Nitrogen Fertilizer

Nitrogen Fertilizer refers to a unit fertilizer with nitrogen (N) as the main component, with an N-marked amount, and applied to the soil to provide plant nitrogen nutrition. Nitrogen fertilizer is the world's largest fertilizer production and use of fertilizer varieties; Appropriate nitrogen fertilizer dosage plays an important role in increasing crop yield and improving the quality of agricultural products. Nitrogen fertilizer can be divided into ammonia nitrogen fertilizer, ammonium nitrogen fertilizer, nitrate nitrogen fertilizer, ammonium nitrate nitrogen fertilizer, cyanamide nitrogen fertilizer and amide nitrogen fertilizer according to nitrogen-containing groups. The main raw material for the production of chemical nitrogen fertilizer is synthetic ammonia (the Haber method device for generating synthetic ammonia was built in 1909 and first industrialized in Germany, becoming the basis of the nitrogen Fertilizer Industry), in the 1940s and 1950s, ammonium sulfate was the most important nitrogen fertilizer variety; In the 1960s, ammonium nitrate was added; Since the 1970s, urea has become the dominant nitrogen fertilizer variety. Ammonium Bicarbonate is one of the main nitrogen fertilizer varieties produced in China in the 1980s.