摘要
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 ;
Coated ureas(CUs:CU1, CU2) were made of normal granular urea by coating with organic polymer layers in different thickness the nitrogen release rate of CUs were determined in lab under different conditions,The results obtained showed that: Coated ureas were all slow release fertilizers The thicker the polymer layer was, the slower its nutrient released; The ammonia volatilization and nitrogen leachate reduced from CUs compared with normal urea; The content of ions in the environment affected the release rate of nitrogen of CUs
出处
《浙江大学学报（农业与生命科学版）》
CAS
CSCD
北大核心
2000年第1期114-118,共5页
Journal of Zhejiang University:Agriculture and Life Sciences
基金
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