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    范龙, 吴啸鹏, 黄敏, 等. 生物炭施用对水稻育秧土理化特性和秧苗素质的影响[J]. 华南农业大学学报, 2018, 39(1): 40-44. DOI: 10.7671/j.issn.1001-411X.2018.01.007
    引用本文: 范龙, 吴啸鹏, 黄敏, 等. 生物炭施用对水稻育秧土理化特性和秧苗素质的影响[J]. 华南农业大学学报, 2018, 39(1): 40-44. DOI: 10.7671/j.issn.1001-411X.2018.01.007
    shu
    FAN Long, WU Xiaopeng, HUANG Min, JIANG Ligeng, ZOU Yingbin. Effect of biochar addition on physicochemical properties of nursery soil and traits of rice seedlings[J]. Journal of South China Agricultural University, 2018, 39(1): 40-44. DOI: 10.7671/j.issn.1001-411X.2018.01.007
    Citation: FAN Long, WU Xiaopeng, HUANG Min, JIANG Ligeng, ZOU Yingbin. Effect of biochar addition on physicochemical properties of nursery soil and traits of rice seedlings[J]. Journal of South China Agricultural University, 2018, 39(1): 40-44. DOI: 10.7671/j.issn.1001-411X.2018.01.007
    shu

    生物炭施用对水稻育秧土理化特性和秧苗素质的影响

    Effect of biochar addition on physicochemical properties of nursery soil and traits of rice seedlings

      摘要
    • 摘要:
      目的  明确生物炭在水稻育秧中的应用潜力。
      方法  以木薯秸秆炭为材料，在不同播期条件下研究生物炭施用(φ为25%)对水稻育秧土理化特性、秧苗根系及地上部性状的影响。
      结果  与对照相比，木薯生物炭施用改善了育秧土理化特性，木薯生物炭施用使育秧土容重降低了0.66 g·cm–3，pH及有机质和碱解氮质量浓度分别增加了0.51、50 mg·cm–3和195 μg·cm–3，木薯生物炭施用促使水稻秧苗的根长、根系表面积、根体积、根系生物量和发根力分别提高了32.4%、30.1%、50.0%、13.7%和21.5%，秧苗叶面积、株高、茎基宽和地上部生物量分别提高了19.2%、8.0%、5.3%和10.2%。生物炭对水稻秧苗性状的影响在不同播期间存在一定差异，温度相对较低的播期生物炭对秧苗性状的影响达到显著水平。
      结论  木薯生物炭提高了秧苗素质，在温度较低条件下，木薯生物炭更易培育壮秧，可作为水稻育秧基质的良好添加物。

       

      Abstract:
      Objective  To understand the potential use of biochar in rice seedling nursery.
      Method  Cassava straw biochar was used to determine the effects of biochar addition (φ=25%) on physicochemical properties of nursery soil, and root and shoot traits of rice seedlings under different sowing dates.
      Result  Compared with control, cassava straw biochar improved the physicochemical properties of nursery soil, with bulk density decreased by 0.66 g·cm–3, pH, organic matter and alkalized nitrogen contents increased by 0.51, 50 mg·cm–3 and 195 μg·cm–3respectively. Besides, with the addition of cassava straw biochar, length, surface area, volume and biomass of root system and rooting ability increased by 32.4%, 30.1%, 50.0%, 13.7% and 21.5% respectively, and leaf area, plant height, basal stem width and aerial biomass of seedlings increased by 19.2%, 8.0%, 5.3% and 10.2% respectively. The effect of biochar addition on rice seedling traits varied with sowing date. Biochar had significant effect on seedling traits on the sowing date under relatively lower temperature.
      Conclusion  Biochar can improve the quality of rice seedlings, especially under relatively low temperature conditions. Biochar is a kind of beneficial additive of rice nursery soil.

       

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