ABSTRACT I summarised cadmium concentrations from soil samples collected by the fertiliser industry between 2006 and 2015, and from soil samples collected by regional councils. Using these data, a statistical model was used to estimate soil cadmium concentrations on agricultural land within each territorial authority. Across New Zealand, most territorial authorities (56 of 66), including all the South Island, had mean soil cadmium concentrations below 0.6 mg Cd/kg. The highest mean soil cadmium values on agricultural land were in the Otorohanga and Matamata-Piako districts (0.90 and 0.89 mg Cd/kg, respectively). In these districts, around 1% of properties were estimated to have mean soil cadmium in excess of 1.8 mg Cd/kg. The fertiliser industry requires that cadmium concentrations in phosphate fertiliser are below a voluntary limit of 280 mg/kg P. The mean cadmium concentration in fertiliser samples taken between 2003 and 2015 was 184 mg Cd/kg P, 66% of the voluntary limit.

中文翻译：

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新西兰农业土壤中的镉

摘要 我总结了 2006 年至 2015 年肥料行业收集的土壤样本以及区域委员会收集的土壤样本中的镉浓度。使用这些数据，使用统计模型来估计每个领土当局内农业用地的土壤镉浓度。在整个新西兰，包括整个南岛在内的大多数地区当局（66 个中的 56 个）的平均土壤镉浓度低于 0.6 mg Cd/kg。农业用地土壤平均镉值最高的是 Otorohanga 和 Matamata-Piako 地区（分别为 0.90 和 0.89 mg Cd/kg）。在这些地区，估计约有 1% 的土地平均土壤镉含量超过 1.8 毫克 Cd/kg。化肥行业要求磷肥中的镉浓度低于 280 mg/kg P 的自愿限值。