当前位置: 首页 > 文章 > 甲壳素包裹型缓释肥料养分释放特性研究 安徽农业科学 2008,36 (23) 10059-10060+10181
Position: Home > Articles > Study on Nutrient Slow Release Characteristics of Chitosan Coated Slow Release Fertilizers(CCF) Journal of Anhui Agricultural Sciences 2008,36 (23) 10059-10060+10181

甲壳素包裹型缓释肥料养分释放特性研究

作  者:
曹嘉洌;刘书琦;王文青;张文清
单  位:
华东理工大学化学与分子工程学院
关键词:
甲壳素;包裹尿素;释放特性;拟合
摘  要:
[目的]研究甲壳素包裹型缓释肥料(CCF)的养分释放特性。[方法]通过对CCF在30℃水中的进行释放试验,来描述其养分释放特性。[结果]结果表明,可将CCF的释放过程分为稳定阶段和衰退阶段;CCF在水中的溶出曲线为L型,且观察不到明显的滞后阶段;在稳定阶段,释放速率dMt/dt为一定值;在衰退阶段,释放速率随时间的延长而下降,且下降趋势逐渐缓慢,可以描述为dMt/dt=29.337t-1。[结论]CCF具有长效,缓释的作用,能够促进农作物的稳定生长,而实现作物的增产。
译  名:
Study on Nutrient Slow Release Characteristics of Chitosan Coated Slow Release Fertilizers(CCF)
作  者:
CAO Jia-lie et al(School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 200237)
关键词:
Chitin;Coated urea;Release characteristics;Fitting
摘  要:
[Objective] The research aimed to study the nutrient slow release characteristics of chitosan coated slow release fertilizers(CCF).[Method] The release experiment of CCF was carried out in water at 30 ℃ to give a description of nutrient release characteristics.[Result] The results showed that the processes of nutrient release from CCF could be divided into two stages: Steady stage and decay stage.The nitrogen release curve of CCF was in L-shape,the lag stage did not occur in the processes of CCF release.At steady stage,the release rate dMt/dt value was not a variable,but at decay stage,the value of dMt/dt varied with the variation of time,and it could be described by the equation dMt/dt=29.337t-1.[Conclusion] The CCF showed a long-term effective nutrient with balance due to the slow release.Therefore,it could promote plants growth and increase the yield of crops.

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