[Effects of Different Metal Elements on Cadmium Uptake Under Wheat-rice Rotation Condition].

Q2 Environmental Science
Jing Tian, Zhen-Bo Wang, Jian-Kang Zhou, Hai-Kuan Cheng, Chang Li, Hong-En Liu, Fu-Qing Sui, Peng Zhao
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引用次数: 0

Abstract

The accumulation of cadmium (Cd) in the food chain poses a serious threat to human health. To explore the possible heavy metal cation inhibitor, a pot experiment was developed to research the addition of Fe, Mn, Zn, and Mg on Cd uptake and accumulation in wheat and rice. Soil Cd content was artificially added to 5 mg·kg-1 and aged for one month. Fe, Mn, and Zn were added as metal chlorides at a ratio of 100 mg·kg-1 and Mg for 300 mg·kg-1. The main results were: ① Zn supplementation significantly enhanced the grain biomass of wheat and rice; ② Zn remarkably reduced the grain Cd content in wheat and rice, with a decrease of 41% and 23% in wheat and rice grain Cd content compared with that in the control, respectively, without yield penalty; and ③ In the wheat-rice rotation mode, the grain Cd content in rice was notably lower than that in wheat, with a reduction to 0.17 mg·kg-1 for ω (Cd), which was below the rice Cd limit value (0.2 mg·kg-1) specified by the national food safety standard (GB 2762-2022). Collectively, these findings suggest that the application of Zn in a wheat-rice rotation system significantly mitigate Cd accumulation in grains, with rice exhibiting a more pronounced effect. These results hold notable implications for the safe utilization of Cd-contaminated farmland and ensuring food security.

[不同金属元素对小麦-水稻轮作条件下镉吸收的影响]。
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来源期刊
环境科学
环境科学 Environmental Science-Environmental Science (all)
CiteScore
4.40
自引率
0.00%
发文量
15329
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