The medium and small-scale reservoir drought-resisting fishery technology is characterized by the fact that small and medium-sized reservoirs have plenty of water storage capacity in the first half of the year, and have a wide range of farmed fish activities, and have a rapid growth rate. They are used to transfer fish breeding techniques in ponds to fish breeding technology and pollution-free culture techniques. To reservoirs, put large-scale high-quality fish species, scientific breeding, and ecological prevention and treatment of fish diseases, so that some farmed fish will reach the market specifications before August, carry out rounds of catching and catching, catch large quantities of fish, keep a balanced market, and keep the reservoir water scientific and reasonable. The amount of fish loaded will achieve the goal of high yield and high efficiency in fishery production. Its main advantages are as follows: Firstly, it scientifically solves the contradiction between irrigation drought for small and medium-sized reservoirs and aquaculture, and secondly, the balanced and vigorous growth rate of farmed fish throughout the year increases the utilization rate of bait. Third, balanced supply of aquatic products. The market has high prices and good returns. Fourth, it shortens the cycle of production capital circulation and reduces production risks. The technical points for the implementation of anti-drought fishery production in small and medium-sized reservoirs are described below for reference. I. Selection of Reservoir Conditions Small and medium-sized reservoirs have a long duration of light, rich in calorific resources, abundant water resources, and fresh water without pollution, which is in line with national water standards for fishery students. The reservoir is easily accessible and the logistics is smooth. It is advisable to build a pig barn or a duck canopy and build a methane tank. Second, anti-escape facilities to build a barred fish facilities to prevent fish escape, fish facilities can be used nylon nets, bamboo shoots, barbed wire, reinforced bar grid and other construction, its mesh or spacing depending on the size of fish species may be. Third, clearing the field in combination with clearinghouse, disinfecting the reservoir, disinfectant drugs generally use quicklime or tea dry, quicklime dosage of 600kg/ha, sprinkling water in the bottom sludge and organic accumulation; tea dry disinfection can not be completely Drain the reservoir, the amount of water area is more than 300kg/ha, the tea withered and then soaked in water for 12 hours, even the slag with juice splashed in the reservoir water. In the reservoir aquaculture production process, the following methods can also be used to clear the wild fish. One is to stock 225 fish tails or squid, or 450 tail fish, when they are stocked; the second is to use a small mesh gill net to catch small wild fish. Fourth, the fish stocking stocking requirements of disease-free without injury, physical fitness, in line with ministerial or industry standards. Fish species should be disinfected before stocking. Soak the fish species with 5% salt water for 5 minutes to 10 minutes. All grass carp species should be vaccinated. Before releasing the fish species before the end of January, the stocking mode can be either primary or monoculture. . Fifth, water quality management and fertilization. Fertilizer fish fish-based reservoir, should do a good job fertilizing the water quality work, first of all, to apply base fertilizer, after the reservoir disinfection in addition to the wild, the base fertilizer is applied. Exercising organic manure such as swine manure, cow dung, chicken manure, and duck dung that have been fully decomposed and fermented to ensure that the transparency of the water body is less than 30cm to 35cm when the species is in the stockpile; followed by timely topdressing, which is usually applied twice or three times per month. Decomposed pig manure or other organic fertilizers keep the water quality fat, live, tender, and cool, and plankton is abundant. Third, the whole library is splashed with lime water from 150 kg to 225 kg per day, once or twice a month. Sixth, feeding bait to eat fish as the main reservoir of fish, three days after the fish stocks, it should start feeding, generally using pellet feed, feed must follow the "four set" principle: First, positioning, The fixed position, set up the food platform; Second, timing, to vote every day, the afternoon is appropriate; third is the quality, keep the feed quality and fresh; Fourth, quantitative, how much to feed, depending on the season, weather, water quality and fish According to feeding conditions, in general, when the water temperature is below 23°C, the daily feeding amount is 1.5%~2% of the weight of the eating fish. When the water temperature is above 23°C, the feeding amount increases to 2%~ 3%. VII. Ecological Disease Prevention and Control The ecological disease prevention is based on ecological principles to create a healthy environment for the growth of fish, and an integrated disease prevention method for transforming cultivation methods. Production often takes the following measures: First, the scientific application of fermented organic fertilizer, reasonable adjustment of water quality, increase dissolved oxygen, keep water quality fertilizer, live, tender, cool; Second, adjust the culture structure, eliminate residual bait, stocking squid, squid, etc. Carnivorous fish, clearing the diseased fish with stunted activity in wild fish and water bodies, reducing the spread of disease; third, correcting the production cycle, implementing round catches, keeping the amount of fish in the water body reasonable, and avoiding development Peak period. At the same time, adhere to the daily inspection of the reservoir, find fish disease, timely treatment, and prescribe the right medicine. VIII. Routine management First, persist in daily inspection of the fish stocks, observe the fish activity, observe the fish eating conditions, observe whether the fish have symptoms, find abnormal conditions, and take timely measures; second, do a good job of reservoir water environmental sanitation, remove Miscellaneous objects, etc. The third is to regularly inspect the reservoir to prevent fish from escaping and to prevent the escape of farmed fish. Especially during the flood season, there must be special care for the fish stopping facilities at the spillway, etc. Fourthly, records should be made in the production process. Fish stocking, feeding, fertilizing, catching, watering, and economic accounting records. Nine, fishing mainly uses the “Barge, Catch, Thorn, and Zhang†joint fishing method to block fish with a net, gradually narrow the fishing surface, use a gill net to catch fish and thorn fishing, and use a net to load fish to achieve Once to catch a large number of fish products.
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