摘要
利用前期的化学材料、牧草筛选研究成果,构建2种新的农田修复种植模式,并开展为期3年的修复效果研究。结果表明,强化吸收的间作模式农田修复效果较好,促控结合的间作模式经济效益好于当地种植模式,且3年种植之后2种模式下玉米籽粒中重金属As、Cd的含量均满足《粮食卫生标准》(GB2719-2005)要求,土壤施加硫磺和农大菌剂,并种植狼尾草3年的地块其土壤中苊、荧蒽、苯并(a)芘、As、Cd、Pb含量分别降低62.28%,67.95%,69.04%,23.91%,21.79%,24.67%。
Based on the previous research by screening of chemical materials and grazing, two types farmland restoration planting patterns were constructed. And a three-year restoration effect research had carried out. Experimental results showed that the intercropping and rotation modes with accumulation strengthen had better farmland remediation effects, the intercropping modes with combination of promotion and control had better economic benefit than local planting pattern, the As, Cd, Pb contents in the edible part of crops planted two designed modes met the standards after three-year growth of the crops. The pollutants in soil treated with sulphur, enzyme microorganism and Nongda microbial agent and planted with Pennisetum clandestinum decreased obviously. The contents of acenephthene, fluoranthene, BaP, As, Cd and Pb in the treated soil decreased by 62.28%, 67.95%, 69.04%, 23.91%, 21.79%, 24.67%, respectively.
出处
《水土保持学报》
CSCD
北大核心
2014年第2期180-184,242,共6页
Journal of Soil and Water Conservation
基金
山西省科技攻关项目(20110311021)
山西省自然科学基金项目(20130110407)
关键词
污水灌溉
种植模式
土壤修复
sewage water irrigation
planted pattern
soil remediation
