摘要
[目的]对比研究喜氯的特异性植物芹菜和一般作物油菜对有机氯农药DDT污染土壤的修复作用。[方法]通过50d的温室盆栽试验,观察土壤中DDT含量随时间的变化规律。[结果]土壤中DDT的含量均随着时间的延长而逐渐减少。土壤自身具有修复农药污染的自然能力,种植作物具有强化土壤修复DDT污染的作用,种植不同类型的作物能不同程度地提高对土壤中DDT的降解率。空白试验中,土壤中DDT的残留率为79.21%;种植作物后,土壤中的大分子有机物逐渐向小分子过渡,有效降低了有机物的污染。[结论]选择种植喜氯的特异性作物,可提高修复DDT污染土壤的能力。
[Objective] Both celery, a fond chlorine specific plant, and cole, an ordinary plant, have been employed to be contrastively investigated for the remen- dation of soil which was contaminated by dichloro-diphenyl-trichloroethane （DDT）, an organic chlorine pesticide. [Method] The law of the content of DDT contained in the soil changing with time was ob- served by carrying out the glasshouse potted plant experiment in 50 days. [Re- suit] The results showed that the content of DDT contained in the soil decreased with time increasing. Except for the in- stinct remendiation of soil by soil itself, crop growing strengthened the remendia- tion function of soil which contaminated by DDT. In addition, the degradation rate of DDT in soil will be increased by dif- ferent crop planting. The results of the blank test showed that the residual ratio of DDT in soil was 79.21% after 50 days degrading, owing to the larger molecular organics being degraded into smaller molecular weight organics. Therefore, the contamination of soil has been effec- tively decreased. [Conclusion] Celery, a fond chlorine specific plant could im- prove the repair capacity of soil which was contaminated by DDT.
出处
《农业灾害研究》
2012年第6期53-56,62,共5页
Journal of Agricultural Catastrophology
基金
山东省科技攻关项目"土壤中持久性有机污染物原位降解条件的优化研究"(2009GG10006018)
山东省教育厅科技计划项目"基于GIS的矿区土壤重金属污染空间分布规律及评价研究"(J11LE116)
"基于GIS的山东省土壤农药污染空间分布规律及复合降解研究"(J10LE13)
关键词
有机氯农药
DDT
特异性作物
诱导作用
植物修复
降解
Organic chlorine pesti-cide
DDT
Specific plants
Induction
Phytoremediation
Degradation
