CATDOLL : CATDOLL: When and how long does it take to raise silkworms?

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. In which month do we usually start raising silkworms?

Spring silkworms are generally raised from April to June each year, summer silkworms are generally raised from June to July each year, early autumn silkworms are generally raised from July to August each year, mid-autumn silkworms are generally raised from August to September each year, and late autumn silkworms are generally raised from September to October each year.

3. Which month do we start raising silkworms?

Around April.

Generally speaking, silkworm breeding starts around April each year, specifically in spring and summer. Since the main food source for silkworms is mulberry leaves, the breeding of silkworms needs to be basically consistent with the growth cycle of mulberry trees, so as to ensure that there are enough fresh mulberry leaves for the silkworms to eat.

In the sericulture areas of Jiangsu and Zhejiang, silkworms can theoretically be raised during the eight months from April to November each year, but generally only 3-5 times.

4. When can we raise silkworms?

Silkworms can be raised in this month in my country: The frost-free period in North my country is short, and silkworms can be raised 2 to 3 times from May to September; silkworms can be raised 4 to 5 times from April to October in the sericulture area of ​​the Yangtze River Basin; mulberry trees grow from March to November in the Pearl River Basin, and silkworms can be raised 7 to 8 times a year; it is necessary to accurately estimate the mulberry leaf yield in each period, determine the number of silkworms to be raised based on the mulberry leaf yield forecast and the unit mulberry consumption of different silkworm varieties, and calculate the amount of silkworm seeds based on 750 to 800 kg of leaves per silkworm seed in spring, 500 to 600 kg in summer, and 700 kg in autumn.

5. What is the best season for raising silkworms?

1. Silkworms are usually raised in spring and summer, which is roughly the same as the growth cycle of mulberry trees, to ensure sufficient supply of mulberry leaves. Prepare food: Mulberry leaves must be washed with clean water and dried before feeding. Do not feed silkworms with yellow and rotten leaves, otherwise the silkworms will be poisoned or have diarrhea. In order to prevent the excess leaves from wilting quickly, put them in a plastic bag, tie the bag tightly, and place it in a cool place.

2. Feed the silkworms with leaves 4 times a day, early in the morning, at noon, in the afternoon, and at night. The amount should be appropriate each time to avoid waste. You can put more leaves at night because the silkworms eat mulberry leaves all night. Ant silkworms should be fed with young leaves, and the leaves are best cut into pieces or strips.

3. Clean up the feces and leftover leaves frequently: When changing leaves for the silkworms, you can directly cover the old leaves with new leaves, and remove the old leaves after the silkworms have crawled onto the new leaves. This can reduce the casualties of the silkworms and facilitate the removal of leftover leaves and silkworm feces.

4. Do not spray pesticides in the silkworm room as this will harm the silkworms.

6. When should silkworms be raised?

The silkworm breeding period is generally from April to November, that is, from the time when mulberry leaves sprout and open to the time when mulberry leaves turn yellow and fall off. It takes about 40-50 days for silkworms to transform from eggs into moths, which is related to factors such as temperature, humidity, and feeding in the growing environment.

7. What is the best time to breed silkworms?

It is best to start growing the mulberry trees after May 1st, because the leaves are already very large at that time and picking them will not affect the growth of the trees. However, you should still grow less at first and gradually grow more.

1. Living habits: Silkworms are metamorphosis insects, the most common of which is the mulberry silkworm, also known as the domestic silkworm, one of the economic insects that feeds on mulberry leaves and spins silk and makes cocoons. The mulberry silkworm originated in China, and its development temperature is 7-40℃, and the suitable temperature for breeding is 20-30℃. Silkworms feed on mulberry leaves, and their bodies turn white after eating mulberry leaves continuously. After a period of time, they begin to shed their skins. The molting lasts for about a day, and they do not eat or move like sleeping. This is called "hibernation". After molting once, it is a second-instar larva. It grows one year older every time it molts. The larvae molt four times in total, becoming fifth-instar larvae, and then eat mulberry leaves for 8 days to become mature silkworms, and begin to spin silk and make cocoons.

2. Distinguish between male and female:

Some characteristics of silkworm eggs, larvae (silkworm babies), pupae, and moths can be used to identify the sex of silkworms. However, the most widely used method is to identify the sex of old silkworms, pupae, and moths.

The most reliable feature for identifying the sex of silkworms is the eighth and ninth abdominal segments: there are four transparent spots on the ventral surface of the eighth and ninth segments of female silkworms; there is a transparent spot in the center of the ventral surface of the ninth segment of male silkworms.

The characteristics of male and female pupae are also used to identify the structure of the eighth and ninth abdominal segments. In the middle of the ventral surface of the eighth and ninth abdominal segments of the female pupa, there is a straight line that separates the eighth and ninth abdominal segments; while in the middle of the ventral surface of the ninth abdominal segment of the male pupa, there is a pair of small protrusions and an x-shaped symbol.

As for distinguishing male and female moths, in addition to identifying features such as antennae and abdomen size, the most reliable way to identify male and female moths is by their external genitalia. For example, the female moth has a black bone plate near its mating hole, and the male moth has a pair of claspers.

8. Which season is suitable for raising silkworms?

Spring or Summer

Answer 1. Silkworm rearing time: Generally, silkworm rearing takes place in spring and summer (starting around April). Silkworms mainly feed on mulberry leaves, so silkworm rearing needs to be basically consistent with the growth cycle of mulberry trees, so that there are enough mulberry leaves for silkworms to eat. 2. Silkworm rearing frequency: In Jiangsu and Zhejiang silkworm regions, silkworm rearing can be carried out theoretically from April to November each year, but generally only 3-5 times.