| 一种生物降解型膨化缓释尿素化肥的制备和应用 |
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| 引用本文： | 李曼,孙光远,孙有光,毕继伟,张婧一. 一种生物降解型膨化缓释尿素化肥的制备和应用[J]. 天津理工大学学报, 2007, 23(4): 24-26 |
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| 作者姓名： | 李曼 孙光远 孙有光 毕继伟 张婧一 |
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| 作者单位： | 1. 天津理工大学,化学化工学院,天津,300191
2. 北京化工大学,化学工程学院,北京,100029 |
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| 摘 要： | 采用不造成二次污染的变质玉米、油脚等工农业废弃物,通过膨化技术制备新型缓释肥料.实验结果表明:纯尿素在土壤中经过20 h溶解85%,而含尿素81.5%(40.9%)的生物降解型膨化缓释肥料经过相同时间释放1.3%(0.8%),释放速率仅为纯尿素的1/65.38(1/106.25).
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| 关 键 词： | 生物降解 膨化技术 缓释化肥 |
| 文章编号： | 1673-095X（2007）04-0024-03 |
| 收稿时间： | 2006-01-23 |
| 修稿时间： | 2006-01-23 |
Preparation and application of control-released urea as a bulked biodegradable fertilizer |
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| LI Man,SUN Guang-yuan,SUN You-guang,BI Ji-wei,ZHANG Jing-yi. Preparation and application of control-released urea as a bulked biodegradable fertilizer[J]. Journal of Tianjin University of Technology, 2007, 23(4): 24-26 |
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| Authors: | LI Man SUN Guang-yuan SUN You-guang BI Ji-wei ZHANG Jing-yi |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300191, China; 2. College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | A new controlled-release fertilizer was prepared by puffing industrial and agricultural offal such as deteriorated corn,bottom oil,which can not cause secondary pollution.The experimental results showed that 85% of pure urea was dissolved in soil after 20 hours,whereas 1.3% and 0.8% of urea were released from the biodegradable controlled-release fertilizers containing urea 81.5% and 40.9% respectively after the same time.The releasing rate with respect to pure urea was 1/65.38 and 1/106.25. |
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| Keywords: | biodegradable expanding technology control-released fertilizer |
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