shrimp culture water level

The water level of river shrimp should be about 60cm when it is young, and above 1.5m in the middle and later stages of culture, and it is necessary to change water 5cm every day and increase living bacteria to keep the water fresh. Shrimp culture should be far away from waste water pollution sources, shrimp ponds should be built in the position of good lighting and ventilation, and shrimp ponds should be disinfected in advance before releasing seedlings to prevent escape and prevent wild miscellaneous fish from entering the pond.

1. Changes of water level during shrimp culture in the river.

When cultivating river shrimp, the water level should be kept at about 60cm, and the amount of water should be increased by about 4cm every day in the early stage of culture, until the water level reached 1.5m. In the middle and later stages of culture, it is necessary to change the water 5cm every day. In order to keep the pond water fresh, live bacteria can be added to transfer water.

2. The opening principle of aerator

The opening of the aerator in river shrimp culture should follow the principle of "four open, three do not open". Four open means that sunny weather opens at noon and cloudy days open the next day. If continuous rainy weather should open in the middle of the night, open 2 hours before and after feeding; do not open after sunrise, do not open in the evening, do not open at noon on cloudy days. In addition to following these principles, the aerator should be turned on reasonably according to the changes of season, weather and water quality, so as to ensure the survival rate of river shrimp.

3. Maintenance of algae stability

In the process of river shrimp culture, the transparency and pH of the water body should be well controlled, the use of salinity should be appropriate, and beneficial bacteria can be added appropriately, so that algae can grow stably.

4. The use of water quality protective agents

In the process of culture of Penaeus vannamei, attention should be paid to improving the dissolved oxygen in the water, the algae phase and PH value should be well controlled, the change should not occur as far as possible, ammonia nitrogen and nitrite should be reduced, and harmful substances should be produced after the hydrolysis of organic matter.

5. Use of live bacteria

In the process of culture of Penaeus vannamei, the use of live bacteria in water is indispensable. Microbiological agents should be used regularly to promote the balance of beneficial organisms in the water and inhibit the occurrence of bacteria.

6. Use of disinfectants

In the process of river shrimp culture, the water body should be disinfected regularly to avoid harmful substances in the water body to breed and cause pollution, which is not conducive to the growth of shrimp.

7. Check the water body index regularly.

In the process of culture, the water body should be managed and detected regularly, and the PH value, ammonia nitrogen, nitrite and hydrogen sulfide in the water should be monitored in time, and abnormal should be found and dealt with in time, so as not to affect the growth of shrimp.