Who can introduce silkworms?

Silkworm variety

silkworm

Also known as silkworm, it is one of the economic insects that feed on mulberry leaves and spin cocoons. It belongs to LEPIDOPTERA and Bombyx mori. Silkworm originated in China, its development temperature is 7-40℃, and its rearing temperature is 20-30℃, which is mainly distributed in temperate, subtropical and tropical regions.

Silkworm is an oligophagous insect. It likes to eat not only mulberry leaves, but also dead leaves, elm leaves, duck onions, Bo Gongying and lettuce leaves. Mulberry leaves are the most natural raw materials for silkworm migration. Silkworm is a completely abnormal insect, which has to go through four completely different stages of development: egg, larva, pupa and adult. It takes 22-26 days from hatching to spinning and cocoon formation in larval stage. A silkworm eats about 200-25g of mulberry leaves in its lifetime. Generally, after four times of sleep and molting, its weight increases by about 654.38+0.0000 times when it grows extremely. The consumption of mulberry leaves in the last stage accounts for more than 85% of the total consumption of mulberry leaves. Cocoons can be reeled. Silk is a noble fiber in textile fibers and a raw material for making silks and satins. Silkworm pupae are edible, can be comprehensively utilized with moths and silkworm excrement, and are raw materials for various chemical and pharmaceutical industries.

tussah

Silk-spinning insects that feed on oak leaves. It belongs to LEPIDOPTERA, Bombycidae, and its scientific name is Tussah. Originated in China, the development temperature is 8-30℃, the optimum development temperature is 1 1-25℃, and the optimum temperature is 22-24℃. Mainly distributed in China. It is also distributed in North Korea, South Korea, Russia, Ukraine, India and Japan.

Tussah feeds on leaves of Quercus plants in FAGACEAE, such as Quercus acutissima and Quercus mongolica. You can also eat the leaves of Artemisia, hawthorn, chestnut, maple, pear, apple and other plants. Tussah is a completely metamorphosed insect, which has to go through four stages of development with completely different morphology and physiological functions: egg, larva, pupa and adult. After four times of sleep and molting. Every molting is 1 time, increasing by 1 year. It takes about 50 days for a silkworm to mature and cocoon from hatching to 5th instar. Spring silkworms eat about 30-35g leaves all their lives, and 50-58g leaves in autumn. Among them, the big gnawing leaves account for more than 80% of the total leaf consumption. The weight of spring silkworm is 14g, and that of autumn silkworm is about 21g. When it grows to the extreme, the weight of wild silkworm is about 2000-3000 times higher than that of ant wild silkworm. Tussah cocoon can be reeled, tussah silk is the raw material of tussah silk, tussah pupa is edible, and it is the raw material of chemical industry, medicine and food industry together with silkworm moth. Eggs are good intermediate hosts for biological control of Trichogramma.

castor silkworm

An economic insect that feeds on the leaves of castor silkworm and cocoons. It belongs to LEPIDOPTERA, Bombycidae, and its scientific name is Philosamia Cynthia Ricini Bois Duval. Ricinus communis originated in Assam, northeastern India, and was introduced from India in the18th century. It was introduced and raised in China, the United States, Sri Lanka, Malta, Italy, the Philippines, Egypt, Japan, North Korea and other countries. The first generation of castor silkworm goes through four development stages: egg, larva, pupa and adult. The egg stage is about 10d, the larvae sleep for 20 days, the pupa stage is about 20d, and the first generation is about 45-50d. It is difficult to hatch when the egg period is below 16.5℃ or above 32℃, and the suitable temperature is about 25℃. The suitable temperature for feeding in larval stage is about 24℃. The protection temperature of pupa is about 25℃ and the relative humidity is 75%-90%. Grow to the extreme, weighing about 7g, about 5400 times higher than ant silkworm.

Ricinus communis cocoon can't be reeled, but can be used as raw material to spin Ricinus communis silk. Also, castor blended spun silk is blended with silkworm waste silk, tussah waste silk, ramie and chemical fiber.

Cassava silkworm

When castor silkworm feeds on cassava, it is commonly called cassava silkworm in production. It's actually castor silkworm. 1956 In Cenxi County, Guangxi Province, cassava leaves were successfully used to raise castor silkworm, which was later extended to neighboring counties and is now called cassava silkworm. Guangdong and Fujian have also been raised. Its habits and characteristics are the same as those of castor silkworm.

silkworm

When castor silkworm feeds on mulberry leaves, it is commonly known as silkworm in production. During the period of 1965, the sericulture experimental station of Tu and Miao Autonomous Prefecture in Hunan Province successfully used wild mulberry leaves to raise castor silkworm. Because it's called horse silkworm. Compared with the rearing of castor leaves, the silkworm reared with silkworm develops slowly, and will grow for 2-4 days at the whole age, but the cocoon layer weight is the same, which can reach 0.34-0.42g g. It is also reared in Hunan, Hubei, Guizhou, Sichuan, Guangxi, Gansu, Shaanxi and other provinces. Its habits and characteristics are the same as those of castor silkworm.

Huili silkworm

Namely castor silkworm. It is the transliteration name of castor silkworm. The origin of castor silkworm is Arrom in northeast India, and the local people call it castor? Quot“eri ",Japanese transliteration of" eri "by eri-silkworm is" Huili ". When castor silkworm was introduced to China, it was also called "Huili silkworm". Because it means "Huili silkworm", it is affordable, profitable and easy to popularize. At that time, some people in China translated eri-silkworm into "Erie silkworm" and "Ili silkworm".

Giant silkworm

The leaves of tussah plants in FAGACEAE (such as tussah in Liaodong, tussah in Mongolia, Quercus variabilis, Quercus acutissima, etc.) are one of the economic insects that feed on cocoons. It belongs to LEPIDOPTERA, Bombycidae, and is also a famous silkworm. Its scientific name is Antheraea Yamamaiguren-Meneville, which is mainly distributed in China, North Korea, South Korea and Japan. The wild silkworm is a completely metamorphosed insect, and its egg period is about 270 days. It takes about 50-60 days from hatching to cocoon formation, 7-8 days from cocoon formation to pupation, and 20-30 days from pupation to emergence. The optimum temperature of warm eggs is 65438 08℃, and the relative humidity is 75%-85%. The optimum temperature for eclosion is 22-26℃. To the extreme growth, the weight of 17-20g is about 4000 times higher than that of ant silkworm.

The color of natural cocoon is green, which can be reeled, and the silk is beautiful and soft, which can keep natural green without dyeing and has a unique luster. Woven silk is gorgeous and beautiful, and it is a high-grade silk fabric.

Amber silkworm

An economic insect that spins cocoons and feeds on nanmu leaves, also known as Assam or Jiamu silkworm. Lepidoptera, Bombycidae, the scientific name of wild silkworm. "Hey? Bucket (4)? What happened to vanadium? Thorium decorated with dew? 4-25℃, relative humidity 75%-80%, temperature over 35℃, relative humidity below 65%, larvae are difficult to survive. Amber silkworms can eat the leaves of several plants, mainly nanmu leaves, leaves of evergreen plants such as Rubiaceae and tiger thorns, and leaves of plants such as Michelia and Cinnamomum cassia. It is multi-chemical and can be harvested 4-5 times a year. Generally, it takes 25-35 days from hatching to cocoon formation, 2-3 days for cocoon formation, 3-4 days for spawning, 7-8 days in summer and 14- 15 days in winter.

Cocoons are golden yellow and can be reeled. Silk is tough and has amber luster, so some people call it "amber silkworm", and its fabric is used to make expensive clothes.

Camphor silkworm

An economic insect that cocoons and feeds on camphor leaves. Also known as wild silkworm, maple silkworm, silkworm fishing and so on. It belongs to Lepidoptera, Bombycidae, and its scientific name is eriogyna (Saturn ia) pyretoum Westwood. Cinnamomum camphora mainly feeds on the leaves of Cinnamomum camphora with good silk quality, while other moths feed on maple leaves, willow leaves, wild roses, pears, pomegranates, purple bark trees and leaves of families with poor silk quality. The main areas are China, Viet Nam, Indian and other countries, and the largest output is Hainan Island in China. Silkworm of Cinnamomum camphora produces one generation a year and diapauses in pupa state. The optimum temperature for adult emergence is 16- 17℃. Silkworm Cinnamomum camphora * * * experienced 8 instars, and the total age was about 80 days. At maturity, the weight of female silkworm is 16g, and that of male silkworm is 10g. Silkworm breeders generally don't allow them to cocoon. Instead, when they mature, they first soak the mature silkworms in water, then tear their belly between the second and third abdominal legs with their hands, take out two silk glands and soak them in glacial acetic acid (concentration 2.5%), and then spin them after 5-7 minutes, which can be stretched to about 200cm. It is smooth and transparent after washing, tough and waterproof, and transparent in water. It is the best Diaoyutai. About 1000 tablets can be stretched to 500g, which can be refined into high-quality suture for surgery. Silkworm cocoons of camphor trees can also be reeled, but the quantity is very small. Only China produces camphor silk in the world.

Chestnut silkworm

An economic insect that spins silk and forms cocoons and mainly feeds on walnut leaves and chestnut leaves. It belongs to LEPIDOPTERA, Bombycidae, and its scientific name is Dicty-opoea japonica Moore, which is distributed in China, Japan and other places. Mainly eat leaves such as walnuts, chestnuts, apricots, Pterocarya stenoptera, litchi, Cinnamomum camphora and elm. Cocoons that eat walnut leaves are heavy and thick, and those that eat jackgrass and chestnut leaves are even worse. In Liaoning, Heilongjiang, Jilin, Jiangxi, Guangxi and other provinces, one generation is completed every year and overwinters with eggs. In some wild situations, larvae hatch in late May, sleep for 4 or 5 hours, mature in late June, and mature into cocoons in about 50 days. Cocoons are lantern-shaped, with different mesh sizes. It takes about 2 days to cocoon and pupate after 3-5 days. Cocoons can be reeled and used as raw materials for silk spinning, and the quality of silk is excellent. Chestnut silkworms can also take silk glands out of the belly of mature silkworms, soak them in acid and stretch them into fisherman's silk or medical silk.

castor silkworm

The staple food is Ailanthus altissima (Ailanthus altissima), which is also an economic insect that spins cocoons, such as tallow, castor, holly, Michelia, paulownia, Indus, camphor leaves and so on. It belongs to LEPIDOPTERA, Bombycidae, and its scientific name is Philo samia cyntia Walker et Fdlker. Also known as Toona sinensis and tallow. Distributed in China, Japanese and Indian countries. China is distributed in Shandong, Jiangsu, Zhejiang, Jiangxi, Sichuan and other provinces. There are 1 chemistry, 2 chemistry and even 4 chemistry. Cold region 1, Taiwan Province Province 4. Silkworm stage is 30-40d. Mature silkworms pick 2-3 leaves and spin cocoons. Cocoon is grayish brown, spindle-shaped, with a hole at the top and a slender cocoon handle. Cocoon weight is about 3g, cocoon layer weight is about 0.3g, and cocoon layer rate is 10%- 12%. Soil silk is generally used in rural areas, and the woven silk is called Toona sinensis silk.

Chinese tallow tree

One of the economic insects that spin cocoons belongs to Lepidoptera, Bombycidae, and its scientific name is Attacus a tlas Linnaeus. Also known as Dashan silkworm and Big Sapium sebiferum silkworm. Distributed in China, Indian, Japanese, Vietnamese and other countries. China is mainly produced in Guangdong, Guangxi and Fujian provinces. 2 or 3, overwintering in pupa state. April-165438+ 10 is the feeding season. Eat coral leaves, but also Chinese tallow leaves, maple trees, Hollyleaf and so on. Larvae is 6 or 7 years old, the whole age of spring and summer silkworm is about 35 days, and autumn silkworm is about 40 days. The total cocoon weight is 6.5- 10g, the cocoon layer weight is 0.9- 1. 1g, and the cocoon layer rate is about 10%. Silkworm cocoons can spin spun silk with good tensile strength, and the spun silk is called "water?" Silk.

Willow silkworm

One of the economic insects that spin cocoons belongs to Lepidoptera, Bombycidae, and its scientific name is Actias selene Hubner. Also known as the big green moth silkworm, the middle silkworm. Distributed in China, Japanese and Indian countries. They are all over China. Silkworm 1 has 2-3 generations (rarely 4 generations) and overwinters as pupae. Mainly eat willow, Pterocarya stenoptera, butter, camphor, paulownia and other leaves. Mature cocoon between leaves, large and dark brown, can be reeled more than 300m m m.