Ganoderma Lucidum Cultivation Techniques
Ganoderma lucidum, as a valuable Chinese medicinal herb, the key to successful cultivation lies in the scientific proportioning of the substrate. High-quality culture soil not only provides ample nutrients but also directly affects the growth rate of mycelium and the quality of the fruiting bodies. This article will detail the core techniques of Ganoderma lucidum cultivation from substrate formula to the entire operation process.
Three Core Links in Ganoderma Lucidum Cultivation
Principles of Substrate Preparation
1. Carbon-nitrogen ratio control: It is recommended to maintain a golden ratio of 25:1. A combination of cottonseed hulls (77%) and bran (10%) can ensure the supply of lignin while providing necessary proteins. 2. Trace element addition: gypsum to adjust the pH to 6.5-7.0, phosphate fertilizer to promote mycelium differentiation, and sugar as an initial energy supplement. 3. Raw material pretreatment: Sawdust needs to undergo 3 months of natural fermentation to eliminate inhibitory substances such as tannic acid.
Key Points of Mushroom Bag Preparation
Use 17×33 cm polypropylene mushroom bags, with the stuffing looseness such that it slightly bounces back when pressed with a finger. The double-loop sealing technique can reduce the contamination rate, with the spacing of ventilation holes maintained at 8 cm in a plum blossom pattern. For atmospheric pressure sterilization, maintain 100°C for 12 hours, and for high-pressure sterilization, maintain 121°C for 2.5 hours.
Environmental Control System
During the mycelium growth phase, maintain a constant temperature of 25±1°C and gradually increase the air humidity to 70%. After sprouting, provide scattered light of 200-500 lux, and control the carbon dioxide concentration between 0.08%-0.15%. Using a layered shelf立体 cultivation method can increase space utilization by 30%.
High-quality substrates can increase the content of Ganoderma lucidum polysaccharides by 15%-20%, and reasonable pH management can achieve a uniformity of fruiting bodies of over 90%. It is recommended to use steam sterilization after each harvest to treat old substrates, and mixing with 10% new material can achieve recycling. Mastering these core technologies will allow you to cultivate high-quality Ganoderma lucidum with thick caps and full spores.