Is there any way to improve the efficiency of urea fertilizer?

What are the ways to improve urea efficiency? Please introduce the method urea fertilizer efficiency can be improved by the following methods: 1, urea deep application: this is conducive to the conversion of urea, but also can reduce the volatilization loss after urea conversion ammonium carbonate, application can not be too close to the root system, to prevent ammonia damage burning seedlings. 2. Urea application method in paddy field: When urea is used as topdressing for rice, considering the characteristics of large initial fluidity, irrigation is not immediately applied after application, and irrigation is not allowed until it is converted into ammonia nitrogen a few days later. 3, less application of multiple methods: in sandy soil do not apply urea excessive loss, should be based on the principle of "eat less and eat more", flexible application. 4, early application: because urea is a low-molecular organic compound, after application into the soil to have an ammoniation process, converted into a very volatile ammonium carbonate, can be absorbed by the roots of crops, therefore, the use of urea as topdressing should be applied about 7 days earlier than other nitrogen fertilizers. 5, not mixed with alkaline fertilizer: urea is a neutral fertilizer, if mixed with alkaline fertilizer, easy to reduce fertilizer efficiency. If applied alternately, it should also be staggered for 3-5 days. 6, after the application of urea is not immediately watered, irrigation: urea applied to the soil, before it is decomposed and transformed, it cannot be adsorbed by the soil. Irrigation immediately after top dressing results in significant urea loss. Soil water shortage is serious, non-irrigation can not be, but also to do small water frequently irrigation, avoid flood irrigation. Click for more nitrogen, phosphorus and potassium application technologies Click for more fertilizer application technologies