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July 7, 2026BiocharOpen Access

Straw-derived biochar was more effective than direct straw return in mitigating soda saline-sodic stress and improving nitrogen use efficiency in rice grown in saline-sodic fields

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Authors

FJFeng JinJilin Agricultural UniversityCWChuchu WangJilin UniversityXWXudong WangJilin Agricultural University

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Implication

Randomized trial investigates biochar versus straw return effects on rice yield and nitrogen efficiency in saline-sodic soil, indicating biochar's superiority.

Key Points

  • This study aims to evaluate the effectiveness of straw-derived biochar compared to direct straw return in improving nitrogen use efficiency and mitigating saline-sodic stress in rice.
  • Conducted a field experiment from 2023 to 2024.
  • Examined impacts of straw management and nitrogen levels on rice stress physiology and yield.
  • Compared effects of straw removal, direct straw return, and straw-derived biochar return.
  • BR significantly reduced leaf Na⁺ concentration and oxidative stress markers compared to SR.
  • BR improved total nitrogen accumulation and nitrogen use efficiency by 22.44–39.58% and 16.49–22.07%, respectively.
  • Grain yield under BR was significantly higher by 4.04% compared to SR.

Cite This Study

Jin et al. (2026) studied this question.

synapsesocial.com/papers/6a4c96be331bc25c9e5f4101https://doi.org/10.1007/s42773-026-00619-7
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