Pond pond raising (1) Pond conditions and preparation The pond area is suitable for 3300m2-6600m2. The water depth is more than 2m. The water source is sufficient, the water quality is non-pollution, and there is good water intake and drainage facilities and convenient transportation. Before restocking, the dry pool should be dredged and leveled to protect the slope. The quicklime should be used between 750kg and 1050kg per hectare to keep the water in the pool at 10-20cm and soaked with spatter. After 7 days, add water to 1m deep. In order to maintain the water quality, diammonium 75kg/hm2 can be applied once. After two days, the pool water becomes oil green and can be stocked. (2) Temporary rearing of fish species and stocking of eel fry species are currently mostly sea catches. Spring spring catches are approximately 2.5 cm-4 cm. Fish are subject to varying degrees of injury as a result of harvesting and transport. In order to increase the survival rate of fish farming, it may be carried out first. Holding in the middle. It is more convenient to set up a 40-mesh cage in the rearing tank. 2000-3000 tails were raised per cubic meter of water body, and they were disinfected with 110-6-210-6 chloramphenicol, and the post-fish furazolidone was consumed. The first 10 days of feeding Artemia larvae or marine freshwater horns, copepods, and then fed fresh fish. The fish species are cultured to about 10 cm and put into a pool at 1.5 tails/m2. (3) Cultivating management A. Feeding baits is mainly for low-grade miscellaneous fish, supplemented by artificial ingredients. The squid grabs fast and has a large content. It is very important to ration regularly. When feeding, it is necessary to grasp the fullness of the fish without wasting food. Each time the first feeding of the fish is increased, the feeding amount is increased when the fish is first raised and the fish is fed up. When the fish sinks, the feed is stopped when the food is not caught. The daily feeding amount and the feeding amount vary depending on the season. The optimum temperature for the rapid growth of carp is 4-5 times daily, and the amount of bait is 10-30% of the fish's body weight. Early spring and late autumn at low temperature, and 2-3 times daily feeding, accounting for 1-10% of fish's body weight. . B. The inspection of the patrol pond will be performed sooner or later. The observations of the patrol pond include the activities of the fish body, the changes in pond water color, odor, transparency, pond escape prevention facilities and predators. Cage rearing (1) Breeding conditions in the sea area require ventilation, and maintain a water depth of 5m or more at low tide. The water flow is unobstructed and 0.3m per second is appropriate. The bottoms are free from obstructions, the water quality is clean, and the salinity is small. (2) Structure of cage structure Raft cages are fixed on the pipe racks and nets are sand-filled bags. The fixed type is made of a metal pipe which is slightly larger than the frame of the cage, and the cage is fixed in its inner shape. The sandbag type is to hang a 4kg sandbag at each corner of the cage body to fix the mesh type. In the South, wooden planks are used to make qualified fish fillets. They are floated on the surface of the water and anchored by anchor cables. The cages are hung in the fish row. In the north, there are many single-floating single-floating frames, and the floating cages are connected to floating ropes in the sea area. The size of the net mouth is usually 33m and 44m. The net depth is determined by the water depth of the sea area at any time. Usually 4-6m, the net size depends on the size of the fish. The mesh principle is used to break one head without escaping the fish. The mesh should be smaller than the mesh size. The body height is 1/2. (3) Fish species Stocking squid To develop commercial fish in that year, the seedlings should be raised to more than 10cm and then counted into a cage. The number of water bodies per cubic meter of cage is 20-30. The specific stocking densities should be determined according to the specifications of the fish species, the condition of the sea in the seasons in the season, the stocking of the bait, and the breeding technique. (4) Feeding bait is mainly based on low-value miscellaneous fish, and can also be fed with grain feed. Each feeding should be less after first, and the amount of bait should be increased after feeding the fish to catch food. If you don’t eat enough food, you should stop feeding when the fish do not catch food. The number of feedings is 4-5 times a day and the daily investment is 2-3 times when the temperature is low in autumn and evening. (5) Routine management often wash network elements and remove attachments, usually 10-15 days, replace new cages if necessary, check cages, and prevent leakage. Pay attention to fish, water conditions and diseases. Disease control (1) White eyeball disease [symptom] is more common in spring and summer fish species. White spots appeared in the eyeballs, which gradually enlarged and covered the entire eyeball. Severe eyes protruded and fell off. The disease can be caused by the lack of fresh food and vitamin deficiency. [Prevention and Control] Renew aquaculture water, feed fresh food, and add vitamins (especially VB) to food. (2) Saprolegniasis [Symptoms] Flocculate bacteria appear in the fish. The diseased fish swim slowly on the surface of the water. Loss of appetite and weight loss result in infection. [Prevention] Replace with fresh water and maintain good water quality. Dissolve MG of 610-6 in malachite green for 5-10 minutes. (3) skin ulceration [symptoms] more common in hot seasons. Local descale fish, congestion ulcers. Mostly caused by bacterial infection caused by fish injuries, sick fish loss of appetite, floating slow swim, weight loss and death. [Control] with 2010-6 plus chloramphenicol (or nitrofurazone) bath 4h-5h. (4) enteritis disease [symptoms] diseased bloated anus swollen anal, yellow mucus outflow, fish weight loss, loss of appetite, severe death. It is caused by the deterioration of the bait and the high fat content of the bait. [Control] Furazolidone baits were formulated in an amount of 0.1% and fed continuously for 5-7 days. (5) Fish gill disease [Symptoms] Fish parasite fish gills, sick fish swim disturbed, rely on pool wall friction, weight loss of fish body weight loss. [Prevention and control] with crystals trichlorfon Quanchiposa, so that the pool of water containing 0.2510-6-0.310-6, every 3 days and then apply once, usually twice the medication can be cured, can also be used pure fresh water bath 2-3 In minutes, the fish can also fall off on its own.