For the conditions of herring culture, scientific feeding is the key after site selection and pond construction, and attention should be paid to the regulation of water quality.

Fish pond: choose good water quality place to build fish pond. Selection of seedlings: It is advisable to select healthy and symmetrical, lively and active fry, and disinfect the fry before putting them into operation. Bait: scientific proportion bait, do not put excessive lead to water pollution. Feeding: fixed point timing reasonable feeding. Water quality: cloudy days, rainy season and summer to fish pond oxygenation. Water change: small drainage and small intake regularly change water for fish ponds, and disinfect them with quicklime every other month.

1. Fish pond construction

Culturing black carp should choose the place with good water quality, sufficient water circulation and water quality with breeding standard conditions. Pond setting also requires smooth irrigation and drainage, good ecological environment, no pollution and abundant feed resources under the conditions. The cultivation area is about 20 mu, the water depth is about 2.3 m, the sludge thickness in the pond is preferably controlled at about 20cm, and an oxygen machine and a feeder are required for every ten mu.

In winter, it is necessary to drain the water in the pool, dry it for about 20 days, inject 20cm of water for disinfection, sprinkle quicklime water, wait for the water quality to be completely dissolved, and then add water to feed the fish.

2. Seedling selection and breeding

In the selection of herring fry, it is best to choose healthy symmetry, lively and active fry, these fry development ability and physique are better, stronger. Note that if the fish species introduced from outside need to be inspected and disinfected before they can be put into the pond for free cultivation. Chlorine dioxide can be used for disinfection treatment, potassium permanganate can also be used about 20 mg, generally about 30 minutes can be disinfected, or salt can be soaked for about 20 minutes can also be disinfected, the final release can be according to the ratio of 8:2 can be put into fish species.

3. Scientific matching bait

The herring generally feeds on edible aquatic plants and active organisms in the water area. When artificially breeding, we need to reasonably adopt scientific ingredients of bait to improve the conversion rate of herring feed. Do not put a large amount of food into the pond and cause food to accumulate at the bottom of the pond, resulting in decay and deterioration, thus affecting the water quality. When setting up fish ponds, in order to reduce the feeding cost, we can add a certain amount of fish grass powder, which can not only meet the special requirements of black carp for black carp fiber, but also help the healthy and rapid growth of black carp.

4. Reasonable feeding

In order to facilitate the herring to eat, we need to crush and soak the bait, polish it all and feed it again, so as to promote the digestion of herring. Reasonable feeding, feeding we need to regularly fixed-point feeding, generally three times a day can be, but also according to the eating situation to control the increase and decrease of feeding amount, can not suddenly control the amount of black carp, daily increase control at about 10%, reduce control at about 5%, but also pay attention to feeding bait can not be moldy rotten expired bait.

5. Water quality management

In the breeding process, we can use oxygen machine for water quality management, generally in June to November, cloudy days and rainy season in the early morning oxygen, when the sun temperature is high, in the afternoon of about 1-3 o 'clock every day oxygen, about two hours.

6, regular water change disinfection

In order to control the freshness of the water quality, new water is regularly injected into the pond, and the method is carried out in a small way. Generally, new water is injected in three days, each time the amount of water is about 10cm, and quicklime is used for disinfection every other month. After about 20 kg of quicklime is dissolved in water, it can be sprinkled.