1. Acacia inchworm (hanging ghost) (Lepidoptera)
Hazard situation: mainly harmful to the national locust, dragon claw locust, larvae to feed on the leaves, in severe cases can eat the leaves to drain a large amount of feces and spit silk drooping, polluting the garden.
Life Habits: Occurs three generations a year to pupate in the soil under the tree for the winter. In mid-April of the following year, the adults fall in the bushes during the day and lay eggs actively at night, with phototropism. The first generation of the hazard period is in mid-May, the second generation is in late June, and the third generation is in early August, and after the larva matures, the spit sags and pupates into the soil.
Drug control: In addition to the use of dichlorvos octylthion emulsion can be used pollution-free agents. (1) 20% insecticide urea No. 1 1: 6000 times (for pre-triad use) ;(2) BT emulsion 1: 800 times; (3) 1.2% smoked ginseng emulsion 1: 1000 times
2. Mulberry-folded winged ulnar moth (Lepidoptera)
Hazards: endangering poplar, willow, elm, luan tree, ash, pomegranate, mulberry, begonia, peach, clove, gold and silver wood, Jiangnan locust, etc.
Life habits: One generation a year, pupae in the soil for winter, feathering in early April of the following year, insect infestation in May, pupate in the soil from late May to early June.
Comprehensive control methods: (1) in early April, pruning the branches with eggs for drug control, in addition to the use of dichlorvos octylthion emulsion can use pollution-free agents; (2) 20% insecticide urea No. 1 1: 6000 times; (3) BT emulsion 1: 800 times; (4) 1.2% smoked ginseng alkali emulsion 1: 1000 times.
3. Yellow thorn moth (also known as Bazi, Yang Spicy) (Lepidoptera)
Hazard situation: More than 120 kinds of trees and flowers are endangered, such as poplar, willow, elm, locust, cherry blossom, plum, begonia, moon season, yellow thorn rose, purple weed, clove, peony, fuso, plane tree, etc.
Life habits: One generation a year, the old mature larvae pupate in a cocoon of branches, coarse skin, brown, white stripes similar to finches and eggs. In May of the following year, the adults lay eggs on the leaf back, the larvae gathered leaf hazards in June and July, dispersed and encroached in August, and overwintered in the branches in September.
Integrated control methods: (1) pruning the insect cocoons on the branches to reduce the source of insects; (2) pruning the cluster leaf larvae before the third instar and eliminating them; (3) in severe cases, it can be killed by smoking ginseng emulsion 1000 times or BT emulsion 400-600 times, and 1.8% avermectin emulsion 3000 times.
4. Brown thorn moth (also known as "Bazi") Lepidoptera
Life habits: One generation a year, with old mature larvae into the soil as cocoons for pupae for winter. Others are the same as the yellow thorn moth.
5. Lepidoptera (caterpillar)
Hazard situation: mainly harm poplar, weeping willow, woolly poplar, dry willow, steamed willow, severe when the leaves are eaten.
Life habits: Two generations a year, every September with 2 instar larvae in the tree crevices as a cocoon for the winter. In April of the following year, the larvae appeared in the cocoon, pupated in mid-June, and the adults feathered and laid eggs at the end of June, and the first generation was in July and the second generation in mid-September. The larvae hide under the bark of the trunk during the day and come out later in the evening to feed.
Integrated control methods: (1) apply 20 times 80% of the dichlorvos to the trunk to kill the larvae under the tree; (2) drug control: 1.2% smoked ginseng alkali emulsion can be sprayed in the evening 1:1000 times, or BT emulsion 1:800 times.
6. Elm poison moth (Lepidoptera)
Hazards: Mainly harmful to elms, peaches, Begonias and other flowers and trees.
Life habits: two generations a year, with larvae wintering in the bark slits. Larval activity is harmful from April to May of the following year, pupate feathers into adults in mid-June, the first generation of larvae can be seen in late June, pupate feathering in July and August, and the second generation of larvae appear in September and October and begin to be cocooned for winter. It is often mixed with elm green flower insect and can be treated at the same time.
7. Canopy caterpillars (Lepidoptera) (also known as Thimbleworms)
Hazards: mainly harmful to mountain peach, poplar, willow, elm, pear, begonia, elm plum, purple leaf plum, peach, yellow thorn rose, boxwood and so on.
Life habits: One generation a year, eggs are used for the winter, and the egg blocks are thimble-shaped and produced on the twigs. In April of the following year, hatching larvae gather in groups of silk weaving nets at the branches, and eclipse day and night. In May, the larvae weave cocoons in the net to pupate, and after 15 days, the adults at the feathering site lay eggs for the winter.
Comprehensive control methods: (1) combined with winter pruning to remove the branches to be egged; (2) drug control: BT emulsion 400-600 times or 1.2% smoked ginseng alkali emulsion 1000 times spraying (can be sprayed in the evening).
8. Cotton curly leaf borer (Lepidoptera)
Hazards: endanger hibiscus, marshmallow, okra, boxwood begonia, mallow, etc. The leaves are often rolled into a barrel to eat the harm, the grass leaf food has obvious lack of carving, the rhizome feeding causes yellowing from top to bottom, hidden in the surface grass roots during the day, and eaten at night.
Life habits: 3-4 generations a year, with larvae in the weeds and under the leaves, the following spring pupate 4-5 months adult feathering spawning, egg period of 4 days. The larvae are infested from May to October, and can be seen in various insect states in August, and the generation overlap is severe in November under the tree for winter.
Integrated control methods: (1) weed removal; (2) artificial removal, leaf curling with insects, eliminating larvae; (3) spraying urea no. 1: 8000 before 3 instars, spraying BT400 or 1.2% smoked ginseng emulsion oil 1000 times after 3 instars.
9. Silver-striped noctuid moth (Lepidoptera)
Hazards: endanger chrysanthemums, bunches of red, dahlias, all kinds of lawns, cannabis, tang calamus.
Life habits: 3 generations a year, to pupate in the dead leaves and soil for winter. The damage period is from May to October and November.
10. Light sword night moth
Hazard situation: endangering lawn grass.
Life habits: 4-5 generations occur in a year, the larvae lie diurnal and nocturnal, and the larvae overwinter in the soil. First generation larvae may be harmful.
Comprehensive control method: Spray BT emulsion 500 times liquid in early June, 6000-8000 times liquid to kill juvenile urea No. 1.
11. Grass borer
Hazard situation: endanger all kinds of grasses, flowers and lawns.
Life habits: 3-4 generations a year with the same as above.
12. Armyworm
Hazard situation: the harm to the lawn in our city is serious.
Living habits: Ditto, the worm can no longer overwinter in the city, the adult insects have strong flight power, move from a different place to lay eggs on the lawn, and the larvae are endangered in June.
Integrated control methods: (1) eradication of weeds and dry grass layers; (2) spraying BT emulsion 500 times liquid or 1.2% smoked ginseng alkali 1000 times liquid, larvae spraying urea 1 7000 times.
13. Bridgeworm (Lepidoptera)
Hazards: Harmful to mallows, roses, moonflowers, hibiscus, begonias, larvae leaf-eating and young stems.
Life habits: 3-4 generations a year, pupae in the soil for winter, the harm period is 6-9 months, early October old mature insect larvae into the soil for winter.
Drug control: 50% octinophos 1000 times, BT200-300 times, Cypercus 500-1000 times, 10% Uranus emulsion 6000 times, urea 3 10000 times, 20% exole emulsion 1500 times.
14. Finches moth (Lepidoptera)
Hazards: Begonias, acacias, ash, hydrangeas, locusts, saponaria, elm trees.
Living habits: Generations overwinter in the soil with pupae, feathering in early June and severely harmful in July and August, and old mature insect larvae enter the soil in September to pupate in cocoons.
15. Short-fronted negative locust (Orthoptera) (pointed grasshopper)
Hazards: Endanger roses, gardenias, bergamots, hibiscus, hibiscus, various grasses and flowers, lawns and ground cover plants.
Life habits: two generations a year to eggs in the soil winter, May to June for the peak of egg spawning. The severe period of harm is from July to August, and in September, eggs are laid in the soil mounds on both sides of the irrigation canal.
Pharmaceutical control: In addition to the use of dichlorvos, 1.2-2 kg of dire horse powder can be used, and 15 ml of 20% rapid killing butadiene emulsion can also be used, and 400 kg of water spray can be added.
16. Scarab beetle (Coleoptera) (Buzzing)
Hazards: Adults endanger the young leaves and shoots of various saplings and flower seedlings, and the larvae like to eat the roots of various trees, flowers and lawns.
Life Habits: Generation by year, with larvae in the soil for winter. From June to July of the following year, the pupae feathers into adult worms, lurking in the soil during the day, the leaf tips are active to feed, and the tails are spawned in the field. Larvae (grub wax) are subterranean pests. Adults are pseudo-dead and phototropic.
Integrated control methods: (1) 3-6 g/m² ;(2) with 5% granular octyl thiophosphorus cave application or 8% green Wei lei 200-300 times liquid to kill adult insects; (3) use slurry soil burial method to kill larvae.
17. Bulbophyllum (Coleoptera)
Hazard situation: endanger all kinds of poplar trees, willow trees. Bite off leaves, stalks, like to eat young shoots.
Life habits: generation by year, overwintering in the soil with eggs, hatching larvae in May of the following year to unearth hazards, larvae eat the root system of the soil surface. Adults feed on young leaves and shoots. From June to July, the damage is serious, and in August the adults lay eggs in the soil for the winter. Adults are pseudo-dead and phototropic.
Integrated control methods: Can refer to the control method of aeruginosa scarab beetle.
18. Yang Yejia
Hazard situation: Poplar trees are mainly harmful to willow trees.
Public welfare plant protection