Abstract: “Huxiang F2” Shiitake spawn sticks during the color change period upon debagging were taken as the test object, and their physical and mechanical properties were investigated. The density of Shiitake spawn sticks was measured using the sand discharge method, yielding a value of 0.64g/cm3. The dynamic friction coefficients between spawn sticks and spawn bags, as well as between spawn sticks and 65Mn spring steel, were determined to be 0.485 and 0.584, respectively, employing the slope method. The attachment strength and strain tearoff force averaged at 1.01kPa and 25.69N, respectively. A radial compression test was performed on the Shiitake spawn sticks using an electronic universal testing machine. Combining the experimental results with theoretical calculations, when the loading speed of the spawn sticks was 10mm/min, the average radial compressive strength of the rods was found to be 44.86kPa, with corresponding average values of elastic modulus and Poissons ratio of 0.48MPa and 0.17, respectively. These research findings establish a fundamental theoretical foundation for the design of key components and the determination of operating parameters for Shiitake spawn stick debagging equipment.

Key words: Shiitake spawn sticks, physical and mechanical properties, adhesion strength, compression feature, agricultural products

摘要： 以“沪香F2”脱袋转色期香菇菌棒为试验对象，对其物理力学特性进行研究。利用排沙法测定香菇菌棒的密度为0.64g/cm3；利用斜面法测定菌棒—菌袋和菌棒—65Mn弹簧钢的动摩擦系数分别为0.485和0.584；利用电子万能试验机测定菌袋粘附强度和菌种撕脱力平均值分别为1.01kPa和25.69N；利用电子万能试验机对香菇菌棒进行径向压缩试验，并结合理论计算得出菌棒加载速度为10mm/min时，菌棒径向抗压强度平均值为44.86kPa，弹性模量和泊松比平均值分别为0.48MPa和0.17。为香菇菌棒脱袋装备关键部件设计及作业参数的确定提供基础理论依据。

关键词: 香菇菌棒, 物理力学特性, 粘附强度, 压缩特性, 农产品加工