<br>磷肥施用减轻了微塑料对土壤微生物和水稻生长的负面影响,Journal of Hazardous Materials

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磷肥施用减轻了微塑料对土壤微生物和水稻生长的负面影响
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2023-12-16 , DOI: 10.1016/j.jhazmat.2023.133278
Qi-Lu Zhuang ₁ , Hai-Yan Yuan ₁ , Jian-Qing Qi ₁ , Zhao-Ran Sun ₁ , Bao-Xian Tao ₁ , Bao-Hua Zhang ₁

Affiliation

土壤微塑料（MP）最近引起了广泛关注。大多数研究都探讨了土壤 MP 如何影响土壤的物理化学参数、物质循环和土壤微生物群落组装。同样，农业发展中的一个关键问题是磷（P）肥料的使用，这对植物健康和发育至关重要。然而，MP 和磷肥之间的关系及其对土壤环境和植物生长的影响仍然难以捉摸。本研究评估了添加不同磷肥施用量的低密度聚乙烯 MP （1%）对微生物群落和水稻生物量的影响。我们的结果表明，在相同水平的 P 肥处理中，MPs 改变了土壤细菌和含有 phoD 的微生物群落的结构，并抑制了含有 phoD 的微生物的相互作用。此外，我们发现 MPs 污染抑制了水稻生长;然而，在 MP 污染的土壤中添加 P 肥减少了 MP 对水稻生长的抑制作用，这可能是因为 P 肥的存在促进了水稻在 MP 污染土壤中对 NO3--N 的吸收。我们的结果为在广泛的 MPS 污染和全球磷资源限制的背景下指导农业生产、改善农业管理和合理施用磷肥提供了进一步的见解。

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Phosphorus fertiliser application mitigates the negative effects of microplastic on soil microbes and rice growth

Soil microplastics (MPs) have attracted widespread attention recently. Most studies have explored how soil MPs affect the soil's physicochemical parameters, matter circulation, and soil microbial community assembly. Similarly, a key concern in agricultural development has been the use of phosphorus (P) fertiliser, which is essential for plant health and development. However, the relationship between MPs and phosphate fertilisers and their effects on the soil environment and plant growth remains elusive. This study assessed the influence of adding low-density polyethylene MPs (1%) with different phosphate fertiliser application rates on microbial communities and rice biomass. Our results showed that MPs changed the structure of soil bacterial and phoD-harbouring microbial communities in the treatment with P fertiliser at the same level and suppressed the interactions of phoD-harbouring microorganisms. In addition, we found that MPs contamination inhibited rice growth; however, the inclusion of P fertiliser in MP-contaminated soils reduced the inhibitory action of MPs on rice growth, probably because the presence with P fertiliser promoted the uptake of NO3--N by rice in MP-contaminated soils. Our results provide further insights into guiding agricultural production, improving agricultural management, and rationally applying phosphate fertilisers in the context of widespread MPs pollution and global P resource constraints.

更新日期：2023-12-16

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