Grass carp species should choose individuals who are golden in color, harmless in appearance, lively and robust, and weigh about100g. At the same time, because grass carp hemorrhagic disease and enteritis are easy to infect the current fry, the second-year-old fry is better in the selection of fry.

2. Fish stocking

Grass carp species are generally stocked with 800 ~ 1000 per mu, and individual specifications are 250g ~ 500g silver carp species 100. Carp do not match or match less to avoid competition with grass carp. In addition, the fish should pay attention to the disinfection of the body surface before entering the pool.

3. Feed feeding

Granular feed is the main feed, with protein content of 28-32%, supplemented by green feed. Generally, grass carp should be fed twice a day, and eaten within 2 hours until it is 80% full. After feeding pellet feed continuously for a period of time, pellet feed should be stopped 1 week, and raw grain feed should be fed at intervals.

4. Water quality management

Use the aerator correctly. It is sunny and windless in June and June. Start the aerator for 2 hours every afternoon 1 ~ 3, and aerate in time in the early morning. Oxygen should be added early in continuous cloudy days. Inject fresh water into the pond at the right time, and gradually control the water quality by adopting the method of "small row and small inlet, and changing water for many times". From June to September, add fresh water 1 time every 3-5 days.

5. Disease control

The feeding mode of "combination of fine and coarse, fine and green" was adopted to control the occurrence of hepatobiliary syndrome in grass carp. Common diseases of grass carp are erythroderma, gill rot and enteritis. Generally, oral administration is combined with external spraying, and external spraying is mainly based on disinfectants such as bleaching powder and chlorine dioxide, which lasts for 3 days.

6, timely fishing

Catching and selling large-scale adult fish in time is an important measure for high-yield culture of grass carp. The main purpose is to reduce the fish carrying capacity of pond water and promote the rapid growth of pond fish in the later stage. Generally, 1 time will be caught at the end of July, and it will be caught in the early morning when the water temperature is low.