| 泡腾颗粒药肥中除草剂的释放特性 |
| |
| 引用本文： | 化全县,胡斌,汤建伟,刘咏,王立锁.泡腾颗粒药肥中除草剂的释放特性[J].科技导报(北京),2011,29(26):30-33. |
| |
| 作者姓名： | 化全县 胡斌 汤建伟 刘咏 王立锁 |
| |
| 作者单位： | 1. 郑州大学化工与能源学院国家钙镁磷复合肥技术研究推广中心,郑州 450001;2. 中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室,南京 210008 |
| |
| 摘 要： | 为提高颗粒药肥中除草剂的释放性能,制备了具有泡腾特性的除草药肥颗粒,以亚甲基蓝比色法评价其泡腾特性,研究了除草药肥颗粒中苯噻酰草胺和苄嘧磺隆的释放过程.结果表明,颗粒药肥具有显著的泡腾作用,苯噻酰草胺和苄嘧磺隆释放平衡时间为15和11min,仅为传统型颗粒药肥的33.3%和36.7%.两种除草剂的释放过程均遵循双常数方程和Logistic方程,且相关性达到极显著水平(P<0.001),释放速率由液膜扩散和颗粒内扩散联合控制.
|
| 关 键 词： | 颗粒药肥 泡腾 苯噻酰草胺 苄嘧磺隆 释放动力学 |
| 收稿时间： | 2011-06-03 |
Release Kinetics of Herbicide in Fertilizer-herbicide Granules with Effervescent Characteristics |
| |
| HUA Quanxian,HU Bin,TANG Jianwei,LIU Yong,WANG Lisuo.Release Kinetics of Herbicide in Fertilizer-herbicide Granules with Effervescent Characteristics[J].Science & Technology Review,2011,29(26):30-33. |
| |
| Authors: | HUA Quanxian HU Bin TANG Jianwei LIU Yong WANG Lisuo |
| |
| Institution: | 1. National Centre of Research & Popularization on Calcium, Magnesium, Phosphate and Compound Fertilizer Technology, School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China;2. State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China |
| |
| Abstract: | The fertilizer-herbicide granule with effervescent agent coating was prepared to increase the herbicide release rate. The effervescency of the granule enjoys a remarkable performance, which was evaluated with the methylene blue spectrophotometric method. The experiments revealed the release kinetics of mefenacet and bensulfuron-methyl (BSM) in the granule. The results show that the release equilibration time of mefenacet and bensulfuron-methyl in the effervescent granule is 15 and 11min, respectively, 33.3% and 36.7% of that in the common fertilizer-herbicide granule. The release kinetics of mefenacet and bensulfuron-methyl follows the dual constant equation and Logistic equation, with a correlation coefficients highly significant (P< 0.001). Their release rates are controlled by the Boyd film diffusion model and the Kannan-Sundaram intraparticle diffusion one. |
| |
| Keywords: | fertilizer-herbicide granule effervescent mefenacet bensulfuron-methyl release kinetics |
|
| 点击此处可从《科技导报(北京)》浏览原始摘要信息 |
| 点击此处可从《科技导报(北京)》下载免费的PDF全文 |
|
