Pleurotus ostreatus, Pleurotus ostreatus and other edible fungi are common foods in daily life. They have a crisp taste and rich nutrition. They are favored by consumers and have high planting value. In order to enhance the stamina of mushrooms and increase the yield efficiency of edible mushrooms, edible mushrooms will be fertilized and topped in the later stages of mushroom emergence. However, if it is improperly fertilized, it is easily counterproductive. Therefore, it is very important to master the fertilization and topdressing techniques of edible fungi. The most important thing is to master the "two adaptations and two needs". The main technical points of fertilization and topdressing management of edible fungus are introduced as follows.
1. The method of addition should be suitable
There are usually three ways to add nutrient solution: spraying, soaking and irrigating. The time for spraying nutrient solution is appropriate when there are a large number of fruiting bodies. When spraying, you should pay attention to the spray head not facing the fruiting body, and pay attention to the "four not spray": the young mushroom buds are not sprayed, so as not to "swell"; the freshly picked mushrooms or mushroom residues are not sprayed, so as not to cause Bacterial diseases; do not spray when the air humidity is too high; do not spray when the pests and diseases in the mushroom shed (room) are serious.
The dipping method is mainly used for edible fungi grown in bags. After the harvest of 1-2 tide mushrooms, if the cultivation bag is severely dehydrated, it can be soaked in the prepared nutrient solution until it returns to near its original weight. To add nutrient solution by soaking, generally put the bacteria bag in the nutrient solution pool and press the heavy object, and the soaking time should not be too long. If the bag loses too much water, you can soak it in several times. The irrigation method is mainly used on the bacteria bed. This method can be used when the mushroom bed has more mushrooms and the water and nutrients are consumed too much. The specific method is to punch the bacteria bed at a hole distance of 10 centimeters, flood the bacteria bed with the prepared nutrient solution, and cover the soil after adding the nutrient solution.
2. Add concentration should be appropriate
When the concentration of the nutrient solution is too high, not only is it difficult to absorb the mycelium, but it will also hinder or even damage the growth of the mycelium; when the concentration is too low, the purpose of high yield cannot be achieved. The concentration of the added nutrient solution depends on the water content of the culture material: if the water content of the culture material is high, the concentration of the nutrient solution should be increased, the water consumption should be reduced, and the amount of ventilation should be increased after addition; otherwise, the nutrient solution should be reduced Increase the water consumption.
3. The nutrients of the nutrient solution should be comprehensive
Several nutrient solutions should be used alternately, so that the nutrients required for the growth of fruiting bodies are both comprehensive and reasonable. If hormones are used to stimulate the growth of edible fungi, they should be carried out after supplementing the nutrient solution.
Fourth, pay attention to changes in the environment
When the temperature is above 20 ℃, the mycelium is difficult to form high-quality fruiting bodies, except for high-temperature edible fungus varieties, no nutrient solution can be added. If the culture material has been contaminated with bacteria, be sure to remove the bacteria before adding nutrient solution. In order to prevent the contamination of mixed bacteria, a certain amount of bacteriostatic agent can also be added at the same time when the nutrient solution is added to prevent the growth and spread of mixed bacteria.
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