聚合物包膜肥料研究进展

控释肥料具有重要的经济效益和生态效益，目前世界上应用最多的控释肥料是聚合物包膜肥料。简要阐述了聚合物包膜肥料的研究现状和聚合物模型膜，并对养分释放的模拟进行了探讨。影响聚合物包膜肥料养分释放的因素主要有：膜厚、颗粒半径、扩散系数、养分组成及其溶解特性。国内聚合物包膜肥料的应用还处于起步阶段，随着经济的发展，聚合物包膜肥料在国内具有巨大的应用潜力。中国有关聚合物包膜肥料的研究取得了较好进展，但与发达国家相比，仍然处于较低水平。因此，推出具有中国独立知识产权的商品化聚合物包膜肥料要求加强理论基础研究，并加快产业化进程。

ADVANCE IN POLYMER-COATED CONTROLLED RELEASE FERTILIZERS

Economic and bionomical benefit can be reached through using controlled-release fertilizers. The most important application of controlled-release of fertilizer is polymer-coated fertilizers. The current research and nutrients release model about polymer-coated controlled-release fertilizer are briefly introduced in this paper. The factors that influence the nutrients release behavior are as followings, membrane thickness, granule radius, diffusion coefficient, nutrients composition and nutrient dissolving property. The application of polymer-coated controlled-release fertilizer in our country is in the initial stage, and almost depends on importation, but shows strong application potential in future with the economic development. Some important progress about the research of polymer-coated controlled-release fertilizer has been made in our country. However, there are also some deficiencies in technological, co-operational and market aspects. Therefore, a commercial polymer-coated controlled-release fertilizer with Chinese-owned needs a long time study, especially in the theory research and market development.