Shallow ponds fish culture shallow ponds with a water depth of 2 meters or less do not meet the fishery high yield standards. It must be possible to transform all of them into deep ponds overnight. After many years of exploration by fish farmers in Jianli County fishery, a set of shallow-pond fish breeding experience has been concluded. Now introduce the following fish farmers reference: 1. Launch large-scale fish species. The average specification is 6 grams to 7 grams per tail and the amount of mu is 1400 tails. The four home fishes are polyculture, the proportions are pupa, carp 60%, grass carp 30%, carp, carp 10%. Prior to the release of the fingerlings, use salt, bleach, etc. to disinfect. 2. Fertilize a few times more. According to different seasons, water temperature and color determine the time and quantity of fertilization. Fertilizers must be fully cooked, fertilizer must be used in combination with nitrogen, phosphorus and potassium. 3. Feed pelleted feed. According to the temperature, the temperature of the water, and the status of the fish to eat and drink, the quantity of increase and decrease is determined. Generally, the average is 35 kg to 40 kg per day. Feeding time is from 9:00 am to 10:00 pm, from 4:00 pm to 5:00 pm, and about 200 kg of green fodder will be fed per acre around 6 pm every day. 4. To adjust water quality in time, increase dissolved oxygen in water. The quality of water should be maintained to be fat, live, tender, and refreshing, both to ensure the water quality suitable for grass carp production, and to promote the growth of plankton and carp. 5. Determine the pH in water every day. If the PH value drops below 6.4, lime slurry should be spilled in a timely manner. The use of quick lime is 20 kg to 30 kg per month to make the PH value of the pool water reach 6.8-7.0. 6. Turn on oxygen. 3 acres to 4 acres of ponds can be equipped with 1 aerator. The use of aerators will not be opened sooner or later, when the fish floats, it will be opened in advance and it is forbidden to turn on the machine in the evening. 7. Pay attention to the prevention and treatment of fish diseases. To do a good job of disinfection of ponds and fingerlings, drugs are generally lime, salt, bleach, malachite green, copper sulfate and gall and so on. During the breeding process, lime slurry and bleaching solution should be splashed into the pond periodically. Strengthen management, stick to the patrol pond, and remove the leftover bait in time. Well-watered ponds should be regularly filled with fresh water. Found fish disease, it is timely diagnosis, symptomatic treatment.
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