pond cleaning and disinfection: dredge the irrigation and drainage channels of the pond and clean up the silt; Sterilize the mu with 2 kg of quicklime, keep the water 2m deep, clean it up after 1 week and there is no drug residue, and then release the fish. Maintain water quality: Too many aquatic plants and algae in the pond will lead to the deterioration of water quality and air, so it needs to be cleaned regularly. Disease prevention: Sprinkle 2kg of lime every half month in high temperature period, and spray with 25g of 9% crystal trichlorfon in water to prevent diseases.

methods and skills of pond culture

1. pond cleaning and disinfection

(1) dredge irrigation and drainage channels and clean up the mud in the pond, leaving only 2cm of mud.

(2) The pond was disinfected with 2 kg of quicklime to kill pests, germs and microorganisms, and the water was kept at a depth of 2m. After a week, the pond was cleaned and there was no pesticide residue, so fish could be cultured.

2. Maintain water quality

(1) When there are too many aquatic plants in the pond, the air in the pond will be poor, and some substances will also affect the water quality of the pond after rotting, while some algae will emit harmful substances, pollute the water source, make the water sour and lead to the water quality aging, so it is necessary to clean the aquatic plants or algae to maintain the water quality.

(2) A small amount of duckweed can shade, but too much duckweed will affect the reproduction of fish, and duckweed grows fast, so it needs to be cleaned regularly.

3, disease prevention

(1) Because fish are prone to get sick in hot summer and autumn when the temperature is high and low, in the high temperature period, 2 kg of lime is sprinkled every half month, and 25g of 9% crystal trichlorfon is sprayed with water.

(2) Fish feed needs to be disinfected with copper sulfate, and feeding utensils should be cleaned with bleach. When gastrointestinal diseases are prevalent, the feed can be fed together with garlic.

4. Pond environment

(1) The pond area is too large to be managed. It is suggested that the pond is about 5 mu wide and 2m deep to facilitate drainage or water exchange.

(2) When using slightly alkaline sandy soil, the water quality should be 3cm deep.

second, the technology of blooming Thai bream in fish ponds in summer

1. Bait formula

(1) The taste of Thai bream is

Thai bream likes sweet and slightly sour taste, so the prepared bait is sweet and sour.

(2) Formula 1

① First, boil 8% refined flour or corn flour with boiling water, then mix with 2% rapeseed cake (which can be replaced by soybean flour) and add a small amount of honey and sweet distiller's grains.

② Then put the bait into a container, seal it, and let it ferment in the sun for 2-3 days.

③ When using, a small amount of rapeseed oil or sesame oil should be added to make it into a bait ball with moderate hardness, so that the bait has a strong oily flavor and a slightly sour taste.

④ note: the flour used in the bait must be sticky flour, because the flour is sticky, the Thai catfish can't eat up the bait easily, leaving the residual bait on the hook, and then the Thai catfish will eat the residual bait together with the hook.

(3) Formula II

① First, prepare 4% corn flour, 2% refined flour, 1% peanut bran and 2% raw sweet potato (mashed).

② Next, cook 5% corn flour and 5% refined flour into paste, and put other raw materials in a large basin, then pour the cooked batter into the basin while it is hot and stir.

③ After the temperature drops below 5℃, add the sweet distiller's grains (1kg raw material is 1 packet of sweet distiller's grains) and package them in plastic bags.

④ then ferment the bait for 36 hours before use.

(4) Precautions

① When fermenting the bait, we should pay attention to the fermentation time, and it is not advisable to ferment for too long, because excessive fermentation will lead to the acidity of the bait, and it is difficult for the Thai catfish to bite.

② In late spring and early summer, Thaddeus macrocephalus has a strong appetite and likes to eat earthworms or river shrimps, especially live earthworms, so live earthworms can be used as bait when fishing.

2. Fishing tackle selection

(1)4.5-6.3m hand pole, No.3-4 main line, No.1.5-2 sub line, No.8-1 Yi Shi Ni hook or No.9-12 Izu hook, and No.2-5 hard tail vertical mark.

(2) Generally speaking, the fishing method of platform fishing is suitable for fishing Thai shad with hand pole.

3. Fishing skills

(1) Fishing time

Thai catfish has a weak appetite in sultry weather and at noon, and seeks bait frequently in rainy days and in the morning and evening, so it chooses to go fishing in rainy days in summer and autumn, and usually chooses to fish early or late.

(2) Shallow fishing and deep fishing

Thalichthys nobilis has a strong warming habit. It will go to shallow water to find food in hot weather and at noon in summer and autumn, and enter deep water in rainy days and in the morning and evening, so it is advisable to fish shallow in hot weather and at noon, and deep in rainy days and in the morning and evening.

(3) Bait

Thai shad eats a lot, and there are other fish competing for food, so the nest must be big and full, and the bait should be a combination of large peanut bran cakes and granular bait.

(4) Bait formula

① Firstly, the peanut bran cake is decomposed into palm-sized pieces, and a few drops of koji are dropped one night before fishing and sealed with a clean plastic bag. When fishing the next day, 4-5 pieces are put into each selected fishing spot as the main bait, and the auxiliary baits are fried peanut bran powder, soybean powder and distiller's grains. After mixing, they are soaked in water and kneaded into fist-sized pieces and thrown into the den, and 3-4 balls are put into each time.

② When fishing, red earthworm can be used as bait, and it is appropriate to hook the whole living body.

(5) commercial bait

① Formula 1: 2 portions of the catfish king+1 portion of the old ghost crucian carp bait+3g of egg milk+4g of strawberry fragrance.

② Formula 2: 2 portions of Dactyl King+1 portion of sweet potato powder+2 portions of peanut bran+1/2 wire drawing powder+4g of strawberry fragrance.

(6) The characteristics of Thai catfish biting hook

① Thai catfish biting hook is more cautious, calmer and less fierce than that of wheat catfish.

(3) After the Thai bream bites the hook, the buoy starts to move slowly, and then gradually submerges in the water. Usually, when the pole is lifted in the process of black marking, it can basically catch fish.

(7) Precautions

When small fish are caught, whether it is self-made bait or commercial bait, the fishy smell of the bait should be reduced to avoid the situation that Thai catfish can't get close because other fish flock into the nest.