Cultivation techniques and methods of silkworm.

It is very important to raise big silkworms well during sericulture. What should be paid attention to in a stage? Then let's take a look at the sericulture techniques and methods I have carefully recommended for you, hoping to help you.

How to raise silkworms.

When the spring silkworm enters the fifth instar, the majority of silkworm farmers should forecast that it will be mainly rainy and rainy in late May with low temperature. Master the following seven key techniques and take effective measures to raise big silkworms.

First, do a good job in disinfection and disease prevention of silkworm houses, mulberry banks, silkworm bodies and silkworm seats during the big silkworm period.

1, with? Prevention of silkworm disease comes first? Or? Silkworm net? Sterilize the silkworm body once; Silkworms fed by silkworm erosion should be desanded once a day and sprinkled with fresh lime powder once; Silkworms and ground silkworms raised on the silkworm platform are sprinkled with fresh lime powder once a day, and the branches should be removed in the middle of the fifth instar to remove silkworm excrement; The silkworm excrement inside and outside the silkworm room should be cleaned up in time and brought back to the mulberry field after fermentation; Use the fifth instar every other day on sunny days, especially the day before sericulture? Kill silkworms and flies? Spray your body once. Generally kill 1 silkworm fly and add 1 kg water.

2. Should farmers whose silkworms are stiff use it? Feed mulberry leaves every morning or evening 1 day. Sucked it away? Smoke and disinfect the space of silkworm room and mulberry storage room once; Generally, in a 9-meter-long silkworm house, 1 package is used when no diseased silkworms are found. Sucked it away? 2 packs of sick silkworms were found; When fumigating and disinfecting, it is required to close the doors and windows for half an hour, then open the doors and windows, and then give mulberries after ventilation.

3. Before giving mulberries every time, check out the dead silkworms and put them in a lime or bleaching powder tank. Wash hands and disinfect before feeding mulberry leaves.

Second, master the temperature of the big silkworm period and do a good job of ventilation in the silkworm room.

The temperature of the fifth instar shall not be lower than 20℃. If the temperature is too low, it is easy to weaken the silkworm body and get sick in the late fifth instar. Therefore, when the temperature is low from night to morning, you can properly close the doors and windows to do a good job of heating. Even if the temperature is low during the day, open the doors and windows to ventilate and raise silkworms to ensure the fresh air in the silkworm room. If the silkworm room is poorly ventilated, you can use an electric fan or an exhaust fan, which is beneficial to the health of silkworms.

Third, big silkworms are kept sparsely and eat well.

From the third day to the fourth day of the fifth instar, the silkworm nest should be expanded to the largest area. Generally 1 silkworm eggs should reach 40-45 silkworm spots, and the area of sericulture and silkworm farm on the ground should reach about 40 square meters. It is advisable to eat all the mulberry leaves, or try to leave some residual leaves.

Fourth, prevent silkworm poisoning caused by using rice straw in silkworm rearing, and use rapeseed stalks as little as possible to prevent tick disease.

Due to the serious occurrence of rice diseases and insect pests last autumn, a variety of pesticides were used in rice fields with high frequency and large pesticide residues in rice stalks. Experiments by the Economic Research Bureau of the Provincial Department of Agriculture showed that many samples were poisoned with straw as bedding and covering material. Therefore, I hope that the majority of silkworm farmers will not use straw as bedding to raise silkworms, nor can they use straw as feed to prevent silkworm poisoning. Many farmers who raise ground silkworms are prone to tick disease if they use rape straw as bedding grass. Therefore, use rape stalks as little as possible to prevent silkworm diseases.

Fifth, do a good job in the relationship between land and neighbors to prevent pesticide poisoning of silkworm children.

Mulberry gardens are not contiguous, and there are many phenomena such as arranging flowers or growing vegetables with tea leaves. In order to prevent pesticide poisoning of silkworm children, farmers should do a good job in the relationship between land and neighbors, try a small amount of silkworm before feeding mulberry leaves every time to ensure non-toxicity, and then give a large amount of mulberry leaves; When silkworm poisoning occurs, symptomatic rescue must be carried out in time.

Sixth, do a good job in cocoon management and improve cocoon quality.

The cocoon closing room should be dry upstairs, and the outdoor pre-closing technology of lattice cocoon should be actively promoted and applied. Ventilation should be strengthened in cocoon closing room. If the temperature is low, it should be properly heated, but the doors and windows cannot be completely closed. An exhaust fan or an electric fan can be used to prevent the cocoon from turning yellow.

Seven, do a good job in summer cutting in time.

There are many varieties of agricultural mulberry series developed in recent years. According to the situation that after summer cutting in recent years, the series of agricultural mulberry has more juice and poor germination. When cutting, choose sunny days, leave 1-2 thin strips or 2-3 trifoliates at the base of each mulberry tree, and cut the strips after 3 days to improve the germination rate.

Special mulberry seeds for sericulture

There are quite a lot of silkworm eggs, and there is nothing special for them. Many of them are sold online. China is the first country in the world to plant mulberry and sericulture, and it is also one of the great contributions of the Chinese nation to human civilization. Mulberry has been cultivated for more than 7000 years. In Shang Dynasty, characters such as mulberry, silkworm, silk and silks appeared in Oracle Bone Inscriptions. By the Zhou Dynasty, mulberry picking and sericulture had become an ordinary farm work. During the Spring and Autumn Period and the Warring States Period, mulberry trees were planted in pieces.

What should I pay attention to when raising silkworms?

Spraying mulberry leaves to raise silkworms: add 5 ml of fermentation broth to 1 kg of water and spray 10 kg of mulberry leaves once a day. Silkworms love to eat, their feces are odorless, their growth is fast, their cocoon thickness and quality are good, and their yield can be increased by about 10%.

Spray silkworm body to cool down and relieve summer heat: in summer, the temperature is high, and the silkworm is easy to get sick. If the room temperature is too high, the silkworm is easy to die of heatstroke. In hot days, add 5 ml of fermentation broth to a catty of water and spray it on the silkworm body once every afternoon.

Spraying mulberry leaves to keep fresh: The temperature is high in summer, and the picked mulberry leaves will turn yellow and deteriorate for a long time. The autumn climate is dry, and the harvested mulberry leaves will dry up and harden if they are left for a long time. You can add 5 ml fermentation broth to spray mulberry leaves, then put them into woven bags or pile them on the ground, cover them with plastic sheets, and keep them fresh and green for 24 hours.

Spraying mulberry leaves to promote growth: one catty of water 1? 2 ml fermentation broth, mulberry field sprayed with mulberry leaves 2? Triple, adding 0.2% potassium dihydrogen phosphate is better. It is advisable to spray mulberry leaves until they are completely wet and not dripping. Mulberry leaves grow fast and the leaves are oily green, which can increase production by 20? 25%。 It can also reduce pests and diseases.

Note: Antibiotics should not be used within 6 hours before and after using the fermentation broth of Vigor 99 starter. No matter how long the fermentation broth is preserved, it can be used as long as it smells sweet and mellow, and it can't be used if it stinks.