In Zengcheng area, a group of low-yielding fish ponds are refurbished each year in the autumn and winter. Some are rectified but are left unused until the spring of next spring. This will waste time and waste pond resources. In fact, catching ponds in stocking in winter, staggering the season, adjusting varieties, and mentioning the morning market time, can achieve high yields and better economic returns. So how do you do a good job of pond winter fish breeding? The author believes that one must focus on early release, the other on large specifications, and the third on daily management. This is crucial and cannot be ignored. The small size of spring fish, and low survival rate, is one of the fundamental reasons for the low yield of pond fish. Specific measures are as follows: First, the winter fish species should be caught in early fishery production for a year in winter. As the saying goes: "When a person misunderstood, the water mistakes one year." The conventional conventional pond fish is generally selected for spring and spring, before and after the Qingming species. In winter, it is better to choose winter and early spring, and the winter festival from before winter to rain is the best festival for the breeding of fingerlings. The so-called â€œwax water stocking, fish species is swift.â€ Because the temperature is low during this period, the water quality Stability, weak bacterial reproduction, fish body, scales compact, easy to operate, easy to injury, low rate of disease. Therefore, it is better not to delay the winter fish species in ponds. A week after the pond was exposed, the pond was immediately flooded with 1 meter deep, 100-150 kilograms of fresh lime was used, and 50 kilograms of raw tea bran (wrapped and soaked in the whole pond for 24 hours) was sprayed. 300-400 kg of water; quicklime neutralizes acidity, improves substrate, releases nutrients; tea bran kills wild fish and eggs in water, and cultivating water quality is also a favorite food for fish species; human and animal manure breeding water plankton, to filter Dietary fish provide a rich diet. About 10 days after the fish species can be put on aquaculture (test fish can be put first, test water fish born and shoved within 24 hours, indicating that the toxicity of the pool water disappears, you can put 4% salt water for surface disinfection of fish species falling pond). After several days, the pond water level was gradually increased to a normal level of 1.5 meters or more. Winter fish species can achieve early survival, early growth, early weight gain, morning market, early profit, after years of practice has proved that it can increase economic efficiency by 40%-50%. Second, the winter fish species must catch large-scale high-yield fish ponds must be put in large-size fish species. Under normal conditions, the large-scale species of fish to be laid have a high survival rate, rapid growth, short cycle times, and low cost, and they can achieve commercial fish specifications earlier in the year, and have a decisive effect on fish pond production in the next 1-2 years. The survival rate of fish species below 10 cm is very low, and the survival rate of fish species above 14 cm is as high as 90%. Implementing the model intensive culture, the semi-precision fishpond with a yield of 250 kg will be fed with 600-700 large species of fish, weighing over 15 kg, and the intensive breeding pond with an acre yield of 400 kg will be delivered with 1200-1400 tails of large species. The weight is 100- 120 kilograms; 500 kilograms of fine intensive ponds, with 2,500 large fish species weighing 150-170 kilograms. Third, do a good job in the daily management of pond aquaculture As the saying goes: â€œPut fish first to maintain water, water is good half pond fish.â€ The daily management work mainly refers to water quality management, timely and reasonable feeding, fish disease prevention, safe wintering and so on. Due to drought in winter and spring, the pond should be deep-buried in time, generally requiring the water level to be more than 2 meters, increasing the amount of dissolved oxygen to dilute the poisons. The deeper the water level, the higher the water temperature, which is more conducive to the safety of the fish for winter; at the same time, it is necessary to apply reasonable fertilization, about 15 -20-day-fermentation of 200 kg of fermented livestock manure water, or 2 kg of urea and 5 kg of phosphate fertilizer, to cultivate rich plankton so that the water body can maintain a good fatness; when the water temperature is above 10Â°C, On sunny days, 2-3 pm, depending on the weight of the fish, feed 1%-1.5%, which can be fish pellet feed, or mix of peanut bran, wheat bran, corn husk, bean cake, and so on. Complementary nutrition, enhance the physical fitness of fish, improve the ability of cold resistance, the main prevention of fish disease regularly use 20g of lime or bleaching powder 1ppm of water Quanchiposa, regulate and improve water quality and kill bacteria weakening activities, if there is parasite 0.7 Dissolved in dissolved water of ppm sulfur copper and ferrous sulfate mixture (5:2), mixed and splashed, culling fish body surface and water parasites to facilitate the healthy growth of fish. The above work is done well and you can safely go through winter. Transfer to the spring for normal breeding management.
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