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<p>This study evaluates the physiological and agronomic impacts of biodegradable straw-based substrate blocks combined with the novel seedbed conditioner <i>Miao Zhuang Feng</i> (MZF) on seedling cultivation of japonica rice. The research aims to improve the environmental sustainability of rice production by minimizing dependency on conventional plastic seedling trays. Field experiments were conducted in China’s Taihu region using two japonica cultivars, <i>Sujing 2148</i> and <i>Sujing 4699</i>, under four treatments: T1 (straw substrate blocks + conditioner applied pre-sowing), T2 (conditioner sprayed at the one-leaf–one-heart stage), T3 (conditioner applied seven days pre-transplanting), and CK (control using plastic trays without conditioner). Results demonstrated that T1 improved root vitality and photosynthetic efficiency and increased grain yield relative to CK, whereas tiller density was generally highest under T3 across growth stages. In some cases, grain yield under T1 was comparable to that under T2. Notably, T1 improved early-stage growth performance and showed clear benefits across developmental phases preceding heading. Additionally, MZF application at distinct growth stages was associated with changes in several physiological traits. The integration of straw substrate blocks with targeted conditioner application offers an effective, eco-compatible seedling management strategy to boost growth and productivity of japonica rice while mitigating agricultural plastic waste. This approach could provide a sustainable alternative for rice cultivation systems.</p>

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Physiological Effects and Yield Potential of Japonica Rice Grown Using Straw-Based Substrate Blocks and Seedbed Conditioner

  • 期刊论文

  • 发表日期：

    2026年5月4日

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  • Yunsheng Song,
  • Yi Jiang,
  • Fei Chen,
  • Minghui Dong,
  • Xiuliang Jin,
  • Yajie Hu,
  • Yu Fu,
  • Zhongying Qiao,
  • Yuxuan Wang

摘要

This study evaluates the physiological and agronomic impacts of biodegradable straw-based substrate blocks combined with the novel seedbed conditioner Miao Zhuang Feng (MZF) on seedling cultivation of japonica rice. The research aims to improve the environmental sustainability of rice production by minimizing dependency on conventional plastic seedling trays. Field experiments were conducted in China’s Taihu region using two japonica cultivars, Sujing 2148 and Sujing 4699, under four treatments: T1 (straw substrate blocks + conditioner applied pre-sowing), T2 (conditioner sprayed at the one-leaf–one-heart stage), T3 (conditioner applied seven days pre-transplanting), and CK (control using plastic trays without conditioner). Results demonstrated that T1 improved root vitality and photosynthetic efficiency and increased grain yield relative to CK, whereas tiller density was generally highest under T3 across growth stages. In some cases, grain yield under T1 was comparable to that under T2. Notably, T1 improved early-stage growth performance and showed clear benefits across developmental phases preceding heading. Additionally, MZF application at distinct growth stages was associated with changes in several physiological traits. The integration of straw substrate blocks with targeted conditioner application offers an effective, eco-compatible seedling management strategy to boost growth and productivity of japonica rice while mitigating agricultural plastic waste. This approach could provide a sustainable alternative for rice cultivation systems.