| 壳聚糖包膜缓释钾肥的初步研究 |
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| 引用本文： | 何海斌,王海斌,陈祥旭,方长旬,甘邱锋,吴文祥.壳聚糖包膜缓释钾肥的初步研究[J].亚热带农业研究,2006,2(3):194-197. |
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| 作者姓名： | 何海斌 王海斌 陈祥旭 方长旬 甘邱锋 吴文祥 |
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| 作者单位： | 福建农林大学生命科学学院,福建,福州,350002 |
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| 基金项目： | 福建省科技厅资助项目(K200039、K02046) |
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| 摘 要： | 以壳聚糖和KC l为主要原料制备壳聚糖包膜KC l的微球,测定了微球在25℃水中浸泡后K+的释放速率,并应用扫描电子显微镜对浸泡前后微球表面膜结构进行表征。结果表明:壳聚糖对K+的包埋率达到97.08%;K+释放量增量表现为,1-4 d快速上升,5-59 d稳定上升,60 d后开始减缓。扫描电镜观察结果表明:微球浸泡前表面膜结构密实;浸泡73 d后微球表面膜形成大量突起、均匀的小孔。24和28 d包膜微球在水中的释放量均符合缓释肥料标准。
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| 关 键 词： | 壳聚糖 KCl 缓释肥料 |
| 文章编号： | 1673-0925（2006）03-0194-04 |
| 收稿时间： | 2006-03-13 |
| 修稿时间： | 2006年3月13日 |
The preliminary study on the slow-release fertilizer of potassium coated by chitosan |
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| HE Hai-bin,WANG Hai-bin,CHEN Xiang-xu,FANG Chang-xun,GAN Qiu-feng,WU Wen-xiang.The preliminary study on the slow-release fertilizer of potassium coated by chitosan[J].Subtropical Agriculture Research,2006,2(3):194-197. |
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| Authors: | HE Hai-bin WANG Hai-bin CHEN Xiang-xu FANG Chang-xun GAN Qiu-feng WU Wen-xiang |
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| Institution: | College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China |
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| Abstract: | The micro-ball of potassium coated by chitosan was prepared by using chitosan and potassium chloride as materials.The K~+ releasing rates of the micro-ball soaked in water(25 ℃) were detected and the apparent shapes of the micro-ball were examined by scanning electron microscope(SEM).The results showed that,the enveloped rate of K~+ in the micro-ball was 97.08%;the K~+ releasing curve was performed ascending sharply in 1-4 days,then climbing stably in 5-59 days and rising slowly after 60 days.The SEM results showed that the surface of micro-ball was compact and tight before soaked in water,but porous and expansile after soaked 73 days in water.The properties of micro-ball measure up to the criterion of slow-release fertilizers. |
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| Keywords: | chitosan potassium chloride slow-release fertilizer |
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