农业环境科学学报2017，Vol.36Issue(5)：943-949,7.DOI:10.11654/jaes.2016-1459
鼠李糖脂-混合降解菌强化三角梅去除土壤中对硫磷
Interaction of rhamnolipids-mixed degrading bacteria to enhance removal of parathion from contaminated soils with Bougainvillea speetabilis
摘要
Abstract
Long term production and application of organophosphorus pesticide have resulted in serious soil contamination. A pot culture ex-periment under greenhouse conditions was carried out to investigate the interactive effect of rhamnolipids(RH)addition and mixed degrad-ing bacteria(DB)inoculation on the phytoremediation efficiency of Bougainvillea speetabilis for removal parathion from contaminated soils. Results indicated that rhamnolipids addition and mixed degrading bacteria inoculation could promote the growth of Bougainvillea speetabilis, especially for the underground part of plant. Bougainvillea speetabilis could promote the removal of parathion in soil by 1.6 times compared with the control. In plant treatment, the removal of parathion in soil was increased by rhamnolipids addition and mixed de-grading bacteria inoculation individually, 50 days later, the removal rate of parathion reached 73.01%and 77.13%, respectively, but only 63.23% for control. The combined effect of rhamnolipids addition and mixed degrading bacteria inoculation could promote the removal of parathion up to 91.96%. Parathion uptake by Bougainvillea speetabilis was mainly concentrated in the underground part, the parathion con-centration in aboveground part and underground part reached 153.59, 289.57μg·g-1 in the control treatment, respectively, rhamnolipids ad-dition and mixed degrading bacteria inoculation could reduce parathion accumulation in Bougainvillea speetabilis significantly(P<0.05). In addition, the presence of Bougainvillea speetabilis could promote soil urease activity, catalase activity and alkaline phosphatase activity sig-nificantly(P<0.05), rhamnolipids addition and mixed degrading bacteria inoculation could promote soil enzyme activity in different extent.关键词
对硫磷/污染土壤/三角梅/鼠李糖脂/混合降解菌Key words
parathion/contaminated soil/Bougainvillea speetabilis/rhamnolipids/mixed degrading bacteria分类
资源环境引用本文复制引用
辛鑫,刘家女..鼠李糖脂-混合降解菌强化三角梅去除土壤中对硫磷[J].农业环境科学学报,2017,36(5):943-949,7.基金项目
天津市科技计划项目(14ZCDGSF00033) （14ZCDGSF00033）
教育部创新团队项目(IRT13024) （IRT13024）
Tianjin Science and Technology Project(14ZCDGSF00033):The Program for Innovative Research Team of Ministry of Education of China (IRT13024) （14ZCDGSF00033）
