文献类型：期刊文献

中文题名：环境因素对甲壳素包裹缓释肥料养分释放特性的影响

英文题名：Effects of environmental actors on nutrient release characteristic of chitosan coated slow release fertilizers

作者：夏玮[1];张文清[1];赵显峰[2];王文青[1]

机构：[1]华东理工大学化学与分子工程学院;[2]华东理工大学药学院,上海200237

年份：2009

卷号：29

期号：8

起止页码：4560

中文期刊名：生态学报

外文期刊名：Acta Ecologica Sinica

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：上海市科委重点攻关资助项目(073919109);上海市重点学科建设资助项目(B507)

语种：中文

中文关键词：甲壳素;包裹尿素;蒸汽压;土壤水分;温度;土壤pH值;释放特性

外文关键词：chitin; coated urea; water vapor pressure; soil moisture; temperature; soil pH; release characteristic

摘要：探讨了土壤中水分、温度、pH值及水蒸气压、介质盐分浓度对甲壳素包裹肥料（CCF）养分释放特性的影响。结果表明：CCF具有良好的缓释效果,养分释放速率与包裹层内水蒸气压差呈线性关系;CCF的养分释放速率随介质盐分浓度的增高而降低,随着土壤水分的增加而增大,并随着温度的升高而增大,温度每提高10℃,养分释放速率提高约1.3~1.4倍,但不同温度下养分累积释放曲线具有相似性和规律性。土壤pH值对CCF养分释放速率的影响不显著。
The experiments for nutrient release of chitosan coated slow release fertilizers（CCF） were carried out to elucidate the effects of soil moisture,temperature,and soil pH,water vapor pressure and ion concentration on nutrient release characteristic of CCF.The results showed that CCF was a good slow-release fertilizer.The nutrient release rate was linearly related to the water vapor pressure,and it was decreased with the increase of the ion concentration of liquid medium.With the increase of soil moisture,the nutrient release rate was increased Nutrient release rate of CCF was increased with the increasing incubation temperature,and when the temperature enhanced every 10℃,the nutrient release rate would enhance approximately 1.3-1.4 times.However,the cumulative release curves of CCF at the different temperature were of similarity and regularity.The effect of soil＇s pH on the nutrient release rate of CCF was not significant.