Countermeasures of Shrimp Culture before and after Typhoon

In coastal areas, typhoons, torrential rains and other bad weather often occur. The influence of bad weather has a great impact on the ecological environment of cultured shrimp. In particular, the rainstorm brought by the wind in transit will cause stress of shrimp, and shrimp diseases can easily occur after the rain, resulting in a large number of shrimp discharge by farmers. Although the bad weather does great harm to the shrimp farming industry, we can reduce the breeding risk by taking certain preventive measures.

Countermeasures for raising Shrimp before Typhoon

On the eve of the typhoon, first of all, it is necessary to raise the water level of the shrimp ponds and increase the water storage capacity as much as possible, because when the typhoon passes through, it will certainly bring Rain Water, which will cause some changes in temperature, salinity, PH value, transparency, dissolved oxygen, and so on. It will cause the shrimp to have a stress response. Raising the water level in time can effectively reduce the influence of Rain Water on temperature and salinity, which will play a good buffer role. Secondly, while maintaining a certain water level, a large number of living bacteria preparations and water regulating agents should be used, such as nitrification No. 1, water retention biotics, water ecological treasure, ecological fertilizer and water ointment, etc., to adjust the water quality to the best state.

Practice has proved that strong water color and low transparency are easier to resist typhoon weather. The dense water color and low transparency indicate that the water is rich in phytoplankton, and their high density can produce rich oxygen, which is more beneficial to promote the growth of prawns and maintain water balance. A large number of living bacteria can not only degrade harmful substances such as ammonia nitrogen, nitrite, hydrogen sulfide and organic acids in water, but also absorb and utilize macromolecular organic matter, which can be mineralized to form inorganic salts to provide nutrition for the growth of algae. Form a virtuous circle ecosystem in the shrimp pond. Keep the bacterial phase and algal phase of the shrimp pond stable. This is of great significance for maintaining a stable water color and good water quality environment during typhoons. Therefore, sprinkling Shuiyangebao + Lvshui No. 1 in the whole pond before the typhoon, and taking Yotobacter, Jinwei'an and Weiming internally, on the one hand, it can create a good water environment, on the other hand, it can enhance the resistance and anti-stress ability of shrimp.

Countermeasures during typhoon

During the typhoon, it is necessary to constantly turn on the aerator to prevent shrimp from lack of oxygen. The weather changes abnormally before and after the typhoon, and it will be accompanied by low pressure weather. At this time, the water environment changes rapidly, and the dissolved oxygen in the water is generally in a state of low dissolved oxygen. The start-up of rain caused by typhoon is beneficial to solve the phenomenon of stratification of water temperature and salinity. Reduce the variation of water temperature and salinity to the minimum, and reduce the possibility of shrimp stress. If the shrimp pond with convenient drainage should also drain some fresh water from the upper layer, keep the temperature and salinity relatively stable as far as possible. During this period, timely sprinkle detoxification stress essence in the whole pond to control the stress caused by abnormal weather, avoid algae dumping and water diversion, and at the same time sprinkle Jinwei'an in the whole pond to reduce the death of prawns caused by changes in water quality.

Countermeasures after Typhoon

After the typhoon, especially the long-term heavy rain or torrential rain, the ecological environment of shrimp ponds is affected to varying degrees, the ecological environment of shrimp ponds is out of balance or completely out of balance, it is difficult to recover in a short time, resulting in the rapid propagation of pathogens. As a result, abnormal conditions and even disease outbreaks will occur in the water environment or shrimp within 1-2 days. Therefore, the first task after the typhoon is to control the reproduction of pond pathogens. As the shrimp are physically weak after the typhoon, some disinfectants will have a great stimulation to the shrimp, resulting in shrimp death, but also affect the growth of algae. We should choose fermented traditional Chinese medicine for disinfection, such as Jin Wei'an, Weiming, Multi-effect Anti-toxin, Jinfang Hugan Bao, etc. can be used to remove bacteria in the water body, and also play a role in regulating water quality and promoting the growth of algae; the second day detoxified the water body with detoxification stress essence; on the third day, after soaking with ecological fat water ointment and Lvshui No. 1 for 2 hours, the whole pool of chemical water was sprinkled to cultivate healthy and good water quality.