Myxozoan, Lepidoptera, Noctuidae. The armyworm is a leaf-feeding pest. When the harm to the cultivation of edible fungi is serious, the mushroom bud cover is eaten and lighted to form a headless mushroom.
Hazardous symptoms: larvae feeding Pleurotus ostreatus, straw mushroom, hair fungus, Ganoderma lucidum and other species, while eating, at the same time, discharge a large amount of feces to contaminate the mushroom body and mushroom bed, induce other bacteria infestation. The larvae endanger the hairy auricularia and feed on the frontal bacteria, leaving the epidermis on the back of the ear. When eating ganoderma lucidum, feed the fungus on the fungus and cause bent tunnels. Harmful to other species, fruiting bodies form irregular, missing holes.
Morphological characteristics: Adult body length 17-20 mm, wings 35-45 mm, body wings grayish brown. Eggs: Tassel-shaped, 0.5 mm in diameter with reticular ridges on the surface. It was milky white at the time of first production and later became yellowish-white and grayish black before hatching. The eggs are arranged in a single layer to form an egg mass.
The law of occurrence: Myxozoan domestically takes 1-8 generations. Adults are nocturnal, and there are often 3 activity peaks at night: after sunset, after midnight and before dawn. They are related to activities such as adult feeding, copulation and finding hidden places. There is a strong tendency towards the mixture of sugar, vinegar, and wine, and foods rich in starch, such as sugar cane, distiller's grains, and flour, are also used. The phototaxis is weak, but it has a certain tendency towards black light. Insects are moderately wet and wet insects, the optimum temperature is 19-22 °C, relative humidity greater than 70%; temperature is lower than 15 °C or higher than 25 °C, relative humidity is lower than 65%, adult oviposition, larval hatching and Survival has a significant impact.
Control methods:
1. Before the mushroom house is used, the closed mushroom house can be killed by using a "mushroom and insect smoked net" or "smoking insect 120 smoke bomb insecticide" fumigation mushroom house.
2. The old and new mushroom bags in the mushroom house are not allowed to be mixed. The waste after the mushroom is harvested every season must be dealt with in time, and the mushroom house can be re-sterilized before the new mushroom can be planted.
3. After larvae are found in the bacterium bag, trapping can be used. After dipping water 500 times, add half a catty of white sugar and half a bottle of white vinegar to each sprayer (15 kg). Mix and spray directly on the mouth of the bag. The principle of prevention and control is that the pests like to eat sweet and sour, and when the larvae in the bacterium bag smell the sweet substance in the bag mouth, they will climb out of the bag and eat and die.
For users with small plant size, after the larvae occur, they can also soak the mushroom bags with 1000-fold "Chongxinjing" liquid for about 4 hours after harvesting mushrooms. This will not only supplement the moisture of the bag, but also It has a strong killing effect on the insect pests in the bag. (The main component of insect pests is diafenthiuron, a biological pesticide that does not harm the hyphae and does not harm the mushroom body)
4. The planting period can be about 4 days apart. At night, the mushroom house is closed, and the mushroom house is smoked with a "mushroom and insect" or "mosquito insecticide of smoked insects". The effect is very good.
Improved cultivation measures:
The strain culture room should be regularly inspected and fumigated. When producing strains, cotton balls should be used to tighten the test tubes and a layer of kraft paper should be used to prevent insects from invading. If pests have been found, they must be treated by fumigation or low temperature freezing and the pests can be used only after checking to determine the death of pests.
After harvesting mushrooms, we must carefully clean the surface of the material, remove mushroom roots and ragweed mushrooms and concentrate deep.
Fumigation (including racks, tools, etc. used for mushrooms) should be performed on old culture rooms with severe disease. The method is: fumigation with a ratio of 40 grams of potassium permanganate in 80 ml of formalin per cubic meter volume, the container containing potassium permanganate should be deep, and its volume should be larger than that of formalin. 40 times more. Close the cultivation room when fumigation, open the doors and windows after two days for ventilation, and then put the bag into the bag after 24 hours. Sulfur can also be used for fumigation, the amount of 5 grams per cubic meter, closed 48 hours after the ventilation and then feed.
After finishing collecting 3-4 oyster mushrooms, the granules shall be removed in time, and the high-temperature compost fermentation or spraying shall be conducted away from the mashroom to prevent the insects from breeding in the waste.
It is forbidden to place a new mushroom house together with the old and new culture blocks to prevent pests from spreading to the new mushroom block.
In addition to the fumigation and secondary fermentation of the culture material, the casing material also has to undergo high temperature or chemical treatment.
To properly water, in particular, to avoid direct spray water to the mushroom body, excessive watering, mushroom bed and mushroom house humidity caused by the general assembly of mycelium and mushroom bud rot, easy to breed pests.
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