Abstract：
Plastic film mulching can maintain soil water and heat conditions, promote plant growth and thus generate considerable economic benefits in agriculture. However, as they age, these plastics degrade and form microplastics (MPs). Additionally, pesticides are widely utilized to control organisms that harm plants, and they can ultimately enter and remain in the environment after use. Pesticides can also be sorbed by MPs, and the sorption kinetics and isotherms explain the three stages of pesticide sorption: rapid sorption, slow sorption and sorption equilibrium. In this process, hydrophobic and partition interactions, electrostatic interactions and valence bond interactions are the main sorption mechanisms. Additionally, small MPs, biodegradable MPs and aged conventional MPs often exhibit stronger pesticide sorption capacity. As environmental conditions change, especially in simulated biological media, pesticides can desorb from MPs. The utilization of pesticides by environmental microorganisms is the main factor controlling the degradation rate of pesticides in the presence of MPs. Pesticide sorption by MPs and size effects of MPs on pesticides are related to the internal exposure level of biological pesticides and changes in pesticide toxicity in the presence of MPs. Most studies have suggested that MPs exacerbate the toxicological effects of pesticides on sentinel species. Hence, the environmental risks of pesticides are altered by MPs and the carrier function of MPs. Based on this, research on the affinity between MPs and various pesticides should be systematically conducted. During agricultural production, pesticides should be cautiously selected and used plastic film to ensure human health and ecological security.
摘要：
地膜覆盖可以保持土壤水分和热量条件，促进植物生长，从而在农业中产生可观的经济效益。然而,随着年龄的增长，这些塑料降解并形成微塑料(MPs)。此外,农药被广泛用于控制危害植物的生物，使用后，它们最终可以进入并留在环境中。农药也可以被MP吸附，吸附动力学和等温线解释了农药吸附的三个阶段：快速吸附，缓慢的吸附和吸附平衡。在这个过程中,疏水和分区相互作用，静电相互作用和价键相互作用是主要的吸附机制。此外,小议员,可生物降解的MPs和老化的常规MPs通常表现出较强的农药吸附能力。随着环境条件的变化,特别是在模拟生物介质中，农药可以从MP中解吸。环境微生物对农药的利用是控制MPs存在下农药降解速率的主要因素。MPs对农药的吸附和MPs对农药的大小效应与生物农药的内部暴露水平和MPs存在下农药毒性的变化有关。大多数研究表明，MP会加剧农药对哨兵物种的毒理学影响。因此，MPs和MPs的载体功能改变了农药的环境风险。基于此,应系统地研究MPs与各种农药之间的亲和力。在农业生产中,农药应谨慎选择和使用塑料薄膜，以确保人类健康和生态安全。
