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<p>Biogas residue, a nutrient-rich anaerobic digestion byproduct, shows great potential as a seedling substrate, though its effects on substrate properties and seedling growth need further exploration. This study evaluated physicochemical properties of substrates with varying cow manure and straw biogas residue (at 100%, 75%, 50%, 25%, and 0%) proportions, and their impacts on cabbage seedling emergence and growth. The experiment was conducted under controlled greenhouse conditions using a completely randomized design in Beijing, 2017. The results showed that SBR at high proportions (≥75%) significantly inhibited seed germination and seedling growth. In contrast, cabbage seedlings grown in substrates with 50%-75% CMBR exhibited the most satisfactory performance, demonstrating superior agronomic traits such as enhanced plant height, stem diameter, and biomass, which were comparable to or even surpassed a fertilized peat control. Cluster analysis of substrate properties confirmed that CMBR-based formulations were physicochemically closer to the ideal substrate, while Spearman correlation identified pH and EC as key factors affecting seedling quality. Consequently, 50%-75% cow manure biogas residue is a promising substrate, while straw biogas residue needs further treatment. This study provides a scientific basis for the utilization of biogas residues in sustainable agriculture and their potential commercial application.</p>

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Feasibility of using biogas residues from straw and cow manure as alternative substrates for cabbage seedling production

  • 期刊论文

  • 发表日期：

    2026年1月4日

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  • Mengfei Liu,
  • Xingyao Meng,
  • Haixin Li,
  • Jinglin Li,
  • Ziying Liu,
  • Jiabao Guo,
  • Zongjun Cui,
  • Pan Wang,
  • Lianhai Ren

摘要

Biogas residue, a nutrient-rich anaerobic digestion byproduct, shows great potential as a seedling substrate, though its effects on substrate properties and seedling growth need further exploration. This study evaluated physicochemical properties of substrates with varying cow manure and straw biogas residue (at 100%, 75%, 50%, 25%, and 0%) proportions, and their impacts on cabbage seedling emergence and growth. The experiment was conducted under controlled greenhouse conditions using a completely randomized design in Beijing, 2017. The results showed that SBR at high proportions (≥75%) significantly inhibited seed germination and seedling growth. In contrast, cabbage seedlings grown in substrates with 50%-75% CMBR exhibited the most satisfactory performance, demonstrating superior agronomic traits such as enhanced plant height, stem diameter, and biomass, which were comparable to or even surpassed a fertilized peat control. Cluster analysis of substrate properties confirmed that CMBR-based formulations were physicochemically closer to the ideal substrate, while Spearman correlation identified pH and EC as key factors affecting seedling quality. Consequently, 50%-75% cow manure biogas residue is a promising substrate, while straw biogas residue needs further treatment. This study provides a scientific basis for the utilization of biogas residues in sustainable agriculture and their potential commercial application.