In recent days, heavy rains have generally taken place in many southern provinces, and Jiangxi has also experienced the largest torrential rain this year. 64 counties and cities have been affected by heavy rain. Heavy rains have caused excessive rainwater to cause drastic reductions in water temperature, salinity, pH, and dissolved oxygen. Hazardous substances such as hydrogen sulfide, ammonia nitrogen, and nitrite have exceeded standards. The drastic changes in water quality will put too much stress on shrimp and cause severe shrimp immunity. Decline, on the other hand, will lead to the proliferation of anaerobic pathogenic microorganisms, leading to outbreaks of bacterial diseases and viral diseases.
First, before the storm
1. Prepare to: clear and reinforce the flood discharge trench; full of generator battery to prevent power failure; check the line for damage, electricity, and electricity leakage; provide sufficient diesel, oxygen booster, and quicklime; overhaul oxygen-adding equipment; check the house There is no damage, especially bait room and generator room.
2. Pond water quality treatment: Sprinkle agricultural lime or dolomite lime, increase the stability of water quality, 10 to 20 kg per mu; Small amount of meals, feed high-quality feed and add vitamin C, vitamin E and lipopolysaccharide, polysaccharide and other immune promotion A long agent to enhance the immune system of shrimps; more organic matter (more foam and more rotifers) to be treated with Bacillus as the main microbial agent; ammonia nitrogen, nitrite, or hydrogen sulfide is too high and must be reduced in a short period of time. If the weather is not good, use zeolite powder (15-20 kg per acre) and use microbiological preparations based on photosynthetic bacteria and nitrifying bacteria; disinfect with non-pollution and non-residue drugs such as chlorine dioxide, amino acid iodine, etc. Pool water, reducing the concentration of pathogenic bacteria; High-density intensive intensive ponds with many suspended organic particles and having a central bottom drainage, splashing polyaluminum chloroaluminate and dolomitic lime, and discharging or siphoning from the center bottom after coagulation, circulation, and sedimentation (cement Or film pool bottom) removal.
Second, the storm comes
Stop feeds; spill high-stabilized vitamins and glucose at dosages of 0.1-0.2 kg per mu and 1 kg per mu to reduce environmental stress; open aerators (when the wind is high or open only (Oxygen machine); Seawater shrimp ponds should start the surface water pre-planning when the rainfall is heavy and the rain time is long, and the salinity is drastically reduced; when the pH is less than 7, the lime is poured (5 to 10 kg per mu, divided into 2 intervals) Always observe the presence or absence of blackouts, operation of aerators, and unusual activities of shrimps. If serious floating heads appear and you cannot solve problems by opening all aerators, use solid oxygenizers in time.
Third, after the heavy rain
To regulate water quality and prevent disease outbreaks. Biodegradation with poor sediment quality; high levels of ammonia nitrogen, hydrogen sulfide, and nitrite are conditioned with microbial preparations; feeds are halved at the beginning of feeding; high-quality, high-protein feeds are added and glucose is added (3 ‰～5‰), Vitamin C (8‰-10‰), Vitamin E (1‰～2‰), Lipopolysaccharide (1‰), Polysaccharide (0.5‰～1‰), etc. Enhance immunity and prevent outbreaks of disease. According to the situation of shrimp ponds, the characteristics of water quality changes, and the activities of shrimps, the timely and accurate response measures before, during, and after the onset of heavy rain may prevent the outbreak of the disease and minimize the loss.
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