“From June to August, it is the highest period of temperature and water temperature in the whole year, and it is also a critical period for aquaculture production.†A few days ago, in front of a group of aquaculture ponds in the Xinglong Village, Limelong Township, Yilong County, Sichuan Province, Yimin County Fisheries Fisheries Liu Zhaojun, a senior agronomist of the Bureau, introduced the precautions for summer aquaculture to the farmers based on the characteristics of climate and aquaculture production in June-August.
First, we must strengthen daily management and stick to duty on duty. During the season of changing weather, we must pay close attention to the observation of the fish’s eating and feeding conditions and behaviors, and be sure to put the feed “four settings†(qualitative, quantitative, positioning, timing) and fertilize “four views†(see the fish, see the sky, see Water, see the season); in thunderstorms or hot weather, in particular, we must promptly find the signs of hypoxia, and timely inject new water, open the aerator, to avoid pan fish dead fish situation.
Second, we must strengthen water quality control. The quality of water quality is the key to fish rearing, so management of water quality regulation should be done well. (1) Turn on the aerator: Start the water adjustment at noon on sunny days to promote the convection of the water, increase the dissolved oxygen in the bottom pool, and emit toxic gases; when the weather is hot, the boot time can be appropriately extended, and when the weather is cool, the boot time is reduced, and the floating head in the middle of the night is increased. boot time. (2) Sprinkling biological agents: Regularly sprinkling biological agents such as photosynthetic bacteria and EM bacteria can make the water quality meet the requirements of “fat, live, tender, and coolâ€, regulate water quality, prevent bacterial fish diseases, and increase the fish’s ability to feed food. Immune Function. (3) Adding new water: Injection of new water can increase dissolved oxygen and nutrients, and dilute the organic matter and toxic substances in the pool water. Water is usually added every 7 to 10 days, each time adding 15 to 20 cm of fresh water.
Third, we must do a good job in disease prevention. Summer is the peak period of fish disease, especially hemorrhagic disease, gill disease and enteritis disease, etc. Therefore, attention should be paid to the disinfection of fish ponds and the quality of feeds, and it is forbidden that rotten spoilage feed and toxic substances enter the pond.
When applying pesticides, pay attention to fish ponds with an average water depth of less than 80 cm. When the water temperature is above 30°C, do not spill the drugs in Quanchipia. When the water quality is relatively high and the temperature is lower, the dose should be increased and vice versa. Should not be applied in the afternoon or evening, at noon, and other fish in the floating head or floating head just finished, it should not Quanchiposa; spraying the wind when the wind should be upwind from the wind; splashing can not be feeding at the same time, generally Apply after feeding, but wait 1 to 2 days before feeding internal medicine. Do not pull the net within 1 to 2 days after the drug is poured.
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