Freshwater whitefish summer flower cultivation method


Freshwater white breams are kept for 20 days. The total length is about 3 cm. It is called summer fish. The key cultivation techniques at this stage are as follows:
I. Selection of Ponds Ponds should be rich in water resources, good water quality and pollution-free, with good lighting, easy access to drainage, a ratio of length to width of 3:2, a size of 2 acres to 3.5 acres, pool depth of 2 meters, and sediment quality. The soil is good.
Second, pond clearing
1. The gate of the pond trimming pond should be firm, take out too much silt at the bottom of the pond, and keep a mud of 5 cm to 10 cm thick, which is conducive to the cultivation of food organisms.
2. The ponds are sterilized with 50kg to 60kg of lime per acre. They are splashed on a sunny day at noon, 7 days to 10 days after the seedlings are injected, or the whole pool is splashed with 20ppm bleach, and the seedlings are injected 3 days to 4 days later.
Third, stocking density: 300,000 to 400,000 tails per mu. For safety reasons, test fish before putting it on seedlings. When the water is released, the transparency of the water is controlled between 40 cm and 50 cm to prevent the large leeches in the pool from stabbing the delicate fry. Before the seedlings are released, weather conditions within a few days are estimated to have a great influence on the survival rate of seedlings. Choose sunny day from 7 to 8 o'clock in the morning, first place the bag of oxygenated oxygen in water and soak for 30 minutes. Pour down the seedlings in the windward position of the pond, poke the water surface, and then pull the bag angle backwards so that the fry is evenly distributed in the water. .
IV. Feeding Technique After the seedlings are released for 3 hours to 4 hours, they can be fed. For every 100,000 fry, feed 6 egg yolks per day and 250 g of quail feed. The yolk needs to be filtered through a 40 mesh screen. Generally, 5 times to 6 times per day, the bait is evenly spilled along the edge of the pool, requiring less time and more. After 10 days, it is converted into soybean milk, and the daily feeding amount is adjusted every 5 days. In addition, it should be increased or decreased according to the weather, water temperature, and water quality.
Fifth, the water level control has just started at a water level of 50 centimeters. Afterwards, it adds 20 centimeters to 30 centimeters every 5 days to 6 days until it reaches 1.5 meters deep.
6. The patrol ponds in the early, middle and evening hours of the patrol pond once had frog eggs and debris removed in time. Observe the degree of floating head of the fish and use it as a basis for feeding and adding water. Open the aerator for 1 hour to 2 hours at noon on a sunny day. In the evening, observe if there is a sign of fish disease.
7. After 20 days of training for fry training, you must exercise 2 to 3 times before leaving the pool. Selecting the sunny hours from 9:00 am to 10:00 pm, the action during the network gathering should be light, fast, and short; after the network time is properly extended, the immortal fish should prevail, and its purpose is to enhance the fish body constitution.
VIII. Prevention and treatment of fish diseases is mainly prevention, and the principle of early disease prevention is the principle.
Candidiasis can be used 0.1ppm ~ 0.2ppm mercury nitrate Quanchiposa, preferably 0.13ppm ~ 0.15ppm, or formalin 25ppm ~ 30ppm Quanchiposa, once a day, 2 times in a row. The disease is strictly prohibited with copper sulfate treatment.
The trichodinosis was splashed with 0.7ppm ferrous sulfate mixture, once a day, twice a day.
Algae use potassium permanganate 2ppm ~ 4ppm, Quanchiposa, once a day, once again every other day.
Ascites disease 1ppm bleaching powder (effective chlorine content of more than 25%) Quanchiposa, combined with drug service, with 0.3% oxytetracycline and 0.1% furazolidone feeding bait, for 5 days to 6 days.
In addition, the larvae of otters and clams are the predator creatures of the fish, and they can spray 0.5 kilograms of diesel oil per acre to drive them out. This works well.

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