In the later stages of mushroom mushrooming, mushroom growers often add nutrient solutions to enhance the stamina. However, only the correct method can be used to achieve the intended purpose. Addition methods There are usually 3 methods for adding nutrient solution: spraying, soaking and burrowing. The time of spraying the nutrient solution is suitable when a large number of fruit bodies are present. Spray should pay attention to the nozzle does not face the fruiting body, but also pay attention to the "four does not spray": 1. Young mushroom buds do not spray, so as not to "swollen." 2. If you have just taken a mushroom or mushroom residue, do not spray it so as not to cause bacterial disease. 3. Do not spray when the air humidity is too high. 4. Shetpen (room) is not sprayed when the pests and diseases are serious. The soaking method is mainly used for bagged edible fungi. After harvesting 1-2 mushrooms, if the cultivation bag is in a state of severe water shortage, it can be soaked in a well-matched nutrient solution until it recovers or approaches its original weight. The method of irrigating acupuncture points is mainly used on the bed of bacteria. This method can be used when the mushroom bed has many mushrooms and the consumption of water and nutrients is too large. The specific method is as follows: The bacteria bed is drilled at a distance of 10 centimeters, and the prepared nutrient solution is flooded into the bacteria bed, and the soil is added after the nutrient solution is added. When the concentration of an appropriate nutrient solution is too high, not only is mycelial absorption difficult, but it also impedes or even damages the hyphae. When the concentration is too low, the purpose of high yield cannot be achieved. If the moisture content of the culture material is high, the concentration should be increased. After adding the nutrient solution, increase the ventilation. Conversely, the concentration of nutrient solution should be reduced to increase water consumption. The concentration of commonly used nutrient solution is: urea 0.3% ~ 0.5%, potassium dihydrogen phosphate 0.2%, etc., we must grasp the "small and diligent" principle. Nutrients should be used interchangeably in several nutrient solutions, so that the nutrition obtained by the fruiting bodies is comprehensive and reasonable. If hormones are used to stimulate the growth of mushrooms, they should be used after supplementing the nutrient solution. Environmental changes When the temperature reaches 20°C or above, nutrient solutions may not be added except for high-temperature edible mushroom species. If the culture material has been contaminated with bacteria, be sure to remove the bacteria before adding nutrient solution. In order to prevent bacterial contamination, it is also possible to add a certain amount of bacteriostatic agent while adding nutrient solution to prevent propagation of germs.