Feeding and management points for adult growing season
With rising temperatures, fish enter the growing season, especially in June and September, which is an important season for increasing fish production. Therefore, it is necessary to strengthen the management of breeding. The main measures are: In order to promote the continuous growth and reproduction of fish pond natural food organisms, provide natural food and reduce feed costs. Summer ponds should be suitable for fertilization. In summer, the temperature is high and the water quality changes quickly. Fertilization adheres to a small number of times and is usually applied once every 5 to 7 days. Fertilization promotes the use of inorganic fertilizers and photosynthetic bacteria. Every time nitrogen is applied per acre, phosphorus is 2 to 4 kg or photosynthetic bacteria is 10 mg/kg, fully fermented pig manure can be applied when the transparency of the pond is too large and the weather is normal. When the pond is cloudy and the weather is abnormal, fertilization should be stopped. And promptly change the water. Inspect the pool three times a day. Observe the presence or absence of floating heads at dawn; check the eating and activities of turtles at noon; check the food intake and signs of floating heads at dusk. Timely remove the leftover grass and dirt to remove weeds from the pond so as not to pollute the water quality and affect the dissolved oxygen in the water. Tian Shui is warm. Feeding, fertilizer, large amount of organic matter in the water, oxygen consumption increased, the fish easily floating head due to lack of oxygen, especially hot nights or thunderstorm weather should pay more attention. When there are signs of floating head, new water should be added in time or aerators should be used to increase oxygen, and the amount of feeding should be reduced until feeding is stopped. When the floating head occurs, oxygenation measures should be taken immediately, and yellow muddy water can be added to the pond to add salt water. Generally, 10 kg of yellow mud water per acre is poured, and salt water lOkg is added to an aqueous solution. After mixing, the whole pool is splashed. Fifth, catch round Shaoxing Wine 8Yrs,Ten Year Pld Glutinous Rice Wine,Exquisite Pottery Wine,High Grade Gift Box Wine Zhejiang Shanying Trading Co.,Ltd. , https://www.shanyingtrading.com
First, vote for food
The bait is mainly concentrated, and the green is supplemented. Concentrates include full-priced pellets, bean cakes, cakes, wheat bran and rice bran. The daily feeding amount is 5% to 8% of the weight of the pond. In order to increase the utilization of bait, the number of feedings is generally 4 times a day. The bait requires fresh, mildew-free, non-deteriorating, and good palatability. Concentrates must be placed in the food court, and various green materials can be placed in floating frames. In summer, the water temperature is high and the weather is changeable. To prevent the fish from floating, you can invest more in the morning and at noon, and you should invest less in the evening.
Second, rational fertilization
Third, to adjust water quality
High water temperature in summer, large food intake and excretion. Combined with feeding and fertilizer, it is easy to cause oxygen deficiency in fish ponds and affect fish growth. Prevention methods: 1, properly increase the water level, fish pond water depth should be maintained at 2 m or more, and often a small amount of new water, increase the water dissolved oxygen; 2, regular spill lime, every 7 ~ 10d, each time with lime 15 20kg. Lime has the function of clarification of water quality, prevention of water quality aging, and increase of water body calcium. Scientific use of aerators, aerators have the effect of water agitation, aeration, and oxygenation. When using, according to the actual situation, flexible boot. 4, the use of water quality improver and biological agents, inhibition of harmful bacteria and improve feed utilization.
Fourth, prevent floating head
The wheel catcher not only can put some fresh fish on the off-season to increase economic efficiency, but also can reduce the fish density, make the fish density reasonable, and make full use of the bait. In the middle or late July, a group of fish that have reached the market size will be sold. At the same time, a small portion of small-sized fingerlings will be added to the pond to grow large-sized fingerlings in the coming year. In August and early September, another part will be caught. Fishing should take place in the cool morning.
Six, comprehensive disease prevention
Summer is the peak season for fish growth and it is also the peak season for fish disease. Should adhere to the "anti-emphasis on governance, prevention and treatment combined, early treatment of disease." Frequent illnesses include bleeding, enteritis, gill disease, and Chinese rickets. Routine management work should be done to disinfect bait, tools, and water. Each month and a half with 0 5mg/kg strong chlorine fine disinfection of the food field 1 times. Every 2 days, 3% saline solution was used to soak the feed for 5 days. Once the onset of disease encourages the use of environmentally friendly and improved fishery drugs, it is recommended that Chinese medicines and biological agents be used as much as possible. It is forbidden to use fishery drugs without “three certificatesâ€. The “three certificates†means production license, approval document number and production batch number.