In recent years, fulminant shrimp disease has occurred frequently throughout the country and has not been eradicated. For this reason, the vast number of fishermen desperately needs a cultured species that is less risky for investment, labor-saving, less labor-intensive, less disease-prone, and has yield benefits comparable to that of shrimp culture. Now we summarize the relevant technical points of the black sea bream in the shrimp pond breeding as follows for reference. I. Cleaning and Preparation of Culture Ponds 1. In principle, waste shrimp ponds are used, with a size of 20-50 mu. There is a good deep trench in the middle of the bottom of the pool, and the depth of the pool water is 1.2-1.5m. 2. Shrimp ponds should be ploughed and exposed to sunlight to fully oxidize and decompose the deposited mud. At the same time, 50-60 kg/mu quicklime clearing pond should be used to sterilize and remove wild fish. 3. In mid-April, organic fertilizer is applied to the influent to make the basic bait in the pond breed. It is best to stock up in the pond for bait, sand cocoon, cockroach, lancome, etc. as black bait. 4. No industrial pollution and harmful substances are required around the shrimp pond. Second, the source and launch of black carp seedlings Fry is best derived from wild seedlings, artificial seedlings can also be, and the size of 125 grams or more. Farming until December, when the water temperature and temperature are low, the general specifications can reach about 500 grams. 2. Raising fish fry should be carried out in mid-May when the water temperature exceeds 15 degrees Celsius, and it is required that the fish body surface be free from damage and scales. Sensitive to stimuli. There are no other conditions. 3. Before the fish were put into the pool, 2.0 ppm of 90% crystals of trichlorfon crystals were dipped for 1-2 minutes to remove the parasites. 4. No industrial pollution and harmful substances are required around the shrimp pond. Third, the source and launch of black carp seedlings Fry is best derived from wild seedlings, artificial seedlings can also be, and the size of 125 grams or more. Farming until December, when the water temperature and temperature are low, the general specifications can reach about 500 grams. 2. Raising fry should be performed in mid-May when the water temperature exceeds 15 degrees Celsius. It is required that the fish body surface be free from damage and scales, sensitive to stimulation, and free from other diseases. 3. Before the fish fry enter the pond, apply 2.0ppm of 90% crystal trichlorfon solution to dip for 1-2 minutes to remove the parasite. 4. Fry stocking density of 350-400 tail / acre is appropriate, can be properly mixed barracuda. The survival rate of aquaculture can reach more than 95%. Fourth, aquaculture management Feeding: Fish, gluten fish, and miscellaneous fish are mainly used, and scallops and other leftovers are fed at intervals. The feeding amount is 5-7% of the fish's body weight and is fed twice a day, and is measured every 20 days. The number of body weight changes once. The fed bait must be washed clean and cut into small pieces if necessary. In addition, some shrimps can be properly fed during the breeding process to make the fish body glossy and reduce the blackening of farmed fish. 2. Domestication: When the fry is first introduced into the shrimp pond, it is easy to be frightened. It is difficult to feed and it should be gradually domesticated. Firstly choose a location (requirements: water depth of 1.5m or more, flat, no debris, good water quality) as a designated feeding site for black sea bream. Gradually lure when bait is fed, first scatter and spread to the designated place 5-8 meters after a few days. After 15-20 days, domestication can be successful. 3. Water quality management: The pool water can be exchanged every 10-15 days. The exchange volume is 20-30% each time. When the water color is yellow-green, oil-green, and the transparency is about 30cm, the growth rate of the pool fish is obviously accelerated. When the temperature and water temperature are high in July and August, the water should be changed once every 5-7 days, and the water quality should be adjusted accordingly. Try to avoid big strides. So as not to change the quality of pool water, affect the normal feeding and rest of fish.
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