| 桐油包膜尿素单个颗粒养分释放行为的研究 |
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| 引用本文： | 唐辉,尤坚萍,张晓春,王亚明,戈振扬. 桐油包膜尿素单个颗粒养分释放行为的研究[J]. 化肥工业, 2009, 36(3): 33-38 |
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| 作者姓名： | 唐辉 尤坚萍 张晓春 王亚明 戈振扬 |
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| 作者单位： | 云南昆明理工大学化学工程学院,650224;云南昆明理工大学现代农业工程学院,650224 |
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| 基金项目： | 国家自然科学基金资助项目，云南省自然科学基金资助项目 |
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| 摘 要： | 桐油包膜尿素单个颗粒的养分表现出3个阶段释放规律，即时滞期、线性释放期和衰退释放期，养分释放具有由扩散机理支配的S形逐步释放特征。尽管粒径和包膜厚度存在差异，包膜尿素单个颗粒的养分释放不同。但是由30-90颗包膜尿素颗粒构成的6个包膜尿素颗粒群的养分释放行为却非常接近。
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| 关 键 词： | 桐油包膜尿素 养分 释放行为 研究 |
Study of Nutrient Release from Single Granules of Tung Oil-Coated Urea |
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| Tang Hui,You Jianping,Zhang Xiaochun,Wang Yaming,Ge Zhenyang. Study of Nutrient Release from Single Granules of Tung Oil-Coated Urea[J]. Journal of the Chemical Fertilizer Industry, 2009, 36(3): 33-38 |
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| Authors: | Tang Hui You Jianping Zhang Xiaochun Wang Yaming Ge Zhenyang |
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| Affiliation: | Tang Hui , You Jianping , Zhang Xiaochun, Wang Yarning, Ge Zhenyang ( 1. Faculty of Biological and Chemical Engineering, Kunming University of Science and Technology 650224; 2. Faculty of Modern Agriculture Engineering, Kunming University of Science and Technology 650224) |
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| Abstract: | Single granules of tung oil-coated urea show a pattern of three stages of nutrient release, viz. , the delay stage, linear release stage and decay period, and the nutrient release has the characteristics of an S-type gradual release controlled by the dispersion mechanism. In spite of the differences in particle size and coating thickness, the nutrient release of single granules of coated urea is also different, but the 6 groups of coated urea granules composed of 30 - 90 coated urea granules have nearly the same nutrient release behavior. |
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| Keywords: | tung oil-coated urea nutrient release behavior study |
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