不同类型包膜控释肥膜壳微塑料的产生特性

周海馨; ZHOU Haixin; 朱梦涵; ZHU Menghan; 赵晨浩; ZHAO Chenhao; 王圣森; WANG Shengsen

doi:10.48014/fcas.20251115002

不同类型包膜控释肥膜壳微塑料的产生特性

Generation Characteristics of Micro Plastics from Different Types of Coated Controlled-Release Fertilizer Films

中国农业科学前沿 2025年第1卷第2期页码[12-20] 下载全文[1.7MB]

摘要

为提了解难降解的聚合物包膜材料可能产生的微塑料风险, 本研究采用三种常见聚合物包膜控释肥, 开展土壤培养试验, 模拟研究双季5年持续施用条件下潜在的微塑料产生特性。结果表明: 三种不同膜材的包膜尿素由于释放特性不同, 对土壤电导率、硝铵态氮、全氮产生了显著影响, 从而影响膜壳降解和微塑料产生量。其中完整颗粒形态施用时, 生物基聚氨酯膜材控释尿素释放微塑料最多, 较空白处理提高237.3%, 较聚乙烯膜材和聚氨酯膜材分别提高29.7%~39.0%, 破碎颗粒形态施用时, 模拟破碎聚乙烯膜材处理释放微塑料最多, 较空白处理提高160%, 较模拟破碎生物基聚氨酯膜材处理和模拟破碎聚氨酯膜材处理和分别提高62.5%~182.6%。研究表明, 包膜控释肥料表面的聚合物涂层会释放微塑料, 且破碎形态的膜壳的微塑料释放风险增加。

Abstract

To understand the potential microplastic risks posed by persistent polymer coating materials, this study employed three common polymer-coated controlled-release fertilizers to conduct soil incubation experiments. The experiments simulated the potential microplastic generation characteristics under the condition of continuous application for 5 years across double cropping seasons. The results showed that the three types of coated urea with different membrane materials had significant impacts due to their different release characteristics, which significantly influenced soil electrical conductivity, nitrate-nitrogen, ammonium-nitrogen, and total nitrogen. Changes in these indicators further affected membrane shell degradation and microplastic production. When applied in the form. of intact granules, the bio-based polyurethane-coated controlled- release urea released the highest amount of microplastics, which was 237. 3% higher than that of the blank control, and 29. 7% to 39. 0% higher than that of polyethylene-coated and polyurethane-coated urea respectively. When applied in the form. of crushed granules, the simulated crushed polyethylene membrane treatment released the highest amount of microplastics, which was 160% higher than that of the blank control, and 62. 5% to 182. 6% higher than that of the simulated crushed bio-based polyurethane membrane treatment and simulated crushed polyurethane membrane treatment respectively. This study indicates that the polymer coatings on the surface of coated controlled-release fertilizers can release microplastics, and the risk of microplastic release from crushed membrane shells is increased.

DOI

10.48014/fcas.20251115002

文章类型

研究性论文

收稿日期

2025-05-28

接收日期

2025-06-20

出版日期

2025-06-28

关键词

包膜控释肥料, 微塑料, 土壤, 理化性质

Keywords

Coated controlled-release fertilizer, microplastics, soil, physicochemical properties

作者

周海馨, 朱梦涵, 赵晨浩^*, 王圣森

Author

ZHOU Haixin, ZHU Menghan, ZHAO Chenhao^*, WANG Shengsen

所在单位

扬州大学环境科学与工程学院, 扬州 225000

Company

College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225000, China

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参考文献

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引用本文

周海馨, 朱梦涵, 赵晨浩, 等. 不同类型包膜控释肥膜壳微塑料的产生特性[J]. 中国农业科学前沿, 2025, 1(2): 12-20.

Citation

ZHOU Haixin, ZHU Menghan, ZHAO Chenhao, et al. Generation characteristics of microplastics from different types of coated controlled-release fertilizer films[J]. Frontiers of Chinese Agricultural Sciences, 2025, 1(2): 12-20.