The extensive use of plastic materials and their improper disposal results in high amounts of plastic waste in the environment. Aging of plastics leads to their breakdown into smaller particles, such as microplastics (MPs) and nanoplastics. This research investigates plastics used in agricultural practices as they contribute to MP pollution in agricultural soils. The distribution and characteristics of MPs in agricultural soils were evaluated. In addition, the effect of MPs on soil properties, the relationship between MPs and metals in soil, the effect of MPs on the fate of pesticides in agricultural soils and the influence of MPs on plant growth were analysed, discussing legume, cereal and vegetable crops. Finally, a brief description of the main methods of chemical analysis and identification of MPs is presented. This study will contribute to a better understanding of MPs in agricultural soils and their effect on the soil-plant system. The changes induced by MPs in soil parameters can lead to potential benefits as it is possible to increase the availability of micronutrients and reduce plant uptake of toxic elements. Furthermore, although plastic pollution remains an emerging threat to soil ecosystems, their presence may result in benefits to agricultural soils, highlighting the principles of the circular economy.

中文翻译：

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农艺实践中使用的微塑料对农业土壤性质和植物功能的影响：对农村地区循环经济的潜在贡献

塑料材料的广泛使用及其处理不当导致环境中产生大量塑料废物。塑料老化会导致其分解成更小的颗粒，例如微塑料 (MP) 和纳米塑料。这项研究调查了农业实践中使用的塑料，因为它们会导致农业土壤中的 MP 污染。评估了农田土壤中 MP 的分布和特征。此外，还分析了MP对土壤性质的影响、MP与土壤中金属的关系、MP对农业土壤中农药归宿的影响以及MP对植物生长的影响，讨论了豆类、谷类和蔬菜作物。最后简要介绍了MPs化学分析和鉴定的主要方法。这项研究将有助于更好地了解农业土壤中的 MP 及其对土壤-植物系统的影响。 MP 引起的土壤参数变化可以带来潜在的好处，因为可以增加微量营养素的可用性并减少植物对有毒元素的吸收。此外，尽管塑料污染仍然是对土壤生态系统的新威胁，但它们的存在可能会给农业土壤带来好处，凸显了循环经济的原则。