After breaking the seedlings, the seedlings are kept in the cages. Each 100,000 tails are fed with cooked egg yolks, 2-3 times a day, and they can be cultivated in the lower pool after they are fully free. Its cultivation techniques are as follows: 1. Miaochi organizes selection of cement ponds or soils with small areas, and spreads 10-15 cm thick fertilizer mud at the bottom of the cement pools. After soaking and rinsing them with fresh water several times, they are disinfected with quicklime (112 g) or bleaching powder (1 g) per square meter. 1.5 kg of basal fertiliser per cubic meter, after injecting new water, the pool water will turn green and the seedlings will be placed in the pool after the medicinal properties disappear. Second, the stocking density of static pool stocking 400-500 per square meter; half-water depth maintained at 30-50 cm. Each nursery pond should be filled with seedlings that are hatched on the same day in order to avoid large and small beading, leading to large eating. In addition, the seedlings are cultivated for 20-30 days. When the body reaches 4 centimeters or so, the pool is divided in time to reduce the density. Third, fertilization management seedlings pool will appear after the fertilization of large branches, these aphids will cause some damage to the seedlings, but to increase the amount of fertilizer, accelerate the growth of phytoplankton reproduction, can inhibit the development of blisters. Therefore, the nursery ponds should be fertilized so that the transparency of the pool water can be maintained at 15-20 cm. If necessary, the fertilizer can be applied quickly. When the water temperature is low, 2 grams of ammonium nitrate per cubic meter of water is applied. When the water temperature is high, 2.5 grams of urea is applied per cubic meter of water. Once a day, even applied 2-3 times. IV. Water quality management Add fresh water or change water in a timely manner within 15 days of seedlings and lower pool. In addition, the adaptability of seedlings to changes in water temperature is also low. When the water temperature changes rapidly, it can also cause the death of seedlings. Especially in small earthen ponds or cement ponds, the temperature difference between day and night is relatively large, and the temperature rises quickly. The duckweed, seedlings can be adsorbed under the roots of duckweed in a slightly lower temperature environment. Fifth, the feeding method starts from the cage resuscitation, and timely feeding should be performed to meet the needs of its growth and development. In accordance with the amount of natural food, timely feeding of cooked egg yolk, soy milk, fish meal and powdered food, etc., the amount of feeding 1 hour for eating, several times a day. SICHUAN UNIWELL BIOTECHNOLOGY CO.,LTD. , https://www.uniwellbio.com