包膜肥料养分控释机理研究进展3.PDF

应 用 生 态 学 报 　2003 年 12 月 　第 14 卷 　第 12 期 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 CHIN ESE J OU RNAL OF A PPL IED ECOL O GY ,Dec . 2003 ,14 ( 12) ∶2337～234 1 包膜肥料养分控释机理研究进展 张海军 　武志杰 　梁文举 　解宏图 ( 中国科学院沈阳应用生态研究所 ,沈阳 1100 16) 【摘要】　利用胶囊技术将易水溶性肥料包被起来是提高肥料利用率和减少施肥环境风险的一个重要手 段. 在广泛收集国内外有关包膜肥料研究的基础上 ,探讨了包膜肥料养分控释的原理 、过程和特征 ,概述了 影响包膜肥料养分控释的因素和包膜肥料养分控释的数学模拟研究 ,并提出了我国包膜肥料养分控释机 理研究的主要方向. 关键词 　包膜肥料 　控释膜 　控释机理 文章编号 　100 1 - 9332 (2003) 12 - 2337 - 05 　中图分类号 　S14 　文献标识码 　A Research advances on controlledrelease mechanisms of nutrients in coated fertilizers. ZHAN G Haij un , WU Zhijie ,L IAN G Wenj u , XIE Hongtu ( I ns tit ute of A pp lied Ecology , Chinese A cademy of S ciences , S heny ang ) . ( 12) :2337～234 1. 1100 16 , China Chin . J . A pp l . Ecol . ,2003 ,14 U sing encap sulation techniques to coat easily soluble fertilizers is an important way to improve fertilizer use effi ciency while reduce environmental hazards. Based on a wide range of literature collection on coated fertilizer re search ,t he t heories ,processes ,and characters of nutrient controlledrelease from coated fertilizer were discussed , and t he factors affecting nutrient controlledrelease and t he mat hematical simulations on it were reviewed . The main tendencies related to t his research in China were also put forward . Key words 　Coated fertilizer , Controlledrelease membrane , Controlledrelease mechanism . ( ) ( ) 式中 , M 为养分从膜内向外释放量 g , t 为时间 min , P 为 1 　引　　言