生物炭和细菌的综合应用,以减轻的毒性和的生物可访问性
Muhammad Umair Hassan1, Huifang Xu1, Mansour Ghorbanpour2
1Research Center on Ecological Sciences, Jiangxi Agricultural University, Nanchang 330045, PR China.
The Science of the total environment
|November 15, 2024
概括
生物炭和 Pseudomonas frederiksbergensis (PF) 有效地减轻 (Sb) 在中的毒性. 联合应用改善了植物生长,营养的可用性,并减少了Sb在土壤和作物中的积累.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 农业科学 农业科学
背景情况:
- 反 (Sb) 毒性对植物和人类健康构成重大风险.
- 生物炭 (BC) 是已知用于金属修复的土壤修改剂,但其与微生物进行Sb修复的相互作用尚未完全理解.
- 了解这些相互作用对于制定有效的Sb污染防治策略至关重要.
研究的目的:
- 调查玉米生物炭 (BC) 和Pseudomonas frederiksbergensis (PF) 对减轻中抗毒性的影响.
- 阐明BC和PF对生产率,生化参数和Sb积累的联合影响.
- 评估不同修复处理下土壤特性和微生物活动的变化.
主要方法:
- 进行了一项实验,使用在污染了Sb的土壤中种植的.
- 处理包括控制,Sb污染,Sb + BC (2%),Sb + PF,以及Sb + BC + PF.
- 评估的生物质,谷物产量,叶绿素含量,氧化应激标记 (H2O2,MDA),Sb积累,土壤营养素 (NPK),土壤有机碳 (SOC),微生物生物质碳 (MBC) 和酶活动 (尿酶,催化酶).
主要成果:
- 的毒性显著降低了的产量和叶绿素,增加了氧化应激,降低了土壤营养物质,SOC,MBC和酶活动.
- 结合使用BC和PF显著改善了的生物质和产量,增强了叶绿素合成和抗氧化活性,并增加了营养素的可用性.
- 同时使用BC和PF将土壤中的Sb度降低了38.84%,而植物部分 (根,茎,叶子,谷物) 的度降低了30.96-54.58%,同时降低了生物可访问的Sb度83.82%.
结论:
- 生物炭和Pseudomonas frederiksbergensis的联合应用是修复受Sb污染的土壤的高度有效策略.
- 这种综合方法显著提高了的生产率,并减少了植物的Sb吸收,从而导致更安全的农产品.
- BC和PF的协同效应提供了一个有希望的,环保的解决方案,用于管理农田中的Sb污染.
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