The Combination of Biochar and Phosphorus-Containing Materials Can Effectively Enhance the Remediation Capacity of Amaranth on Cadmium-Contaminated Soil and Improve the Structure of Microbial Communities

被引:0
作者
Jiang, Zhiyang [1 ]
Hua, Hongmei [1 ]
Yin, Zheng [2 ]
Wu, Tingsen [3 ]
Zhou, Yuzhi [1 ,4 ]
Chen, Daokun [5 ]
Li, Xinbin [5 ]
Zhao, Mingze [1 ]
Wang, Wenshuo [1 ]
机构
[1] Anhui Univ Sci & Technol, Sch Earth & Environm, Huainan 232001, Peoples R China
[2] South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510641, Peoples R China
[3] Rhein Westfal TH Aachen, Sch Earth Resources & Mat Engn, D-52062 Aachen, Germany
[4] Anhui Prov Engn Lab Water & Soil Resources Compreh, Huainan 232001, Peoples R China
[5] China Geol Survery, Xian Ctr Mineral Resources Survey, Xian 710119, Peoples R China
来源
AGRONOMY-BASEL | 2024年 / 14卷 / 10期
关键词
soil; biochar; bioavailability; phytoremediation; microbial community structure; HEAVY-METALS; PADDY SOIL; ACCUMULATION; PHOSPHATE; CD; AMENDMENTS; BIOAVAILABILITY; IMMOBILIZATION; ADSORPTION; DIVERSITY;
D O I
10.3390/agronomy14102300
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Cadmium (Cd) pollution in soil has become a huge problem for agricultural production in China and even the world. Passivation and phytoremediation are two important remediation technologies for Cd pollution. In this study, the cadmium-contaminated and phosphorus-poor farmland soil around a mining area in Huainan was taken as the research object, and the remediation effect of biochar and phosphorus-containing materials on soil cadmium pollution was discussed. The results showed that the combined application of biochar and phosphorus-containing materials significantly reduced the pH of non-rhizosphere soil and rhizosphere soil, and increased the content of soil dissolved organic carbon (DOC). The combined application of biochar and phosphorus-containing materials significantly reduced soil pore water Cd and soil available Cd. In addition, both a single application of biochar and synergistic application of biochar and phosphorus-containing materials significantly increased the biomass of aboveground and underground parts of amaranth and soil urease and catalase activities. Phosphorus application reduced the bioavailability of Cd in soil. With the increase in phosphorus application, the content of available Cd in soil decreased significantly, and there was a certain negative correlation between Cd content and phosphorus content in plants. The abundance of beneficial microorganisms such as Ochrobactrum, Anaerolinea, Achromobacter, and Cellvibrio in soil was significantly increased after the synergistic application of biochar and phosphorus-containing materials.
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页数:23
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