有机高聚物包膜控释肥氮释放特性的测定与农业评价.pdfVIP

植物营养与肥料学报 2002 ,8 ( 1) :44～47 Plant Nutrition and Fertilizer Science 有机高聚物包膜控释肥氮释放特性的测定 与农业评价 陈剑慧 ,曹一平 ,许 涵 ,房增国 ,毛达如 ( 中国农业大学植物营养系 北京 100094 ) 摘要 :采用水浸泡法对 3 种有机高聚物包膜控释肥 Osmocote 、MEISTER 和山东农业大学包膜肥试样的养分溶出 特征进行了系统比较测定 ,研究了 3 种控释肥初期溶出率、微分溶出率和养分释放期的特征与差异 ;研究了温度对 3 种包膜控释肥氮素释放率与释放期的影响 ;通过土壤施用包膜控释肥的盆栽试验 ,测定水稻全生育期的吸氮量和 产量。并将 2 种测定方法综合分析 ,用于评价不同控释肥的作用适应性 ,为包膜控释肥的合理使用提供依据。 关键词 :有机高聚物包膜肥 ;养分溶出率 ;释放期 ;水稻 ;吸氮量 ( ) 中图分类号:S145. 6 ; TQ314 　　文献标识码 :A 　　文章编号 :1008505X 2002 Appraisal of nitrogen releasing characteristics of organic polymer coating controlledrelease fertilizer CHEN Jianhui , CAO Yiping , XU Han , FAN G Zengguo , MAO Daru ( Depart ment of Plant N ut rition , Chi na A gricult ural U niversity , Beiji n g 100094 , Chi na ) Abstract : Three kinds of controlledrelease fertilizers , Osmocote (ACRF) , MEISTER (J CRF) and the sam ple of Shandong Agricultural University (CCRF) , coated by organic polymer , were used in this study. The sol uble properties of fertilizers were tested and compared in water. Contrasts of three fertilizers on preliminary solu bilit y , differential solubility and N released period. The effect of temperature on the rate and period of fertiliz ers’N release was discussed. Results were evaluated comprehensively , in order to appraise the adaptabilit y of these three CRFs to crops. Key words : organic polymercoatingcontrolledrelease fertilizer ; rate of N release ; release period ; rice ; nitrogen uptake 　　有机高聚物包膜肥是为国际所公认的控释肥 的全面评价。这种状况对于缓/ 控释肥料的健康发 料[1 ] ,这类肥料的基本特征是其养分释放速率具有 展和合理使用是不利的。因此 ,如何将水浸泡法与 较