An organic compound consisting of carbon, nitrogen, oxygen, andhydrogen; a white crystal. One of the simplest organic compounds,it is the main nitrogenous end product of protein metabolicbreakdown in mammals and certain fish. As a neutral fertilizer,urea is suitable for a variety of soils and plants.

It is easy to preserve, easy to use, small damage to the soil, isa large use of a chemical nitrogen fertilizer, but also thehighest nitrogen content. In addition to being used asfertilizer, urea is also widely used in other fields.