Fertilization type affects the genetic potential for phosphorus mineralization but not for phosphorus solubilization at the continental scale
文献类型: 外文期刊
作者: Yanhong Yuan;María Belén Barquero;Yu Li;Shuiqing Zhang;Hongzhu Fan;Huimin Zhang;Qiang Li;Shutang Liu;Linlin Shi;Andong Cai;Chengjie Ren;Minggang Xu;Felipe Bastida;Hu Xu
作者机构:
关键词: Fertilization;Metagenomes;Mineralization;Phosphorus;Solubilization
期刊名称: Applied Soil Ecology
ISSN: 0929-1393
年卷期: 2025 年 211 卷
页码:
收录情况: SCIE(2025版)
摘要: Conventional and mineral phosphorus (P) fertilizers face depletion risks, but organo-mineral fertilization strategies can reduce P demand in crops. This study examines the long-term effects of applying manure (e.g., sludge, compost) alongside mineral fertilizers (NPKM) on P availability and microbial P cycling in maize and rice agroecosystems across diverse regions of China. We assessed how different fertilization strategies affect soil P availability, phosphatase activity, and the abundance of genes linked to P mineralization, solubilization, transport, and regulation. NPKM treatments significantly increased plant-available P and phosphatase activity, especially in maize, compared to inorganic (NPK) and control (CK) treatments. Enhanced P availability stemmed mainly from microbial-driven P mineralization, indicated by higher phosphatase activity and more abundant P mineralization genes, with no notable impact on P solubilization genes across treatments. Soil pH correlated positively with P solubilization and regulatory processes, highlighting environmental factors' role in P availability and associated microbial processes. Our long-term study demonstrates that combining mineral fertilizers with manure enhances P bioavailability by stimulating microbial mineralization, thereby supporting sustainable P management in agroecosystems.
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