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    张智慧, 冯帆, 刘晓文, 等. 施胶量对水稻生物质育秧盘理化性能的影响[J]. 华南农业大学学报, 2024, 45(0): 1-7. DOI: 10.7671/j.issn.1001-411X.202404033
    引用本文: 张智慧, 冯帆, 刘晓文, 等. 施胶量对水稻生物质育秧盘理化性能的影响[J]. 华南农业大学学报, 2024, 45(0): 1-7. DOI: 10.7671/j.issn.1001-411X.202404033
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    ZHANG Zhihui, FENG Fan, LIU Xiaowen, et al. The effect of adhesive application on the physical and chemical properties of rice biomass seedling raising trays[J]. Journal of South China Agricultural University, 2024, 45(0): 1-7. DOI: 10.7671/j.issn.1001-411X.202404033
    Citation: ZHANG Zhihui, FENG Fan, LIU Xiaowen, et al. The effect of adhesive application on the physical and chemical properties of rice biomass seedling raising trays[J]. Journal of South China Agricultural University, 2024, 45(0): 1-7. DOI: 10.7671/j.issn.1001-411X.202404033
    shu

    施胶量对水稻生物质育秧盘理化性能的影响

    The effect of adhesive application on the physical and chemical properties of rice biomass seedling raising trays

      摘要
    • 摘要:
      目的 研究胶粘剂在育秧盘成型过程中的作用，探究不同施胶量对水稻育秧盘理化性能的影响。
      方法 将秸秆和牛粪按一定比例发酵，其产物作为可降解生物基质，配以自制弱酸性、粘结强度高且耐水性好的改性淀粉胶粘剂，同时加入营养元素混合搅拌，在2~3 MPa压力下低压成型，保压5~7 min后进行干燥定型，即可得水稻生物质育秧盘；采用单因素方差分析法，分析不同施胶量对育秧盘生物降解率、体积膨胀率、含水率以及抗剪切强度的影响。
      结果 确定最佳施胶量为秧盘总质量的21%，此时所制得秧盘的生物降解率为82%，抗剪切强度为0.07 MPa，含水率为12.5%，体积膨胀率为46%。
      结论 与市售育秧盘相比，所制备的水稻育秧盘施胶用量降低，抗水性能提高，生物降解率较高，可满足水稻育秧盘的要求；研究结果为育秧盘的工业化生产提供技术支持，为秸秆和牛粪的高附加值利用提供新途径，促进秧苗的优质生产。

       

      Abstract:
      Objective To study the effect of adhesive in the forming process of seedling tray and explore the effect of different amounts of glue on the physical and chemical properties of rice seedling tray.
      Method straw and cow manure were fermented in a certain proportion, and the products were used as biodegradable substrates. The self-synthesized modified starch adhesive, characterized by its weak acidity, high bond strength, and excellent water resistance, was incorporated into the formulation. Concurrently, nutritional elements were introduced and thoroughly mixed. Then, the rice seedling tray was fabricated through low-pressure molding at a pressure of 2~3 MPa, followed by drying after maintaining the pressure for 5-7 min. Single factor analysis of variance was used to analyze the effects of different amounts of glue on the biodegradation rate, volume expansion rate, moisture content and shear strength of seedling tray.
      Result The optimal glue amount was 21% of the total weight of the seedling tray, and the resulting seedling tray had biodegradation rate of 82%, shear strength of 0.07 MPa, moisture content of 12.5% and volume expansion rate of 46%.
      Conclusion Compared to commercially available seedling trays, the prepared rice seedling trays have reduced the amount of glue used, improved water resistance, and have a higher biodegradation rate, meeting the requirements for rice seedling trays. This provides technical support for the industrial production of seedling trays, offers a new avenue for the high-value utilization of straw and cow dung, promots the quality production of seedlings.

       

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