摘要
采用育苗基质中添加邻苯二甲酸二丁酯(DBP)和邻苯二甲酸二异丁酯(DIBP)模拟辣椒自毒作用,通过分析辣椒根系生理特性的变化,探讨热改性凹土、酸改性凹土和十六烷基三甲基溴化铵(HDTMA-Br)改性凹土对辣椒自毒作用的修复效果。结果发现,改性或未改性凹土在不同程度上能修复辣椒的自毒作用,体现在辣椒根系活力增强、活跃吸收面积增大,MDA含量降低和SOD、CAT和POD等保护酶活性增强,其中,有机改性凹土由于其对有机物良好的吸附性,能有效降低DBP/DIBP在环境中的迁移和生物有效性,修复效果最好。
Dibutyl phthalate （ DBP ） and diisobutyl phthalate （ DIBP ） were added to the seedling matrix to sim- ulate the autotoxicity of pepper. Root physiological characteristics were studied to investigate the remediation effect of attapulgite treated by heat, acid and hexadecyltrimethylammonium （ HDTMA） , respectively. Results showed that different attapulgite treatments could alleviate the DBP/DIBP autotoxicity in pepper on different de- gree. It was reflected in the stronger root activity, bigger active absorption area, lower MDA content, and stron- ger activity of SOD, CAT and POD. HDTMA - modified attapulgite was most effective to autotoxicity for its ab- sorptive capacity to organic pollutants, which could help to reduce the mobility and biological effectiveness of DBP/DIBP.
出处
《淮阴工学院学报》
CAS
2015年第1期1-4,17,共5页
Journal of Huaiyin Institute of Technology
基金
江苏省科技支撑计划(农业)项目(BE2013376)
江苏省大学生实践创新计划项目(201311049055X)
