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Phytoremediation of Secondary Salinity in Greenhouse Soil with Astragalus sinicus, Spinacea oleracea and Lolium perenne

文献类型： 外文期刊

作者： Cai, Shumei 1 ; Xu, Sixin 1 ; Zhang, Deshan 1 ; Fu, Zishi 1 ; Zhang, Hanlin 1 ; Zhu, Haitao 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Inst Ecoenvironm & Plant Protect, Shanghai 201403, Peoples R China

关键词： phytoremediation; secondary salinization; salt tolerance; microbial diversity; nutrient accumulation

期刊名称：AGRICULTURE-BASEL （ 影响因子：3.408； 五年影响因子：3.459 ）

ISSN：

年卷期： 2022 年 12 卷 2 期

页码：

收录情况： SCI

摘要： Phytoremediation is an effective and ecological method used to control soil secondary salinization in greenhouses. However, the plant-soil interactions for phytoremediation have not been studied sufficiently. In this study, three crop species (Astragalus sinicus (CM), Spinacea oleracea (SP) and Lolium perenne (RY)) were compared in a greenhouse experiment. The results showed that all three crops increased the soil microbial biomass, the abundance of beneficial microorganisms, available phosphorus and soil pH, and reduced the soil salt content. The crop nutrient accumulation was positively correlated with the relative abundance of bacterial 16S rRNA sequences in the soil. CM and RY respectively increased the relative abundances of norank_f_Gemmatimonadaceae and norank_f_Anaerolineaceae within the soil bacterial community, while SP increased the relative abundances of Gibellulopsis within the fungal community. Correlation analysis revealed that pH and total dissolved salts were the vital factors affecting soil microbial communities in the secondary salinized soil. Our results suggest that phytoremediation could effectively alleviate secondary salinization by regulating the balance of soil microbial community composition and promoting crop nutrient accumulation.

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