Two key techniques for high and stable yield of Pelteobagrus fulvidraco-patient and fishing

In artificial culture of Pelteobagrus fulvidraco, two key technical measures for high and stable yield should be taken-- disease prevention and daily fishing.

Pelteobagrus fulvidraco (Pelteobagrus fulvidraco, yellow bud head, yellow croaker, yellow buckfish, yellow buckfish, male and yellow bone fish, etc., is a small freshwater economic fish and a famous special species. To cultivate Pelteobagrus fulvidraco, the key work is to control the diseases and insect pests of Pelteobagrus fulvidraco. In order to improve the labor productivity and output per unit area of Pelteobagrus fulvidraco, it is necessary to release seedlings into fish ponds in batches and at the same time, we should constantly catch Pelteobagrus fulvidraco from fish ponds and put them on the market. Because Pelteobagrus fulvidraco itself does not grow up, it puts seedlings into fish ponds in stages and batches, and then goes on the market from fish ponds in stages and batches. One mu of fish ponds can be used as 5 mu of fish ponds, catching large and staying small, and can be harvested countless times a year.

First, two kinds of cleaning and disinfection of the pond in winter (1) dry pond cleaning: drain the pond water first, or leave water 6cm ~ 9cm, emulsify with 75kg ~ 100kg of quicklime per mu, and sprinkle it evenly all over the pond without cooling. After clearing the pond, the drug power generally disappears after 7 ~ 10 days, and the fish can be released. (2) bleach cleaning pond: general bleach contains about 30% available chlorine, its dosage is 15 kg per mu, sprinkled all over the pool. Generally, the drug power disappeared completely after 4 ~ 5 days.

2. The seedlings should be soaked in 5% salt water for 10 minutes before putting the seedlings into the pond.

Third, water quality management insists on observing algae phase and algae concentration in water bodies. According to the water color, use inorganic fertilizers (urea, calcium superphosphate, potassium dihydrogen phosphate, etc.) to adjust the water fertility and keep the transparency at 30 cm ~ 35 cm. The aerator is used scientifically according to the determination of dissolved oxygen and the weather and water quality.

Fourth, commonly used drug prevention and control (1) insecticide: enemy kill. According to the concentration of 0.03ppm per cubic body of water, sprinkle the whole pool or sprinkle with the concentration ratio of copper sulfate: ferrous sulfate = 0.15 ∶ 0.05ppm. The above insecticides have good insecticidal effect on ring worm, rotifer and so on, but the two drugs can only be used alone, not mixed or used alternately, let alone overdose. (2) Antibacterial and anti-inflammatory agents: oral medicine (mixed evenly into granules in the feed) sulfamethazine tablets, 15 ~ 20 grams per 50 kg diet for 3 days, twice a day or 10 grams of dysentery plus 20 grams of oxytetracycline mixed well into 50 kilograms of food, 3 days in a row, twice a day; oral penicillin capsules can also be used to feed (5 grams) for 3 days, twice a day. Disinfect the fish: dilute and soak the fish with 0.25% bleaching powder or penicillin powder for 10 minutes. The above oral ingredients are best fed now, once for 3 days. Mainly for diseased fish infected by bacteria. (3) treatment of hemorrhagic disease: 50 kg of raw salt per mu was sprinkled throughout the pond, and 100 grams of sulfathiazole and 10 grams of vitamin C were evenly mixed in every 50 kg of bait, fed twice a day for 3 days. In the process of preventing and controlling the disease of Pelteobagrus fulvidraco, it is generally said that trichlorfon is refused to be used to kill insects.

Fifth, scientific fishing in the past, farmed Pelteobagrus fulvidraco is usually very difficult to catch. Usually wait until winter, drain the pond water and catch it on the market, harvesting once a year. At present, the most scientific, simple and advanced fishing method for farmed Pelteobagrus fulvidraco in China is to catch Pelteobagrus fulvidraco by magic fishing machine. During the operation of the magic yellow catcher, artificial electrical signals are sent out in the water body, and the artificial electrical signals are used to control the nervous system of Pelteobagrus fulvidraco, which turns the yellow catfish into a "robot" animal. Specifically, the magic fishing machine produces regular electrical signal coding, which is applied to the specific functional nerve nuclei of Pelteobagrus fulvidraco through the conductors of water. so that the yellow croaker can rush out of the water under the control of the nerve nucleus. Pelteobagrus fulvidraco can make a "quack, quack, quack" sound, but other fish do not have this special function. The specific artificial electrical signals emitted by the body of the magic yellow catcher can only control the yellow catfish that make a "quack, quack, quack" sound. Generally speaking, Pelteobagrus fulvidraco can be caught by a magic fishing machine, which can catch hundreds or even thousands of kilograms of Pelteobagrus fulvidraco a day. But it is ineffective to catch any other fish. Using the magic fishing machine to catch Pelteobagrus fulvidraco in the fish pond can not only ensure that the fresh Pelteobagrus fulvidraco is caught on the market selectively and quantitatively from the Pelteobagrus fulvidraco pond every day, but also ensure that the catch is large and small, and it has no damage to the fish in the pond.