利用高分子聚合物为包膜材料 ,根据涂膜量不等制得 CU1,CU2二种包膜尿素 ,并在实验室条件下对其进行性能测试 ,以常规尿素 ( U)作比较 ,验证包膜尿素 ( CU)作为新型高效肥料的优点 .研究结果表明 :包膜尿素 CU系列均具有不同程度的缓效性 ,涂膜量越大 ,养分溶出速率越慢 ;包膜尿素 CU系列在各种土壤中的淋失量和挥发量均少于常规尿素 ;环境中离子浓度高低影响包膜尿素的溶出动态 The use of polymer as the coating material, according to the amount of coated film obtained CU1, CU2 two kinds of coated urea, and its performance under laboratory conditions to test, with conventional urea (U) for comparison, verification package (CU) as the new type of high-efficiency fertilizer.The results show that the coated urea CU series have different degrees of slow-effectiveness, the greater the coating amount, the slower the dissolution rate of nutrients; coated urea CU series in a variety of Soil leaching loss and volatilization were less than the conventional urea; the level of ion concentration in the environment affect the dissolution of coated urea