How to control soft rot of Pleurotus ostreatus

Dong Yushan from Ligou Town, Pingyin County, Shandong Province said: "the Pleurotus ostreatus planted in our town and its surrounding towns appeared small yellow-brown spots at the mushroom emergence stage, especially when the fruit body was about 1 cm in diameter, and then expanded rapidly. Finally, the whole fruiting body turned brown, soft, sticky and finally rotted, even if the mycelia in the rods were still very white, but it was difficult to produce mushrooms again. What is this disease? How to prevent and cure it?

The host's reply is as follows:

The situation reflected by this friend also occurs more frequently in other areas. from the disease described, it is the soft rot of Pleurotus ostreatus that has plagued producers in recent years, especially in old mushroom houses that have been produced for more than two years. Due to the disease in the edible parts, can not use conventional fungicides, therefore, the disease should be mainly to prevent, cultivation should pay attention to the following links: ① culture material treatment: select fresh cotton husk or corncob and other raw materials, before mixing should be exposed in the sun for 2 days, the use of ultraviolet light to kill some of the culture materials of miscellaneous bacteria. When fermentation, the fermentation process should be strict, so as to be comprehensive, uniform and thorough. Products such as temperature-increasing starter, Lixin fungus king or anti-mildew king can be added to improve the fermentation effect and the anti-bacterial ability of the culture material itself. ② culture period management: when the mushroom bag is cultivated, it should be cultured in a cool, ventilated and clean place, and should not be cultivated in the mushroom room (shed) as far as possible, so as to avoid breeding a large number of miscellaneous bacteria in the mycelium culture process, infecting the culture material or causing contamination of the mushroom place, and avoid burning bacteria at high temperature to reduce the vitality of the mycelium. In short, it is necessary to promote the exuberant and rapid growth of mycelium and produce mushrooms smoothly. ③ mushroom house treatment: before using the mushroom house, it is best to expose yourself to the sun in an empty shed for a period of time, or rotate with other crops. 2-3 days before entering the mushroom room (shed), the old mushroom shed should be thoroughly cleaned and disinfected. Fumigant, sulfur or formaldehyde can be used. ④ soil disinfection: the soil used in the cultivation process should be the raw soil of the field or vegetable garden, away from domestic waste and livestock and poultry farms, etc. And the selected covered soil was disinfected and piled up.