Seed stocking is an important part of the production of carp culture. To do a good job of artificial breeding of carp, we should adhere to a variety of channels to solve the source of seedlings, adopt scientific breeding methods, and obtain good yields and better economic benefits.

(1) The source of the seed. At present, the source of catfish mainly depends on hunting or buying natural calves. In spring, the temperature rise is the best season to catch the fleas, and other seasons can use the habit of the jaundice to feed at night. The method of catching the seedlings is to trap and catch it by hand.

In addition, it is also a good idea to collect the fertilized eggs of Astragalus mongholicus and artificially egg culture to cultivate yellow seedlings.

(2) The quality of seedlings. Robust, disease-free and injury-free can be used as seedlings. Those trapped with hooks have a low survival rate after stocking, and even if they do not die, they grow very slowly. Therefore, it is generally not suitable for use. When catching the salmon seedlings, do not use wire hooks to injure the salmon. If purchased in the market, you cannot buy seedlings fed with saccharin or fire soup.

(3) Seed specifications. Seed specifications are generally 20 to 40 tails per kilogram. The seed of this size is neat, its viability is strong, the survival rate after stocking is high, the weight gain is fast, and the yield is high. If the specifications are too small, the food intake is poor and the weight gain is not fast. The stocking stocks should pay attention to the specifications and sizes, and the size should be the same, not too different. The seeds of different specifications should be able to be sub-potentially raised, so as to avoid competing for food and kill each other, affecting the growth and survival rate.

Astragalus and many varieties, can be roughly divided into yellow, white, blue, red, black, several kinds, of which the strongest vitality is blue, yellow two, the spine and Jin Department of yellow is also good. In order to ensure the high yield of aquaculture production, it is necessary to gradually select the best and the worst in the development of aquaculture production and cultivate and use good varieties.

(4) Stocking time and stocking density. Restocking time is early, and it is better to stockseed the first batch of Astragalus species caught in early spring. After wintering, the scutellaria baicalensis is able to maintain its life only after its wintering. After the spring, it requires a lot of food intake, and it has a large food intake and a wide diet. Therefore, it is necessary to put seedlings as early as possible, to facilitate domestication, to eat early, and to extend the growth period.

The stocking density varies with the size of the pond, the source of the feed, the seed size, and the feeding and management. Artificially cultivated Astragalus membranaceus, the stocking densities can be slightly larger, with 100-150 tails of 25-gram pups stocked per square meter, ie, 2.5 to 4 kg per square metre of young pups. The specifications for stocking are larger and the density can be reduced accordingly. On the contrary, it can be increased accordingly. If there is enough food, you can put more. Family farming generally uses 2.5 kg per square meter of stocking, and the pool can be stocked with some loach.

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