What are the dried borer pests? How to prevent it?

With the rapid development of China's forestry industry and the continuous increase in the number of urban green trees, forest pests have also begun to increase significantly, causing serious harm to trees. As a type of tree pest, dried borer pests naturally affect the growth of trees. Moreover, most of the dried moth pests live in seclusion, which is difficult to control. Today, Xiaobian will lead you to understand the types, hazard characteristics and control schemes of dried borer pests, and lay a solid theoretical foundation for the prevention and control of dried borer pests.

Dried moth pest species

At present, there are 12 main species of dried moth pests, which can cause harm to most common tree species. Star celestial cattle, both north and south, occur in both the north and south, mainly harmful willow trees, red maples, heather, etc.; bare-shouldered star celestial cattle, the north occurs more, mainly harmful to cherry blossoms, plane trees, poplars, etc.; mulberry cattle, both north and south, mainly harmful trees, figs, cherries, begonias, cherry blossoms, etc.; peach-necked celestial cattle, the north occurs more, mainly harmful willow trees, poplars, peach trees, almond trees, etc.; double-striped fir tianniu, the north occurs more, mainly harmful side cypress, luohan pine, juniper cypress, hinoki, pine and other coniferous trees; pine brown sky cattle, both north and south, occur. As a vector of transmission of pine wood nematodes, mainly harmful pine trees, spruce, etc.; cloud-spotted white striped cattle, both north and south, mainly harmful to poplars, willows, elms, ash, etc.; poplar dry winged moth, both north and south, mainly harmful to poplars, chestnuts, etc.; Poplar through-winged moth, north and south, mainly harmful to poplar trees, willow trees, etc.; Japanese double-spined beetle, mainly harmful to locusts, oak trees, elms, etc.; coffee wood beetle moth, mainly harmful to coffee, cocoa, tea tree, peach tree, jujube tree, lychee, etc.; cypress-skinned beetle, It is mainly harmful to cypress, cypress cypress, fir trees and so on.

Hazard characteristics

1. Hidden life: Except for the naked life of the adult camp, all other insect states live in the phloem and xylem camp. Pest damage is not easy to detect in the early stage, and once there are obvious signs of harm, the favorable opportunity for prevention and control has been lost;

2. Stable insect population: most of the branch pests live inside the plant tissue, which is less affected by environmental conditions, has few natural enemies, and the density of the insect population is relatively stable;

3. Serious harm: branch pests eat phloem, xylem, etc., affecting the transmission system to transmit nutrients and water, resulting in tree weakness or death, once damaged, it is difficult for the plant to recover its vitality;

4, control difficulties: because it is harmful in the branches, the manual control efficiency is low, and the chemical control has the problem that the agent is not easy to contact with pests.

Prevention and control programmes

The occurrence of dried moth pests is closely related to the care and management of garden plants. Suitable land for trees, strengthen care management, reasonable pruning, timely irrigation and fertilization, and promote healthy plant growth are the fundamental ways to prevent the occurrence of secondary pests; when insect pests have occurred in large areas, special control measures should be adopted in a timely manner to minimize the harm.

1, suitable for the right place, prevention first

For greening areas where serious borer pests occur, it is necessary to take the species of trees that eat for the Tianniu, select the resistant tree species to avoid their serious harm; strengthen management and enhance the tree potential; in addition to the ancient trees and famous trees, cut down the seriously damaged insect source trees, rationally prune, and timely remove the dead standing trees and wind-folded trees in the park.

2, artificial control, especially the larger insect body of the tianniu is more suitable for this method

(1) Artificially kill adult insects during a period of time in canopy activity (nutrient replenishment, tail mating and spawning) after feathering. (2) Look for egg laying grooves, and destroy the eggs in them by hammering, hand peeling, etc. (3) Kill the larvae with a wire hook. Especially for small larvae shortly after the new hatching, this method is easier to operate.

3. Bait wood booby trap

For the tianniu on the ancient trees and famous trees in the park and other scenic spots, bait wood can be used to trap and kill, and timely repair tree holes, dry base whitening, etc., to reduce the density of insect populations and ensure its ornamental value.

4. Protect and utilize natural enemies

Such as artificially attracting woodpeckers, using tianniu swollen leg bees, bees and bees.

5. Pharmaceutical prevention and treatment

Select moth clear bottle or Cheng Tapping + Guangzheng spray control.