First, disinfection time. Under normal circumstances, about 1 week before sericulture, silkworm silkworms and other silkworms have to be disinfected. Second, disinfection steps and methods 1, finishing silkworm room. Remove the piled objects in the silkworm cage, and then clean all the indoor and outdoor, roof, walls, and ground garbage without leaving a dead corner. The surface of the Jamsil soil is to be shoveled out of the topsoil and replaced with new soil. About 20% of the silk wall is fresh. Lime plaster. 2, scrub silkworms. All doors and windows that can be dismantled in the silkworm room and the size of silkworms, such as silkworm nets, silkworms, etc., must be cleaned in the living water river. The front and back must be cleaned, and the silkworm excrement and the silkworm body must not be seen. This can be reduced on the one hand. A large number of pathogens, on the other hand, can fully expose pathogens. After being cleaned, the sun was disinfected and the silkworms were exposed to the sun. 3, liquid preparation. Disinfectant liquids are used nowadays. The specific standards are: 1% chlorine-containing bleaching solution 1 kg bleaching powder 24 kg watered; 2% lime slurry is 1 kg lime-block watered 50 kg; 2% formalin lime water 1 kg of formalin (commercial formalin containing 36% formaldehyde) is added with 17 kg of saturated lime water (in a large tank, 2% lime water is prepared first, and the supernatant is left to stand and used for formalin) 250 times disinfecting solution is 1 bag of disinfected net (100 grams of equipment) with water 25 kg; sulphur, toxic fumes and other smoke fumes are sold on the market without self-provisioning. 4, impregnated disinfection. Place the size of the silkworm in the disinfection tank, dip it with 2% fresh lime slurry, immerse it for 5-10 minutes, and put it in the sun to dry it. The virus-prone areas should be considered the preferred formalin lime water disinfection. If there is no disinfection tank, we can also spray the wet liquid with silkworms, and we can choose to put the silkworms (except the large silkworms) in wet places and put them together. Immediately, the plastic film is placed on the bottom of the lid and tightly wrapped around the lid. The sun will heat for about 4 hours, which can increase the temperature and moisturize the skin, improve the disinfection effect, and in particular the effectiveness of formalin smoking. At the same time, the four walls of the Jamsil, the ground and the surrounding environment are also sterilized. 5, spray (fog) disinfection. Weave good silkworm equipment and use a sprayer to evenly spray the front and back sides of small and large silkworms, as well as walls, roofs, floors, and the surrounding environment. The available liquids are mainly 1% available chlorine bleach and 250 times disinfection liquid. Immediately after the disinfection of the liquid spray, the silkworm doors and windows were closed, and the temperature was warmed to 25°C and closed for more than 2 hours. 6, smoke smoke disinfection. Before silk smoke is sterilized, the silkworm shall be overhead, non-overlapping, silkworm nets, and perforated films, etc., shall be hung on the shelves, do not pile up, the gaps between windows and doors shall be pasted with newspapers, the temperature shall be controlled at 25°C, and the indoor humidity shall be greater when the smoke is sterilized. The better the disinfection effect, it is therefore advocating the disinfection of fumes immediately after the liquid is disinfected. The main drugs available are sulfur and dissipative. The method is to put 1-2 coal stoves in the silkworm room and spread the pre-weighed smoke smoke agent on the bottom of the pot. When the fire power is stable, the iron pot is placed on the stove, and after the medicine is melted by heat, a large amount of smoke is emitted immediately. The doors and windows should be immediately left and closed. After 24 hours of airtightness, the doors and windows can be opened for ventilation. Third, disinfectant dose and frequency. When the liquid is sprayed and disinfected, the amount of silkworm used is 0.225 kg per square meter, and the amount of smoked smoke agent such as poison dissipating is not less than 4 grams per cubic meter of space. When disinfecting, the concentration of liquid medicine should be formulated according to the standard, and should not be artificially increased or decreased. The proportion of preparation, so as not to reduce the disinfection effect. Under normal circumstances, the number of disinfections of silkworm silkworm before silkworm rearing is 3 times, namely the above-mentioned “two liquids and one smoke†to effectively kill all kinds of pathogens. Fourth, note 1, the use of disinfectants. Formalin and bleaching agents are corrosive. It is best to use water tanks or casks when formulating them. To ensure drug efficacy, it is best to use them now. Do not place them too long. Special attention should be paid to the fact that bleaching liquids cannot be mixed with lime preparations. use. Each time you have to heat and moisturize. 2, silkworm indoor and outdoor everywhere to disappear. All the silkworm parts do not leak and disappear, and the ground, the roof, and the corners should not leave corners. The metal, fiber, and paper should not touch the disinfectant. 3, to avoid fire. When the fume smoke is disinfected and the fire is excessive, a flame of about 1m can be emitted. Therefore, the fire should be kept away from the silkworm to avoid fire. If the indoor humidity is not enough, the silkworm may have white crystals and the ventilation can be increased. Disappear naturally or dry with a damp cloth. 4, after disinfection, pay attention to the problem. After sterilization, do not open the silkworm room at will, and do not use silkworm implements for outdoor use. Do not wash with water. Unsterilized objects should not be taken into the silkworm room at random, so as to prevent germs from infecting the silkworm silkworm enclosures and properly keeping all types of objects. China Agricultural Network Editor
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