Control of bacterial Diseases in Silkworm, Bombyx mori
Bombyx mori bacterial disease usually occurs in summer and autumn. It is caused by a large number of bacterial parasitic silkworms and infects the whole body with blood circulation. It is mainly caused by trauma and food transmission to the whole body. The prevention and treatment measures are as follows:
1. Before, during and after sericulture, a bleach solution containing 1% chlorine should be used to strictly disinfect silkworm furniture, ancillary facilities and surrounding places.
Second, strengthen feeding and management, when feeding mulberry and silkworm, the action should be light and carefully operated. Bombyx mori should be expanded frequently, and the silkworm head should not be too dense, so as to reduce the chance of infection caused by silkworm trauma.
Third, timely elimination of sick and dead silkworms, picking up dead silkworms should be burned or buried deeply, so as to reduce the chance of silkworm infection.
Fourth, chloramphenicol has obvious preventive and therapeutic effect on silkworm bacteria. The blending method is to add food by spraying 10 kilograms of mulberry leaves with 1 kilogram of chloramphenicol aqueous solution per milliliter.
Fifth, reasonable mulberry storage time should not be too long to avoid mulberry leaves being hot and sticky and bacteria multiply in large numbers. It is necessary to pick leaves and feed silkworms now so as to reduce the chance of food transmission.
Sixth, strengthen mulberry fertilizer management and pest control work to improve the quality of mulberry leaves, enhance the physique of silkworms, and improve the ability of disease resistance.
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Conditions and main technical requirements for co-rearing of young silkworms
First, the purpose of co-rearing young silkworms, as the saying goes, "raise half of the young silkworms", which fully illustrates the importance of raising young silkworms. The purpose of the co-rearing of young silkworms is to enhance the physique of young silkworms to ensure the safety of large silkworms and to achieve high quality and high yield of cocoons. The advantages of small silkworm co-rearing are as follows: (1) it is beneficial to realize scientific sericulture, adopt advanced sericulture technology and facilities, promote the neat development and strong physique of young silkworms, provide guarantee for large silkworm rearing, and lay the foundation for high and stable cocoon production. (2) it is beneficial to disinfection and disease prevention. Overcome the resistance of young silkworms to adverse environment
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Bermudagrass (bermudagrass)
A species of the genus Bermudagrass of the family Gramineae, scientific name Cynodondaclylon (L.) Pars., perennial herbs. Also known as tripping root grass, Xing Yizhi. For excellent forage grass, turfgrass and soil and water conservation crops. It is distributed in warm areas all over the world, and China is distributed to the south of the Yellow River basin. The fibrous root is fine and tough; with rhizome or stolon, the length of the Internode is different, the flat ground part of the stem is more than 1m long, and takes root and branch on the node, the upright part is 10-30cm high; leaves
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