微塑料对大米产量和高无机N输入的不肥沃土壤的气态N排放没有影响
Si Wu1, Haiying Lu1, Zhenghua Yi1
1Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China.
Plants (Basel, Switzerland)
|May 11, 2024
概括
微塑料 (PE) 没有影响在不育土壤中的米产或使用效率. 然而,PE改变了普通大米的谷物质量和土壤特性,大米品种是农业影响的主要驱动因素.
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 (PE) 对作物产量, (N) 使用效率和农业土壤中反应性N损失的潜在影响未得到充分研究.
- 有限的研究存在于各种水品种的不育土壤中的这些影响.
研究的目的:
- 为了确定聚乙烯 (PE) 微塑料对作物产量,N使用效率和反应性N损失的影响.
- 为了比较两种大米品种 (Nangeng 5055和Jiafengyou 6) 在不育土壤中的这些效应.
主要方法:
- 土壤柱实验使用不育土壤,肥 (270公斤N ha-1),聚乙烯微塑料输入.
- 种植两种水品种:普通水 (NG) 和混合水 (JFY).
- 测量谷物产量,使用效率,氨 (NH3) 挥发和氧化 (N2O) 排放.
主要成果:
- 杂交大米 (JFY) 在谷物产量方面显著超过普通大米 (NG),无论PE是否存在.
- 聚乙烯微塑料对两种品种的整体N使用效率的影响最小.
- 聚乙烯微塑料意外增加了普通大米 (NG) 的总氨基酸含量.
- 米种类显著影响了NH3挥发和土壤特性,但PE没有影响N损失 (NH3,N2O) 或N使用效率.
结论:
- 米种类,而不是聚乙烯微塑料,主要影响了米生产,使用效率和在这种不育土壤系统中的损失.
- 聚乙烯微塑料影响了普通大米的谷物质量,改变了土壤的特性.
- 需要进一步的研究,以了解农业土壤中微塑料污染的长期影响.
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