1. Qing Tong
Clear pond is the use of drugs for disinfection, killing pathogens and predators of farmed fish. Clear pond time depends on the efficacy of the drug used, the length of the duration, the size of the toxicity, the weather, and the depth of the water level. Clear pond is too early, fish species did not arrive, the pond will appear new enemy harm; too late, the toxicity has not disappeared, easily lead to fish poisoning death. After the exposure of the pond into a small amount of water to carry out water detoxification, with about 100 kg of lime per acre, into a slurry of lime, the whole pool evenly spilled, 7 to 10 days after the disappearance of drugs, you can put the fish.
2. Qingye
The clear field is where the fingerlings pull the net out of the pool and stir the bottom mud to allow the dormant eggs and spores of various algae and plankton to reproduce early. The rotifer peak period appears in advance, allowing the fish to have palatable natural dips. 3 Identify the strength of fish species
The characteristics of a good fish species is that in the fish pond, the vortex is stirred against the water to swim by hand; the crickets are clean in the bowl, the body is well-balanced, the tail is full, the scale fins are intact, the specifications are consistent, and the swimming is lively; The surface of the water is blown, and it can swim in the top water. After pouring out the water, it is struggling violently. The head and tail can bend into a circle, and vice versa.
4. Test water
Before magnified batches of fingerlings, the pool water should be used for testing. If the test fish does not die in the pool water for 24 hours and there is no abnormal reaction, the fish can be put into the pool in large quantities.
5. Thermostat
When the difference between the water temperature in the pond and the water temperature in the container of the shipped fish species exceeds 5°C, the water temperature should be adjusted. When the temperature difference is reduced to the allowable range, the fish species can be lightly put into the pool.
6. Choose where to put the fish
Generally, it should be put in the deep water at the top of the pond to prevent the fish from being scraped to the edge of the pool or drowned.
7. Fertilization cast
After the fishes are pooled, the fermented manure should be chased regularly to keep the pool water brown or oil green. In the early stage, yellow flour and wheat husk should be properly fed, and the amount of fish fed should account for about 5% of the fish's body weight.
8. Reasonable stocking
The stocking density and proportion of fish species must be determined according to the size of the pond itself, the depth, the fatness, the water source, and the aeration setting. For example, the more pooled water should be dominated by filter-feeding fish and supplemented by omnivorous fish, and a small amount should be matched with herbivorous fish. The proportion of fish in each layer of water should be taken into consideration to achieve reasonable polyculture and make full use of water to increase production. And benefits.
9. Patrol pond
In the morning and evening, it was found that the predators of fish were cleared in time to observe the water color and the fish’s activities and feeding conditions, and to do fish disease prevention and control work.
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