Health Assessment of Natural Selenium-Rich Soil in Yuanzhou District Based on Selenium–Cadmium Principal Factors and the Accumulation of Selenium and Cadmium in the Area Crops

Ning He, Yuting Su, Fang Huang, Yu De, Chengyun Han, Xingjie Li, Zhigang Zhao () and Xian Sun ()
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Ning He: School of life Science and Resources and Environment, Yichun University, Yichun 336000, China
Yuting Su: School of life Science and Resources and Environment, Yichun University, Yichun 336000, China
Fang Huang: School of life Science and Resources and Environment, Yichun University, Yichun 336000, China
Yu De: School of Landscape Architecture and Art Design, Hunan Agricultural University, Changcha 410128, China
Chengyun Han: School of life Science and Resources and Environment, Yichun University, Yichun 336000, China
Xingjie Li: School of life Science and Resources and Environment, Yichun University, Yichun 336000, China
Zhigang Zhao: School of life Science and Resources and Environment, Yichun University, Yichun 336000, China
Xian Sun: School of Marine Sciences, Zhuhai Key Laboratory of Marine Bioresources and Environment, Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Pearl River Estuary Marine Ecosystem Research Station, Ministry of Education, Research Center of Ocean Climate, Sun Yat-Sen University, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China

Agriculture, 2025, vol. 15, issue 11, 1-18

Abstract: Selenium (Se) is essential for human health, but it interacts with cadmium (Cd). However, there has been little focus on developing soil health evaluation models based on the interaction between Se and heavy metals, or the transport of Se and Cd in oilseed rape. Through detection, it was found that the soil in Yuanzhou District is mostly Se-rich (average 0.62 mg kg −1 ). Correlation analysis of the soil showed a positive correlation between Se content with Cd (r = 0.62, p < 0.01) and organic matter (r = 0.60, p < 0.01). A soil health score model was developed and performed well, indicating that the model can be used to estimate relevant soil health scores. Furthermore, the natural Se content of rice ranges from 0.07 to 0.28 mg kg −1 , and the overall enrichment ability of Se and Cd in oilseed rape is stronger than it is in rice. According to the correlation analysis, the Cd content in the soil was significantly correlated with the stems of oilseed rape (r = 0.49, p < 0.01) and rice (r = 0.37, p < 0.05). As a result, this study suggests using the rice/oilseed rape intercropping model of farming to transfer Cd into oilseed rape to reduce the Cd content in rice.

Keywords: cadmium; health assessment model; oilseed rape; rice; relevance analysis; selenium (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2025
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