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聚烯微纤维对大豆生长和固有负面影响,无论土壤类型和菌根菌的存在如何
Antonella Lo Porto1, Gaetano Amato1, Giacomo Gargano1
1University of Palermo - Department of Agricultural, Food and Forestry Sciences, Italy.
Journal of hazardous materials
|September 11, 2024
概括
由聚烯纤维污染土壤的微塑料污染会损害大豆的生长,并显著减少生物固化. 树状菌根真菌提供了有限的保护,突出了对农业可持续性的风险.
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:
- 微塑料 (MP) 污染土壤对农业生产力构成风险.
- 对农作物的MP影响背后的机制尚未完全理解.
- 聚烯 (PP) 纤维是一种常见的土壤污染物.
研究的目的:
- 研究PP纤维对大豆生长,吸收,生物固定 (BNF) 和用水效率的影响.
- 评估土壤类型和状菌根菌 (AMF) 对这些影响的影响.
- 阐明PP在农业生态系统功能中的作用.
主要方法:
- 大豆植物种植在两种土壤类型 (Alfisol和Vertisol) 中,具有两种PP纤维度 (0.4%和0.8%w/w).
- 实验包括使用和不使用AMF疫苗的治疗方法.
- 测量包括植物生长,吸收,BNF率和用水效率.
主要成果:
- PP污染使大豆的植物生长率平均降低了12%,在Alfisol中影响更大.
- 随着PP度的增加,BNF逐渐降低 (17.1%在0.4%的PP, 27.5%在0.8%的PP).
- 在受到PP污染的Alfisol中,用水效率下降了9%. 虽然AMF没有减轻整体PP压力,但却减少了BNF的减少.
结论:
- PP纤维污染对大豆生长产生负面影响,并严重影响BNF,引发农业环境问题.
- 土壤类型影响PP对作物影响的严重程度.
- AMF的共生为BNF提供了部分保护,但不能完全抵消PP引起的压力,因此需要制定减少土壤MP污染的策略.
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