硝酸铵含氮量33～35％,兼有作物最易吸收利用的铵态氮和硝态氮,肥效很高。各地田间试验证明,硝酸铵在旱田作物上的增产效果要比硫酸铵高,一般不宜作基肥和种肥,作追肥亩施量为35～50斤。如掺3～5倍的细土做成球肥施用,可使肥效提高19-25％。 Ammonium nitrate content of 33 to 35%, both the most readily available crop absorption of ammonium nitrogen and nitrate nitrogen, high efficiency. Field trials across the field proved that ammonium nitrate in the dry-crop yield-increasing effect than ammonium sulfate is high, generally not suitable for basal and seed fertilizers for dressing fertilizer Mushi amount of 35 to 50 pounds. If mixed with 3 to 5 times the fine soil made of fertilizer application, fertilizer efficiency can be increased by 19-25%.