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增强的As从有高As污染风险的土中提取,在Si施肥后由大米植物污染

Rui Huang¹, Xin Wang², Wei Wei³

¹Longping Branch, College of Biology, Hunan University, Changsha 410125, China; Hunan Institute of Agro-Environment and Ecology, Hunan Academy of Agricultural Sciences, Changsha 410125, China.

|September 10, 2023

概括

(Si) 肥料增强了 (As) 从被大米植物污染的土中去除的作用. 包括根在内的整个植物的收获显著增加了As的耗尽,提供了一个具有成本效益的土壤整治策略.

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:

由于洪水条件和独特的生理学,大米植物能有效地吸收和积累 (As).
田土壤经常面临污染,对农业和生态系统构成风险.
(Si) 肥料被探索为一种方法,以加强从受污染的土壤中去除As.

研究的目的:

研究 (Si) 施肥对加强从大米严重污染的土中提取 (As) 的影响.
为了比较弱酸Si肥料 (AcSF) 和性溶性Si肥料 (AlSF) 在促进As去除方面的有效性.
评估根积累和整个植物的收获在As耗尽中的作用.

主要方法:

软酸Si肥料 (AcSF) 和性溶性Si肥料 (AlSF) 应用于土.
监测土壤As溶解度和孔水As度.
量化大米植物吸收的As,并分析其分布 (根与芽).
在大米种植前后使用薄膜 (DGT) 的扩散梯度测量土壤生物可用性As.

主要成果:

AcSF显著增加了土壤As的溶解度 (1.3-1.4倍),而AlSF显示了孔水As的轻微增加.
与对照组相比,Si受精增强米As的摄取率增加了37.2%至171.7%.
超过91.6%的积累的As被保留在Si施肥后的米根中,这凸显了根除的重要性.
在AlSF处理过程中,生物可用土壤As (DGT) 减少了26.9%-31.3%.
整个大米植物的总土壤A耗显著增加至7.0%-11.2%的Si处理,比对照高2.3-2.7倍.

结论:

溶性Si肥料有效地增强了水污染的土中As的耗尽.
收获整个大米植物,特别是积的根,对于最大限度地去除至关重要.
化肥是一种具有成本效益和技术可行的策略,用于减轻土中的污染.

关键词:

这样就好了!As As As 米是什么意思米是什么意思植物提取植物提取如果受精,如果受精.Si/As 的摩尔比率是这样的:

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