土壤与作物2026，Vol.15Issue(1)：53-59,7.DOI:10.11689/sc.2025052601
蚯蚓生长和氧化应激对微塑料添加的响应
Responses of earthworm growth and oxidative stress to microplastic addition
摘要
Abstract
With the wide application of agricultural plastic mulch film in China's farmland,the accumulation of microplastics in farmland soil environment is increasing.The toxic effects of different types and quantities of microplastic residues on soil organisms are still unknown.To explore the issues,an indoor culture experiment was carried out.In this study,earthworms were exposed to three different plastic films(polyethylene(PE),polyethylene terephthalate-butylene adipate(PBAT),polybutylene terephthalate-adi-pate+polylactic acid(PBAT+PLA))with four concentration gradients(0,0.5%,1%,2%)in the soil.The changes of earthworm biomass,antioxidant enzyme activities including glutathione,glutathione-S-transferase,peroxidase,superoxide dismutase,catalase,malondialdehyde(MDA)and reactive oxygen species were examined to evaluate the biological toxicity of microplastics.With the increase in microplastic concentration,the earthworm biomass shows a trend of initial increase and then decline.In the convalescent period,the MDA of PBAT at 2%concentration is significantly increased by 34.9%compared with CK,showing more severe oxida-tive damage.The addition of microplastics significantly increases all antioxidant enzyme activities simultaneously.The addition of three types of microplastics increases the toxicity risk of earthworms,while the biological injury caused by PBAT is more severe than PE.This study provides theoretical basis in evaluating the ecological risks from different types of microplastic and their residual concentrations.关键词
微塑料/蚯蚓/生物量/抗氧化酶活性Key words
microplastics/earthworm/biomass/antioxidant enzyme activity分类
农业科技引用本文复制引用
曲宜池,王培欣,赵宝平,杨帆,牛磊,董贺军,钱亚光..蚯蚓生长和氧化应激对微塑料添加的响应[J].土壤与作物,2026,15(1):53-59,7.基金项目
财政部和农业农村部:国家现代农业产业技术体系(CARS-07) （CARS-07）
内蒙古自治区重大协同推广项目:内蒙古农田地膜科学使用及高效回收处理技术集成与示范推广. （）
