T/DEFA 002-2025 Active Group standards

T/DEFA 002-2025 Technical Specifications for the Cultivation of Yuhuang Mushrooms in Gardens

T/DEFA 002-2025

Publish Date: 2025-11-19 Implement Date: 2025-11-26 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/DEFA 002-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Technical management

ICS Name: Plant cultivation

Publish Date: 2025-11-19

Implement Date: 2025-11-26

Scope

8.1.1 Cultivation Substrate The substrate can be made from raw materials such as hardwood sawdust, mushroom residue, and corn cobs. The mushroom residue should be free from contaminants. Use a material/bag separator to separate the plastic packaging of the mushroom bags from the mushroom residue, and then crush them. The corn cobs should be crushed into particles with a diameter of about 1 cm. Other auxiliary materials such as wheat bran, rice bran, and corn flour should comply with the requirements of NY/T 1935. 8.1.2 Reference Formulas Formula 1: 80% sawdust, 16% wheat bran, 2% corn flour, 1% gypsum powder, and 1% lime; Formula 2: 50% sawdust, 30% corn cobs, 18% wheat bran, 1% gypsum powder, and 1% lime; Formula 3: 52% sawdust, 35% black fungus mushroom residue, 12% wheat bran, and 1% gypsum powder; Formula 4: 83% sawdust, 15% rice bran, 1% sucrose, and 1% gypsum powder; All formulas have a water content of 55% to 58% and a natural pH. 9 Preparation of Cultivation Bags 9.1 Raw Material Processing The raw materials such as sawdust, corn cobs, and mushroom residue should be soaked and softened before filling the bags. Add appropriate amount of clean water and soak for 12 to 24 hours. The water quality should comply with the requirements of GB 5749. 9.2 Mixing and Bagging According to the formula, sieve the raw and auxiliary materials together and add them to the mixing machine. Add water while mixing to make the substrate have a water content of 55% to 60%. Mix evenly. Use polyethylene (propylene) plastic bags (16 cm to 17 cm) × (35 cm to 38 cm) or (20 cm to 22 cm) × (40 cm to 45 cm) for mechanical bagging, with the bags being loosely filled. 9.3 Sterilization Use either atmospheric pressure sterilization or high-pressure sterilization. The sterilization operation should comply with the requirements of NY/T 528. 9.4 Cooling After the mushroom bags are removed from the sterilizer, quickly move them to the cooling room and cool the