尿素衍生碳点对玉米土壤系统的环境行为和协同效应
Bingxu Cheng1, Tianjiao Chang1, Yuying Ren1
1Institute of Environmental Processes and Pollution Control, and School of Environment and Ecology, Jiangnan University, Wuxi, Jiangsu, 214122, China.
Journal of environmental management
|March 8, 2026
概括
来自尿素的碳点 (NDs) 为肥提供了一个可持续的替代品. 在叶子上应用ND可促进玉米生长,提高使用效率,通过改变土壤微生物活动和保持土壤肥力来减少环境污染.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 纳米技术 纳米技术
背景情况:
- 肥污染威胁着农业生态系统的可持续性.
- 传统的化肥导致环境退化,降低了土壤的肥力.
- 开发环保替代品对于可持续农业至关重要.
研究的目的:
- 通过热水处理,研究尿素转化为N-化碳点 (NDs).
- 为了比较NDs与尿素的环境影响和植物土壤系统动态.
- 评估NDs作为玉米可持续源的有效性.
主要方法:
- 尿素的水热转化为N-化碳点 (NDs).
- 在10 mg/L的玉米植物中,叶子应用NDs.
- 对营养物质运输,土壤微生物群落,基因表达和温室气体排放的分析.
- 评估玉米的生长,光合作用和代谢.
主要成果:
- NDs被玉米叶所吸收,转移到根部,并沉积在土壤中,改变了微生物群落.
- NDs增加了土壤NH4+-N和NO3--N度,增强了碳稳定性,并抑制了SOC矿化.
- 无核排放减少了CO2,NH3和N2O排放量,分别减少了20.9%,60.0%和11.2%.
- 由于增强的碳固定和光合作用,玉米的生产率增加了16.7%.
- 刺激了的吸收,转移和同化,增加了56.6%的叶子和10.2%的谷物蛋白.
结论:
- NDs提供了一种可持续的基于纳米技术的化肥方法.
- 无核电可以提高使用效率,提高作物生产率,减轻环境污染.
- 这项研究强调了NDs在促进可持续农业和土壤健康方面的潜力.
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