Ponds should be circulated regularly in a planned way, such as high and low ponds, periodically circulating water from high ponds to low ponds, and then pumping water from low ponds to high ponds. According to different seasons, the longest circulation time shall not exceed 30 days. The flow of pond water will produce a lot of oxygen, increase the vitality of water and enrich the oxygen-enriched ability of pond.

2, oxygen adjustment method:

When green water is found in the shrimp pond, it is necessary to add oxygen-increasing facilities in time, aerate the pond, adjust the ph value of the pond to neutral, regularly sprinkle white ash into the pond for sterilization, eliminate a large number of green algae, or use algae-removing drugs in time to change the water quality of the pond and improve the water vitality of the pond.

3. Pond shaking method:

Green ponds should be regularly cleared of algae and mechanically moved regularly to increase oxygen content. The speed of mechanical movement should be slow to avoid damaging the shrimp in the pond. It's better to move the pond at noon. This method can also effectively increase the oxygen content of the pond and increase the water vitality of the pond.

4. Reasonable change of fish and shrimp polyculture method:

The technology of fish and shrimp polyculture is to reasonably match the different feeding habits of shrimp or fish in the pond based on the full consideration of the carrying capacity of the upper, middle and bottom organisms in the pond and the relationship of the food chain. It is suggested that grass carp should take shrimp as the main ecological balance system, and grass carp can also eat all kinds of aquatic plants such as green algae in the pond, and make use of the complementary relationship between species niches for ecological culture. This technology can effectively reduce the pollution of residual bait to water quality, inhibit the spread of pathogens, and effectively achieve the purposes of regulating water quality, reducing diseases, rationally utilizing water resources and increasing benefits.