In order to remediate the phytotoxicity of quinclorac to tomato by multi-walled carbon nanotubes (MWCNTs), the adsorption of quinclorac to MWCNTs was monitored and the effect of MWCNTs on the phytotoxicity of quinclorac to tomato in soil were studied. The results showed that the Linear equation and Freundlich equation can well fit the adsorption isotherm of quinclorac in the soil containing MWCNTs. The adsorption of quinclorac in soil was significantly enhanced by the addition of MWCNTs; the K_d of soil (1% MWCNTs) was 28.7 times of pure soil. The quinclorac had an obvious inhibitory effect on the growth of tomatoes; serious phytotoxicity was also induced even at the lowest concentration of 0.025 mg/kg. With the MWCNTs content in soil increased to 0.5% and 1%, the phytotoxicity of quinclorac to tomatoes decreased significantly, and the height and fresh weight of tomatoes were even higher than those of the control group, indicating that MWCNTs can promote the growth of tomato. These results provide a reference for resolving the problem of phytotoxicity induced by residual herbicides in farmland.

为通过多壁碳纳米管（MWCNTs）修复二氯喹啉对番茄的药害，监测了多氯酚酸对多壁碳纳米管的吸附，研究了多壁碳纳米管对土壤中二氯喹啉对番茄药害的影响。结果表明，线性方程和Freundlich方程能很好地拟合双氯喹在含MWCNTs土壤中的吸附等温线。添加多壁碳纳米管显着增强了喹氯酸在土壤中的吸附；K _d土壤（1% MWCNTs）是纯土壤的 28.7 倍。喹氯酸对番茄的生长有明显的抑制作用；即使在 0.025 mg/kg 的最低浓度下也会引起严重的植物毒性。随着土壤中MWCNTs含量分别增加到0.5%和1%，双氯喹对番茄的药害显着降低，番茄的株高和鲜重甚至高于对照组，说明MWCNTs可以促进番茄的生长。 . 这些结果为解决农田残留除草剂引起的药害问题提供了参考。