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I. Properly deploying fishery production water To ensure that water for human and livestock use and spring sowing irrigation are not affected, take measures such as water discharge from reservoirs, water diversion from rivers and rivers, water storage for dams, water diversion, water pumping stations, etc. Provide fishery production water. One is to temporarily set up pumping stations in rivers and low trenches where there are water sources, excavate water conveyance channels or take water manually. The second is to temporarily drill wells and dig springs to build reservoirs. The third is to intensify the leakage inspection and maintenance work on ponds, fish farming rice fields, etc., to reduce water waste, ensure smooth water supply, and improve the utilization of water.
2. Strengthen the management of the aquaculture process Before the drought is eliminated, reduce the feeding of feed, remove the residual baits and debris in time, and keep the existing water environment in good condition. Herbivorous fish should reduce the feeding of concentrate feed to feed forage. The planktonic plankton is the dominant fat fish, and other feed fish should be fed at 70%-80% of the normal amount. At the same time, the amount of fertilizer used should be appropriately reduced, and fish ponds should be replaced by water, chemical water and biological water in a timely manner to keep the water fresh and prevent the water level from deteriorating and the water quality from deteriorating.
3. Ensuring the protection of fry breeding Firstly, we need to adjust the water source for breeding and breeding, and we must adopt various measures such as drilling wells to ensure that the breeding water is used as much as possible so that breeding of urgently needed seedlings will be less affected. The second is to transfer ponds and ponds to ensure safety. To the dry-drying ponds, the broodstock and fish species should be quickly transferred to ponds with water, and in particular, the survival of the famous fish parents such as crayfish and astragalus should be ensured. The third is to ensure normal seedling propagation. In regions with better water sources, more species should be cultivated to lay a good foundation for restoring fishery production after the disaster; areas with poor water resources should pay attention to protecting the parents and prepare for post-disaster breeding.
IV. Scientifically regulating water quality One is to splash lime regularly. Adjust the PH value of pool water to inhibit the proliferation of bacteria and other pathogens. Second, use water repellent to clarify the water quality and increase dissolved oxygen in water bodies with turbid water and high fatness. Third, use microecological preparations in a timely manner to improve the water environment. Fourth is timely. Use oxygenerators to increase the amount of dissolved oxygen in the water. Fifth, you can make supplements to lower-middle-level fish such as "Scavenger" (Lactobaciuda chinensis) in places where conditions permit, and improve water quality.
V. To timely adjust the aquaculture structure to shallow pools, we must actively adjust the aquaculture structure and reorganize small-scale cultured objects such as squid, stingray, loach, etc. in “Zhongke No. 3†to quickly increase the efficiency of dilute culture. For ponds with insufficient water resources after the disaster, Can be changed to aquatic vegetables to reduce the adverse impact of drought on fishermen's production and life.
Sixth, to strengthen the prevention and control of the epidemic First, the regular disinfection of the pond, timely disinfectant to prevent fish disease. The second is to resist invasion of alien organisms. For fish ponds with shallow water levels, adopt methods such as scarecrows and artificial expulsion to prevent predators and rodents from attacking organisms. The third is to strengthen forecasting and prevention, in particular to prevent bacterial septicemia, gill disease and other fish diseases, to avoid fulminant outbreaks.
7. Timely organization of adult fish market sales Due to drought, the water storage capacity of the pond pool is reduced, and the density of fish is increased. This can easily lead to hypoxia floating heads and even death. Listed commercial fish stocks should be listed in a timely manner to reduce the amount of fish loaded, relieve dissolved oxygen pressure, and ensure the safety of fish that have not reached the market specifications.
Scientific Drought Protection Guarantees Aquatic Product Benefits
Our province has suffered drought in the winter and spring once in 50 years this year. The drought in most counties and cities is very serious. The drastic reduction of water storage in lakes and reservoirs, and low water levels in ponds and ponds have seriously affected current fishery production. To this end, the Provincial Fisheries Bureau organized fisheries experts to formulate technical measures for drought resistance, which are hereby published for the benefit of farmers' friends.