Beware of bacterial diseases after first harvest of Pleurotus ostreatus

Pleurotus ostreatus is easy to be infected by harmful bacteria at the stage of mushroom emergence, so bacterial diseases such as soft rot and spot disease often occur. On December 13, the reporter saw in some mushroom sheds in Zhujiaya Village, Tianliu Town, Shouguang City, that dark brown water rotted at both ends of some bags that harvested Pleurotus ostreatus, making it difficult for second stubble mushrooms to produce mushrooms.

According to the reporter's analysis, this situation is due to soft rot caused by bacterial infection. When the soft rot of Pleurotus ostreatus occurs, the hyphae degenerates, the surface of the material bag is dark, soft, rotten, accompanied by bad smell. Summarize the causes of the disease in their shed: 1. After the Pleurotus ostreatus was harvested, more wounds were formed on the surface of the bag, which created a "channel" for harmful bacteria to invade the bag, and in addition, some mushroom farmers increased water spraying in order to promote the next crop of mushrooms, resulting in excessive humidity at both ends of the bag and possible water droplets. it is also conducive to the occurrence of bacterial diseases. two。 Recently, under the influence of continuous rainy days, the relative humidity in the shed is too large, the ventilation is poor, and the temperature of the shed is too low, which induces the occurrence of the disease. 3. Some mushroom farmers did not sterilize and disinfect the shed before the material bag entered the shed, so the harmful bacteria encroached on the bag under suitable environmental conditions.

It is suggested that mushroom farmers should comprehensively prevent the occurrence of the disease. Attention should be paid to sterilizing and disinfecting the mushroom shed before entering the shed to reduce the number of harmful bacteria in the shed. The ground can be treated with quicklime, 100 jin / mu. Can also be fumigated through chemical methods, such as the use of 100-speed fumigant, 500 g / mu, closed shed fumigation time in 8 Mel 10 hours. two。 Regulate the environment in the shed. Take night ventilation measures to increase ventilation to meet the needs of Pleurotus ostreatus. During the day, you can create an environment for scattered light for the mushroom shed, and the "flower curtain" measure can be adopted on the surface of the mushroom shed. 3. Chemical control: agricultural streptomycin 5ml + 50ml green wind 95 + green Fenwei No. 1 17g can be sprayed, which can not only control the occurrence of bacterial diseases, but also promote the next mushroom tide, once every 5 days, twice in a row.