What is ammonium nitrogen fertilizer? What are the ammonium nitrogen fertilizers?

What is ammonium nitrogen fertilizer? What are the ammonium nitrogen fertilizers? What are the properties? Please also know the netizens to help introduce that ammonium nitrogen fertilizer is an elemental nitrogen fertilizer in the form of ammonium salt, and the more common ones are ammonium bicarbonate, ammonium sulfate and ammonium chloride. The farming network has sorted out the properties of the above three ammonium nitrogen fertilizers, which are listed in detail below for netizens' reference. The characteristics of ammonium bicarbonate: ammonium bicarbonate generally contains about 17.7% nitrogen, colorless or white, easy to decompose at room temperature, can add surfactants to increase ammonium bicarbonate particles, no acid residue, long-term application does not affect the soil quality, is one of the safest varieties of nitrogen fertilizer. Ammonium bicarbonate can be stored for a long time without caking, and its fertilizer efficiency is higher than that of ordinary ammonium bicarbonate, and it can also be used as the raw material of ternary compound fertilizer. Usage of ammonium bicarbonate: the application of ammonium bicarbonate should follow the fertilization principle of not leaving soil without water and fertilizing soil first and then fertilizing seedlings, that is, ammonium bicarbonate should be deeply applied into the soil to make it inseparable from soil and water, be absorbed by soil particles and continuously supply fertilizer to crops. Ammonium bicarbonate can be used as base fertilizer for deep application, and can also be used as topdressing for ditch and hole application. Ammonium bicarbonate points for attention: 1, ammonium bicarbonate avoid foliar spraying, easy to burn leaves. 2. Ammonium bicarbonate avoids dry soil fertilization and high temperature fertilization. 3. Ammonium bicarbonate is not allowed to be mixed with alkaline fertilizers such as plant ash and lime. 4. Ammonium bicarbonate is not allowed to be mixed with bacterial fertilizer. 5. Ammonium bicarbonate should not be mixed with calcium superphosphate and used overnight. 6. Ammonium bicarbonate should not be mixed with urea. 7. Ammonium bicarbonate should not be mixed with pesticides. 8. Ammonium bicarbonate should not be used as a kind of fertilizer. The characteristics of ammonium sulfate: general ammonium sulfate nitrogen content 20% Mel 21%, sulfur 25.6% colorless crystal or white particles, miscellaneous color indicates that it contains impurities, odorless, stable, physiologically acidic fertilizer, fast fertilizer effect, suitable for general soil and crops. The use of ammonium sulfate: ammonium sulfate can be used as base fertilizer, topdressing and seed fertilizer, deep application of fertilizer and conducive to crop absorption. Topdressing methods can be ditch application and hole application. Points for attention of ammonium sulfate: 1. Ammonium sulfate is used as seed fertilizer to control the amount of seed burning. 2. Ammonium sulfate and calcium carbonate are easy to produce calcium sulfate in soil, and long-term use can lead to soil consolidation. 3. In the soil with strong reducibility, ammonium sulfate can be reduced to hydrogen sulfide, especially in the later stage of crop growth. Characteristics of ammonium chloride: general nitrogen content of ammonium chloride is about 24% Mur25%, colorless or white crystalline powder, odorless, strong hygroscopicity, easy to caking, easy to dissolve, physiologically acidic fertilizer, rapid fertilizer effect, similar to ammonium sulfate, chloride can inhibit nitrification and promote crop mineral absorption, but chloride ion is easy to produce hydrochloric acid. Calcium chloride is produced with soil colloid in neutral or calcareous soil, resulting in the decline of soil colloid quality. The usage of ammonium chloride: ammonium chloride can be used as base fertilizer and topdressing fertilizer, but can not be used as seed fertilizer. It is suitable for wheat, rice, corn, rape and other crops, especially for cotton and flax crops to enhance fiber toughness and tension and improve quality. The effect of application in paddy field is better than that of ammonium sulfate. Ammonium chloride precautions: 1, ammonium chloride can not be applied together with alkaline fertilizer, it is best not to be applied in saline soil. 2. Tobacco, sugarcane, potato, flax, tea, sweet potato and other taboo crops should not be applied in large quantities. What are the common nitrogen fertilizers? what are the functions of magnesium fertilizers?