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当前位置: 首页 > 文章 > Abiotic and biotic drivers of struvite solubilization in contrasting soils 土壤圈(英文版) 2023,33 (6)
Position: Home > Articles > Abiotic and biotic drivers of struvite solubilization in contrasting soils Pedosphere 2023,33 (6)

Abiotic and biotic drivers of struvite solubilization in contrasting soils

作  者：
Antonio Ruiz‐Navarro;Manuel Delgado‐Baquerizo;Concha CANO-D ÍAZ;Carlos GARC ÍA;Felipe Bastid
单  位：
ICL Specialty Fertilizers Iberia, Totana, Murcia (Spain);Centre for Research and Development in Agrifood Systems and Sustainability (CISAS), Instituto Politécnico de Viana do Castelo (IPVC), Rua Escola Industrial e Comercial Nun’Álvares, 34, 4900-347 Viana do Castelo (Portugal); Unidad Asociada CSIC-UPO (BioFun). Universidad Pablo de Olavide, 41013 Sevilla (Spain);CEBAS-CSIC, Dpto. Soil and Water Conservation, Espinardo, Murcia (Spain;CEBAS-CSIC, Dpto. Soil and Water Conservation, Espinardo, Murcia (Spain);Laboratorio de Biodiversidad y Funcionamiento Ecosistemico. Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), CSIC, Av. Reina Mercedes 10, E-41012, Sevilla (Spain)
关键词：
bacteria;fungi;environmental factor;operational taxonomic unit;phosphorus fertilizer;phosphorus fraction;phosphorus solubilization;soil fertility;soil property;FATTY-ACID ANALYSIS;PHOSPHORUS USE;USE EFFICIENCY;AGRICULTURE;FERTILIZERS;EXTRACTION;BIOMASS;YIEL
摘  要：
Phosphorus (P) limitation in the coming decades calls for the utilization of alternative fertilizers in agriculture. Struvite is a promising P source, but its potential fertilizer role is dependent on different physical, chemical and biological properties, which are very heterogeneous in soil and complicate the prediction of the best soil conditions for its application. Here, we evaluated the solubility of struvite in soil, its redistribution into P fractions, and its potential abiotic and biotic drivers in 62 globally-distributed soils with contrasting properties through an incubation assay. We found that after 40 days, about 35% of the struvite-P is redistributed into soil fractions that are more accessible to plants and microbes. P redistribution from struvite is driven by a complex suite of chemical, physical, environmental and microbial properties that varied across soils. Soil texture played a critical role in determining the entrapping of P in struvite-amended soils in soluble (H2O), labile (NaHCO3), and moderately labile (NaOH) fractions. In addition, the soil cations solution was one the most important driver for struvite-P available fractions. The great importance of texture and cations in determining struvite-P fractions in soil contrasted with the relatively minor role of pH. At the microbial level, the number of bacterial operational taxonomic units (OTUs) from the original soils that correlated with struvite-P fractions was higher than that of fungi. In comparison with the soluble fraction (PH2O), the number of OTUs that correlated with the struvite-P labile fraction (PNaHCO3) was dominated by bacteria rather than by fungi. Overall, this study provided a predictive framework of the potential use of struvite as a P fertilizer in contrasting soils.

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