涂·层·尿·素涂层尿素是尿素的改性产品。它是在普通尿素颗粒表面喷涂一层溶液，经干固而成。涂层溶液是一种胶状物质，并含有一些作物生长所需的微量营养元素。这一涂层能使尿素营养元素平缓释放，延长肥效，使农作物及时吸收利用，避免了普通尿素释放氮素过快，农作物... Coating · layer · urine · urea coated urea is a modified product. It is sprayed on the surface of ordinary urea particles a layer of solution, the dry solid formed. The coating solution is a jelly substance that contains some of the micronutrients required for crop growth. This coating can make the urea nutrient elements gently release, lengthen the fertilizer effect, make the crops absorb and utilize in time, and avoid the common urea releasing nitrogen too fast, the crops ...