In response to the current appearance of extremely cold weather and aquaculture, the technical system of the aquaculture industry in the province proposes the following countermeasures.
Raise the water level. Ponds or ring roads push water to raise fish and quickly increase the aquaculture water level to more than 2 meters. If conditions permit, they should be deepened to 2.5 to 3 meters; temporary cages should be sunk to the water layer about 2 meters underwater; ponds should be cultured with shrimps. Maintain the water level from 1.2 to 1.5 meters; culture crayfish, Chinese sturgeon, loach, etc. in paddy fields, keep the water level of Putian 30-40 centimeters; fill the water level before cooling, slowly add water, avoid flushing directly, minimize the stress of aquaculture animals Response; paddy field farming mode, to avoid temporary water in low temperature rain and snow, so as not to cause crayfish out of a hole and Chinese sturgeon floating and appear frostbite, freezing dead.
Snow removal ice. If the water area of ​​aquatic animals intensive culture ponds is snow-frozen, it needs to remove snow and deicing in time, minimize water area snow, shorten the ice-sealing period of the water body, and keep the dissolved oxygen in the air dissolved into the aquaculture water in a timely manner, avoiding shortage of aquaculture animals. Oxygen suffocates.
Stop eating and catch less. During the freezing period, operations such as fishing and feeding are minimized to prevent surface frostbite of fish, crabs and shrimps, resulting in infections such as hydromycosis and even freezing.
Safeguard operation. Remove snow accumulation and ice accumulation in greenhouses, greenhouses, general management rooms, cages, and other facilities to prevent excessive ice and snow from falling down, repair damaged insulation film, and supply and supply power to and supply to aquatic animals such as the greenhouse turtle, Penaeus vannamei and Macrobrachium rosenbergii. Thermal and water supply pipeline facilities to prevent air shortages, power outages, and water stoppages caused by the freezing of facilities; adequate reserves of fuel and aquaculture feeds to ensure the normal operation of greenhouse cultivation.
Keep warm and keep warm. For special industries such as circulatory aquaculture ponds and crayfish farming in paddy fields, qualified farmers can build 30-50m windshields covered with straw on the north side of the pond, blocking the north wind from blowing directly onto the ring roads and rice fields. Surface, which will slow down the cooling of the water. A simple plastic greenhouse can be built on the ring pool to keep the water temperature in the ring. Covering 2-3 cm of rice straw in the paddy field and the field crayfish cave concentration area will increase the temperature of the cave. The parent shrimp is not harmed.
Water quality regulation. Before and after the temperature rise, the chemical oxygenation reform is strengthened, and the aerators are continuously opened in the sunny days to promote the exchange of the upper and lower water, thereby promoting the oxidative decomposition, purifying the sediment, and keeping the water quality of the pond fresh.
Disease prevention and control. Do a good job in disease monitoring and prevention work, remove frozen dead fish in time, and do harmless treatment to avoid the pollution of water quality by dead fish; after cold wave, continuous sunny days 3-5, the pond water temperature is above 10°C, and it can be thrown in appropriate amount every other day. Feed the feed 1 times to enhance the constitution of the fish, shrimp, and crabs; select sunny days, and disperse chlorine dioxide, iodine and other disinfectants 1-2 times to prevent explosive diseases.
Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone
Double Door Safe Box,Home Safe Box,Ammunition Safe Box,Gun Safe
Hebei Tiger Brand Group Jia Bao Cabinet Industry Co. LTD , https://www.cntigersafe.com