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选择3年生西洋参进行田间试验,设计胂·锌·福美双两个施用量以400～600倍药液均匀喷施全株,处理2年后,测定田间土壤样品及西洋参根中砷含量。西洋参根中砷含量与胂·锌·福美双的使用量有显著相关关系,与对照相比,每年施用3～4次胂·锌·福美双,砷含量增加64.52%～101.68%,但低于目前中国药典的相关规定(2mg/kg)。胂·锌·福美双的施用与土壤砷含量无显著相关关系(R2=0.1890)。在相同施用量情况下,随着有机质含量的增加土壤砷含量有所增加。含砷类农药的施用有可能增加西洋参中砷的残留,应尽量减少高含量重金属杀菌剂的应用并关注有关肥料的使用。
Three-year-old American ginseng was selected to conduct a field experiment. Arsenic, zinc and thiram were sprayed on the whole plant with two doses of 400 to 600 times. After two years of treatment, the contents of arsenic in soil samples and American ginseng roots were determined. The content of arsenic in root of Panax quinquefolius was significantly correlated with the amount of arsine, zinc and thiram. Compared with the control, the arsenic, zinc and thiram were applied three to four times per year, the content of arsenic increased by 64.52% ~ 101.68% The current Chinese Pharmacopoeia relevant provisions (2mg / kg). There was no significant correlation between arsenic, zinc and thiram (R2 = 0.1890). With the same application rate, the soil arsenic content increased with the increase of organic matter content. The use of arsenic-containing pesticides may increase residual arsenic in American ginseng, minimize the use of high levels of heavy metal fungicides and focus on the use of fertilizers.