缓释化肥概况（上）

在查阅了大量有关缓释化肥文献的基础上，对缓释化肥的发展、现状及生产工艺作了回顾，对缓释化肥的分类，缓释尿素（包括涂硫尿素，大颗粒尿素，包膜尿素、添加阻溶类物质和抑制剂缓释尿素）、长效碳铵、缓释复混肥料及含农药缓释肥料的研究和生产情况作了介绍，并对我国缓释化肥的发展前景进行展望。

General Situation of Slow Release Chemical Fertilizers

After consultation of a vast amount of literature on slow release chemical fertilizers, a review is made of the progress, present status and technological processes of these fertilizers. An introduction is given to the classification of slow release chemical fertilizers and the study and production of slow release urea (including sulfur coated urea, urea supergranules, encapsulated urea, and slow release urea with addition of various inhibitors), long acting ammonium bicarbonate, slow release compound fertilizers and slow release fertilizers containing pesticides. Also, prospects are given for the development of slow release chemical fertilizers in China.