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中文摘要：
利用GPS定位选取河北省安平县京安猪场废水连续灌溉8a的污灌区的36个样点,采用模糊综合评价模型对规模化猪场废水长期灌溉农田土壤重金属（Zn、Cu、Pb、Cr和As）污染状况进行了评价。结果表明,研究区36个采样点的土壤环境质量级别绝大部分为Ⅰ级（清洁）,土壤未受到严重污染,但个别采样点土壤环境质量级别达到Ⅲ级（轻污染）,呈现污染趋势,说明长期灌溉猪场废水,存在一定的土壤重金属污染风险。
英文摘要：
With the rapid development of seale swine-farms in China, the swine waste which is brought by intensive hoggery is disposed in farmland soils around swine farm region. Due to plentiful heavy metals in swine wastewater, heavy metals can be accumulated in soils if longterm and large quantity swine wastewater is applied. The assessment of heavy metal pollution is an important issue in the research of heavy metal pollution in soil. According to the graduated feature and fuzzy feature in the degree of soil heavy metals＇ pollution, the fuzzy comprehensive assessment model was used to assess the heavy metals（Zn, Cu, Pb, Cr, and As） pollution in soils. 36 soil samples in the plough hori- zon（0-20 cm ） of irrigation farmland which had been applied swine wastewater of Jing＇ an swine-farm 8 years were collected using GPS technology in An＇ping County, Hebei Province, and the fuzzy comprehensive assessment model was used to evaluate the heavy metals pollution in soils. The results indicated that most of the samples＇ soil environmental quality were belonged to cleanliness（ grade one ）, while two soil samples were on the level of slight pollution（ grade three ）and presented the pollution tendency. After 8 years swine wastewater application, attention should be paid to the pollution risks of heavy metal in the soil.
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