Light the alcohol lamp, put the beaker on the asbestos net, add a little baking soda, and stir with wooden chopsticks for a while; Stir with a kitchen broom to find the head of silk, then wind the silk head on the paper tube and rotate the paper tube to draw silk.
Silkworm is a kind of abnormal insect, and the most common one is silkworm, also known as silkworm, which is one of the economic insects that spin cocoons on mulberry leaves. Silkworm originated in China, and its development temperature is 7 ~ 40℃, and the suitable feeding temperature is 20 ~ 30℃.
Silkworm babies live on mulberry leaves. After eating mulberry leaves constantly, their bodies turn white, and after a period of time, they begin to peel. When peeling, they don't eat or move like sleep for about a day, which is called "dormancy".
After peeling once, it is the second instar larva. Even if it is peeled once, it will increase by one year, and the larva will be peeled four times to become the fifth instar larva. After eating mulberry leaves for 8 days, it will become a mature silkworm and start spinning and cocooning.
The English name of silkworm is "silkworm" (meaning "filariasis") because it weaves cocoons with silk. Cocoon is made of a silk 300-900 meters long. Nowadays, China's cocoon and silk production and export both account for more than 70% of the world total, and it has become a cocoon and silk power that can dominate the world cocoon and silk price trend.
Silkworm is a kind of abnormal insect, and the most common one is silkworm, also known as silkworm, which is one of the economic insects that spin cocoons on mulberry leaves. Silkworm originated in China, and its development temperature is 7 ~ 40℃, and the suitable feeding temperature is 20 ~ 30℃.
Silkworm babies live on mulberry leaves. After eating mulberry leaves constantly, their bodies turn white, and after a period of time, they begin to peel. When peeling, they don't eat or move like sleep for about a day, which is called "dormancy".
After peeling once, it is the second instar larva. Even if it is peeled once, it will increase by one year, and the larva will be peeled four times to become the fifth instar larva. After eating mulberry leaves for 8 days, it will become a mature silkworm and start spinning and cocooning.