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由于造价低,液氮肥料一般比粒状肥料便宜。尽管其腐蚀性强,但贮藏和管理通常不存在什么问题。为了同粒状硝酸铵(含N27％)进行比较,调查了液氮(含N39％,尿素和硝酸铵各占一半)的适用性和效果,结果表明:在连续放牧的牧区施用液氮后对牲畜健康无任何影响。同时观察到,喷施这种肥料时需采取一定的无灼伤措施,例如:用水稍加稀释;在多云天气利用气压、大滴液在草上喷施。与粒状硝酸铵相比,液氮效果较差,用液氮肥料处理草地的干物质产量和N吸收率分别是粒状硝酸铵处理的76％和73％。
Due to low cost, liquid nitrogen fertilizers are generally cheaper than granular fertilizers. Despite its corrosiveness, there are usually no problems with storage and management. In order to compare with the granular ammonium nitrate (including N27%), the applicability and effect of liquid nitrogen (including N39%, urea and ammonium nitrate each half) were investigated. The results showed that after applying liquid nitrogen to the livestock No effect on health. At the same time, it was observed that certain non-burning measures should be taken when spraying such fertilizers, for example, slightly diluted with water; in cloudy weather, large drops of liquid are sprayed on the grass. Compared with granular ammonium nitrate, the effect of liquid nitrogen was poor. The dry matter yield and N absorption rate of grassland treated with liquid nitrogen fertilizer were 76% and 73% of the granular ammonium nitrate treatment, respectively.