CATDOLL : CATDOLL: What are the essential knowledge points for raising silkworms? (What are the essential knowledge points for raising silkworms?)

1. What should we pay attention to when raising silkworms?

Summer and autumn silkworm breeding should pay attention to

1. Prevent pesticide poisoning. During the silkworm-raising season, do not spray organic pesticides such as dimethoate in the silkworm room and the fields near the mulberry fields, as the smell will cause poisoning to the silkworms; mulberry leaves should be fed to the silkworms only after they have been tested and confirmed to be non-toxic.

2. Mosquito-repellent incense or mosquito repellent or insecticide is prohibited in the silkworm room. If it is used in the house near the silkworm room, the doors and windows of the silkworm room should be closed to prevent the silkworms from being poisoned.

3. Screen doors and windows should be installed in the silkworm room to prevent flies from entering the room and harming the silkworms, and "silkworm fly killing" emulsion should be added or sprayed on the silkworm bodies to kill the maggots.

4. Before raising silkworms, rat holes should be blocked, silkworm racks should be kept at a certain distance from the wall, and lime powder or silkworm medicine should be sprinkled around the legs of the silkworm racks to prevent rats from climbing up. When raising silkworms, drugs should be used to kill rats.

5. In summer and autumn, the temperature is high when raising silkworms. Open doors and windows to increase indoor ventilation. Spraying mulberry leaves with clean water and using electric fans to blow breeze indoors can also help cool down the room.

6. If sick silkworms are found, they should be cleaned up in time and placed in a disinfection basin filled with bleach solution or lime slurry. It is forbidden to feed sick silkworms to livestock and poultry to prevent the spread of pathogens and pollute the environment.

7. Silkworm feces contain a large amount of pathogens. Do not spread them out to dry around the silkworm room. Instead, compost them in a pile outdoors or in a manure pit to prevent the spread of pathogens.

8. In summer and autumn, the temperature is high and pathogens multiply quickly. Pay attention to picking leaves on demand, transporting leaves in time, and storing leaves properly. The mulberry pool should be disinfected once for each age, and do not feed mulberry leaves overnight.

9. Avoid feeding wet leaves in hot and humid weather. Do not water the stored mulberry leaves. Remove sand frequently and sprinkle more fresh lime powder, dry straw and other materials to inhibit the growth and reproduction of pathogens.

10. When it is not the silkworm-raising season, do not store grains, bran and other items in the silkworm room to avoid moisture and the generation of mites, which will harm the silkworms during breeding.

Additional information:

Five common misunderstandings about the use of drugs in silkworm rearing In recent years, many silkworm farmers have used excessive and unconventional drugs in the prevention and treatment of silkworm diseases, which has resulted in drug poisoning of silkworms and aggravation of the disease, causing unnecessary losses in silkworm production. The author introduces the five common misunderstandings about the use of drugs in the silkworm rearing period as follows for reference by silkworm farmers.

1. The misunderstanding of using drug carriers is to spray silkworm medicine on mulberry leaves to add food to silkworms. Mulberry seedling planting technology and mulberry tree disease and insect pest control should be sprayed (sprinkled) on silkworm bodies, silkworm seats, and silkworm webs, which should be determined according to the disease type and drug type. But the actual situation is that drug carriers are often confused. For example, "Fangjiangling No. 2" is often sprayed on mulberry leaves by some silkworm farmers as a food drug, which often leads to poisoning and death of silkworms. And "Chloramphenicol for Silkworms" and "Kanjun Bacteria" that should be used to add food are often used on silkworm bodies, which is not only ineffective but also misses the best time to prevent and control silkworm diseases.

2. Misunderstandings in drug selection Some silkworm medicines are quite similar in appearance and color, and are often used incorrectly. "Big Silkworm Disease Prevention No. 1" and "Small Silkworm Disease Prevention No. 1" are only one letter different, both are bagged powders, but the concentration of the active ingredient - formaldehyde is significantly different, the former is 2.5%, and the latter is 1.25%. If they are used in reverse, it will cause drug damage to small silkworms and poor effect on large silkworms. According to the Agricultural and Forestry Network, "Fangjiangling No. 2" and "Mi Canfei" are often mixed because of their similar colors. More silkworm farmers do not know the efficacy of silkworm medicines and cannot choose the right medicine when selecting. What's worse, because they think the medicine is not strong enough, they mix and use multiple silkworm medicines, which actually promotes chemical reactions between the medicines, making the silkworm medicine lose its original efficacy and even causing drug damage. For example, "Fangbing No. 1", "Mi Canfei", "Fangjiangling No. 2" and other alkaline drugs such as lime powder should not be mixed at the same time.

3. Misunderstandings about the timing of medication. For example, when using lime powder during the dormancy period, there is no time distinction. Some people use it until the late dormancy period, causing the silkworms to molt half or not at all. "Anti-rigidity powder" works best when used before feeding at the beginning of the instar, but some silkworm farmers use it at the end of the instar when the silkworms are about to dormancy.

Fourth, the misunderstanding of the dosage of medicine is often manifested in insufficient dosage, excessive dosage, insufficient or too frequent dosage. For example, the dosage of "Ultra-Clean" fumigant used in the young silkworm stage is confused with the dosage used for disinfection before silkworms are killed, and 5 grams are used per cubic meter of space instead of 1 gram. In addition, when preventing and treating silkworm fly maggot disease, some people use "silkworm fly killing" once in the fifth instar of silkworms and think that it is enough, resulting in countless maggot holes and silkworms when collecting cocoons.

5. Mistakes in drug preparation: Drug preparation is based on guesswork and the concentration of the original drug is not taken into account, resulting in a high or low concentration. For example, when preparing bleaching powder to prevent stiffness, the effective chlorine concentration should be 2% for young silkworms and 3% for adult silkworms. However, in the prevention and control of silkworm diseases, the phenomenon of excessive effective chlorine concentration causing poisoning and death of adult silkworms occurs in almost every region and every season.

2. What are the things to pay attention to when raising silkworms, feeding them and laying eggs?

1. Temperature: Silkworms are very afraid of cold, so we always hear about spring silkworms. There is also a famous poem that only mentions spring silkworms, which is "The silkworm may not stop spinning silk until it dies, and the candle may not stop shedding tears until it turns to ashes." Therefore, we must pay attention to the breeding temperature when raising silkworms. Usually April and May are the best times to raise silkworms. The temperature at this time is basically around 20 to 25 degrees. We don't need to spend a lot of effort to adjust the temperature of the breeding room. Therefore, through the adjustment of temperature, the practice of raising silkworms in other seasons gradually emerged.

2. Mulberry leaves

When raising silkworms, you should pay attention to the fact that mulberry leaves should be fresh. At most, mulberry leaves that have been left at home overnight can be used to feed silkworms, but if the leaves are not fresh for too long, the silkworms will have diarrhea after being handled or will not eat them at all. The second thing to pay attention to is that the mulberry leaves must be cleaned and dust-free. At the same time, you cannot feed the silkworms mulberry leaves that have dew on them or that are not dry after washing, because the silkworms will have diarrhea and then die after eating them. Finally, mulberry leaves that have been sprayed with agricultural drugs not long ago cannot be picked and fed to silkworms, because silkworms are particularly sensitive to toxins.

3. Hygiene

We all know that the living habits of silkworms are the same as pigs, eating and sleeping, sleeping and eating, but silkworms are much more fragile than pigs, so the requirements for the sanitation of the breeding room are also relatively high. Many farmers have to clean up every few days during breeding. In fact, this is wrong. It is usually best to clean up every day. Although silkworm feces have certain medicinal value, they will produce bacteria in the breeding room and cause some diseases. In addition, we must clean out the silkworm skin and leftover mulberry leaves in time, especially food residues.

4. Management

In fact, attention should be paid to the management of silkworms during the feeding, daily life and cocooning period. In feeding, it should be noted that mulberry leaves should not be fed all at once. Generally, they should be fed at least twice a day in the morning and evening. Secondly, in daily management, it should be noted that incense should not be used in the breeding room, and mosquito coils, perfumes and other things with strong odors should not be placed in the breeding room. Otherwise, the silkworms will not be able to bear it and will die. Finally, during the cocooning period, we need to prepare a place for the silkworms to cocoon, so that they will not be so laborious when cocooning. If we do not provide assistance, they may become pupae before the cocoons are completed.

5. Disease prevention

There are many minor diseases that may occur during silkworm rearing. For silkworm rearing, disease prevention is the main approach. The sick silkworms should be taken out for isolation and disinfected with special agents. Sick silkworms should not be thrown away randomly, as they are highly contagious. Mites, rats, chickens and other animals should not be allowed into the breeding room, otherwise there will be heavy losses.

3. What are the silkworm breeding techniques and precautions?

1. First of all, the best time to raise silkworms is from April to May every year. In this season, you can buy silkworm eggs, which are silkworm eggs, outside. You can directly place the silkworm eggs on mulberry leaves.

2. Under normal room temperature in April and May, that is, between 20 and 25 degrees Celsius, silkworm ants will hatch into silkworm babies within two days.

3. When it hatches into a silkworm, it starts to eat by itself. The food that the silkworm eats is clean and fresh mulberry leaves, which means that the mulberry leaves collected must be washed and then fed to it.

4. However, it should be noted that silkworms cannot eat raw water, so the mulberry leaves should be washed and dried before feeding them.

5. The silkworms continue to grow while eating mulberry leaves. After the fourth molting, they begin to spin silk and make cocoons. Then they will break out of the cocoon!

4. What should we pay attention to when raising silkworms?

Details to pay attention to when raising silkworms

1. Remove sand before dormancy. This is to avoid excessive accumulation of silkworm feces, which can easily breed and spread pathogens and invade the silkworms during their dormancy.

2. Silkworms do not eat or move during the dormant period. They mainly rely on the nutrients absorbed by eating mulberry before dormancy to maintain their life activities. Therefore, they must sleep when they are full. If you stop feeding mulberry too early, they will starve to sleep. Starved silkworms are weak in constitution, poor in resistance, and prone to illness.

3. Silkworms are less resistant to external interference during their dormancy, so you must pay attention to their protection during dormancy. When 95% of the silkworms have fallen asleep, sprinkle them with fresh lime powder and silkworm medicine "Disease Prevention No. 1" to prevent pathogens from invading. If a small number of silkworms do not eat mulberry and do not sleep, it is because they have not found a place to sleep. At this time, add some mulberry leaves to help them sleep in batches.

4. Silkworms are temperature-changing animals, and their adaptability range is 20-30℃. In the spring silkworm period, the climate is often low and humid, so the focus is on replenishing warmth and removing moisture. In the summer silkworm period, the climate is hot and humid, so the focus is on cooling and removing moisture, keeping the air in the silkworm room flowing, and removing the stuffiness. In the autumn silkworm period, if the weather is hot and dry, it is necessary to replenish moisture indoors and combine disinfection, that is, spray the ground and walls with fresh lime powder and bleaching powder; you can also hang a wet cloth on the silkworm rack to keep the silkworm room moist to prevent the silkworms from having difficulty molting or half molting.

5. Some basic knowledge about silkworm rearing?

After receiving the silkworm seeds, place the silkworm eggs in a small box for hatching;

After the larvae are born, put them into another box with a brush or soft brush and feed them some mulberry leaves (not wet ones).

Before the silkworms make cocoons, a small grid is built to allow them to make cocoons.