从聚氨和聚乙烯聚碳酸涂层肥料到土壤作物系统的微塑料风险
Junsuo Li1, Dongru Wang1, Tiangang Chen1
1College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, People's Republic of China.
Journal of hazardous materials
|October 22, 2025
概括
聚合物涂层肥料释放的微塑料 (MPs) 损害了早期番茄发芽和生长. 然而,在较晚的生长阶段,不良影响会减少,这表明土壤-作物系统的潜在风险和益处.
科学领域:
- 环境科学 环境科学
- 农业学是一种农业学.
- 土壤科学 土壤科学
背景情况:
- 聚合物涂层肥料的使用越来越多,引发了对微塑料 (MP) 污染的担忧.
- 涂层肥料的MPs对土壤作物系统的影响尚不清楚.
研究的目的:
- 评估涂层肥料中的聚氨 (PU) 和聚乙烯聚碳酸 (PE-PC) MPs 对番茄生长和土壤酶活性的影响.
- 评估农业环境中被涂层肥料污染的MP污染相关的风险.
主要方法:
- 番茄种子和幼苗在受控条件下暴露于PU和PE-PCMP.
- 测量了植物生长参数 (发芽率,幼苗生长,新鲜量,叶绿素含量).
- 分析了土壤酶活动 (β-葡萄糖酶,酸酸酶,尿素酶).
- 基于距离的冗余分析 (db-RDA) 用于确定MP对植物和土壤参数的影响.
主要成果:
- PU和PE-PCMP显著降低了发芽率,并抑制了幼苗的早期生长.
- 在45天的生长阶段没有观察到显著的植物毒性;一些病例显示总新鲜重量增加.
- PU MPs稍微增加了叶绿素含量,而高PE-PC度降低了叶绿素含量.
- 土壤酶β-葡萄糖酶和酸酸酶的活性增加,但尿素酶活性没有显著变化.
- MP类型和度共同影响了植物生理特征和土壤酶活动.
结论:
- 来自涂层肥料的MP在发芽阶段存在风险,但对番茄植物生长有微不足道的不利影响.
- 这些发现支持涂层肥料对MP污染的科学应用和风险评估.
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