包膜尿素态氮肥缓释效果检测方法初探  

Evaluation Method for Nutrient Release Characteristics of Coated Controlled-release Urea Fertilizer

作　　者：牟林[1] 韩晓日[1] 张芳[1] 于成广[1] 徐志强 

机构地区：[1]沈阳农业大学土地与环境学院,沈阳110161 [2]辽宁省土肥总站,沈阳110034

出　　处：《沈阳农业大学学报》2006年第6期896-899,共4页Journal of Shenyang Agricultural University

基　　金：国家"863"项目(2001AA246021);辽宁省"十五"科技重大攻关项目(2001208002)

摘　　要：根据氮素肥料大多采用含氮量较高尿素作为原料的特点,采用一种检测酰胺态氮的化学方法来研究包膜尿素态氮肥的缓释性能。通过水溶与土壤淋溶试验,对比分析氮素释放率曲线模型。结果表明:该方法能够基本上评价出包膜尿素态氮肥的缓释效果,尤其对疏水型材料包裹的尿素态氮肥评价更为贴切。Aceording to the popularity of urea, we studied a method for determining nitrogen chemistry from coated controlledrelease urea fertilizer. With the leaching experiments of soil and water, the model of N nutrient releasing characteristics was ama; gsed. The results showed that the method could evaluate the effect of coated controlled-release urea fertilizer. This method was more precise for studying the mechanism of water resisting material coated controlled-release urea fertilizer.

关 键 词：包膜缓释肥料 淋溶释放试验 检测评价方法 

分 类 号：S145.6[农业科学—肥料学]