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可生物降解的微塑料通过改变根球微生态功能来降低生物肥料的有效性

Xinyang Li¹, Jialing Wu², Xueyu Cheng¹

¹Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, PR China.

Journal of environmental management

|January 21, 2024

概括

生物降解覆微塑料 (PBAT-MPs) 阻碍了生物肥料的有效性,降低了作物产量并改变了土壤微生物. 谨慎使用这些片对于可持续农业至关重要.

科学领域:

农业科学农业科学
环境科学环境科学
土壤微生物学土壤微生物学

背景情况:

生物肥料可以提高作物产量,但会受到土壤污染物的影响.
生物降解的覆盖膜,由聚酸/丁烯四甲酸微塑料 (PBAT-MPs) 制成,越来越多地用于农业.
对于PBAT-MPs对生物肥料有效性和作物生长的影响尚不清楚.

研究的目的:

研究PBAT-MPs对Bacillus amyloliquefaciens生物肥料的疗效的影响.
评估PBAT-MPs对Brassica chinensis L.生长和营养含量的影响.
分析土壤物理化学性质的变化和根球中的微生物群落.

主要方法:

进行了为期四周的盆栽实验,使用Brassica chinensis L.进行了实验.
不同水平的PBAT-MPs被添加到用Bacillus amyloliquefaciens生物肥料处理的土壤中.
分析了土壤特性,植物生物质,营养含量以及根球细菌群体的组成和功能.

主要成果:

PBAT-MPs显著降低了生物肥料的增长促进作用,减少了植物生物质和营养含量.
PBAT-MPs增加了土壤有机碳和有机物质,并增强了糖酶和细胞酶的活动.
PBAT-MPs改变了细菌群体的组成和功能,影响了碳代谢和降解途径,导致更复杂的微生物网络.

结论:

根球微生物特征是PBAT-MPs引起的植物生长抑制的主要驱动因素.
生物降解片中PBAT-MPs的积累会对生物肥料的性能和作物健康产生负面影响.
有机降解片的合理使用和对其残留的注意是可持续农业实践所必需的.

关键词:

可生物降解的微塑料农作物生长的增长农作物生长的增长生态风险生态风险酶活性的酶活动.与根相关的微生物群.

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