How to control longicorn beetle larvae?

How to control longicorn beetle larvae? Longicorn beetle larvae are very harmful to fruit trees. how to prevent and cure longicorn beetles? the harm of longicorn beetles: the skin of longicorn beetles is twisted (eating the green epidermis of the trunk); the longicorn beetles are damaged by longicorn beetles larvae, and the xylem is eaten into a crisscross tunnel, and drill down to the root. Seriously affect the transport of water, resulting in weak growth, branches and leaves withered and yellow, showing a lack of fertilizer and water. When killed in the peak period, the fruit can not grow, and the injured plants are easy to be broken by the wind. In the later stage of the plant damage, the injured tissue formed a circular mass due to stimulation, the cork layer of the epidermis was broken, water could not be transported upward, the upper branches and leaves showed yellow wilt, and the lower lateral buds were clustered. When the larva eats to the root, the plant dies. When seriously injured, the whole orchard can be destroyed. The common control methods of longicorn beetle larvae can refer to the following measures: 1. Strengthen management: strengthen cultivation management, reasonable pruning, pay attention to variety configuration, and create a biodiversity planting environment, because, the damage caused by tiger longicorn beetles is less in the appropriate shaded environment than in the full light environment, and the strong-growing fruit trees have a certain insect resistance. Method 2. Timely treatment of seriously damaged plants: when parasitic branches of longicorn beetles are found, about 20 cm of damaged young stems can be cut off, withered plants can be removed, burned centrally or injected into wormholes. When it was found that the stems and leaves suddenly withered from July to August, the withered branches were cleared and captured artificially. Kill adults and larvae artificially, and cut off the injured branches and burn them in time. Method 3. Adopt the method of chemical prevention and treatment: during the peak period of adult hatching, spraying pyrethroid pesticides, 2.5% deltamethrin (dimethoate), 2.5% cyhalothrin (kung fu), 5% fenvalerate (Lefulin), 5% high-effective cypermethrin (high-efficiency fenvalerate), 20% fenvalerate (quick killing), 20% fenpropathrin (cypermethrin), (all above are EC) 1000-4000 times 2000 times of 40% chrysanthemum-horse mixture, 20% chrysanthemum EC and 25% chrysanthemum mixture. Organophosphorus pesticides, 90% trichlorfon crystals, 80% dichlorvos, 40% omethoate, 50% fenitrothion, 50% methamidophos, 40% monocrotophos, 50% phoxim, 50% isocarbophos, 40% methotrexate, 48% chlorpyrifos (above are emulsions) 800-1000 times, and 10% imidacloprid 5000 times, spray garden trees or bait trunks once every 5-7 days to make the liquid flow along the trunk to the roots. Or spray the above solution on the braided bag or sack piece that bandages the trunk, or soak or spray bait tree branches and leaves with these solution. Or smear dry with pyrethroids 200-400 times and organophosphorus 50-100 times. Method 4. The method of poisoning longicorn beetle larvae: when the first instar larvae enter the xylem, 20-30 times of the sand insecticides such as dichlorvos and trichlorfon can be taken, and the solution can be injected into the insect path with a large syringe. If the larvae have gone deep into the branches and drilled into the faecal hole, find out the lowest fecal hole, inject the medicine solution into the human insect path, and then cut a small wooden stake to block the hole, and then kill the larva in it. In production, there are also slime or cotton balls, camphor balls and so on stuffed into wormholes to kill larvae. Method 5. trunk whitening method: 10 parts of quicklime, 1 part of sulfur powder, 0.2 parts of salt, 0.2 parts of cow gum (pre-hot water melting), 30-40 parts of water, or 0.2 parts of trichlorfon were mixed into whitening agent. Control longicorn beetles on the trunk from the root neck to 30 cm from the ground, depending on the spawning position of other longicorn beetles, apply within 2 meters of the lower part of the tree trunk without leakage. Click to get more pesticide application techniques