Abstract:

To investigate the effects of different addition ratios of pear branch sawdust on the agronomic traits and yield of Stropharia rugosoannulata, this experiment tested four treatments with pear branch sawdust additions at 0%, 20%, 40%, and 60%. Agronomic traits were recorded, and the average single-mushroom weight and yield per unit area were analyzed monthly. The role of pear branch sawdust addition ratios during the spawn-running and harvesting stages was clarified, along with the optimal ratio. The study demonstrated that adding pear branch sawdust reduced the carbon-to-nitrogen ratio of the substrate, accelerated mycelial growth, enhanced mycelial vigor, shortened the spawn-running period, increased the number of fruiting bodies, and improved both fruiting body quality and yield per unit area. Specifically, additions of 20% and 40% pear branch sawdust concentrated fruiting body harvesting in the early fruiting stage. A 40% addition significantly increased the number of fruiting bodies and boosted yield per unit area. The 40% addition ratio demonstrated more advantages and is recommended for production when mixed with hardwood sawdust at a 2∶1 ratio.

Key words: Stropharia rugosoannulata, pear branch sawdust, substrate formulation, addition ratio, edible mushroom cultivation