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外源在污染的土壤中促进了安全的作物生产:综合的元分析

Hongjie Liu¹, Li Chen¹, Xiaohan Bai¹

¹College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China.

Journal of hazardous materials

|November 8, 2024

概括

(Si) 的应用显著减少了小麦,玉米和大米中的 (Cd) 积累,提高了作物产量. 这一元分析为使用Si修正案提供了指导,以确保Cd污染土壤中更安全的作物生产.

科学领域:

环境科学环境科学
农业学是一种农业学.
土壤科学土壤科学

背景情况:

土壤中的 (Cd) 污染对作物生产率和人类健康构成风险.
(Si) 显示出缓解作物对Cd吸收的潜力,但定量数据有限.
确保安全的作物生产需要更好地了解Si在减少Cd毒性的作用.

研究的目的:

进行元分析,评估外源Si对小麦,玉米和大米中Cd积累的影响.
量化Si在降低Cd毒性的有益作用.
确定影响Si在缓解Cd污染方面的有效性的主要因素.

主要方法:

进行了对105项研究的综合元分析.
该研究评估了在小麦,玉米和大米中Cd积累的Si补充.
分析了影响Si作用的关键因素,包括应用方法和土壤特性.

主要成果:

补充剂显著降低了玉米 (37%),大米 (30%) 和小麦 (45%) 中的Cd积累,特别是在谷物中 (40-51%).
所有四种形式的Si应用都提高了作物产量,纳米显示了最高的平均增长 (19%).
Si的有效性受到应用速度,方法,土壤pH值,Cd度和应用类型 (叶片与田间) 的影响.

结论:

外源Si有效地减轻主要谷物作物中的Cd毒性和积累.
建议采用纳米和酸盐Si形式,最佳应用率为≤250 mg/kg.
这项研究为选择和应用Si修正案提供了全球指导,以提高Cd污染土壤中的作物安全性和产量.

关键词:

污染污染污染谷物作物谷物作物外源是一种外源.食品安全食品安全进行元分析分析.纳米是一种纳米.

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