提高尿素利用率的几种方法尿素含氮量达４６％，是我国农业上大量使用的氮素化肥。但目前利用率仅４５—５０％，如果尿素利用率全国平均提高１０％，则相当于新建５座年产３０万吨的化肥厂。一、施用尿素后立即灌水：此法可使尿素随水深贮于土壤下层，以后随着水分上移，... Several ways to improve urea utilization urea nitrogen content of 46%, is China’s agricultural use of nitrogen fertilizer. However, the current utilization rate is only 45-50%. If the urea utilization rate is increased by 10% on average across the country, it is equivalent to the construction of 5 new fertilizer plants with an annual output of 300,000 tons. First, immediately after the application of urea irrigation: This method allows the storage of urea in the soil with water depth, with water later, ...