Lychee tree insect pests are harmful, how to control?

Litchi tree pests to lychee bugs, flower and fruit moths, lychee gall mites, geometrids, aspergillus species, wood-boring moths, mealybugs, whiteflies, lychee leaf gall mosquitoes and so on are more widespread. The following side of the detailed introduction to litchi pests and diseases produced and control methods, teach you to learn how to treat litchi pests.

1, lychee stinkbugs how to prevent

Lychee stinkbugs how to prevent

Lychee stinkbugs produce one generation per year, to sexually underdeveloped worms over the winter. 2-April crossing, March-May egg-bearing the most prevalent. The first hatching larvae are dispersed after a few hours to feed, injuring the shoots, flower spikes and fruits, resulting in blight, flower drop and fruit drop. Preventive measures:

①From the wintering insects gradually theme activity to the egg before, or in the egg mass of the first hatch, spray 90% of trichlorfon 600 times liquid, or 20% of the Anlvbao 100

② in the lychee stinkbugs eggs in the early stage of the release of the belly of the small bees to carry out microbial control.

2, the control of lychee moth

Lychee moth control

The larvae hatch from the bottom of the eggshell into the fruit or shoot feeding, resulting in fruit drop, worm droppings, fruit, flower spikes, or shoots withered, the mature larvae in the depressed leaves cocoon chrysalis. Preventive measures:

①Suppress the winter, do a good job of clearing the garden to reduce the source of insects.

②Spray 90% trichlorfon 800 times 8817 times solution, or 20% Anlongbao 1000 times solution when the rate of pupal montage reaches 40% and 80%.

3, lychee small gray butterfly how to prevent

Lychee pests how to control

A year produces three generations, the first generation of larvae in April-May drilling mosquitoes to harm the mature species of fruits, generally from the middle of the fruit drilling into the fruit moths, coiled peach kernel and the Department of the kernel, the cavity hole near the round neat and polished, the cavity hole is not attached to the worm feces, which can lead to the fall of the fruit.

Method of control: spraying with 8817-500 times liquid or 20% speed kill Ding 8000 times liquid, the actual effect is very good.

4, turtleback aspen. Adult body back by gray-black and budgerigar color plush patches, shape nearly turtle shell-like patches. Eggs are mostly produced from the thick 1-3cm branches or branch forks under the cortex, after oviposition, the larvae to the bark of the tree feeding, and slowly deeper phloem produces a long cavernous tract. Adults like to eat around the bark of the tree to cause the branches to become dry.

Prevention

①Manpower to hunt adults, and often check the branches in August-December, found that the cortex of the crescent-shaped egg point that is scraped with a knife to remove the egg particles or the first hatch of moving insects;

② with a cotton ball dipped into the solvent 5-10 times the solvents or insecticidal bisulphides, stuffed into the moth channel;

③ with the "KNUCKERING" gelatin pills to kill the larvae fumigated with the actual effect of more powerful.

The above is my detailed introduction, I hope that after reading it will help you.