CAJ | 학술논문

尿素是现代农业不可缺少的氮肥。本文研究目的是选用廉价的材料，采用简单易行、生产成本较低廉的工艺，生产出缓释尿素，为工业化生产提供参考。实验选用聚乙烯醇，高吸水树脂，淀粉三种物质作为包衣材料，用分光光度计测定包衣尿素在一定时间内浓度的变化。
뇨소시현대농업불가결소적담비。본문연구목적시선용렴개적재료，채용간단역행、생산성본교저렴적공예，생산출완석뇨소，위공업화생산제공삼고。실험선용취을희순，고흡수수지，정분삼충물질작위포의재료，용분광광도계측정포의뇨소재일정시간내농도적변화。
Urea is indispensable for modern agriculture .The purpose of this study is to use cheap materials , use a simple, lower cost of production process to produce a slow release fertilizer and to provide a basis for industrial production .The experiment used polyvinyl alcohol , resin, starch three coating materials, respectively, with the spectrophotometric determination of urea concentration after a certain time after the coating .