Polyculture technology of Oreochromis tilapia and freshwater white pomfret ponds

1. Pond conditions
2. Supporting facilities
Pond power equipment is required to reach 1kW/mu. When conditions permit, a diesel generator with sufficient power is required as a self-supplied power supply. It can be equipped with 1.5kW～3. Preparations before stocking
The dry pond cleaning method is to leave only 8cm～12cm water depth at the bottom of the fish pond after trimming. Apply quicklime 50kg/mu～60kg/mu. After it is dissolved with water, the whole pond is evenly sprinkled. After the pond is disinfected and filled with water, organic fertilizer 200kg/mu ~ 500kg/mu is applied to cultivate the water quality. The organic livestock and poultry manure must be fermented and decomposed, and disinfected with 1% ~ 2% quicklime. 1.The pond that mainly raises Oreochromis tilapia is stocked with full-length 10cm～
2.The pond that mainly raises freshwater white pomfret is stocked with a full length of 10cm～April every year. 3cm and 3cm～5cm are released in mid-May. The time for seed stocking depends on the air temperature and water temperature. When the water temperature stabilizes above 18℃, you can start stocking fish. 1.Water quality control In the process of high-density fish farming, fish feces and residual bait can easily cause water quality to deteriorate. Therefore, appropriate water changes, regular application of quicklime and beneficial microbial preparations should be adopted in the pond to regulate water quality to prevent diseases.In the early stage of placing fish species in the pond, follow the principle of gradually adding new water. It is not advisable to change too much water. In the future, depending on the changes in water quality, add new water 10cm ~ 15cm every 15 days ~ 1 times every 20 days or so. The dosage is 10g/ cubic meters to 15g/ cubic meters. Add water and sprinkle it throughout the pool, and adjust the pool water200kg/mu～300kg/mu or green manure3.Full-priced pellet feed is used for feeding. The crude protein content of the feed is ≥30% and the crude fiber content2 times a day. The daily feeding amount is calculated based on 3%～5% of the total weight of the fish. It should be appropriately increased or decreased according to the pond water temperature, weather, water quality and fish feeding conditions. After each feeding4.Daily management insists on patrolling the pond every morning and evening to observe the fish feeding situation and water quality changes in order to adjust the feeding amount and fertilizer amount in a timely manner. If the fish in the pond are found to have serious floating heads, new water should be added in time or the aerator should be turned on to increase oxygen. Fish disease prevention and treatment should adhere to the principle of prevention first. Maintaining good water quality and doing a good job in daily feeding management are the keys to disease prevention. The main disease in the high temperature season is septicemia caused by Hydromonas hydrophila. This disease is mainly caused by infection by opportunistic pathogens caused by stress reactions caused by deterioration of culture water quality, low dissolved oxygen, improper feeding, etc. It can be treated with oral kanamycin, ofloxacin, etc. The dosage is 3g~100kg fish daily. 8. Catch adult fish
1.The production model of polyculture of Oreochromis tilapia and freshwater white pomfret can bring into play the mutually beneficial effects of Oreochromis tilapia and freshwater white pomfret, improve the utilization rate of feed and fertilizer, and improve water quality.

6.When applying pesticides in ponds, you must pay attention to drug compatibility taboos, read the label precautions clearly, and apply pesticides strictly according to the usage instructions.