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Screening of practical low-accumulating crops in cadmium-polluted farmland: A field survey and field trail in Guangdong Province, China

文献类型： 外文期刊

作者： Deng, Jianbin 1 ; Xu, Zhaoxin 1 ; Dai, Yusong 1 ; Zhong, Jiawen 1 ; Shi, Fangjie 1 ; Wang, Jinjin 1 ; Li, Wenyan 1 ; Li, Yongtao 1 ; Huang, Yongdong 2 ; Zhang, Yulong 1 ;

作者机构： 1.South China Agr Univ, Coll Nat Resources & Environm, Key Lab Arable Land Conservat South China, MOA,Key Lab Agr Resources Utilizat, Guangzhou 510642, Peoples R China

2.Guangdong Acad Agr Sci, Inst Qual Stand & Monitoring Technol Agroprod, Guangzhou 510640, Peoples R China

关键词： Contaminated farmland; Cultivar selection; Alternative planting; Agricultural planning; Safe production

期刊名称：JOURNAL OF CLEANER PRODUCTION （ 影响因子：10.0； 五年影响因子：10.7 ）

ISSN： 0959-6526

年卷期： 2025 年 486 卷

页码：

收录情况： SCI

摘要： Cadmium (Cd) contamination in soil poses significant threats to human health through the food chain. An effective and eco-friendly solution is to cultivate crops that absorb less Cd in their edible parts, referred to as lowaccumulating crops (LACs). This approach is particularly beneficial in areas with limited arable land. However, research on practical LACs is still limited. To address this, a field survey and trial were conducted in Cdcontaminated farmlands in Guangdong Province, China. The survey assessed 41 crops, revealing that 83.4% of the samples met safety standards, with an average limit-exceeding risk (ERC-Cd) of 0.731. Based on the compliance status, 13 crops were selected for field trials on heavily polluted farmland to evaluate their stability. The compliance rate for these experimental crops reached 96.6%, with an average ERC-Cd of 0.483. Ultimately, 12 crops exhibiting high safety levels, stability, and potential for promotion were recommended as LACs. Throughout the field survey and trial, the identified LACs demonstrated high compliance rates (>= 90.3%), stability across multiple seasons and locations, and potential adaptability to local environments and market demands. Thus, this study contributes to mitigating the contamination risk of agricultural products in Cdcontaminated farmlands of Guangdong. Furthermore, it facilitates the application and dissemination of alternative cultivation techniques by providing an effective method for screening practical LACs in specific regions.

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