摘要
采用两性分子结构化合物制备了包膜尿素,用电导率法测定了包膜尿素的养分释放速率,研究了包膜物质用量及包膜操作条件对包膜尿素养分释放速率的影响,结果表明该种包膜尿素具有较好的缓溶解、缓释放作用;电导率法测定包膜尿素的释放速率行之有效。
The urea was coated with hydrophile-lipophile compounds and the nutrient releasing rate was evaluated by the measurement of conductivity. The quantity of coating materials and operating conditions were optimized. The result show that the coated urea releases nutrient much slower than normal fertilizer. Evaluating the nutrient releasing rate by the measurement of electric conductivity is workable.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2005年第2期257-259,263,共4页
Polymer Materials Science & Engineering
关键词
包膜尿素
制备
电导率
释放速率
coated urea
preparation
conductivity
releasing rate
