How to apply fertilizer during the fruiting period of edible fungi? These techniques should be mastered

I. Application methods There are usually 3 methods for adding nutrient solution: spraying, soaking and hole irrigation. The best time to spray nutrient solution is when the fruiting bodies appear in large numbers. When spraying, be careful not to point the nozzle directly at the fruiting bodies, and also observe the "four no-spray" rules: 1. Do not spray on young mushroom buds, so as to avoid "swelling them to death." 2. Do not spray on places where mushrooms have just been picked or where mushroom remnants remain, so as to avoid causing bacterial diseases. 3. Do not spray when air humidity is too high. 4. Do not spray when pests and diseases are severe inside the mushroom shed (room).

The soaking method is mainly used for bag-cultivated edible fungi. After harvesting 1 to 2 flushes of mushrooms, if the cultivation bags are in a state of severe water shortage, they can be soaked in a prepared nutrient solution until they recover or come close to their original weight.

The hole irrigation method is mainly used on mushroom beds. This method can be used when the mushroom bed produces many mushrooms and water and nutrients are consumed excessively. The specific method is: make holes in the mushroom bed at a spacing of 10 cm, flood the mushroom bed with the prepared nutrient solution, and cover with soil after adding the nutrient solution.

II. Appropriate concentration When the nutrient solution concentration is too high, not only is it difficult for the mycelium to absorb it, but it may also hinder or even damage the mycelium. When the concentration is too low, the goal of high yield cannot be achieved. If the water content of the culture material is relatively high, the concentration should be increased, and after adding the nutrient solution, ventilation should be increased. Conversely, the concentration of the nutrient solution should be reduced and the amount of water used should be increased. Commonly used nutrient solution concentrations are: urea 0.3%-0.5%, potassium dihydrogen phosphate 0.2%, etc. Be sure to grasp the principle of "little but frequent."

III. Comprehensive nutrients Several nutrient solutions should often be used alternately, so that the nutrients obtained by the fruiting bodies are both comprehensive and reasonable. If hormones are used to stimulate the growth of edible fungi, they should be used after supplementing the nutrient solution.

IV. Environmental changes When the temperature reaches above 20°C, except for high-temperature varieties of edible fungi, nutrient solution may not be added. If the culture material has already been contaminated by miscellaneous bacteria, be sure to remove the miscellaneous bacteria first before adding nutrient solution. In order to prevent contamination by miscellaneous bacteria, a certain amount of bacteriostatic agent can also be added while adding the nutrient solution, to prevent the breeding and spread of miscellaneous bacteria.