1, seedling management. To raise grass carp, fry should be released in spring. Sprinkle quicklime or bleaching powder in the whole pond once before releasing the fry, which can kill bacterial cells and viruses and reduce the risk of grass seedlings. The fry should be strong and fat, covered with mucus and slightly golden yellow, and disinfected with potassium permanganate solution. The time for throwing fry should be chosen as far as possible in sunny morning. During the growth of grass fry, it is necessary to cut ryegrass into 0.5 cm pieces, which is beneficial for fry to eat.

2. Feeding management. Grass carp is prone to bacterial infection and various diseases during its growth, so preventive measures should be taken. If the green feed is mixed with bacteria, slight enteritis will appear after intestinal digestion and absorption, plus various bacterial infections in the water, such as Chinese fleas, fish lice, water mold spores, bacterial hemorrhagic diseases and so on. Therefore, every summer, drugs for treating enteritis and sterilization should be sprinkled all over the water.

3. Observe regularly. In the process of cultivating grass carp, it is necessary to observe the water quality regularly. By observing the grass carp feces floating on the water surface, it was found that the whole pond was floating with grass carp feces, which indicated that grass carp ate normally. If grass carp is sick, it will reduce eating, so it is necessary to find out the reasons in time and take precautions. It is generally necessary to prepare a potion for treating enteritis. In the rainy season, it can also be sprayed all over the pond to prevent and control the growth and development of grass carp.

4. Water quality management. After feeding all the green feed, all the leftovers of grass carp should be salvaged ashore, and they must not sink to the bottom of the water, otherwise they will rot and deteriorate, breed bacteria and viruses, and ensure the clean water quality. It is also necessary to sprinkle bleaching powder regularly and sprinkle bleaching powder for the second time in autumn to ensure the clean growth environment of grass carp.