Occurrence and control of fungus mite in edible fungi
1、 Living habits
Fungus mites, commonly known as "fungus louse", are harmful pests in the production and cultivation of edible fungi. There are two common mites (small, brown, gregarious, slow-moving) and acaroid mites (slightly larger, powdery white, like to walk alone and move fast). They have strong reproductive capacity and are difficult to detect by naked eyes when they are scattered. When they occur in large numbers and are found, they have caused trouble for cultivation and can not be eliminated completely, making people unable to defend themselves. Mites mainly breed in grain depots, chicken houses and other places, and are mostly brought into mushroom sheds through wheat bran, cotton bran and other culture materials, strains, mosquitoes, flies and tools. It is sensitive to fungus and mycelium, and is harmful to fungus and fungus.
2、 Damage symptoms
The fungus mites feed on the mycelium directly, resulting in no bacteria or "regression" phenomenon after inoculation, which makes the culture material black and even rotten. When mite damage occurs in fruiting bodies, a large number of bacillary mites climb onto the fruiting bodies, feed on basidiospores in the folds, and inhabit in the folds. The damaged parts change color or appear micropores, which not only affect the quality of fresh mushrooms, but also endanger human health. If people eat a certain amount of bacteria mites, they will cause diarrhea and other intestinal diseases. When there are large numbers of puccid mites, they often migrate to the surface culture material or cover soil in groups, such as spraying a layer of yellow powder. If the palm or colored film is placed on the material surface for one minute, the presence of mites will be felt or observed.
3、 Control methods
Adhere to the "prevention first, comprehensive prevention and control" policy, otherwise, (www.novmv. Com) once damaged, it is difficult to eliminate.
1. Mushroom house and spawn farm should be far away from warehouse and chicken house.
2. Strictly control the strains and strictly check whether there are mites in the introduced strains.
3. Make sure that there is no mite in the medium before sowing. ① Medicament mixture: diluted 1000 times with 50% -- fenone EC; ② high temperature acaricide: ferment the culture material.
4. Killing mites in mushroom house: ① keep mushroom house clean. In order to eliminate the source and route of transmission, the wastes and diseased mushrooms should be removed in time. Closed mushroom shed, fumigation with aluminum phosphide, 8-10 g / m3, highly toxic, pay attention to safety. ③ Acaricidal chemicals: dicofol and phoxim mixed use; 25% washing powder 1400 times spray; 1:1200 Omethoate; 0.15% malathion; 500 times clotrimate; 50% Omethoate 1000 times solution; 1500 times of fenpropathrin, etc. ④ To trap and kill mites. Sweet and sour medicine: 1 part of acetic acid, 1 part of water, 0.2 parts of sugar, after mixing, drop 1-2 drops of dichlorvos to prepare the sweet and sour medicine solution. Use gauze or cotton to soak the liquid medicine and spread it on the material surface. When mites swarm on it, take it off and scald to death. Repeat. When the temperature is low, spray on the bed surface, cover with plastic film, pull curtain to raise temperature, mites hidden in the depth tend to gather on the surface and kill them with chemical agents.
Entrapment of pig bone: the fresh bone is placed on the mushroom bed. After the mite is gathered on it, it is scalded to death with boiling water..
Trap and kill rapeseed cake: spread wet cloth on the damaged bed, sprinkle with just fried rapeseed cake, lure mites and scald it.
Trapping and killing of tobacco leaves: spreading fresh tobacco leaves on the bed surface, trapping mites and burning them.