Author:
Li Changan,Dong Yonggang,Yi Yun,Tian Juan,Xuan Chao,Wang Yan,Wen Yuanbo,Cao Jianxin
Abstract
AbstractPhosphogypsum (PG) is a solid waste produced from decomposition of phosphate rock in sulfuric acid. It can improve the physicochemical properties of soil. However, the application of PG will inevitably change the living environment of soil microorganisms and lead to the evolution of the soil microbial community. The effects of PG (0, 0.01%, 0.1%, 1%, 10% PG) on soil respiration, enzyme activity and microbial community were studied systematically by indoor incubation experiments. The results showed that the addition of 0.01% PG had little effect on the soil physicochemical properties and microflora. The soil respiration rate decreased with the increase of PG; The activities of catalase, urease and phosphatase were decreased and the activities of sucrase were increased by 10% PG treatment, while 0.01% or 0.1% PG treatment improve the urease activity; Soil microbial community response was significantly separated by amount of the PG amendment, and the application of 10% PG reduced the abundance, diversity and evenness of soil bacteria and fungi. Redundancy analysis (RDA) showed that soil bacterial composition was mainly driven by electrical conductivity (EC) and Ca2+, while fungal composition was mainly driven by F− and NH4+. In addition, the application of PG increased the abundance of salt-tolerant microorganisms and accelerated the degradation of soil organic matter. Overall, These results can help to revisit the current management of PG applications as soil amendments.
Funder
the Science & Technology Plan Projects of Guizhou Province
the Support Plan for Science & Technology Top Talents in High Schools of Guizhou Province
the Support Plan for Science & Technology Top Talents in High Schools of Guizhou
High Level Talent Research Project of Qiannan Normal University for Nationalities
the Youth Science and Technology Talent Development project of Guizhou Provincial Education Department
Publisher
Springer Science and Business Media LLC
Cited by
7 articles.
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