Results showed that the rate of ammonia volatilization of coated-urea was lower than common urea under different water content conditions (10%. 15%. and 20%).

• 试验结果表明，在三种不同水分含量条件下（10%25、15%25、20%25），涂层尿素施入土壤后氨挥发速率均比普遍尿素低;