In order to fully utilize the potential of pond farming, increase yield, and improve economic efficiency, a 36-mu aquaculture pond was managed from April 2005 to February 2006. The average yield reached 3,700 kg per mu, with a profit of 12,000 yuan per mu. This project achieved excellent results, and the following high-yield aquaculture techniques are now shared for reference.
First, the original pond was divided into two separate sections. A loader was used to remove mud from the bottom, deepening the pond to increase water storage capacity, allowing an average depth of 1.8 meters. A total of more than 500 meters of 60 cm by 80 cm three-dimensional light ditches were built, enabling direct water flow into the fish pond. A mesh fence was installed around the perimeter to prevent theft and protect the fish.
Second, the pond was equipped with essential hardware facilities, including a 3kW power generator, six aerators, and three automatic feeders, ensuring efficient operation and management.
Third, preparations before stocking included disinfection. About 15–20 days before introducing seedlings, the pond was drained, and quicklime (80–100 grams per square meter) was spread on the ground. After refilling the water to 20–30 cm, the bottom mud was stirred with a rake to ensure thorough disinfection before introducing the fish fry.
Fourth, after 7–8 days of water quality cultivation, the water clarity reached 20–30 cm, turning yellow-green or yellow-brown, indicating sufficient natural bait in the pond. At this point, the seedlings could be introduced.
Fifth, on April 8, 2005, 3.2 million fish were released, followed by 45,000 tilapia a week later. By early May, 2,400 carp with a weight of 0.1 kg each were added to the pond.
Sixth, daily management involved 24-hour monitoring. Regular checks were conducted on drainage systems, obstructions were removed promptly, and water flow was maintained. The amount of leftover feed was checked to adjust feeding quantities, and oxygen levels were monitored to avoid depletion, especially during the evening and night. Any sick or dead fish were removed immediately, and appropriate measures were taken for disease control.
Feeding followed the "four rules": timing, quality, quantity, and location. Feed quality was strictly controlled, and portions were adjusted based on the fish’s eating behavior to avoid waste and water pollution. Feeding locations remained consistent to maintain routine.
Seventh, fish were sold according to their growth stage. Large fish were harvested regularly to maintain optimal density in the pond.
Eighth, feed was self-made using a custom formula, with a protein content of 32%. The daily feeding rate was between 3% and 5% of the fish's body weight, depending on weather conditions and feeding time. Automatic feeders were used for even distribution.
Ninth, disease prevention focused on proactive measures. Water bodies were disinfected periodically, starting 30 days after stocking, then every 15 days, and finally every 20 days. Disinfectants such as bromine compounds, chlorhexidine, dibromohydantoin, chlorine dioxide, and potassium permanganate were used. Additionally, vitamin C and E were regularly added to the feed to enhance immunity.
Tenth, the cost analysis showed that the total investment was approximately 699,000 yuan, including fish fry, feed, labor, and depreciation. The total revenue from sales reached 1.138 million yuan, resulting in a net profit of 439,000 yuan, or 12,000 yuan per mu.
Finally, the success of this project can be attributed to four key factors: adequate water supply, scientifically formulated feed, effective management, and complete infrastructure. These practices ensured high and stable production of fingerlings, proving the effectiveness of modern aquaculture techniques.
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