The nitrate nitrogen fertilizer includes sodium nitrate (NaNO3), calcium nitrate {Ca(NO3)2}, and ammonium nitrate (NH4NO3).

The common characteristics of nitrate nitrogen:

1, soluble in water, move faster in the soil.

2. NO3-absorption is the main absorption, and the crop easily absorbs nitrate.

3. Nitrate fertilizer has no inhibitory effect on the absorption of calcium, magnesium, potassium and other nutrients from crops.

4. Nitrates are negatively charged anions that cannot be adsorbed by soil colloids.

5. Nitrate is easily reduced to gaseous state (NO, N2O, N2) by denitrification and lost from the soil.