农业现代化研究2017，Vol.38Issue(6)：1097-1105,9.DOI:10.13872/j.1000-0275.2017.0109
湖南猕猴桃园土壤重金属含量分析及污染评价
Analysis and safety evaluation of heavy metal contamination in kiwifruit orchard soils in Hunan Province
摘要
Abstract
In order to evaluate the soil environmental condition of kiwifruit orchards in Hunan Province, the levels of Pb (lead), Cd (cadmium), Hg (mercury), As (arsenic), and Cr (chromium) in the soils sampled from 54 orchards in 21 counties (cities) were tested and analyzed by the single factor contaminant index and Nemerrow integrated pollution index method. The results showed that the contents of heavy metals in the top layer soils (0-20 cm) were higher than that in the lower layer soils (20-40 cm). Pb, Cr pollution didn't exist in the main production areas, there were Cd, Hg, and As weak-pollution in some areas, for instance, 31.5% of the orchards were contaminated in varying degrees, 20.4% were above the cordon line and only 48.1% were safety according to the environmental quality standard for soils Ⅱ . Meanwhile, according to green food-environmental quality for production area, the contaminated of Pb, Cd, Hg, As, and Cr index<1 were 68.5%, 66.7%, 72.2%, 74.1%, and 96.3% respectively and the comprehensive pollution index of the orchards were 53.7%, that had reached the green food standards, about 37.0% of orchards soils were minor polluted, and 9.3% were moderately and heavily polluted. Furthermore, there were positive correlations between heavy metals in the top layer soils such as Pb with Hg, Cd, As, and Cr. As with Hg and Cr, which suggested the soil heavy metal pollution was strong homology. The contents of heavy metal was very low in the fruits when Kiwifruit grew in the polluted soils with heavy metals.关键词
猕猴桃园/土壤/重金属/污染评价/绿色食品Key words
kiwifruit orchard/soil/heavy metals/pollution evaluation/green food分类
资源环境引用本文复制引用
杨玉,童雄才,王仁才,汤佳乐,尹春峰,徐海,程小梅..湖南猕猴桃园土壤重金属含量分析及污染评价[J].农业现代化研究,2017,38(6):1097-1105,9.基金项目
国家财政农业资源及生态保护专项(财农〔2014〕63 号). National Finance Foundation of Agricultural Resources and Ecological Protection ([2014]63). （财农〔2014〕63 号）
