Sericulture? What is this? In this article, you can find the meaning of sericulture is the cultivation of silkworm.
The meaning of sericulture is the cultivation of silkworm.
For the production of silk yarn, the silkworm is considered as silk farming. It is one of the branches of Applied Zoology. The English word of silk farming is a derivative of the word sericulture – the culture of Sericin or sericin, which is a kind of protein. This sericin is the main synthetic substance of silk. That is, the preparation of the substance called sericin, which is cultivated by him, is the cultivation of sericulture or silk.
About 2000 years ago, China’s first silk yarn was discovered in China. After that, for almost two to two and a half thousand years, the Chinese were exclusively secretly producing silk yarn and silk cloth. About five hundred years after Christ’s birth, two European monks learned the technique of silk production by stealing. And in Europe, some silk worms began to cultivate silk by bringing eggs and mulberry seeds. Many countries of the world today cultivate fine silk yarn and silkworms.
A type of insect of Bombyx mass of the Arthropod episode of the animal kingdom. At the end of the pigmentation stage of this insect, the salivary gland of their body becomes exposed to a special type of fumes when exposed to the air. Turn this fiber into a special process. This is why silk-producing insects or insects are called ‘silkworm’.
These insects are commercially cultivated to produce silk yarn. Mulberry is usually used for the maintenance of this insect. Basically, the leaves of the mulberry leaves grow bigger and make cocoons. Rashpokara is cultivated in those high places where mulberry trees can grow. Typically, 210-290 temperature and 90% moisture are most suitable for silk farming. Chapainawabganj district has the highest silk culture for weather and fertile soil. Besides, silk insects were cultivated in Natore, Rajshahi, Bogra, Pabna, Mymensingh, Tangail, Rangpur, Dinajpur, and Sylhet.
Mulberry is cultivated primarily for the cultivation of silk. Because the silkworms live on the leaves of mulberry trees. Silk beetles are cultivated on three species of white mulberry, black mulberry, and red mulberry. But white mulberry trees are the most preferred of silk pests. Mulberry leaves once it leaves for 20-25 years. Cut to different heights, mulberry trees can be cultivated as ‘jhupi’, ‘jhark’ and ‘tree’.
SILKWORM LIFE CYCLE
Silk insects divided into four stages. The four stages are an egg, larva, pupa, and full-fledged insects. The full-blown insect is naturally moth.
Silkworm nocturnal Their skin color is also dull. Woman’s moth lays around 400- 500 eggs while running above the plant leaves. Woman moth dies after laying eggs for about 24 hours and after laying eggs. Egg color pale yellow On 8-9 days, black spots on the eggs of the egg fall. About 10 days, the whole egg becomes black. Then on 11-12 days, the eggs start to swim. The pool is called in the early stages of the pigment.
In the initial stage, they have a colorful brownish brown white color. They are very hungry. They grow large amounts of Mulberry leaves. At this time they eat mulberry leaves 11-13 times a day. After that, 18 to 24 hours have become dull. Then they changed the body’s shell and started eating mulberry leaves again. Thus they changed four times to the bottom. The entire pigment is about two inches tall and divides into three parts (head, bust, and belly). They have three pairs of axes and five pairs of arms. There are ten pairs of breathing through the body side. After changing for the fourth time, they stopped eating and started to become mung bean.
There is a long silk gland inside the body of a full plaque. There is a type of juice in the book. The juice comes out of the mouth with the tube. The name of the tract is Spinneret. The juice in contact with the air becomes hard. They make a cover around 65 times in the minute by rotating the face.
Gradually this cover becomes solid. This cover is called cocoon. This change in silk pistachios is called metamorphosis. This time their body size is reduced. After having been in the idiom for about 10 days, a kind of juice was released from the body. This juice melts an edge of the shell. Then they came out of the crib and came out. At this time, the silk beetle gets its full math status in his biography. In the moth state, silk insects are divided into body heads, chest, and lower abdomen. There is a pair of pancakes and a pair of antenna on the head. There are four (2 + 2) legs on both sides of the chest area.
The male moths first came out before the male moths. In full-time, females and mammals take part in sexual intercourse. Then the male path died. And the female moth dies after laying eggs
Silk yarn collection from silk
After the stigma was finished, the silkworm stopped eating it, and the body covered the body with the saliva and turned into an egg-shaped egg. Silk farmers kill this poultice in a hot water and silkworm kills. At the same time, contact with hot water becomes loose by the soft. At this time, the farmers brought an edge of silk yarn with care. On this end, long threads were pulled out by dragging slowly. This thread is called silk yarn.
History of silk cotton
Silom yarn is first discovered in China. The earliest specimens of this are found in about 3500 BC. It is said – in the 27th century BC, an empress named Leizu was drinking tea with the slaves in the garden, while silk came in her tea container, one of her girl’s slogan tried to take the cottage from the bowl quickly. During this time, he noticed that there was a kind of fine yarn coming out of the coconut. Samrajni deeply reviewed the matter and decided that it is possible to have high-quality cloth weaving from this yarn.
Then on the order of the emperor, the silk was collected and the yarn was made and later the cloth was made from that yarn. At the order of the empress, the girls started making silk clothes in the palace. At that time the palace was a great entertaining thing for silk weaving. Then China kept secret for how silk clothes were made for thousands of years. As a result of the invention of silk, the field of painting is a huge development. An independent section was created in China on the silky cloth. By the order of Byzantine Emperor Justinian, two European clerics secretly learned the technique of silk production. In 550 BC, silk farming started in Europe. In 1200, Italy’s Palermo, Catalunya, and Kommo became the world’s largest silk production city.
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