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Effects of α-Fe2O3 nanoparticles and biochar on plant growth and fruit quality of muskmelon under cadmium stress

文献类型： 外文期刊

作者： Wang, Yunqiang 1 ; Zhou, Ying 3 ; Guan, Yan 3 ; Zou, Zhengkang 3 ; Qiu, Zhengming 1 ; Dai, Zhaoyi 1 ; Yi, Licong 1 ; Zhou, Wei 1 ; Li, Junli 3 ;

作者机构： 1.Hubei Acad Agr Sci, Inst Econ Crops, Wuhan 430064, Peoples R China

2.Hubei Acad Agr Sci, Vegetable Germplasm Innovat & Genet Improvement K, Wuhan 430064, Peoples R China

3.Wuhan Univ Technol, Sch Chem Chem Engn & Life Sci, Wuhan 430070, Peoples R China

关键词： Cadmium; Biochar; alpha-Fe2O3 nanoparticles; Soil amendment

期刊名称：ENVIRONMENTAL GEOCHEMISTRY AND HEALTH （ 影响因子：4.2； 五年影响因子：4.4 ）

ISSN： 0269-4042

年卷期： 2023 年 45 卷 7 期

页码：

收录情况： SCI

摘要： Cadmium pollution in farmland has become a global environmental problem, threatening ecological security and human health. Biochar is effective in remediation of soil pollution. However, high concentrations of biochar can inhibit plant growth, and low concentrations of biochar have limited mitigation effect on cadmium toxicity. Therefore, the combination of low-concentration biochar and other amendments is a promising approach to alleviate cadmium toxicity in plants and improve the safety of edible parts. In this study, muskmelon was selected as the research object, and different concentrations of alpha-Fe2O3 nanoparticles were used alone or combined with biochar to explore the effects of different treatments on muskmelon plants in cadmium-contaminated soil. The results showed that the combined application of 250 mg/kg alpha-Fe2O3 nanoparticles and biochar had a good effect on the repair of cadmium toxicity in muskmelon plants. Compared with cadmium treatment, its application increased plant height by 32.53%, cadmium transport factor from root to stem decreased by 32.95%, chlorophyll content of muskmelon plants increased by 14.27%, and cadmium content in muskmelon flesh decreased by 18.83%. Moreover, after plant harvest, soil available cadmium content in 250 mg/kg alpha-Fe2O3 nanoparticles and biochar combined treatment decreased by 31.18% compared with cadmium treatment. The results of this study provide an effective reference for the composite application of different exogenous amendments and a feasible idea for soil heavy metal remediation and mitigation of cadmium pollution in farmland.

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