缓释和控释尿素的研究与开发综述

Review on the Research and Development of Control-release Urea and Slow-release Urea

分析了尿素利用率低对环境的影响和尿素在土壤中的释放过程 ,阐述了各种缓释和控释尿素的产品设计、缓释机理和制备方法以及国内外对缓释和控释尿素尤其是包膜尿素的研发进展 ,对提高尿素利用率。

The effects of low utilization efficiency of urea on environment and the release process of urea in soil are analyzed.The product design,slow/control-release mechanism and the preparation techniques of the slow/control-release urea are introduced.The research and development of the slow/control-release urea,particularly the film-coated urea are reviewed and the film-coated urea research for high utilization efficiency is prospected.