可以有效地减少富含的红色土壤中的吸附
Jinlan Huang1, Xuejiao Huang1, Daihua Jiang1
1State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning 530004, Guangxi, China.
The Science of the total environment
|September 28, 2023
概括
添加 (P) 会减少 (Se) 在富含的土壤中的吸附. 这是因为P与Se在土壤矿物质的结合点上竞争,这影响了农产品中的Se可用性.
科学领域:
- 土壤科学 土壤科学
- 环境化学环境化学
- 农业科学 农业科学
背景情况:
- (P) 应用增强了土壤中的 (Se) 可用性,提高了富含的作物产量.
- 在富含的土壤中,P对Se吸附的影响的确切机制在很大程度上仍未被描述.
研究的目的:
- 为了研究P和Se在Se丰富的横岩红土中的吸附行为.
- 为了阐明这种土壤类型中P和Se吸附之间的相互作用机制.
主要方法:
- 进行了批量吸附实验,以研究P和Se吸附等热体.
- 使用了包括SEM-EDS,FTIR和XRD在内的土壤表征技术.
- 兰慕尔和弗罗恩德利希模型被用来描述吸附过程.
主要成果:
- 在红色土壤中,P和Se吸附度随着平衡度增加.
- 添加P显著降低了Se吸附量,从276-423毫克/公斤降至52-201毫克/公斤.
- 根据SEM-EDS,FTIR和XRD的研究,P和Se在与铁酸盐组的结合中竞争,形成含铁的复合物.
结论:
- P和Se之间的竞争性吸附,由与土壤铁团的复杂形成驱动,是减少Se吸附的主要原因.
- 这些发现提供了对P对Se生态化学循环的影响的理论见解.
- 这项研究支持高效利用富含的土壤资源.
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