| 异粒包膜控释肥料氮素释放特性的研究 |
| |
| 引用本文： | 廖照源,樊小林,郑祥洲.异粒包膜控释肥料氮素释放特性的研究[J].植物营养与肥料学报,2010,16(1):203-207. |
| |
| 作者姓名： | 廖照源 樊小林 郑祥洲 |
| |
| 作者单位： | 1.华南农业大学资源环境学院,广东广州 510642 |
| |
| 基金项目： | 国家科技支撑计划，国家自然科学基金 |
| |
| 摘 要： | 按照商品控释肥料的核芯肥料之粒级进行混配，利用底喷流化包膜技术制造出异粒包膜控释肥。通过静水培养试验，分别测得不同粒径控释肥料0、1、2、3、4、5、6、7、14、21、28、56 d的氮素释放率，探讨粒径对氮素释放率、膜芯比等的影响。结果表明，随着粒径增加，氮素释放率明显降低，培养1 d，2～3、3～4、4～5 mm粒径控释肥料的氮素释放率依次为26.9%、4.45%、1.26%； 2～3 mm粒径的控释肥料的控释期只有4 d，3～4 mm为28 d，4～5 mm的大于56 d。培养过程，即控释肥料氮素释放过程，前期释放的氮素主要来自3 mm粒径的控释肥料。粒径大小对膜芯比有极显著的影响，膜芯比随着粒径的增加而增加。2～3 mm粒径控释肥料膜芯比比预设的降低15.58%，3～4 mm的降低了4.29%； 而4～5 mm的膜芯比则比设计的增加了5.65％。因此要保证控释肥料产品的质量，核芯肥料的粒级是必须控制的重要因素之一。
|
| 关 键 词： | 异粒包膜控释肥 粒径 氮素释放率 膜芯比 |
| 收稿时间： | 2008-11-24 |
Study on nitrogen characteristics of coated controlled-release fertilizer with different particle sizes |
| |
| LIAO Zhao-yuan,FAN Xiao-lin,ZHENG Xiang-zhou.Study on nitrogen characteristics of coated controlled-release fertilizer with different particle sizes[J].Plant Nutrition and Fertilizer Science,2010,16(1):203-207. |
| |
| Authors: | LIAO Zhao-yuan FAN Xiao-lin ZHENG Xiang-zhou |
| |
| Institution: | 1.College of Resources and Environmental Sciences,South China Agricultural University,Guangzhou,Guangdong 510642,China |
| |
| Abstract: | At present,although controlled-release fertilizer(CRFs) has stepped on the industrial scale in China,the technology of controlled release is behind that of developed countries such as USA and Canada.Qualities of CRF of different products are different.One of the reasons for the quality difference might come from the difference of substrate of CRF,being kernel compounds of the CRF. Currently,most of researches on CRF pay great attention to the coating materials and coating technique rather than the substrate... |
| |
| Keywords: | different particle size controlled-release fertilizer substrate granular size nitrogen release rate ratio of coating material to substrate |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《植物营养与肥料学报》浏览原始摘要信息 |
| 点击此处可从《植物营养与肥料学报》下载免费的PDF全文 |
