In the sericulture process, poisoning sometimes occurs, and silkworms affect the growth and development of silkworms, and cause death in large numbers. Therefore, we must attract the attention of silkworm farmers, take measures to avoid losses. Gas poisoning The silkworm eggs are incubating or small silkworm one or two instar. The temperature of the silkworm is low, and heating is required. If coal products are used for heating, there are no exhaust facilities on the coal stove, and the toxic gases such as carbon dioxide, hydrogen sulfide, and carbon monoxide that are generated accumulate in the interior of the silkworms, which can cause poisoning in silkworm eggs and small silkworms. Silkworm eggs are poisoned during the soaking period and are prone to dead eggs or incomplete hatching. Small silkworm poisoning, chest enlargement, spit water, tail contraction, and soon died. Most of the corpses were rotted. After the skin broke, brown sap and some dried up. Prevention and control measures: Use worm bed breeding silkworms, ground fire dragons, electric heating and other methods to avoid toxic gases in the silkworm chamber; if using coal stove heating, be sure to install the exhaust pipe, regular ventilation. Once silkworm eggs or small silkworm poisoning is found, ventilation and ventilation should be carried out immediately, and the silkworm eggs or small silkworms should be moved to the place where the air circulates in order to relieve symptoms of poisoning. 2. Exhaust gas poisoning If Jamsil is near to the "three wastes" polluted place, harmful components in the waste gas, such as fluorides, sulfides, chlorides and other toxic gases, will cause chronic poisoning in the silkworm body. Poisoning worms have a loss of appetite, develop slowly, become dirty, and gradually shrink and die. Prevention and control measures: The new planting mulberry field should be kept away from factories that emit “three wastes†to prevent the harmful gases from affecting the mulberry field; no mulberry leaves that pollute toxic gases should be fed to the silkworm to prevent encroachment after poisoning. 3. Pesticide poisoning One is exposure to pesticide poisoning; the other is inhalation of pesticide poisoning; and the third is ingestion of mulberry poisoning contaminated by pesticides. Poisonous silkworms crawl everywhere, silkworms have atrophic body, a lot of vomiting fluid, and some excretion of beads, excrement, etc. Severe poisoning will soon die, and mild poisoning silkworms may recover. In the middle and late 5th instar trace poisoning silkworm, there was no obvious symptoms at that time, but after the upper tufts, it often became non-fat silkworm. Prevention and control measures: Pesticides are forbidden to be stored in the silkworm room; correct use of pesticides does not require silkworms fed by mulberry leaves contaminated by pesticides. When the phenomenon of poisoning is found, the cause should be immediately identified. Lime powder should be scattered to the silkworms to isolate poisons and fresh mulberry leaves should be fed. For mildly poisoned silkworms, clean cold water or cold tea can be used for rinsing and vomiting to promote recovery; effectively strengthen feeding management. Reduce poisoning losses. 4. Toxic poisoning Silkworm body contact with or eating mulberry cat poisonous hair, it will cause the body trauma or chemical poisoning, especially small silkworms. Small silkworms were poisoned by the poisonous hairs of mulberry caterpillars, and their appetite was eliminated. The silkworm body shrank and died quickly. Prevention and control measures: Seriously prevent and control pests in mulberry fields, eliminate mulberry caterpillars, prevent mulberry caterpillars and mulberry caterpillars from mixing into silkworms; do not use mulberry leaves with mulberry leaf and mulberry leaf attached to mulberry caterpillars to prevent mulberry caterpillars from harming silkworm body.
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