包膜控释肥养分释放特性评价方法的研究进展.pdfVIP

植物营养与肥料学报 2002 ,8 ( 1) :16～21 Plant Nutrition and Fertilizer Science 包膜控释肥养分释放特性评价方法的研究进展 杜建军 , 廖宗文 , 宋 波 , 朱兆华 (华南农业大学新肥料资源研究室 ,广东广州 510642) 摘要 :控释肥已成为国内外肥料研究的热点 ,但是评价控释肥养分释放特性的方法研究相对滞后 ,至今没有较为完 ( ) 善的方法和统一的测试标准。本文综述了包膜控释肥养分释放特性的现有评价方法 :水中 或溶液 溶出率法、土 壤溶出率法、扩散率法、渗透率法、电超滤法和同位素示踪法等 ;评述了各种方法的优缺点及改进途径 ;并展望了今 后评价方法的研究方向。 关键词 : 包膜控释肥 ; 养分释放 ; 评价方法 ( ) 中图分类号: TQ449. 1 　　文献标识码 :A 　　文章编号 :1008505X 2002 Progress on evaluation methods for nutrient release characteristic of coated controlled release fertilizers DU Jianjun , L IAO Zon gwen , SON G Bo , ZHU Zhaohua ( ) College of Resou . and Envi r . , South Chi na A gric . U niv. , Guangz hou 5610642 , Chi na Abstract : Controlled release fertilizers (CRFs) have become a hotspot in fertilizer research in both domestic and abroad , but the researches in evaluation methods for nutrient release characteristic of CRFs are relatively back ward. Up to now , there has not been perfect method and unified testing standard. This paper reviewed the pre sent evaluation methods : water (or solution) dissolution rate method , soil dissolution rate method , infiltrate method , permeabilit y method , isotopic tracer method and electroultrafiltration method , analyzing the merit , the shortcoming and the improving way of them and prospecting the direction of the evaluation methods in