Urea (urea), also known as urea and carbonamide, has a chemical formula of CH4N2O. It is an organic compound composed of carbon,nitrogen, oxygen, and hydrogen. It is a white crystal. One of the simplest organic compounds is the main nitrogen-containing end product of protein metabolism and decomposition in mammals and certain fish. As a neutral fertilizer, urea is suitable for various soils and plants. It is easy to store, easy to use, and has little damage to the soil. It is a chemical nitrogen fertilizer that
is used in a large amount and is also the nitrogen fertilizer with the highest nitrogen content. In industry, ammonia and carbon
dioxide are used to synthesize urea under certain conditions.