The cloud beetle belongs to the order of Coleoptera, Cerambycidae. Also known as Walnut Bighorn. Harmful walnuts, apples, pears and other fruit trees and poplars, willows, mulberries, alfalfa and other trees.
Symptoms of victimization: The cortex in the affected area is slightly cracked, and a large amount of dung was discharged from the wormhole. Late cortical detrimental damage. Adult eclosion is mostly in the upper part, showing a large round hole. The larvae drill tunnels in the cortex and xylem and excrete feces and sawdust from the boreholes. The damaged trees are gradually destroyed due to the destruction of the vegetative organs.
There are six prevention and control methods for the living habits of this insect:
1. Manually kill adult worms. The use of adult phototaxis, do not like to fly, slow action, the characteristics of the sound after being frightened, in the period of adult emergence, in the evening holding the light to kill, or artificial capture in the morning.
2, killing eggs and newly hatched larvae. Check the adult egg-laying groove, look for eggs, use a knife to dig or hammer the egg to death. During the hatching period of eggs, smear 50% of agaricus oil at the spawning groove to kill the newly hatched larvae.
3. When the larvae have dried and damaged, they find that when there are dung effluents on the trunk, the larvae are peeled off with a knife, or 50% of dichlorvos is injected from the wormhole. Severe wormholes poison poisons.
4. From mid-August to late-September, insert Zinc Phosphate Dip into the hole of the Cloud Class Cattle, which has a significant effect on the killing of adults and larvae.
5. In winter or before spawning, use 5 kg of lime, 0.5 kg of sulfur, 0.25 kg of salt, 20 kg of water, and apply to the base of the stem to prevent adults from laying eggs and kill larvae.
6. To deal with severely damaged trees more than 20 years old (ie, dead wood dead trees) in autumn and winter or early spring to reduce the source of insects.
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