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采用不同的施肥方法，研究了在不同作物的情况下，长效涂层尿素和普通尿素在土壤中氨（NH3）挥发损失的速率。结果表明，涂层尿素比普通尿素氨挥发损失减少7．6％－49．2％；施肥后覆土1cm比表施氨挥发损失减少78．7％－89．5％；在盐渍土中氨挥发损失大大增加．
Different fertilization methods were used to study the rate of ammonia (NH3) volatilization loss in soils with long-term coated urea and ordinary urea under different crop conditions. The results showed that the loss of ammonia volatilization of coated urea decreased 7.6% -49.2% than that of common urea; the ammonia volatilization loss of 1cm of coated soil decreased 78.7% -89.5% after fertilization; Volatile losses greatly increased.