First, pond nursery conditions:
Cultivation of summer fish fry ponds, rich water, pond area of ​​1-2 mu is appropriate, water depth of 1-1.5 meters, the pond shape is best from east to west, the drainage equipment entered is complete, the bottom of the pool is flat, the pool is firm, strong and watertight.
Second, put summer flower seedling preparation:
The fish ponds should be cleaned and disinfected 15-20 days before the lower ponds, preferably on sunny days. The pond water should be drained to remove silt and weeds. Ichiban disinfection available lime, tea seed cake, bleach and so on.
Lime disinfection: Use 75 kg of ash per acre pond, and 8-10 cm shallow water at the bottom of the pool. Add lime to the threshing bucket and dissolve it evenly. The next day, if any wild fish that have been killed must be fished, Dilutes the silt in the bottom of the pool to improve the disinfection efficiency. For some ponds that are difficult to drain, or to drain fish ponds without water sources, the depth of water is 1 meter, and 90-100 kg of tea cake per acre is used. After the water is evenly mixed in the same way, it is splashed. After 7-10 days of clear ponds in this method, use live fish in a small cage to test the water in the pond. After pond toxicity, the fry can be released.
Tea cake “clear pondâ€: Because the tea seed cake contains saponin, it is toxic to wild fish, aquatic insects and snails, but it has no effect on pathogen bacteria. Use method is:
The tea seed cake is smashed first and then soaked in warm water for 24 hours before adding even water. Sprinkle the whole pool and disinfect with shallow water. Use 25-30 kilograms for every 1 mu. For example, use a tea seed cake with a depth of 1 meter per acre. - 100 kg, clear fish pond can be put in 10 days.
Bleached clear pond: The bleached powder contains about 30% of available chlorine. After adding water, it is decomposed into hypochlorous acid and calcium chloride. The initial ecological oxygen is released from the decomposition of hypochlorite, which has a strong antivirus effect. Water depth of 1 meter in the pond, per acre with bleaching powder 12.5-15 kilograms plus water dissolving, stir evenly, sprinkling the whole pool, 5 days after the clear pond can be put fry.
Can also be per cubic meter of water body with 2 grams of rattan fines diluted with water, sprinkling the whole pool, 7-8 days of drug can be released fry. Then add the appropriate amount of fresh water, fish feed, per kilogram of fermented pig cow dung 75 kg.
Third, put fry:
Summer fish fry physical weakness, fish pond water level should be shallow (about 30-50 cm) can put about 100,000 per mu. Frying time is best to choose the sunny morning, when the wind should be placed in the wind upwind seedlings, because the summer flower is weak, transport and seedlings should be very careful operation, field purchase summer flowers, to reach their destination, to install the summer Put plastic bags into the pond and soak for about 20 minutes until the water temperature inside the bags is almost the same as that in the pond. Slowly turn the plastic bags into the fish fry.
Fourth, feeding and management:
During the first week of the fry in the pond, they are fed twice a day with soybean milk, which is 8-9 am and 3-4 pm respectively. Each kilogram of soybeans is soaked with 2 kilograms of soybeans into 20-30 kilograms of soybean milk, and evenly sprinkled around the pond. After one week, the soybean meal or peanut cake can be fed into the water and soaked in a suitable amount. The water quality can be adjusted according to the pond water quality. How much plankton, appropriate application of organic fertilizer. At the same time pay attention to 3-5 days into a new water, each time to increase the water level 10 cm, and gradually reach 1 meter depth, transparency 20-30 cm.
Fifth, adhere to early, middle and late patrol ponds:
Good management is the key to improving the survival rate of fish fry. It insists on patrolling the ponds three times a day in the morning, the middle and the evening, observing fish feeding activities and pond water quality changes, and finding and resolving problems in time. Feeding on a sunny day can make the fish fry eat 80% full, if the rainy days should reduce the amount of feeding, eat 50% full, do not feed the next heavy rain. Note: Remove frog eggs and fish predators, water snakes, and wild fish from the fish pond.
Sixth, the emergence of nets exercise fish:
Before the emergence of 2-3 times to pull the net exercise, grow to about 3 cm, you can sell. When the summer flowers are transported for a long distance, the fry should be kept in the cage for 3 to 5 hours to discharge the excrement in the body to prevent the pollution of the fish body to ensure the survival rate of the fry.
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