生物炭用于屋顶种植的可行性试验研究

Feasibility Experiment Study on the Application of Biochar for Rooftop Planting

中文关键词: 生物炭  屋顶种植  无土种植基质

英文关键词: biochar  rooftop planting  soilless planting substrate

中文摘要:

      为应对城市化进程中土地资源紧缺问题，提升建筑屋顶闲置空间利用率，研究聚焦于屋顶种植中轻量化、高性能、低成本的基质开发，引入生物炭材料并系统探讨其应用于屋顶种植的可行性与效果。通过理论分析与实践验证相结合的方法，梳理文献总结生物炭特性及应用现状，设计对照试验，以稻壳、木质生物炭分别与蛭石按不同体积比复配为混合基质，测定其理化性质及对蔬菜发芽与生长的影响。结果表明，稻壳生物炭混合型基质在容重(0.15~0.20 g/cm3)、电导率(0.47~0.69 mS/cm)、出芽率(小白菜最高达100%)等方面表现优异，显著优于木质生物炭及纯蛭石基质。证明稻壳生物炭混合基质具有良好的基础性能与植物响应特性，适用于屋顶种植，具备在屋顶农业领域推广应用的潜力。

英文摘要:

      To address the issue of land resource scarcity in urbanization and improve the utilization rate of idle rooftop spaces, the study focuses on the development of lightweight, high-performance, and low-cost substrates for rooftop cultivation. It introduces biochar materials and systematically explores their feasibility and effects in rooftop planting. Through a combination of theoretical analysis and practical verification, the research reviews literature to summarize the characteristics and current applications of biochar, designs comparative experiments, and mixes rice husk biochar and wood biochar with vermiculite in varying volume ratios to create hybrid substrates. The physical and chemical properties of these substrates and their effects on vegetable germination and growth are measured. The results show that the rice husk biochar hybrid substrate outperforms wood biochar and pure vermiculite substrates in terms of bulk density ( 0.15~0.20 g /cm3 ), conductivity ( 0.47 ~ 0.69 mS /cm3 ), and germination rate (up to 100% for pak choi). This demonstrates that the rice husk biochar hybrid substrate has excellent basic performance and plant response characteristics, making it suitable for rooftop cultivation and showing potential for promotion in the field of rooftop agriculture.