Key techniques for fertilizing edible fungi: the two "appropriates" and two "musts"

The application method should be appropriate. There are usually 3 ways to apply nutrient solution: spraying, soaking and filling holes. The best time to spray the nutrient solution is when the fruiting bodies appear in large numbers. When spraying, take care that the nozzle is not pointed directly at the fruiting bodies, and also observe the "four no-spray" rules: do not spray on tiny young mushroom buds, so they do not "swell to death"; do not spray on places where mushrooms have just been picked or where mushroom debris remains, to avoid causing bacterial diseases; do not spray when the air humidity is too high; and do not spray when pests and diseases are severe inside the mushroom shed (house). The soaking method is mainly used for bag-cultivated edible fungi. After harvesting ~2 flushes of mushrooms, if the cultivation bag is in a state of severe water shortage, it can be soaked in the prepared nutrient solution until it recovers to close to its original weight. The hole-filling method is mainly used on mushroom beds, and can be adopted when the bed produces many mushrooms and water and nutrients are consumed excessively.

The added concentration should be appropriate. When the nutrient solution concentration is too high, not only is it difficult for the mycelium to absorb, but it will also hinder and even damage the growth of the mycelium; when the concentration is too low, the goal of high yield cannot be achieved. The concentration of the added nutrient solution should be determined according to the water content of the culture material: if the water content of the culture material is relatively high, the concentration of the nutrient solution should be increased, the amount of water used should be reduced, and ventilation should be increased after adding it; conversely, the concentration of the nutrient solution should be lowered and the amount of water used increased.

The nutrients in the nutrient solution should be comprehensive. Several nutrient solutions should often be used alternately, so that the nutrients needed for the growth of the fruiting bodies are both comprehensive and reasonable. If hormones are used to stimulate the growth of edible fungi, this should be done after supplementing the nutrient solution.

Pay attention to changes in the environment. If the culture material has already been contaminated by miscellaneous fungi, be sure to remove the miscellaneous fungi first before adding the nutrient solution. To prevent contamination by miscellaneous fungi, a certain amount of bacteriostatic agent can also be added while adding the nutrient solution, to prevent the miscellaneous fungi from breeding and spreading.