重金属污染威胁土壤安全：现状、危害及防治

In recent decades, with the rapid development of science and technology, mining, smelting, industrial production, and the unregulated use of chemical fertilizers and organic fertilizers in agriculture have led to increasingly serious heavy metal pollution. As a result, the quality and safety of soil have become more and more severe. Agricultural land is one of the most important natural resources for humans. Once agricultural land is contaminated by heavy metals, a large amount of time and money is needed to restore it, which inevitably leads to agricultural products exceeding the standard of heavy metal content. This will have an impact on human health through the food chain. Therefore, it is crucial to take measures to prevent heavy metal pollution and protect the quality and safety of soil.