Safe usage of Cd-polluted paddy fields using alkaline Si-rich compound amendment: Effect and mechanism
文献类型：期刊论文
| 作者 | Wang, Liang4; Yang, Baolin4; Liu, Qiqing3; Zhang, Qingying3; Zhao, Fenghua; Xiao, Yuxuan4; Liao, Xiaoyong2,4 |
| 刊名 | JOURNAL OF ENVIRONMENTAL MANAGEMENT
 |
| 出版日期 | 2023-06-01 |
| 卷号 | 335 |
| ISSN号 | 1095-8630 |
| 关键词 | Cadmium polluted farmland Rice Alkaline fertilizer Silicon Safe production |
| DOI | 10.1016/j.jenvman.2023.117547 |
| 文献子类 | Article |
| 英文摘要 | A low-cost practical technology is urgently needed to minimize cadmium (Cd) pollution in rice in many parts of the world. In the present study, we elucidated the effects and mechanisms of four alkaline compound materials via field experiments in southern China. The results indicated that these two alkaline Si-rich compound materials (AF-SC, alkaline fertilizer compounded with Si-Ca mineral powder; AF-SS, AF compounded with Si-Se mineral powder) could achieve multi-objective gains by simultaneously reducing grain Cd, increasing yield and improving soil quality at a lower cost. The grain Cd content was decreased by an average of about 75% in two field sites, which even ensured safe grain production in areas with medium Cd pollution. The rice yield was increased by a range of 6.7%-21.0% for different varieties and sites. Moreover, the materials abated soil acid-ification with the increase of 0.36-0.62 pH units, increased the contents of available P and available Si, sub-sequently reducing available Cd content in soils. Structural equation model and regression analysis showed that the alkaline environment provided by the alkaline components in compound materials effectively inhibited the formation of Fe/Mn plaques on the root surface, reducing the uptake of Cd from the environment. In addition, the decrease in grain Cd was also attributed to the inhibition of Cd translocation from root to stem, mainly caused by the increase of available Si. These findings reveal that the base application of such alkaline Si-rich compound materials is a viable solution for the remediation of Cd-polluted paddy fields in south China. |
| WOS关键词 | CADMIUM ACCUMULATION ; CONTAMINATED SOIL ; REMEDIATION ; SILICON ; IMMOBILIZATION ; BIOCHAR ; IMPACTS ; IRON ; AVAILABILITY ; SEPIOLITE |
| WOS研究方向 | Environmental Sciences & Ecology |
| 出版者 | ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000947466500001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/190283]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, 11A, Datun Rd, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Beijing Key Lab Environm Damage Assessment & Remed, Beijing 100101, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Liang,Yang, Baolin,Liu, Qiqing,et al. Safe usage of Cd-polluted paddy fields using alkaline Si-rich compound amendment: Effect and mechanism[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2023,335. |
| APA | Wang, Liang.,Yang, Baolin.,Liu, Qiqing.,Zhang, Qingying.,Zhao, Fenghua.,...&Liao, Xiaoyong.(2023).Safe usage of Cd-polluted paddy fields using alkaline Si-rich compound amendment: Effect and mechanism.JOURNAL OF ENVIRONMENTAL MANAGEMENT,335. |
| MLA | Wang, Liang,et al."Safe usage of Cd-polluted paddy fields using alkaline Si-rich compound amendment: Effect and mechanism".JOURNAL OF ENVIRONMENTAL MANAGEMENT 335(2023). |
入库方式： OAI收割
来源：地理科学与资源研究所
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