土壤微塑料影响植物生长的因素与机制研究进展

土壤中的微塑料可通过多种方式影响植物生长，并且其在植物体内积累会最终通过食物链进入人体，厘清微塑料对植物生长的影响及机制，有助于系统掌握其在土壤-植物体系中的环境行为。微塑料的赋存状态和理化特征均可影响其对植物的作用效果，本文从粒径、形状、浓度、种类、塑料添加剂和老化程度等方面，梳理了土壤微塑料影响植物生长的主要因素及作用机制，并对未来研究的重点内容提出展望，以期为进一步明晰微塑料对土壤生态系统的影响提供参考。

Research progress on the influencing factors and mechanisms of soil microplastics on plant growth

Microplastics in soil can affect plant growth in a variety of ways, accumulate in plants, and eventually enter the human body via the food chain. Clarifying the mechanisms and main factors whereby microplastics influence plant growth can contribute to a systematic understanding of their environmental behavior in soil-plant systems. Both the occurrence state and physicochemical characteristics of microplastics can influence their effects on plants. In this paper, from the perspectives of particle size, shape, concentration, and type, plastic additives, and aging degree of microplastics, we review the main factors and mechanisms underlying the effects of soil microplastics on plant growth. The key direction of future research is proposed, which will provide a reference for further clarifying the impact of microplastics on soil ecosystems.