在不同的肥料应用条件下对cd和pb进行修改的影响
Buchan Zhou1,2,3, Yueqing Liao1,2,3, Xiaojun Zheng1,2,3
1Jiangxi Provincial Key Laboratory of Environmental Pollution Prevention and Control in Mining and Metallurgy, Ganzhou, 341000, China.
Scientific reports
|February 13, 2025
概括
生物炭 (BC) 和热带石 (ZE),特别是联合 (CO),有效地减少在污染土壤中种植的蔬菜中重金属 (Cd,Pb) 的吸收. 这种土壤修改策略减轻了农业中使用肥料的风险.
科学领域:
- 环境科学 环境科学
- 农业科学 农业科学
- 土壤科学 土壤科学
- 整治技术 整治技术
背景情况:
- 施加肥料提高了土壤的肥力,但可以在受污染的农田中调动重金属.
- (Cd) 和 (Pb) 是常见的土壤污染物,对作物安全和人类健康构成风险.
- 了解土壤修饰在减轻重金属生物可用性的作用对于可持续农业至关重要.
研究的目的:
- 评估生物炭 (BC),热石 (ZE) 和它们的组合 (CO) 对四种蔬菜物种Cd和Pb水平的影响.
- 评估这些修正案在不同施肥方案下对土壤酶活动和金属积累的影响.
- 为了确定BC,ZE和CO在降低重金属生物可用性和植物吸收方面的有效性.
主要方法:
- 用四种蔬菜进行了盆栽实验:水菜,中国白菜,生菜和花束.
- 治疗包括生物炭 (BC),热 (ZE) 和它们的组合 (CO),在不同的受精条件下应用.
- 测量了土壤酶活性 (尿酶,催化酶,糖酶),并使用BCR序列提取分析了蔬菜芽中的Cd和Pb度.
主要成果:
- 联合治疗 (CO) 显著增强了尿酶和催化酶活动.
- 复合肥单独增加了蔬菜芽中的Cd和Pb水平,但CO修正案有效地减轻了这些增加.
- BC和CO处理将Cd和Pb转移到更稳定的土壤分量中,降低了它们的生物利用率和芽积累 (Pb与CO减少24.8-49.7%).
结论:
- 生物炭 (BC) 和热带石 (ZE),特别是组合 (CO),是有效的土壤修补剂,用于修复受重金属污染的农业土壤.
- 这些修改减少了Cd和Pb的生物可用性和植物吸收,特别是在使用化学肥料时.
- 这些发现支持使用BC和ZE作为一种可持续的策略,以改善受污染环境中的作物安全.
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