National Soil Fertility and Fertilizer Effects Long-term Monitoring Network, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China.
Environ Toxicol Chem. 2013 Oct;32(10):2372-8. doi: 10.1002/etc.2312.
The toxicity of copper (Cu) and nickel (Ni) to bok choy and tomato shoot growth was investigated in a wide range of Chinese soils with and without leaching with artificial rainwater. The results showed that the variations of Ni toxicity induced by soil properties were wider than those of Cu toxicity to both tomato and bok choy plant growth. Leaching generally decreased the toxicity of Cu and Ni added to soils, which also depended on soils, metals, and test plant species. Soil factors controlling metal phytotoxicity were found to be soil pH and soil organic carbon content for Cu, and soil pH for Ni. It was also found that soil pH had stronger effects on Ni toxicity than on Cu toxicity. Predictive toxicity models based on these soil factors were developed. These toxicity models for Cu and Ni toxicity to tomato plant growth were validated using an independent data set for European soils. These models could be applied to predict the Cu and Ni phytotoxicity in not only Chinese soils but also European soils.
采用人工模拟降雨淋洗的方法，研究了铜（Cu）和镍（Ni）在一系列中国土壤中的毒性，这些土壤有的未淋洗，有的经过淋洗。结果表明，Ni 毒性随土壤性质的变化比 Cu 毒性对番茄和白菜生长的影响更为广泛。淋洗通常会降低添加到土壤中的 Cu 和 Ni 的毒性，但这也取决于土壤、金属和受试植物的种类。研究发现，控制金属植物毒性的土壤因素为土壤 pH 值和土壤有机碳含量（Cu）和土壤 pH 值（Ni）。还发现，土壤 pH 值对 Ni 毒性的影响比 Cu 毒性更强。基于这些土壤因素，建立了预测毒性模型。利用欧洲土壤的独立数据集对番茄植株生长的 Cu 和 Ni 毒性预测模型进行了验证。这些模型不仅可以应用于预测中国土壤，还可以应用于预测欧洲土壤的 Cu 和 Ni 植物毒性。
