1. preparation before stocking: the fish pond is required to be large in area, generally 4-8 mu, and the water depth is generally 1.5-2 meters. Before stocking, organic fertilizer should be applied for cultivation, and appropriate base fertilizer should be applied to silver carp to control rotifers from entering the pond during the peak period.

2. Summer flower stocking: The stocking time is generally from May to June, and there are two kinds of polyculture in Danyang River. Generally, polyculture is adopted, because the habits of fish are gradually different at this stage, and the requirements for the external environment are also different. According to the habits of various fish and their adaptability to water quality, polyculture is not only suitable for the growth of various fish, but also gives full play to the utilization of water and the economy of food. Fish ponds are generally mixed with 2-3 species. In this experiment, a little silver carp and carp are mixed.

3. Feeding management: At this time, the silver carp still takes plankton as the main food, and the water in the pond needs fertility and a lot of plankton. In addition to applying base fertilizer before stocking, green manure and cooked manure should be applied after stocking summer flowers, combined with regular injection of new water to keep the water brown. Pay attention to the principle of "four determinations" when artificially feeding bait, that is, timing, positioning, qualitative and quantitative, in order to improve the utilization rate of bait and reduce the feed coefficient, and the amount of bait is small at this time.

4. Daily management: patrol the pond once every morning, observe the color of the water and the dynamics of the fish, often remove weeds and corrupt sundries in the pond, clean the dining table, and disinfect the dining table and food. So as to protect the sanitation of the pond; Pulling net inspection is not only beneficial to fertilizer and water, but also convenient to check the growth and disease of fish, so as to reasonably determine the feeding amount and the prevention and control methods of fish diseases, and do a good job in preventing escape, theft, fish diseases and enemies.

5. Overwintering in ponds: In late autumn and early winter, when the water temperature drops below 10, the fish have stopped eating. At this time, the fish must be fished out and concentrated in a deep fish pond for the winter. The idea is to stop feeding in Tang Qian for a week, pull the net out of the pond in sunny days, and pull the net when merging the pond, and be careful to avoid fish injury and mildew during the winter. The depth of the pond is more than 2 meters.