ORIGINAL RESEARCH article
Front. Environ. Sci.
Sec. Toxicology, Pollution and the Environment
Volume 13 - 2025 | doi: 10.3389/fenvs.2025.1548784
This article is part of the Research TopicRemediation and Health Risks of Heavy Metal Contaminated Soils, Volume IIView all 3 articles
Effects of combination soil amendments on availability and migration of Cd in soil and rice
Provisionally accepted
- 1Hunan Agricultural University, Changsha, China
- 2bureau of agriculture and rural affairs of Cili county, Zhangjiajie, China
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To achieve safe production of severe cadmium (Cd)-contaminated paddy field, effects of the combination of red mud, silicon fertilizer and phosphorous fertilizer on absorption, transportation and accumulation of Cd in rice were studied by field plot orthogonal experiment. Results showed soil pH, biomass of straw and grain increased after application of the combination soil amendments. Compared with CK (control), soil available Cd decreased by 16.90%-47.09%. Cd content decreased by 42.30%-65.62% in root, 16.05%-67.98% in stem, 26.09%-66.30% in leaf, and 48.39%-74.19% in grain.Variance and range analysis showed effect of the three amendments on Cd reduction in grain was in descending order: red mud > silicon fertilizer > phosphate fertilizer. and the optimal combination soil amendments to control Cd pollution were 1800 kg/ha red mud, 600 kg/ha silicon fertilizer and 675 kg/ha phosphorus fertilizer. Results showed that safe production of severe Cd-contaminated paddy field could be acquired by application of the combination soil amendments and provided a method for remediation severe Cd-contaminated paddy field.
Keywords: Soil, Cd contamination, combination soil amendments, rice, Pollution control
Received: 20 Dec 2024; Accepted: 24 Jun 2025.
Copyright: © 2025 Yang, Zou, Yang, Wu, Yang, Fang and Wei. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Xiangdong Wei, Hunan Agricultural University, Changsha, China
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