Summary
Abstract The application of straw and nutrients to agricultural subsoils is of significant interest to enhance carbon (C) sequestration and soil fertility. However, little research has explored the effect straw application on microbial stoichiometry, soil organic carbon (SOC) mineralization and accumulation and their relationships, in subsoil. In order to address these knowledge gaps, we examined the soil characteristics (organic carbon mineralization, available nutrient contents and microbial stoichiometric ratio) under straw addition (maize leaf and stem) with and without nitrogen (N) supplementation (no addition, 30 mg N kg −1 dry soil −1 , 60 mg N kg −1 dry soil −1 ) during an 80‐day incubation experiment. The microbial stoichiometric ratio imbalance (C:N and C:Phosphorus (P)) and extr
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