Tilapia is resistant to hypoxia and likes fat water, and the fat pond near the town with a large amount of domestic sewage is also suitable for tilapia culture, but in order to increase the yield, it is also necessary to choose and create a good ecological environment for tilapia growth. Let's learn how to raise tilapia in the pond.

First, the preparation before stocking fish species

The area of ponds for tilapia culture can be as small as tens of square meters, and as large as several thousand square meters, but it is generally not more than 5 mu. Clean the pond 15 days before the fish enter the pond, and apply base fertilizer after 5-7 days, with 400-500 kg of manure or 250-400 kg of green manure per mu.

Fertilizer can be put into small piles, placed in the shallow bank of the pond, and turned every few days to make it fully decompose. If chemical fertilizer is applied as base fertilizer, 4-5 kg urea and 7.5- 10 kg calcium superphosphate are mixed for use per mu.

Second, tilapia farming methods

The pond culture methods of tilapia include monoculture and polyculture.

1, the general water depth of single culture of tilapia 1 m pond, 5,000-8,000 fish of about 3 cm per mu; Stocking 3000-4000 fish of 5-7 cm per mu; Or 300-500 parent fish are stocked at about150g per mu.

2. Mixed culture of tilapia The mixed culture of tilapia and domestic fish in the same pond has high yield and good effect. Generally, tilapia is the main fish for raising families. 2,000-2,500 tilapia fingerlings of 4-6 cm per mu, and 50-80 silver carp fingerlings of 100-150g or silver carp fingerlings of15cm100; Raising10-13cm bream 100 fish; Raise 30-50 carp with a body length of 4-6 cm.

3. Feeding and management of tilapia

1, feeding tilapia is an omnivorous fish. At present, artificial breeding is mainly based on feeding compound feed and feeding other types of feed at the same time, so as to improve the utilization rate of feed for tilapia, reduce the breeding cost and obtain higher profits.

2. Generally, manure100-150kg or green manure 200-300kg per mu is applied every week. Manure must be fermented and decomposed, diluted with water and poured into the pond; Use chemical fertilizers, such as1.5-2.5kg for urea and 3-5kg for calcium superphosphate. The feeding amount of tilapia in the whole production period is 3%-5% of the total fish weight.

3. In order to control the density of tilapia in the pond and prevent the density from being too high due to frequent breeding, which will affect the growth of fish, measures can be taken to catch tilapia by rotation, catch large fish and leave small ones. Generally, fishing can be started after three months of feeding, and the commercial fish can be caught in batches, which is an effective measure to improve the yield per unit area.