数字农科院2.0

Arsenic Immobilization for Paddy Field and Improvement of Rice (Oryza sativa L.) Growth through Cerium–Manganese Modified Wheat Straw Biochar Application

文献类型： 外文期刊

作者： Liang Ting;; Li LIanfang

作者机构：

关键词： modified biochar; arsenic; immobilization; rice

期刊名称： Sustainability

ISSN： -

年卷期： 2023 年

页码：

收录情况： SCIE（2023版） ; ; SSCI（2023版）

摘要： Abstract: Arsenic (As) frequently emerges in paddy soils, necessitating measures to combat soilpollution and protect rice crops from As contamination. In this study, a novel functional biochar (MBC)by loading cerium manganese oxide was prepared, and its effects on soil As immobilization and Asuptake by rice in two different As-contaminated paddy soils of 68.99 and 158.52 mgAs·kg−1(markedas soil-L and soil-H, respectively) were detected. The pot experiment manifested that MBC performedbetter in stabilizing soil As than original biochar. The incorporation of MBC facilitated the conversionof soil active As to the stable state, promoted the growth of rice plants, and reduced As uptake byrice. Specifically, the total plant biomasses for MBC treatment were increased by 16.13–70.07% and12.36–92.58% in soil-L and soil-H compared with CK (without material input), respectively. MBCtreatments resulted in a reduction of As contents by 34.67–60.13% in roots, 43.68–66.90% in stems,and 54.72–64.65% in leaves for soil-L. Furthermore, in soil-H, the As content in rice roots, stems, andleaves showed a decrease by 49.26–79.03%, 87.10–94.63%, and 75.79–85.71% respectively. This studyprovides important insights for the remediation of As-contaminated paddy soil using MBC.

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