Regarding the indoor cultivation of Ganoderma lucidum, the editor summarizes the following five points of maintenance work for the reference of farmers.
1. Appropriate temperature
Ganoderma is a high-temperature type fungus with a wide range of temperature adaptation. The temperature range for mycelial growth is 10-38°C, and the optimum temperature for mycelial growth is 25°C-28°C. Ganoderma lucidum fruit body (Ganoderma lucidum) can grow and develop in the range of 10-33℃, but the most suitable temperature for primordium differentiation and fruit body development is 25-28℃. Below 20°C, the mycelium is easy to turn yellow, and the growth of the fruit body is inhibited. When the temperature is higher than 38°C, the mycelium will die. Temperature changes are not conducive to the differentiation and development of fruit bodies, and development cycles of varying thickness are prone to occur, which deforms the bacterial coverage and affects the quality of Ganoderma lucidum.
2. Nutrients
Ganoderma is a saprophytic fungus and a facultative parasite. Its nutrition comes from carbohydrates and nitrogenous compounds. The ratio of carbon to nitrogen is about 22:1. It also requires a small amount of mineral elements. Carbon sources include glucose, sucrose, starch, lignin, cellulose, hemicellulose and the like. The nitrogen source mainly comes from protein, amino acid, urea, ammonium salt, etc. Most broad-leaved trees and plant stalks such as sawdust, leaves, bagasse, rice straw powder and other plants can be used as the cultivation material of Ganoderma lucidum. Ganoderma can grow and develop at pH 3-7, and the pH value should be controlled at 4.5-6. The production of substrates required for the cultivation of Ganoderma lucidum in China is very complicated. It is recommended that the nutrient substrate after inoculation should be directly purchased for planting.
3. Sufficient oxygen
Ganoderma lucidum is an aerobic fungus. The growth of hyphae requires oxygen, and the growth of fruit bodies requires oxygen. When the CO2 content in the air is greater than 0.1%, the fruit bodies of Ganoderma lucidum develop abnormally or cannot open the umbrella normally. When the CO2 content is greater than 1%, the seeds The entity cannot develop normally.
4. Higher humidity
The growth of Ganoderma requires higher humidity. During the mycelial growth period, the water content of the culture is 55-60%, the relative humidity of the air is 65-70%, the water content of the substrate is 60-65%, and the relative humidity of the air is 90-95%. When the relative humidity of the air is less than 80%, the fruit body is underdeveloped. When the relative humidity of the air is less than 60%, after 2 to 3 days, the newly grown fruit body changes from white to gray. Water is very important in all stages of Ganoderma development.
5. Sufficient light
The growth of Ganoderma lucidum is very sensitive to light. The growth and development of the hyphae do not require light. Adequate light will inhibit the growth of the hyphae. Under dark conditions, the growth of the hyphae is white, strong and fast, but in the fruit body More scattered light is needed during the differentiation process. Too strong or too weak light will affect the development of fruit bodies, and the growth of fruit bodies is light-oriented.