蔬菜种类和种植年限对土壤重金属含量的影响

The Effects of Vegetables and Planting Years on the Soil Heavy Metal Contents of Mulching Cropping

选择典型蔬菜种植区,调查并分析了不同蔬菜种类和种植年限对菜田土壤重金属含量的影响。结果表明:种植年限对菜田土壤重金属含量的影响微弱;种植果菜和叶菜的菜田,土壤重金属含量较小;根菜类菜田的土壤重金属含量与果菜和叶菜类菜田差异明显。永年县菜田土壤As的含量以及定州市菜田土壤Pb和Cd的含量变化明显,应引起足够重视,加强监测预警。

Based on the importance of soil heavy metal content to vegetable quality and the incomprehension about the effects of vegetables and planting years on soil heavy metal contents, two representative areas of vegetable planting region were choose for this study, The research results were as follows. 1. Planting years affected the soil heavy metal contents faintly. 2. Fruit vegetables and leaf vegetables had similar effects on soil heavy metal contents, but were abviously different with root vegetables. 3, Pb, Cd content in Yongnian changed distinctly with that in Dingzhou, this should be paid more attention to monitoring.