Spring young silkworm indoor breeding sericulture technical operation regulations

The tussah silkworm indoor breeding is the use of sericulture bags to feed spring silkworm juveniles, artificially create various conditions suitable for its growth and development, and conduct indoor silkworm rearing management. The application of this technology can have a good effect on the early harvest and seedling maintenance of spring tussah stocking, and lay the foundation for the ultimate stable production and high yield. At present, it has been widely applied in the Jilin area. In order to make this technology more scientific, concrete, and standardized, the author combines production practices from 2002 to 2006 and summarizes them for reference.
1 Material preparation Warming, heat preservation, ventilation, and light uniformity in the silkworm raising room (10 square meters for every 100 moths); plastic film kraft paper bag, one side is wood pulp 80g kraft paper, and the other side is a thickness of 0.04mm poly. Sack (sericulture bag) made of vinyl plastic film, 45cm in length and 30cm in width, 1 bag per moth; iron clip about 0.75kg in weight; heating facility and fuel; item: thermometer, wood pole , white coats, slippers, special washbasins, plastic bags for leaf collection (do not use plastic bags filled with pesticides, chemical fertilizers, etc.); disinfection equipment: sprayers, gas masks, rubber gloves, and egg-implantation sterilizers; disinfectant drugs: hydrogen Sodium oxide, formalin, hydrochloric acid, bleach, etc.
2 Silkworm rearing stands are selected according to the number of breeding moths. The sericulture frame is bred in the room for 4 to 5 days before the ants are collected. The height is 2m, and the stalks are kept at a height of 2m. 35cm, clamp distance 15cm. When raising silkworms, the silkworm bags are hung on iron clips.
3 disinfection
3.1 Indoor disinfection The ants are sterilized within 3 to 4 days before receiving the ants. First close the windows and doors, the room temperature rose to 24 ~ 26 °C, lime and spray the walls, the ground, and then use 3% formalin solution (36g of formalin per square meter with 10g) Spray walls, floors, and silkworms to disinfect, or disinfect and heat disinfect. Before sterilization in the room, the sericulture bag, iron clips and overalls, slippers, and silkworm feeding console (tables) that have previously been dried with 3% to 4% formalin at 25°C for 50 minutes before being sterilized should be dried. Wait and put in the room again to disinfect. The disinfectant should wear gas masks and rubber gloves to perform the operation. The spraying should be uniform, thorough, and thorough. One day before silkworm rearing, doors and windows were opened for ventilation, and the smell of the net was released. During the ventilation period, the indoor temperature was kept at about 20°C.
3.2 Environmental disinfection The sericulture outdoor walls, sidewalks, etc. are fully disinfected with quicklime or bleaching powder 2 to 3 days prior to silkworm rearing.
3.3 kinds of eggs were sterilized 1 to 2 days before silkworms were sterilized with a mixture of sodium hydroxide, formalin and hydrochloric acid. Specific methods: first silkworm eggs washed with water at 18 °C 1 ~ 2 times after the control of clean water, placed in a temperature of 18 ~ 20 °C, 0.5% sodium hydroxide solution, remove 1 minute, remove, wash with water 2 to 3 times (wash sodium hydroxide solution), and then soaked in a mixture of formalin: hydrochloric acid: water (1: 1: 10), the water temperature is maintained at 23 ~ 25 °C, disinfection for 50 minutes, remove and wash with water 2 or 3 times, after the control of clean water, put it in a cool place to dry quickly. After disinfection, the eggs must be placed in a sterile sericulture room to prevent the occurrence of 2 infections.
4 Indoor Management
4.1 One day before receiving the ants and ants, the eggs that have been sterilized and dried are placed evenly in the sericulture bag (one bag per single moth) and are hung on a silkworm rearing frame. The sericulture will be carried out before the ants are accepted on the second day. Fresh eucalyptus leaves are placed in the bag, and the area of ​​silkworms is controlled at about 1/8 to prevent ants from crawling. Accept the indoor temperature before the ant 19 ~ 20 °C, humidity 80% ~ 85%; after receiving ant indoor temperature during the day 22 ~ 24 °C, night 20 ~ 21 °C, natural humidity, light evenly.
4.2 leaves to the method every day 5 to 7 o'clock and 17 to 19 o'clock to give 1 time, at noon to observe the individual has eaten a small amount of additional leaves 1 times. The first time the silkworms were fed, the sericulture bag plastics were faced outwards, and they were folded into 1/8 area. Three or so new branches of eucalyptus buds were planted inside. Every time silkworms were fed, the area of ​​silkworms was gradually expanded and the amount of foliage was increased. In the sericulture bag. The early stage is slightly slower and the latter stage is slightly faster. It will be expanded to about 7/8 before the Qingshan uprising. When feeding silkworms, the size and number of raw litchi in the current year should be collected according to the development process of Bo'er. The amount of leaf feeding was gradually increased and gradually increased as the growth progress of silkworms. Sleep less or no feeding, sleep to increase the amount of leaf feeding. Each time the leaf is fed, it is appropriate to eat it cleanly, not to eat, and not to leave excess leaves. It is advisable that the leftover leaves are easily damaged by mildew and become susceptible to silkworm disease. Do not feed left leaves and wet leaves with rain. Each time a silkworm bag is fed to a silkworm, the action of feeding silkworms must be light to prevent scratching of the silkworm body and the paper should be placed face down so as to prevent the silkworm waste from contaminating the plastic surface. The collected loquat leaves must be placed in a sterile room and must not be close to harmful substances (pesticides, fertilizers, etc.).
4.3 When the humidity in the row of tide bags is too high (foggy beads), it is necessary to select warm outdoor air temperature, ventilation, and eliminate moisture.
4.4 When collecting leaves and feeding leaves, you must wash your hands with soapy water, change your overalls, and change your slippers when feeding leaves.
5 To eradicate germplasm infections with microscopic disease, the antworms of each moth area are numbered on the one side of the stenosis kraft paper for each single moth area 2 to 3 days before hatching, and the weaker silkworms 5 to 6 are assigned to each moth area. The first bag was subjected to microscopic examination, and it was found that the entire area was eliminated after the ward was again sampled and verified.
6 Uphill Feeding Management
6.1 The silkworm field chooses south or southeast to 2 to 3 year old eucalyptus trees to breed spring juveniles, and wrap them with wicker or sack lines etc. 1 day before climbing. Wait until the child can be raised from the green Qi Qi can be raised.
6.2 Smelting at low temperature Adjust the date of stocking up the mountain according to the weather conditions before the mountain. Open the doors and windows to lower the room temperature to a minimum, so that the silkworm will feel close to the natural temperature and undergo exercise, which is beneficial for keeping the seedlings.
6.3 When the mountains are raised up the mountain should be broken before the sunrise in the morning on the same day. If the silkworms are not fully developed, they can be divided into 2 batches of mountains, first from the blue mountains, and then from the late green days.
6.4 Destruction of silkworms Due to the slow movement of silkworms in the house (7-8 days), the southern part of the tree should be brought up to be stable.

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