Pest control
1. Insect pests that live through winter
The moth-eaten pests are often overwintering. Such as the yellow moth, the old mature larvae in the branch bifurcation, etc. Scarring overwintering; flat moths in the ground in the crevices overwintering winter; the green-spotted moth of the brown edge in the branches and roots in the shallow soil overwinter; The green thorn moth lived in the base of a tree trunk, a scar or a crack in the rough skin.
Control methods
Combined with winter pruning, cut the litchi sticks and burn them together.
During the winter season when the moth is mothed, moths on the branches (yellow moths, green tooth moths) are removed or broken, and the moth (brown green moth) in the shallow soil around the tree base is excavated to reduce wintering Insect source.
2. Larval wintering
(1) The pests of venomous moths mostly overwinter in the bark seams, litters, and tree holes in young larvae; tanners, leaf lizards, peach pods, etc. in the skin of the affected plants, such as skin seams, skins, tree scars, or cutting saws. Overwintering at the mouth; boxwood 绢 绢 茧 茧 茧 茧 茧 茧 茧 茧 茧 茧 茧 茧 茧 茧 茧 巢 巢 茧 茧 茧 茧 茧 茧 茧 茧 梨 梨 梨 梨 梨 梨 梨 梨 梨 梨 梨 梨 梨 梨 梨.
Control methods
Thoroughly clean the fallen leaves in winter, cut off dead branches and burn them together. In winter, the trunks of bark, branches and insects in the cracks were painted white. Elimination of overwhelming insect sources.
(2) The light-edged sword-tailed moth, cotton bollworm, etc. larvae winter in the loose soil.
Control methods
Combine tilling the soil to eliminate overwintering larvae. The grass combined with winter sprinkled with furazane or phoxim particles to kill overwintering larvae.
(3) Pests that are harmful to larvae in the stems, such as Chinese rose stem stalk, Haloxylon scutellariae, A. odorata, Populus trachynotana, etc., generally larvae are used for overwintering in the damaged shoots; Winter in the seeds.
Control methods
The stemming bee of the January season can be trimmed off with the winter pruning to remove the affected shoots. If it is found that the insect body has invaded into the root, a syringe can be used to inject 50-fold imidacloprid EC from 50 ml to 10 ml into the fistula, and immediately seal it with mud, poisoning the remains. larva.
2 H. sylvestris stem bees can be cut off the victim branches, concentrated burned.
(3) The wood-moth moth pests mostly drill larvae in branch bifurcations, coarse bark and wounds, and can use wire hooks to kill larvae in the tract.
(3) The use of earthworms in winter (1) hawk moth, foot moth pests, such as frost hawk moth, grape hawk moth, bean hawk moth, Spodoptera, moth feathers, moths, and other species of venom in the soil Wintering.
Control methods
Can combine tillage soil to remove weeds. Manual digging to kill overwhelming insects. Spray 50% phoxim on the ground around the host to poison the insects in the soil.
(2) Moths and moths, such as American moths, moths, moths, moths, and moths. Mostly, they spend their winters under the old bark of tree trunks, under the crevices of buildings, under the roof, in caves, and debris in bricks, etc.;
Control methods
Thoroughly remove weeds and debris from green areas and surrounding areas. Destroy the overwintering habitat and combine the tilling of soil to eliminate overwhelming insects.
4. The overwintering maggots of egg type are mostly wintering over the bark seams and buds and buds, such as the four-vein Aphis gossypii overwintering on the branches; the quail-type ovum-like or fertilized females are overwintering, such as hawthorn leaves. The adult females of the nymphs and ferrets are overwintered in the gaps between the bark and the soil under the condition of the eggs or fertilized female adults; the adult maggots overwinter under the roofs of the buildings near the lawn, under the trees, under the weeds, etc.; The four-legged crickets of the crumpled leaf disease use the eggs to overwinter between the buds of the white poplar buds.
In addition, the gypsy moth lived in eggs with its full-grown larvae. The egg masses were found in the shade, bark, and crevices at the base of the trunk. Spotted wax moths usually laid eggs on the sunny side of the trunk.
Control methods
Remove pests and branches in winter, remove weeds, and burn them centrally. Manually scrape eggs; scrape rough skin, dead skin, kill overwinter eggs. The trunk is painted white and it kills the wintering eggs in the cortex.
5. Overwintering adults
Most of the adult elephants are overwintering. Adults such as tea-winged pheasants, pupa pods, point bees and red-ridged pheasants live over the grass, litter, eaves, wall joints, and haystacks. The green beetles, leafhoppers, and blue-leaved beetles also shed winters in shelters such as eaves, wall joints, earth, and weeds under bricks and stones.
Control methods
Remove litter, weeds, and debris, centralize treatment and kill overwintering adults. Artificial killing adults
6. To protect the bladder wintering class
Codling moths and codling moths use larvae to overwinter over branches in the protective sac; tussah moths are also generally hovering over twigs with cicadas.
Control methods
After removing the fallen leaves in winter, pockets and pods are manually removed to eliminate larvae and fleas.
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