Ponds are places where aquaculture animals inhabit and where pathogens breed. The cleanliness of the pond environment directly affects the health of various aquaculture animals such as fish and shrimps. Therefore, disinfection of clear ponds is an indispensable part of aquaculture work and must be highly valued. First, dry pond clear pond, reinforcement pond base. Experienced farmers, after fishing in the winter, drain the pond water, dig out a layer of sludge, and then expose it to sunlight, which can achieve the purpose of eliminating insect pests. If it is necessary to raise winter fish and shrimps for production purposes and fail to use it in winter, the tea cakes are crushed first and then used in a bucket soaked in hot water overnight. Generally, the amount is 40-50 kg per mu (1 meter depth ) After soaking a good rapeseed cake and adding a lot of water to the pool, the whole pool will spill evenly. The best choice is to use sunny weather and use it better. The rapeseed cake has a fertilizing effect, but the disease prevention effect is not as good as that of quicklime. Therefore, after applying the rapeseed cake, the fish is then disinfected with a strong disinfectant or strong chlorine, and the dose of 0.5-1 kg per acre of water (1 m water depth) is dissolved in the water and the whole pool is splashed with water. Kill viruses and bacteria. After the dry pond is finished, a part of the sludge at the bottom of the pond can be extracted with a sewerage machine, or the sludge can be taken out with a bamboo rake, and transported in a small boat to the shore for plant basal fertilizer. This will reduce the amount of sludge at the bottom of the pond, which will help reduce The breeding of pathogens. At the same time, weeds should be removed from the pond dike to reduce the number of places where insects lay eggs. At the same time, reinforce the foundation of the pond to prevent leakage. Second, the clear pond 1. Lime clear pond; After trimming fish and shrimp ponds, choose sunny clear lime clear pond, use 50-100 kg lime per acre, dry dry powder evenly to the bottom of the pond or pool bottom and pond foundation, then enter into 4- 6 cm of clean water, the next day with a long handle rake to the bottom mud and lime slurry and mix thoroughly to play the anti-virus role of quick lime. Some fish and shrimp ponds, if they cannot be drained before the clear pond is clear, or if the original pool water is discharged, it is impossible to make up for new water. Each mu of water (1 meter water depth) can be used 120-150 kg of quick lime, into a small boat, add water into a mortar, hot and splashing the whole pond. 2. Rapeseed cake and clear pond: The rapeseed cake is a clear pond agent that is commonly used by fishermen in Guangdong, Guangxi and Hunan. 3. Bleach, strong chlorine, and strong disinfectants for fish clearing ponds: bleaching powder, strong chlorine, strong disinfectants for fish are chlorine-containing disinfectants, and they are characterized by high efficiency, rapidity, and strong bactericidal power. Bleaching powder is not stable, and production tends to use more stable strong chlorine powder and powerful disinfectants for fish. Bleach is generally used in an amount of 13.5 to 20.0 kg per mu (1 meter water depth), and the whole pool is uniformly sprayed after melting. Strong chlorine and fish with a strong disinfectant, with water clear pond generally per acre (1 meter depth) with 1-2 kilograms of water, after the water Quanchiposa. After 7 days disinfection using the above method, the pond water is set to the required water level, and then 500 grams of crystal trichlorfon is sprayed on the water surface (1 meter water depth) to spray off the water in order to kill water parasites. 3 days later, disinfect the water body with chlorine dioxide, generally use 1 bottle (500ml) for each acre (1m water depth) and fill it with a bottle of water. After 2-3 days, wait for the water to turn green. When you can put fry, shrimp seedlings.
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