The difference between enterprise standard and national standard of compound nitrogen fertilizer

National quality standards for compound fertilizers:

1. The total nitrogen and phosphorus content of nitrate phosphate fertilizers is required to be 36%~40% (20%~27% for nitrogen and 11%~13.5% for phosphorus).

2, monoammonium phosphate total nitrogen and phosphorus content requirements of 51%~63% (9%~11% nitrogen, phosphorus is 42%~52%).

3, diammonium phosphate nitrogen and phosphorus total content requirements of 51% to 64% (13% to 18% nitrogen, phosphorus is 38% to 46%).

China's relevant institutions are currently preparing to draft the production standards of compound nitrogen fertilizer industry, with a view to standardizing the production of compound nitrogen fertilizer and promoting the healthy development of nitrogen fertilizer industry. At present, there are a number of domestic enterprises to urea, ammonium chloride, ammonium sulfate as raw materials, adding magnesium oxide and other production of compound nitrogenous fertilizer, however, due to the absence of national standards and industry standards, enterprises can only according to their respective enterprise standards to organize production, thus in the name and nutrient identification is very confusing.