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Hericium Erinaceus Culture Medium Preparation for Original & Cultivated Species

**Common Formulas**:    - 78% broadleaf tree chips, 20% wheat bran, 1% sucrose, 1% gypsum    - 80% cottonseed hulls, 18% wheat bran, 1% sucrose, 1% gypsum    - 40% broadleaf tree chips, 40% cottonseed hulls, 18% wheat bran, 1% sucrose, 1% gypsum  

- **Raw (Auxiliary) Material Processing**:    - Dry materials first (for sterilization, insecticide, and accurate weighing).    - Cottonseed hulls: Large-scale production requires natural composting/fermentation for ~1 month; small-scale production skips this but needs pre-wetting (soak in 1% lime water for 10 mins, drain).    - Sawdust: Pile and water under natural conditions for ≥3 months.  

- **Mixing**:    - *Mechanical*: Dry-mix main/auxiliary materials in a mixer, then add water and stir for 10-15 mins.    - *Manual*: Layer main/auxiliary materials into a pile, dry-mix, add water, and stir repeatedly. Check moisture/pH (adjust with lime if too low).  -

**Bottling/Bagging**:    - *Bottling*: Use 750ml wide-mouth bottles. Fill to the shoulder, leaving ≥6cm space. Punch a bottom-reaching hole post-filling, clean the bottle top, and insert a dry cotton plug (4-5cm, 2/3 inside). Wrap the mouth with moisture-proof paper.    - *Bagging*: Use 15cm×28cm heat-resistant (126°C) polypropylene bags (GB9688 standard). Fill to 12-15cm, flatten the surface, clean the opening, apply a ring (3.5-4cm inner diameter, 3-3.5cm height), and use a cotton plug or bacteria-filtering sponge lid.