How is the armyworm formed? How to cure armyworm?

It is transformed from a snail and grows for 2-6 generations per year. Hermaphroditism.

Allogeneic fertilization or homogeneous fertilization reproduces, laying more than 400 eggs, eggs are laid in moist soil, the egg stage is 10-17 days, and the larval stage is 55 days. In spring and autumn, the damage is serious. From April to June, the Yangtze River basin was the most affected.

From May to July, the most serious damage is done. Wild slugs are nocturnal, latent during the day, and can withstand hunger for more than 130 days. Terrestrial.

The body is soft, shaped like a shelled snail, and has an irregular cylindrical shape. The shell degenerates into a calcareous sheet located on the front and back of the body, which is encased in a mantle to form an inner shell. There is a caudal crest.

The body is gray, yellowish-brown, or orange with inconspicuous dark bands and spots. Antennae 2 pairs. The eye is located at the apex of the posterior antennae.

The female and male reproductive pores are a common foramen and are located on the right side of the body, posterior and inferior to the anterior right antennae. The foramen opening is at the posterior edge of the mantle. The body often secretes mucus, leaving silvery-white marks after crawling.

Lives in dark, damp places, lurking during the day, and going out at night and in the rain. Hermaphroditic, mating and laying eggs, the eggs are laid in moist soil. It feeds on the young leaves and shoots of plants, and is the enemy of vegetables, fruit trees, tobacco, cotton, etc.

A common species in China is the yellow slug. Large, with a body length of up to 120 mm when extended. The body is yellowish-brown or dark orange with light yellow spots.

Living in a dark, damp place or in the shade of a dwelling. It is most active during the season of high humidity and high temperature. Likes to eat plants, is a pest of agriculture.

Abroad spends an average of $30 million a year to eradicate them.

Armyworms, generally referred to as snails, are mollusks with degenerated shells in the class Gastropoda.

StickyArmywormsIt can be pinched to death by hand, handled during larvae, etc. The details are as follows:

1. Artificial control of larvae: In the case of a small amount of insects every year, you can use your hand to pinch the heart leaves to kill the larvae inside.

2. Physically trap and kill adults, use the habit of adults to lay eggs on the leaves of cereal crops, replace new grass, and burn the replaced grass in a concentrated manner.

3. It can biotrap and kill adult insects. Use a bait with a ratio of the smell that adults like, with a small amount of insecticide.

Perform biobooups.

Migration characteristics of armyworms

Armyworms are migratory pests, and their overwintering demarcation line.

In the area of 33°N, no insect can overwinter in the area north of 33°N. In Jiangxi and Zhejiang, larvae and pupa are used in rice piles and ridges.

Weeds, green manure.

Fields and wheat fields are overwintered under the topsoil. It breeds all year round in Guangdong and southern Fujian, and there is no overwintering phenomenon. In the spring, a large number of adult lines appear in the north and migrate from the south.

Armyworm has four large-scale migration activities in the eastern half of China every year, and there are two migration modes. Migration from low to high latitudes, or from low to high altitudes, in spring and summer; When migrating back in autumn, they migrate from high latitudes to low latitudes, or from high altitudes to low altitudes.

The above information refers to Encyclopedia - Armyworm.

Armyworm is a type of insect belonging to the order Lepidoptera, the family Noctuidae. It is hosted by wheat, rice, millet, corn and other cereal grain crops and more than 104 species of plants in 16 families such as cotton, beans and vegetables. The larvae eat leaves, and when they occur, they can eat all the leaves of crops, causing serious losses.

Because of its swarming, migratory, omnivorous and gluttonous nature, it has become an important agricultural pest in the country.

The number of generations of armyworm per year varies from region to region, with 2 3 generations in Northeast China and Inner Mongolia, 3 4 generations in the central and southern parts of North China, 4 5 generations in the Huaihe River Basin of Jiangsu, 5 6 generations in the Yangtze River Basin, and 6 8 generations in South China. The plateau at an altitude of about 1000 m occurs in 3 generations in 1 year, and the altitude of about 2000 m occurs in 2 generations.

1. Armyworms are generally born from eggs parasitic on vegetables and vegetables.

2. Armyworms inhabit damp places, mostly seen on damp walls and branches, and often parasitize on strawberries, cabbage, cauliflower, cabbage, ladybugs, spinach, lettuce, kraft, eggplant, tomato, watercress, broccoli, purple cabbage, lilies, beans and other crops and weeds. Salt worms, also known as water worms, commonly known as slugs or armyworms, are mollusks with degenerated shells in the class Gastropoda.

Armyworm is transformed from a snail, it can give birth to 2-6 generations a year and is hermaphroditic, belongs to allogeneic fertilization or homogeneous fertilization reproduction, the number of eggs is about 400 grains, the egg pile is generally laid in the moist soil, the egg period is 10-17 days.

Snails refer to all terrestrial species of gastropods, and generally Western languages do not distinguish between aquatic snails and terrestrial snails, but in Chinese snails only refer to terrestrial oak species, and snails in a broad sense also include giant shield slugs.

Armyworm, also known as shaving insects, marching insects, commonly known as colorful insects, wheat silkworms, is a kind of heteropolyphagous, migratory, intermittent outbreak pests mainly in wheat, corn, sorghum, rice and other food crops and pastures. It can damage more than 104 species of plants in 16 families, especially gramineous plants. Except for the northwest part of the country, it is distributed in other places.

Armyworm outbreaks can eat up crop leaves, seriously damaging crop growth.

The body color of the adult armyworm is pale yellow or light grayish-brown, the body length is 17 to 20 mm, the wingspan is 35 to 45 mm, the antennae are filamentous macroprelipop, there are 2 pale yellow round spots near the anterior margin of the forewings, the outer annular round spot is larger, the front of the hind wings is dark brown, the reverse side is light brown, the margin hair is white, there is a dark stripe obliquely from the tip of the wing to the posterior, there is a small white spot at the lower corner of the middle chamber, and there is a small black spot on each side of the white spot. The male moth is smaller, darker in color, and its tail end can be squeezed to extend a pair of gill cover-shaped grips, and the tip of the grip has a long spine, which is a reliable feature that distinguishes it from other similar species. Female moths have 1 pointed ovipositor at the end of their abdomen.

Explanation of armyworm [army worm; grass worm]

Insect, adult forewing** with two pale yellow circular markings, hind wing tips and margins black-gray, diurnal and nocturnal. The larvae have brown heads with yellowish-black longitudinal lines on their dorsal and bilateral sides. Pupae reddish-brown.

It is the main pest of rice, wheat, sorghum, corn, etc. In some areas, it is called marching insects, shaving insects, detailed explanations, also called marching insects, shaving insects, night thief insects, five-colored insects, etc. It is the main pest of rice, wheat, sorghum, corn, etc.

Word decomposition Sticky explanation Sticky socks talk about rock ā things are attached to each other and are connected together: sugar sticky teeth. Glue one thing to another with glue or paste:

Stickup. Conglutination. Bonding.

radical : m; Explanation of insects worm (insect attendant) ó arthropod A class of arthropods: Kun sue the insect.

Beneficial insects. Carving insect skills (metaphor for insignificant skills). Common name for animal:

Big bug (tiger). Long worms (snakes). Insects (insects with shells).

Radical: Worm.