二十世纪五十年代,也是尿素紧缺的时代,碳铵凭着生产工艺简单、较低的投资成本、使用方便、见效快等特点快速地发展起来,一度成为农业生产的当家肥。然而,复合肥和尿素的快速发展,让碳铵的优势变得越来越不明显,碳铵企业也在市场竞争中不得不考虑如何生存。特定时期的产品难道除了退出历史舞台就没有别的出路吗? Twentieth century, the fifties, but also the era of urea shortage, ammonium bicarbonate with the production process is simple, lower investment costs, ease of use, quick and so quickly developed characteristics, once became the masters of agricultural production. However, with the rapid development of compound fertilizers and urea, the advantages of ammonium bicarbonate have become less and less obvious. Ammonium bicarbonate enterprises also have to consider how to survive in the market competition. Is there any other way to exit the stage of history in the specific period?