Xiang Yunkai is a triploid type of new fish developed by the scientific research group led by Professor Liu Xi, a professor at Hunan Normal University. He has his own complete infertility, fast growth, wide appetite, strong disease resistance, and low oxygen tolerance. Low temperature, easy to catch and other good traits. The largest growing individuals in the year were up to 0.5 kg, which is suitable for breeding in ponds, lakes, reservoirs, rice fields and cages. Since 1998, the author has been engaged in the promotion of seedling breeding and adult fish breeding in Xiangyun, and has explored a set of effective breeding techniques, which are summarized as follows:

1. Select the rectangular pond from east to west, open around, and have less silt on the bottom of the pool, covering an area of ​​8 acres to 10 acres/mouth, and a depth of 2 meters.

2. Adequate water supply The water quality is good, and it can be filled with energy and can be discharged independently. It is best to be located on the sides of the river bed or in the pond below the reservoir.

3. Choose the fish species with strong physique, no disease and no injury, well-proportioned fish, winter seeds or spring slices of 50 g -80 g/tail, stocking at the beginning of the year to avoid summer flowers, otherwise the speed is too slow.

4. The stocking time should be early stocking, it is best to stock up before the Spring Festival. Adapt to living environment as early as possible, eat as early as possible and grow early.

5. Stocking scale Xiangyun Cockroach as the main fish rearing 1,000 to 1200 tails per acre, with 鲢鳙150 tails/acre. Xiangyun wolfberry not only has both feeding and eating, but also has filter feeding. The squid should not be used with too much, otherwise it will affect the growth of the main fish. The breeding stock of Xiangyunyao is too large to meet the market specifications within a certain period of time. Too little stocking is not conducive to tame food and affect the yield. Xiangyun crickets are vulnerable to fright. During the breeding process, they should not use grass, quail and other fish that have strong ability to catch food, so as not to affect the feeding and growth of the main fish.

6. Feed feed should be selected with pellet feed, avoiding roughage. Feeding wheat bran, vegetable bran and other coarse materials can easily result in waste and cause pollution to the water. Concentrate should be fresh, crude protein more than 30%. Feeding strictly adheres to the principle of "Four Sets," and after fish ponds have to be tamed about one week or so, they should have a "slow-fast-slow" and "less-more-less" approach in feeding. The feed of C. yunnanensis has the characteristics of fast food catching, large area, and short time. Therefore, depending on the water temperature and weather conditions, the feeding frequency and the feeding area can be appropriately increased. When fed, duckweed and water hyacinth are added to increase the intake of vitamins by the fish. The breeding effect will be better.

7. Control of water quality Xiang Yun and both filter and feed enforcement. Therefore, breeding Xiangyun wolfberry not only need to feed, but also to maintain a certain degree of water body, requiring water transparency of 20 cm -40 cm. Below 20 centimeters, some old water must be drained and new water should be added. At the same time, the oxygen aerator should be moved separately for about 2 hours at noon to ensure that the dissolved oxygen in the water is more than 3 mg/l. Above 40 cm, fertilizers need to be applied to increase water body fat.

8. Prevention of Diseases of Fish Carp Carassius auratus is highly resistant to disease and fish diseases rarely occur. In order to ensure that in case of high-temperature growth season, 30kg -50kg of quicklime per acre will be disinfected every two weeks. Quicklime can not only sterilize, but also increase the alkaline of the water, which is more conducive to fish life.

9. Strengthen the winter and spring season to feed Xiangyun wolfberry against low temperature ability, in the water temperature of 10 °C -15 °C four major population has basically stopped growing the environment, still able to feed normal growth (The author observed that the water temperature 8 °C, Xiangyun 鲫Active feeding is still needed. At this time, it is necessary to continue feeding and strengthen cultivation so as to give full play to the advantage of growth in the low temperature season.

10. Appropriate wheel catching and rotation, improving economic efficiency Xiangyun has good characteristics of easy catching, and the catching rate of standard ponds can reach more than 80%. Fish stocks that are stocked at the beginning of the year can be sold from the end of May to the beginning of July. At the end of May, it began to be listed and sold for sale, catching big stay and small, which not only avoided the phenomenon of large numbers of fish and fish selling in the autumn, but also obtained higher selling price, increased economic efficiency, and played a role in sparse pool fish density. . In July, more than 80% of the fish were arrested and listed, and the first batch of large-scale Xiangyunxiao summer flowers was released. The fish can also be listed in the off-season from March to May in the second year.

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