A Detailed Guide to Methods for Adding Nutrient Solutions to Edible Fungi
A Farmer from Hebei: How Can Nutrient Solutions Be Added to Edible Fungi for Good Results?
Answer: 1. The method of adding nutrient solution must be scientific. The methods for supplementing nutrients to edible fungi include spraying, soaking and hole irrigation. Spraying is used during the period when fruiting bodies appear in large numbers. The common method is to prepare a nutrient solution of a certain concentration and, while supplementing water, spray it on mushroom beds and mushroom blocks. It is best to spray the nutrient solution when the flush is declining. When spraying, point the nozzle upward and do not aim it at the fruiting bodies. At the same time, note the four no-spray situations: do not spray on young mushroom buds, do not spray on places where mushrooms have just been picked or where mushroom remnants remain, and do not spray when air humidity is too high. Do not spray when pests and diseases are severe in the mushroom shed. Soaking is mainly suitable for bag cultivation or block cultivation. After harvesting 1-2 flushes of mushrooms, if the fungus bags (blocks) are severely short of water, place the bags or blocks in a prepared nutrient solution to soak, but the soaking time should not be too long; if too much water has been lost, soak in several sessions. Hole irrigation is mainly used on mushroom beds, and is adopted when the mushroom bed produces many mushrooms and nutrient consumption is excessive. The method is to scrape away the soil on the mushroom bed, insert a funnel into the material surface and pour in 4-7 ml of liquid, with a hole spacing of 10 cm, then cover with soil after adding the liquid.
2. The concentration of the added nutrient solution should be appropriate. If the nutrient solution concentration is too high, it will hinder mycelial growth; if the concentration is too low, the yield increase effect will not be obvious. At an appropriate concentration, when adding it, it should also be determined according to the moisture inside the material. If the moisture of the culture material is too high, the nutrient solution concentration can be appropriately increased and the amount of water used reduced; after supplementing the nutrient solution, strengthen ventilation; conversely, reduce the concentration and increase the amount of water used.
3. When adding nutrient solution, pay attention to environmental changes. Generally, when the temperature is above 20°C, the mycelia of mushrooms find it difficult to form fruiting bodies, so liquid supplementation should be stopped; glucose solution, soybean milk juice and human manure urine liquid are all unsuitable for liquid supplementation when the temperature is above 18°C; an appropriate amount of bacteriostatic agent can also be added to the nutrient solution to prevent the growth and spread of contaminating microorganisms.
4. Alternately supplement different nutrient solutions. Using several nutrient solutions alternately or mixed can meet the requirements of edible fungi for different nutrients. Generally, first apply the nutrient solution that adds nutrients, and then apply a high-efficiency nutrient solution. If the hormone method is used to stimulate the growth of edible fungi, then the hormone should be used after supplementing the nutrient agent.
5. Apply organic fertilizer correctly. Compost and manure urine must undergo full fermentation and decomposition or high-temperature disinfection, and plant infusion liquids such as soybean juice and potato juice should be prepared and used immediately.