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直接施用液态氧、氨絡合物、氨水等液体氮肥,近年来在許多国家中得到了迅速的发展。而根据几年来使用的实践証明,在液体氮肥中,又以氨水肥料最有发展前途。在苏联1958年氨水肥料使用面积达19万公顷,占使用各种液体氮肥总面积的98％。而美国1958年液体氮肥消费量约占全部氮肥总量的33％,在我国卽将普遍推广的小型氮肥厂(年产800吨的合成氨厂)及某些鋼铁公司焦炉气回收氨,都是将氨加工成含NH_320％左右的氨水肥料,因此氨水肥
The direct application of liquid nitrogen, such as liquid oxygen, ammonia complex and ammonia water, has been rapidly developed in many countries in recent years. According to several years of practice used in liquid nitrogen fertilizer, but also the most promising ammonia fertilizer. In the Soviet Union in 1958 ammonia fertilizer use area of 190,000 hectares, accounting for the use of a variety of liquid nitrogen fertilizer 98% of the total area. The United States in 1958 liquid nitrogen consumption accounts for about 33% of the total amount of nitrogen fertilizer in China, the general promotion of small nitrogenous fertilizer plant (with an annual output of 800 tons of ammonia plant) and some steel coke oven gas recovery of ammonia are The ammonia processing into NH_320% ammonia fertilizer, ammonia fertilizer