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Feeding late autumn silkworms
The rearing of silkworms in late autumn is generally from mid-September to mid-October. Although the feeding period is short, as long as the measures are conducted properly, the economic benefits are still good. First, strict disinfection, control of silkworm disease hazards. After feeding the late autumn silkworm, the silkworm house was cleaned and the silkworms were washed and dried. The surface of the Jamsil ground was scraped with a layer of new soil, and 20% of the lime slurry was used to paint the walls. The bleaching powder clarifier containing 1% of available chlorine was used to sprinkle the surface of the silkworm room, the walls, and the silkworm equipment. Close the doors and windows to keep them moist and dry. During the breeding process, use a bleaching solution containing 0.3% of available chlorine and a small towel to pick up the clear liquid with a new towel. Gently wipe the mulberry leaf on both sides and feed it. After the silkworm stage wet leaves with clear liquid at noon Feeding to prevent food poisoning of silkworms; use one anti-pointing powder to prevent the occurrence of deadlock on ants, silkworms of various ages, and silkworms of all ages; start from the third instar silkworm and start feeding 500 mg every other day. / liter of chloramphenicol to prevent the occurrence of bacterial diseases and viral diseases; each time after sand removal, it is sprayed with bleaching liquid containing 1% of available chlorine around the ground and walls to prevent silkworm infection. Second, regulate the climate and improve the feeding environment. One is to regulate the indoor temperature and humidity. The temperature of 1-2 instar silkworms should be maintained at 27-28°C, and the relative humidity should be maintained at 85-90%. After every 1 year of age increase, the temperature should drop by 1°C and the humidity should be reduced by 5%. The temperature should be maintained at 24-5 silkworms. At 25°C, the relative humidity should be kept at 70%. The second is to pay attention to the ventilation of the silkworm room. Especially in the big silkworm period, we must pay attention to the ventilation of the silkworm room. III Carefully rearing and strengthening the larvae's constitution 1. Receiving ants in a timely manner: Immediately after the silkworm species are brought back, they are laid out in a silkworm cocoon with a pad of paper. The cocoon of the cocoon is shading, and the lid is opened on the next day. Photoincubation of silkworm eggs, when a large number of ants are harvested when they hatch (preferably before 8 o'clock in the morning), after disinfection of the ant body can be fed mulberry leaves. 2. Leaf picking leaves: from the top of the mulberry branches, the first 2-3 leaves of the ants; the first 3-4 leaves of the first instar silkworm; the 4-5 leaves of the second instar silkworm; the third instar silkworm The 5-8th leaves were used; at the 4th age, the leaves were collected from the lower part of the mulberry branches. Mulberry silkworms of all ages grasped the fresh, tender saplings. When mulberry saplings were dried in the morning, 70% of the leaves were harvested. The remaining 30% were collected at the tip of the leaves in the early evening. With the collection and transport, prevent mulberry leaves withered. 3, ground feeding Mulberry leaves: feeding the late autumn silkworm to increase the number of mulberry, reduce the amount of mulberry each time, especially in the silkworm period every day and night feeding at least 6 times mulberry. The focus of supply mulberry is in the period of reduced food and food. As the late autumn silkworm sleep fast, reduce the feeding period does not make up the mulberry easy to cause part of the silkworm children hungry. When the silkworm will sleep, in addition to the use of fresh leaves, the first two sleep should increase the floating leaves before sleep, sleep master to eat 2/3 to give thin leaves, to ensure that satiety and sleep. 4. Diligently eliminates silkworm excrement: generally 1st instar except for 1 insult; 2nd instars from silkworms and before sleep; 1st in 3rd instars; 1st in 3rd instars from silkworm, feeding and before sleep; 4th instar The 5th age must be removed once a day. If the 5th age meets a rainy weather, it is best to remove 2 times a day. Fourth, to prevent rats and fly, ensure the number of heads of silkworm. During the sericulture period, cats were kept and medicines were released to prevent mice from eating silkworms. Myiasis is a common disease of late autumn silkworm, and care should be taken to prevent it. The first is to use 500 times the silkworm flies evenly sprayed on the mulberry leaves, add 1 time in the 4th instar diet, from the 2nd day of the 5th instar, add 1 time in the next day; 2 is before the Bright silkworms were washed in an aqueous solution of 300 times silkworm flies and then rinsed. Fifth, a reasonable search to improve the quality of silkworm cocoons. The silkworms of the upper cocoons should be suitable old silkworms. The standard is translucent thorax, yellow abdomen on the back of the abdomen, and 2-3 grains of excrement at the end of the anus. When catching on the fly, catch light and put it low, and use 120-150 heads of cooked silkworms for every meter. The silkworms can be harvested 7 days after the last autumn silkworms.