Ammonium Nitrogen Fertilizer

Ammonium nitrogen fertilizers include ammonium bicarbonate (NH4HCO3), ammonium sulfate {(NH4)2SO4}, ammonium chloride (NH4Cl), ammonia (NH3.H2O), liquid ammonia (NH3) and so on.

Common characteristics of ammonium nitrogen fertilizer:

1. Ammonium nitrogen fertilizer is easily adsorbed by soil colloids, and part of it enters the crystal layer of clay minerals.

2. Ammonium nitrogen is easily oxidized into nitrate.

3. Ammonia is easily volatile and lost in alkaline environment.

4. High concentration of ammonium nitrogen is prone to poisoning crops.

5. Excessive absorption of ammonium nitrogen by crops has a certain inhibitory effect on the absorption of calcium, magnesium and potassium.