How many silkworms can there be a year? 10

In the silkworm area of the Yangtze River Basin, from late April to mid and late October, silkworms are raised 4 or 5 times a year. In the silkworm area of the Pearl River Basin, from March to November, silkworms can be raised 7 or 8 times a year. In North China, from May to September, silkworms are raised 2 3 times a year.

The development temperature of silkworms is 7 40, and the appropriate temperature for feeding is 20 30. Silkworm babies live on mulberry leaves, and after eating mulberry leaves, their bodies turn white, and after a while, they begin to peel. When the skin is peeled, you don't eat or move for about a day, which is called "dormancy".

After a peel, it is a second-instar larvae. Even if it sheds its skin once and increases its age by one year, the larvae have to shed their skin four times to become a fifth-instar larva, and then eat mulberry leaves for 8 days to become a mature silkworm and begin to spin silk and form cocoons.

The life of the silkworm passes through the silkworm egg, ant silkworm, mature silkworm, silkworm cocoon, silkworm moth, a total of more than 50 days. Silkworm (scientific name: bombyxmori) is a lepidopteran insect, the main raw material of silk**, which occupies an important position in human economic life and cultural history.

Native to China, South China and Taiwan, commonly known as silkworm babies or mothers.

The silkworm is called "silkworm" (meaning "silkworm") because it uses silk to weave cocoons. The cocoon is woven from a single piece of silk 300-900 meters long. Nowadays, China's cocoon silk production and export volume account for more than 70% of the world's total, and has become a major cocoon silk country that can dominate the world's cocoon silk trend.

Summary. Hello, in the natural environment, silkworms can be raised twice a year, but in the artificial breeding environment, the number of breeding will increase, the number of silkworms in different regions is also different, the Yangtze River basin area from late April to mid and late October, silkworms can be raised 4-5 times a year; In North China, from May to September, silkworms are raised 2 3 times a year. In the Pearl River Basin, from March to November every year, silkworms can be raised 7-8 times a year.

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Hello, in the natural environment, silkworms can be raised twice a year, but in the artificial breeding environment, the number of breeding will increase, the number of silkworms in different regions is also different, the Yangtze River basin area from late April to mid and late October, silkworms can be raised 4-5 times a year; In North China, from May to September, silkworms are raised 2 3 times a year. In the Pearl River Basin, from March to November every year, silkworms can be raised 7-8 times a year.

In the natural environment, silkworms can be raised twice a year, but in the artificial breeding environment, the number of breeding will increase.

The number of sericulture in different regions is also different, and the Yangtze River basin can raise sericulture 4-5 times a year from late April to mid and late October; In North China, from May to September, silkworms are raised 2 3 times a year. From March to November every year, silkworms can be raised 7-8 times a year.

The life of the silkworm passes through the silkworm egg, ant silkworm, mature silkworm, silkworm cocoon, silkworm moth, a total of more than 50 days.

The silkworm babies that have just hatched from the eggs are black and black like ants, called "ant silkworms", and their bodies are covered with fine hairs, and the hairs are not obvious after about two days. The silkworms have an appetite about 40 minutes after hatching, and the feeding process begins at this time.

The ordinary one is twice a year, but south of the Yangtze River, with good climatic conditions and good artificial technology, it can be raised 12 times a year.