摘要
【目的】以河北曹妃甸基本农田示范区为研究对象,分析测定农田土壤基本性质和重金属含量,并依据《国家土壤环境质量二级标准》和《农田土壤环境质量监测技术规范》的要求,进行农田土壤重金属污染现状评价。【方法】依据评价结果,考虑各种治理方案可行性、研究区工程地质特点和农业生产需要,按照污染防治优先、分区优化整理的设计理念,将土地整理与污染修复有机结合,形成挖填土方混合调配修复技术方案,并对其综合效益进行量化评价。【结果】研究区各项指标均有利好变化,其中作物单产增加975.22 kg/hm2、土地利用率提高12.52%、污染修复率达到37.68%。【结论】实现了改善农田土壤环境和提高土地利用率的双重效益,为今后土地综合开发整治工作的进一步开展提供一定的参考和借鉴。
[Objective] Based on the contents of soil basic properties and heavy metals by collecting sam- ples for testing, the farmland of Caofeidian in Hebei Province, was appraised by referring to the na- tional criteria for evaluation of soil environmental quality. [Method] According to evaluation results, which including local agricultural production conditions, engineering geology characteristics of farmland and the feasibility of different repairment techniques were comprehensively considered, and chosen mixing deployment earthwork repair technology program which combine the land consolidation and pollution remediation, with the design philosophy of pollution prevention priority and partition optimization con- solidation. At the same time, it was quantified evaluation of its comprehensive benefits. [Result] Re- sults showed that： all the indicators had positive changes in the study area, including crop yield in- creased by 975.22 kg/hm2, land utilization efficiency increased by 12.52% and remediation rate up to 37.68%. [Conclusion] The project should achieve the double improvements of soil environment and land utilization, and provided the scientific reference for land integrated consolidation work in the future.
出处
《四川农业大学学报》
CSCD
北大核心
2016年第2期210-214,共5页
Journal of Sichuan Agricultural University
基金
河北省唐山市科技支撑计划重大项目"基于土地整理工程的农田污染综合防治技术研究"(No.14120202a)
关键词
农田土壤
重金属污染修复
土地整理
farmland soil
heavy metals pollution repairment
land consolidation
