Ganoderma lucidum tiger
The ground tiger belongs to Lepidoptera, Noctuidae. It is not only an important pest on agricultural and forestry crops, but also a common pest in the cultivation of edible fungi such as Ganoderma lucidum, Tremella fuciformis, fungus and Pleurotus ostreatus. It occurs more frequently in outdoor open field sunny bed cultivation and plastic greenhouse.
The larvae feed on the hyphae of Ganoderma lucidum, inhibit the growth of hyphae, affect the formation of fruiting bodies, and decrease the yield and quality of Ganoderma lucidum.
Morphological characteristics
The adult body is 16-23 mm long, with a wingspan of 42-54 mm, dark brown, with black reniform or annular lines in the middle of the forewing, and two longitudinal bands from the leading edge to the trailing edge, with gray-white hind wings.
The larvae are brown, and the mature larvae are about 40 mm long, with a distinct topline, rough body surface and covered with small black protuberances. There are 4 obvious small black spots on the back of each segment of the abdomen, which are arranged in a trapezoid shape. There is a harder buttock plate at the end. There are two dark brown longitudinal bands on the buttocks.
Tiger is a kind of omnivorous pest that lives in soil. It can not only eat hyphae in culture material, but also cause damage to fruiting bodies. The occurrence of mushroom houses with extensive management is more serious.
Prevention and cure method
The main results are as follows: (1) strengthen the cultivation management and install screen windows and doors in the cultivation room to prevent adults from flying into the culture room to lay eggs. Timely ventilation, increase mycelium absorption of oxygen, do a good job in environmental hygiene, and collectively dispose of the surrounding wastes.
(2) it is best to disinfect the cultivation room with potassium permanganate before cultivation.
(3) when larvae are found to be harmful, they should be caught and killed in time.
(4) the green vegetable leaves can be mixed with 90% trichlorfon and then sprinkled in the cultivation room.
Potassium permanganate and trichlorfon are commonly used.
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Ganoderma lucidum section wood culture method
For the selection and treatment of ① segment trees, broad-leaved trees such as oak, chestnut, tussah, peach, willow, poplar and Robinia pseudoacacia should be selected. The diameter is 5cm to 15cm. Immediately after the selection of tree species, cut down, but do not have to peel, saw grew into a 1-meter section of wood. If the moisture content of the tree species is higher, it should be piled up and dried until the wood wedge is used to enter the wood, and when the sap does not flow out, it can be inoculated. During the period of ② inoculation, the air temperature should be 20: 26 ℃ and the air relative humidity should be below 60%, which is beneficial to dry culture and avoid.
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Bridge-building insects of Ganoderma lucidum
The bridge worm of Ganoderma lucidum (scientific name to be determined) belongs to the family Lepidoptera. The insect harms the fruiting body of Ganoderma lucidum, and the first instar larvae feed on the surface and edge of the cap, resulting in concave ponds and defects. After the 3rd instar, it can directly eat into the interior of the fruiting body and discharge a large amount of feces, which not only pollutes the mushroom body, but also causes weeds such as green mold to multiply, harms the growth of Ganoderma lucidum, reduces the yield and damages the quality. (1) Adult with morphological characteristics: 12mm in length, 25mm in wingspan, grayish black in body; filiform antennae with 8 small black spots on the outer edge of the forewing and a large black spot in the middle of the front edge.
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