Autumn is a good season for fish to grow fat. A long-term experiment by fishery science and technology workers has shown that doing a good job in this period of time can increase production by about 30% compared to normal management. So, what measures should be taken for the fish to grow in autumn? First, pay attention to top dressing It is well-known that there is a biological food chain for fish farming, such as cockroaches, squid, etc., which need to filter for plankton. Therefore, in the autumn, it should be seen that water fertilization, cultivation of biological food bait in order to meet the needs of the growth of larvae and earthworms. The temperature is higher at the beginning of autumn, and fertilization should adhere to a small number of principles. If it is a fertilizer pond, applying a small amount of fertilizer can not only avoid the deterioration of water quality, but also keep the water quality fat, live, tender and cool. Generally, 2.5 mu of urea and 5 kg of superphosphate are applied in order to make the pool water green or tea green suitable. If it is the Qingshui half-lime pond, the human feces of fermented livestock are mainly used. Mushi 400-500 kg, applied every 7-10 days, can quickly cultivate plankton, to meet the needs of fish feeding. At the end of autumn, if the water temperature drops, organic fertilizer should be used to make the pool water become fat, the water color turns thick, and the plankton is promoted to multiply, providing sufficient nutrition for the wintering of the fish. Second, the temperature in the autumn began to drop significantly, the temperature difference between day and night was large, and fish began to accumulate energy to prepare for winter. At this time, on the one hand, it is necessary to ensure that enough green feed is fed, and feed once a day in the afternoon and in the afternoon, and it is advisable to eat within 2 hours each time. On the other hand, it is necessary to increase the amount of concentrate feed, which can be mixed with bran, rice bran, peanut bran, and soy flour. Feed once a day, feeding the amount of 2.5% -3% of the total fish, after October appropriate increase in the amount of feed to ensure the nutritional requirements of fish fattening larvae. Second, pay attention to water quality Maintaining good water quality at all times and creating a good environment for fish growth are the keys to promoting long-term growth of fish. Generally, new water should be poured every 7-10 days, each time changing the water volume by 20-30 cm; secondly, 20 kg of quick lime should be poured on the surface of each mu. Quicklime neutralizes acidity, increases pH, releases nutrients, and improves water quality and sediment quality. Sprinkle 1-2 times per month is appropriate. If it is a fertilizer pond or a fish pond that is mainly fed with concentrate feed and a pond in a supporting livestock farm, the water quality is easily eutrophic. It is better to use 50-60 square meters of water on a bamboo raft fence per acre pond to plant a water-laying lotus. And water peanuts, etc., to absorb excess ammonia nitrogen, to improve the regulation of water quality purposes. At the same time, water peanut leaves can also be fed grass carp. Third, pay attention to prevent floating head In autumn, ponds with high intensive density and high yield have a large amount of organic fertilizers, a large amount of organic matter, and frequent fish movements, which are prone to hypoxia floating heads. At this time, it is necessary to strengthen the patrol pool in the morning and evening, especially in the middle of the night. During feeding, once fish were found to be eating less, eating longer, and more residual bait in the pond, especially when the grass carp headland was swimming without signs of grazing, the water began to lack oxygen. If waves can be seen on the surface of the water during the day, the fish groups are frightened and visible waves are visible on the surface of the water, indicating that “drifting heads†have appeared. If measures are not taken in time, flooding is likely to occur. When fish heads are found to have signs of floating heads, aerators should be activated immediately to increase oxygen, or new water should be injected into the pond to increase the amount of dissolved oxygen. If there is no new water infusion and there is no aeration machine oxygenation, dissolve 5 kg or 20 kg of salt water with alum per acre, or use an oxygenating agent according to the instructions. At the same time, you should pay attention to clean the impurities in the water. To reduce pollution and purify water quality. In addition, in the autumn, fishes are prone to enteritis, gills, red skin and other diseases, and prevention and control should be combined. The pond with a depth of 1 meter per acre is bleached and splashed with 1 kg of bleached water in the pond every half a month. At the same time, the fish must be fed once with “Cyprevir†and “Fishikang†to prevent disease; if a disease has already occurred, Continuous use of water disinfectant 2 times, feeding a course of medicine bait (4-5 days), can cure fish disease. Pumpkin Seed Kernels,Pumpkin Seeds Kernels Roasted,Shine Skin Pumpkin Seed Kernels,Pumpkin Seeds Or Kernels Wuyuan county dafeng oil food co.,ltd , https://www.dafengfood.com.cn