How is topdressing effective in the later stage of edible fungus?

Edible mushroom late how topdressing has effect.

In the late stage of mushroom production, topdressing can bring good results to the growth.

1. Choose the appropriate method of addition. There are three ways to add nutrient solution: spraying, soaking and watering. The suitable time of spraying nutrient solution was when the fruiting body appeared in large quantity. When spraying, pay attention to the spray nozzle not facing the fruiting body, and pay attention to the "four no-spraying": young mushroom buds do not spray, so as not to "swell and die"; just picked mushrooms or mushroom residues do not spray, so as not to cause bacterial diseases; air humidity is too high when not spraying; mushroom shed (room) serious diseases and insect pests do not spray. Soaking method is mainly used for bag cultivation of edible fungi. After harvesting 1~2 mushrooms, if the cultivation bag is in a serious water shortage state, it can be soaked in the prepared nutrient solution until it recovers to the original weight. Nutrient solution is added by soaking, generally by putting the bacteria bag into the nutrient solution pool and pressing heavy objects. And the soaking time should not be too long. If the bacteria bag loses too much water, it can be soaked several times. Point irrigation method is mainly used in the fungus bed, when the fungus bed more mushrooms, water and nutrient consumption is too large can be used this method. The concrete method is: drilling the bacterial bed according to the hole spacing of 10 cm, flooding the prepared nutrient solution into the bacterial bed, and covering the soil after adding the nutrient solution.

2. The concentration should be appropriate. When the concentration of nutrient solution is too high, it is not only difficult for mycelium to absorb, but also hinders or even damages the growth of mycelium; when the concentration is too low, the goal of high yield cannot be achieved. When adding nutrient solution at appropriate concentration, it should be determined according to the water content of the culture medium: if the water content of the culture medium is high, the concentration of nutrient solution should be increased, the water consumption should be reduced, and the ventilation amount should be increased after addition; otherwise, the concentration of nutrient solution should be reduced and the water consumption should be increased.

3. Nutrient solution nutrients to be comprehensive. Several nutrient solutions should be used alternately frequently, so that the nutrients required for the growth of sub-entities are comprehensive and reasonable. If hormones are used to stimulate the growth of edible fungi, they should be used after supplementing nutrient solution.

In the later stage of edible fungi growth, we should adopt the correct topdressing method to achieve the expected purpose.

In the later stage of mushroom production, mushroom farmers often use various means to add nutrient solution for topdressing in order to enhance the aftereffect of mushroom production. However, only by using the correct method to add, can we achieve the desired purpose. On the contrary, such as weir seedling growth, counterproductive, to bring losses to producers.

First, pay attention to the method of adding nutrients. There are usually three ways to add nutrients: spraying, soaking and irrigation. The suitable time of spraying nutrient solution was when the fruiting body appeared in large quantity.

When spraying, pay attention to the nozzle not facing the fruiting body, and pay attention to the "four do not spray": 1. Young mushroom buds do not spray, so as not to "swell". 2. Do not spray fresh mushrooms or mushroom residues to avoid causing bacterial diseases. 3. Do not spray when the air humidity is too high. 4. Mushroom shed (room) when serious diseases and insect pests do not spray. Soaking method is mainly used for bag cultivation of edible fungi, after harvesting 1-2 crops of mushrooms, if the cultivation bag is in a serious water shortage state, it can be placed in the prepared nutrient solution to soak until it returns to the original weight. Add nutrient solution by soaking method, just put bacteria bag in nutrient solution pool and press heavy object, but the soaking time should not be too long, if bacteria bag loses too much water, it can be soaked several times. Point irrigation method is mainly used in the fungus bed, when the fungus bed more mushrooms, water and nutrient consumption is too large can be used this method.

When the concentration of nutrient solution is too high, it is not only difficult for hyphae to absorb, but also hinders or even damages hyphae; when the concentration is too low, the effect is not obvious, and the purpose of high yield cannot be achieved. At the appropriate concentration, the addition of nutrient solution should also be determined according to the moisture content of the culture medium: if the moisture content of the culture medium is high, the concentration of nutrient solution should be increased, the amount of water should be reduced, and the amount of ventilation should be increased after addition. On the contrary, the concentration of nutrient solution should be reduced and water consumption increased. Commonly used potassium dihydrogen acid 0.20%, etc., we must grasp the principle of "less and more".

Third, nutrient solution nutrients should be comprehensive, several nutrient solutions should be used alternately, so that the nutrients required for the growth of such entities are comprehensive and reasonable. If hormones are used to stimulate the growth of edible fungi, they should be used after supplementing nutrient solution.

4. Pay attention to the change of environment. When the temperature is above 20℃, it is difficult for hyphae to form high-quality fruit bodies. Nutrient solution may not be added except for high-temperature edible fungi varieties. If the culture medium has been contaminated by miscellaneous bacteria, be sure to remove the miscellaneous bacteria before adding nutrient solution. In order to prevent contamination by miscellaneous bacteria, a certain amount of bacteriostatic agents can also be added to the nutrient solution to prevent the breeding and spread of miscellaneous bacteria.