CATDOLL : CATDOLL: From which month to which month does silkworm rearing take place?

1. Which month is it best to raise silkworms?

Raising silkworms on mulberry leaves is a good time to do so in June. In June, mulberry leaves are lush, nutritious and easy to feed, so there is enough food for the silkworms. The temperature is also suitable, the silkworms grow fast and the production cycle is short, so it is a good time to raise silkworms.

2. Which month is it best to raise silkworms?

Silkworms are divided into spring silkworms and autumn silkworms. The main feed for silkworms is mulberry leaves. Silkworms should be raised after the mulberry trees sprout and the mulberry leaves grow round and have a certain yield. I am from the north, and here we can raise silkworms from April to September or October.

3. In which month do silkworms come out?

Silkworms are usually born in April. But now we have greenhouses, which are very good at controlling the temperature, so they can be born all year round. The temperature of 26℃-28℃ and the humidity of 0.5℃ are the most suitable for their birth. When they are just born, their bodies are black. When they grow big enough, they shed a layer of skin and turn white.

The growth and development of silkworms are related to temperature, humidity, food, etc. Generally, the accelerator period is 10 to 11 days. The larval stage is about 25 days (specifically, the first instar is 4 to 5 days; the second instar is 3 to 4 days; the third instar is 4 days; the fourth instar is 6 days; the fifth instar is 7 to 9 days.) The pupal stage is 14 to 18 days. The moth stage is 3 to 5 days.

4. What is the season for raising silkworms?

Generally speaking, as long as there are mulberry leaves, silkworms can be raised. In Jiangsu and Zhejiang regions of my country, silkworms can be raised in spring, summer and autumn except winter. In the silkworm areas of Jiangsu and Zhejiang, silkworms can be raised within 8 months from April when mulberry trees sprout and open leaves to November when mulberry leaves turn yellow and fall off.

5. When should we start raising spring silkworms?

Generally speaking, it is more suitable to raise silkworms in spring and summer, which is roughly between April and July. The best time to raise silkworms is roughly the same as the growth cycle of mulberry trees, because only at this time can an adequate supply of mulberry leaves be guaranteed and the silkworms can grow healthily.

The advantage of raising silkworms in spring is that the weather is mild, the quality of mulberry leaves is better, and the silkworms are of higher quality and higher yield. The time for raising spring silkworms should not be too late, around April, otherwise the number of silkworms will be greatly reduced if bad weather is encountered later.

6. When do silkworms make cocoons?

Silkworms can be roughly divided into three types: spring silkworms, summer silkworms, and autumn silkworms. Spring silkworms make cocoons in April, summer silkworms make cocoons around July, and autumn silkworms make cocoons around October. After the silkworms have finished making cocoons, they will molt and pupate inside the cocoons. They will break out of the cocoons after 12-15 days, mate and lay eggs, and die naturally after a week.

The cocooning process of silkworms can be divided into four steps:

The mature silkworms first spin out silk, which is attached to the cocooning device, and then spin silk to connect the surrounding cocooning branches to form a cocooning support, that is, a cocooning net. The cocooning net does not have a cocoon shape, but is just some soft and messy cocoon silk layers to serve as a cocooning support.

After the silkworms have woven a cocoon net, they continue to spin out messy silk circles to thicken the inner layer of the cocoon net, and then spin silk in an S-shaped pattern, beginning to form the outline of the cocoon, which is called the cocoon coat. The silk fibers of the cocoon coat are thin and brittle, arranged very irregularly, and contain a lot of sericin.

After the cocoon is formed, the cocoon cavity gradually becomes smaller, and the front and back ends of the silkworm body bend toward the back to form a "C" shape. The silkworm continues to spit out cocoon silk, and the silk-spinning pattern changes from S-shape to ∞-shape, which starts the process of cocooning.

When the silkworm's body is greatly reduced due to spinning a large amount of silk, the swinging speed of the head and thorax slows down, forming a loose and soft cocoon silk layer.

7. Which month is it best to raise silkworms?

March-June.

The most suitable time for raising silkworms is generally March in spring and May and June in summer.

March is the time when mulberry leaves sprout and grow leaves. Spring silkworms at this time have tender mulberry leaves to eat. With sufficient mulberry leaves to feed on, the silkworms grow bigger and fatter.

8. When is the best time to raise silkworms?

Generally speaking, it is more suitable to raise silkworms in spring and summer, which is roughly between April and July. The best time to raise silkworms is roughly the same as the growth cycle of mulberry trees, because only at this time can an adequate supply of mulberry leaves be guaranteed and the silkworms can grow healthily.

The advantages of raising silkworms in spring are that the weather is mild and the quality of mulberry leaves is better, so the silkworms are of higher quality and yield. The time for raising spring silkworms cannot be too late, and it can be done around April. Otherwise, if the weather is bad later, the number of silkworms will be greatly reduced.