大豆和玉米根和土壤酶活动对生物降解微塑料污染土壤的反应
Yao Yu1, Yanhua Chen2, Yan Wang3
1College of Natural Resources and Environment, Northwest A&F University, 712100 Yangling, China; Soil Physics and Land Management Group, Wageningen University & Research, 6700AA, Wageningen, the Netherlands.
Ecotoxicology and environmental safety
|June 14, 2023
概括
土壤中的可生物降解塑料残留物会损害植物生长,改变土壤酶,可能影响作物产量. 需要进一步的研究,以了解Poly (丁烯基酸盐-co-terephthalate) 微塑料对农业系统的全部影响.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 土壤科学 土壤科学
背景情况:
- 可生物降解的塑料薄膜为农业土壤中的聚乙烯污染提供了潜在的解决方案.
- 然而,它们的残留物对植物发育和土壤健康的影响在很大程度上是未知的.
研究的目的:
- 调查聚 (丁烯基酸盐-协同甲酸盐) 微塑料 (PBAT-MPs) 对大豆和玉米的根性质和土壤酶活性的影响.
- 评估可生物降解微塑料对植物土壤生态系统构成的风险.
主要方法:
- 豆类和玉米种植在土壤中,这些土壤被各种度的PBAT-MPs (0%至1%) 污染.
- 测量了根生长参数 (长度,表面积,生物量) 和土壤酶活动 (C-和N-酶).
- 分析了树叶球和非树叶球土壤样本.
主要成果:
- PBAT-MP污染显著抑制了大豆和玉米的根生长,对玉米的影响更大.
- 对于碳和循环至关重要的土壤酶活动被PBAT-MPs改变了.
- 这些变化表明对营养循环和作物生产率的潜在限制.
结论:
- 可生物降解的塑料残留物对植物土壤系统构成风险.
- 在农业中应用可生物降解塑料薄膜应谨慎处理,因为观察到对植物根和土壤功能的负面影响.
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