淹水条件下氨酸法生产颗粒有机无机复混肥养分缓释特性  

Slow Release Characteristics of Nutrients under Flooding Soil Incubation in Granule Organic-inorganic Fertilizers Produced by Using Ammonium and Acid Method

作　　者：周毅[1] 范东坡[1] 赵艺[1] 包燕[1] 汪建飞[1] 段立珍[1] 张从军 王德生 

机构地区：[1]安徽科技学院安徽省有机肥工程技术研究中心,安徽凤阳213100 [2]安徽省莱姆佳肥业有限公司,安徽蚌埠233000

出　　处：《土壤通报》2012年第1期156-160,共5页Chinese Journal of Soil Science

基　　金：公益性行业(农业)专项经费项目(201103004);安徽省科技厅项目(KJ2008B207);安徽科技学院自然科学基金项目(ZRC2008161)资助

摘　　要：采用直接淋洗和淹水培养间歇淋洗两种方法评价氨酸法生产颗粒有机无机复混肥的养分缓释特性。结果表明,对氨酸法生产有机无机复混肥造粒,有直接减缓其有机和无机养分释放的效应。在等氮水平下,不同种类有机无机复混肥累积淋失的氮量明显不同,且与淋失的有机碳量没有明显的相关关系,表明有机与无机养分的配比比例影响肥料的氮释放特性。在本研究中,造粒对氨酸法生产的有机和单一无机氮复混肥中氮养分的缓释效果最差,而对氮钾比为2∶1的两种肥料中有机和无机养分的缓释效果均相对较好。The objective of this study was to assess slow release characteristics of nutrients in granule organic-inorganic compound fertilizers by using both of direct leaching methods and intermittent leaching methods. The result showed that release of organic nutrient and inorganic nitrogen in organic-inorganic compound fertilizers produced by ammonium and acid method could be directly decreased through introduction of granulation process, since granulation could reduce the specific surface area of the fertilizers. The amount of nitrogen leaching varied from fertilizer to fertilizer, and there was no significant relationship between organic matter and inorganic nitrogen content in the leaching solutions. Therefore, ratio of organic nutrient to inorganic nutrient affected the nitrogen release characteristics of the fertihzers. In the paper, granulation reduced nitrogen release velocity of organic-inorganic nitrogen fertilizer ineffectively. However, organic matter and inorganic nitrogen of the fertilizer, containing the 2：1 ratio of nitrogen to potassium, was introduced into the leaching solution at a relatively slower reduced speed.

关 键 词：造粒 有机无机复混肥 有机养分 氮 释放 

分 类 号：S143.6[农业科学—肥料学]