3. The first natural ammonia compound (NH3), which is involved in the natural reaction, is converted to nitrite (NO2-) by the bacteria in the soil, and finally, nitrate (NO3-) ions are formed by nitrification. 4. Under special soil conditions (mainly hypoxia), nitrate (NO3-) ions are converted into various gaseous nitrogen oxides (NOx, N2O) and nitrogen by denitrification. Nitrogen typically produces losses during the transformation of different forms. If these nitrogens are applied in an organic or inorganic form, the more the amount is used, the greater the loss of nitrogen. The goal of optimal nitrogen management is to ensure optimal crop yields while reducing nitrogen losses in the environment. This goal is generally achieved in several ways.
3. សមាសធាតុអាម៉ូញាក់ធម្មជាតិដំបូង (NH3) ដែលពាក់ព័ន្ធនឹងប្រតិកម្មធម្មជាតិត្រូវបានបម្លែងទៅជា nitrite (NO2-) ដោយបាក់តេរីនៅក្នុងដីហើយនៅទីបញ្ចប់អាតូម nitrate (NO3-) ត្រូវបានបង្កើតឡើងដោយ nitrification ។