Popular science | sericulture season and sericulture technology

Silkworm is a lepidopteran insect that feeds on mulberry leaves. It is an invertebrate. The arthropod is a silkworm moth, and the main target of mulberry silkworm is silkworm cocoon and silk . Breeding silkworms is also a hot industry in China. Not only can it be sold, silk can be made into various garments or crafts. So what season is best for raising silkworms? Below, specifically to understand:

Silkworm season

In spring and summer, the growth cycle of mulberry is about the same as to ensure an adequate supply of mulberry leaves.

Silkworm feeding method

1. Feeding method: 4-5 years old silkworm is a large silkworm period, and the suitable temperature for growth is 25 degrees. Silkworms have weak resistance to high temperature and humidity and carbon dioxide, large amount of mulberry, and many excretions. Indoor ground breeding and outdoor use can be adopted. Shelving.

2. After returning the silkworm, the silkworms are protected in a suitable environment to make the embryos develop normally. The specific method is: in the sterile silkworm indoors, the silkworms are laid flat in the silkworm cocoons, and the eggs face up, first - 4 days required room temperature 24 ° C, dry and wet difference 2 - 2.5 ° C, 5 - 10 days required room temperature 27 ° C, dry and wet difference 1.5 - 2 ° C. When the embryo is developed to the later stage and a small number of silkworm eggs are found to be cyan small dots, the silkworm seeds are immediately obscured by black cloth. After about 40 hours, the fourth day before the dawn of 4-5, the dark cloth is removed and the silkworm species are removed. Wrapped in white paper, the egg faces up, the light is sensitized, and the ant silkworm bites the egg shell to hatch.

3. The main technical measures for large silkworm rearing are:

(1) Improve the environment, do a good job of ventilation and boring.

(2) Covering the shade to prevent hot air from entering the silkworm chamber.

(3) The silkworm seat is placed in a low-level, low-level, and thin feeding.

(4) Grasp the management of mulberry gardens, ensure the quantity and quality of mulberry leaves at the age of 5, so that the silkworms can eat and eat well, and prevent the silkworms from eating old hard leaves, over young leaves, malnourished leaves and water-deficient leaves.

Sericulture needs attention to details

1. Remove sand before sleeping. This is to avoid excessive accumulation of silkworm feces, and the bacteria are easy to breed and spread, and then invade the silkworm body during the sleep period.

2, silkworms do not eat during the sleep period, mainly relying on the nutrients absorbed by mulberry before sleep to maintain life activities. So be sure to eat and sleep. If you stop giving it to mulberry too early, it will cause hungry sleep, while the hungry silkworm is weak, resistant, and easy to get sick.

3, silkworms in the sleep period of foreign interference resistance is weak, so we must pay attention to sleep protection. When the silkworm is 95% sleepy, sprinkle with fresh lime powder and silkworm medicine "Prevention No.1" to prevent the invasion of germs. If a small number of silkworms do not eat mulberry and do not sleep, this is because it did not find a place to sleep. At this time, you should put some mulberry leaves and make a decision to sleep.

4, silkworms are temperature-changing animals, the adaptation range is 20 ~ 30 °C. In the spring silkworm period, the climate is often cold and humid, and the focus is on warming and dehumidification. During the summer silkworm period, the temperature is high and humid, and the focus is on cooling and dehumidification, keeping the airflow of the silkworm chamber and removing sultry heat. If the autumn silkworm period is hot and dry, it should be moisturized indoors, combined with disinfection, that is, spray the ground and the wall with fresh lime powder and bleaching powder; or wet the cloth on the silkworm frame to keep the silkworm chamber moist. Avoid the difficulty of molting and semi-skin in silkworms.