数字农科院2.0

Effect of phosphorus-loaded biochar and nitrogen-fertilization on release kinetic of toxic heavy metals and tomato growth

文献类型： 外文期刊

作者： Ding, Zheli;Alharbi, Saif;Ali, Esmat F.;Ghoneim, Adel M.;Hadi Al Fahd, Marzoq;Wang, Guangshuai;Eissa, Mamdouh A.

作者机构：

关键词： Corn stalks;metal uptake;nitrogen fertilization;P-loaded biochar;tomato

期刊名称： INTERNATIONAL JOURNAL OF PHYTOREMEDIATION

ISSN： 1522-6514

年卷期： 2022 年 24 卷 2 期

页码：

收录情况： SCIE（2022版）

摘要： In this study, we investigate the effect of nitrogen fertilizer application rates with and without phosphorus-loaded biochar (BCP) on the productivity of tomato (Solanum lycopersicum cv GS) planted on a contaminated soil based on pot and incubation experiments. The release kinetic of toxic metals as affected by BCP was also investigated. BCP at rate of 2% (w/w) and nitrogen levels (250 and 500 mg N kg(-1)) were added to sandy loam soil polluted with Cd, Pb, Zn, and Cu. The experiment consisted of five treatments including: Control (C), nitrogen a rate of 250 (N-250), or 500 mg kg (N-500), BCP + N-250, and BCP + N-500. Maximum tomato growth was achieved in the soil that was treated with BCP + N-500, followed by BCP + N-250, while lowest one was observed in the control. Tomato yield as affected by the BCP and N-fertilization was in the descending order: BCP + N-500 > BCP + N-250 > N-500 = N-250 > C. The addition of N-250, N-500, BCP + N-250, and BCP + N-500 increased the fruit yield by 24, 31, 35, 58% in comparison with the control. Levels of Zn, Cu, and Pb in tomato fruit was in the descending order: N-500> N-250 > C > BCP + N-500 > BCP + N-250. The combined application of BCP and N-fertilization augmented the availability and uptake of essential nutrients and effectively reduced those of toxic ones. The addition of BCP + N-250 decreased Zn, Cu, Cd, and Pb content in fruit of tomato by 16, 10, 54, 54, and 58%, respectively, compared to the control soil, while these decreases were 13, 16, 60, 60, and 72% in the case of BCP + N-500. BCP succeeded significantly in reducing the release of toxic chemicals, which ultimately may restrict the transfer of toxic chemical to the food chain solution. Novelty statement Tomato grown on metal-contaminated soils contains high levels of toxic metals. Phosphorus-loaded biochar (BCP) reduced the negative effects of high inorganic-N rates by reducing the release of toxic metals to the soil solution. BCP enhanced the soil quality indicators and increased the soil microbe's activity.

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