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  •  硫酸铵的使用须知_科普知识_管家婆论坛|管家婆图库_管家婆马报-管家婆资料大全
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    硫酸铵的使用须知

    2017-05-05

      (1)不能与其他碱性肥料或碱性物质接触或混合施用,以防降低肥效。
      (2)不宜在同一块耕地上长期施用硫酸铵,否则土壤会变酸造成板结。如确需施用时,可适量配合施用一些石灰或凯发彩票下载。但必须注意不能和石灰混施,以防止硫酸铵分解,造成氮素损失。一般两者的配合施用要相隔3~5天。
      (3)不适于在酸性土壤上施用。由氢氧化铵和硫酸中和后,结晶、离心分离并干燥而得。
      中和法氨与硫酸约在100℃下进行中和反应,生成的硫酸铵晶浆液经离心分离、干燥,制得硫酸铵成品。其化学反应如下:2NH3+H2SO4→(NH4)2SO4回收法由炼焦炉气回收氨气,再与硫酸进行中和反应而得。

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