Why are there so many yellow mushrooms recently?

Recently, I have received a lot of calls from mushroom farmers, saying that they have yellowed and died. I do not know what the reason is. After investigation, the author thinks that the following aspects can be used as a reference for the majority of mushroom farmers.

1. Most of the recent diseases are brown rot, brown spot, yellow spot and so on.

The pathogens are verrucosporium, Verticillium, Staphylococcus heterogenes and so on. These pathogens have strong survival ability, low temperature tolerance, high humidity and normal growth in about 10 ℃. They are common pathogens from late autumn to early spring.

2. The cause of the disease.

It is mainly due to improper management in the low temperature season. in the low temperature season, the humidity in the mushroom shed may be too high, excessive water spraying, too much free water attached to the mushroom body, and can not evaporate after absorbing water, resulting in the weakening of the metabolism of the mushroom body and the entry of various pathogens. Multiply in large numbers, and cause various diseases of the fruiting body The second cause of the disease was the continuous low temperature weather in the mushroom shed some time ago, which caused the temperature in the mushroom shed to be too low, and the edible fungus fruiting body was in a bad living environment for a long time, which led to the disease; the third cause was that some edible mushroom varieties were in 3-4 stubble in the mushroom emergence period. the nutrition in the bacteria bag is malnourished, and the fruit body after budding can not get sufficient nutrition supply, resulting in yellowing death.

3. The methods of prevention and control are as follows:

First, all kinds of fungicides should be often sprayed out of the mushroom shed, such as germicidal, bacterial killing, mushroom disinfecting king, trimethoprim, etc., generally can be sprayed once a week; second, when the temperature of the mushroom shed is too low, it is appropriate to spray too much water and humidity to ensure the normal growth of the fruiting body; the third is to increase the temperature of the mushroom shed as much as possible. as for Pleurotus ostreatus, the greenhouse temperature should be above 15 ℃ during the day. Fourth, correct understanding of the temperature type and normal growth temperature of all kinds of varieties, targeted management and correct management; fifth, all kinds of disease-resistant and yield-increasing agents should be often sprayed on the mushroom body. you can choose Mushroom Feng No. 1, Everbright fungus King, Lixin fungus King, three-dimensional nutrition essence, mushroom guard, mushroom multiplicity and so on; sixth, once the disease occurs, you can spray bacteria kill, kill bacteria, dispel mushroom disease king, mushroom guard, Guangda fungus king, Lixin fungus king and other comprehensive prevention and control.