Autumn is the peak season for fish to prolong its growth. Grasping the feeding and management during this period can enhance the fish's constitution and lay a solid foundation for the safe wintering of fish. As the saying goes, "deep water raises big fish" is the truth. The water level of aquaculture ponds can be added to more than 2m, and the water level of the fish breeding ponds can be added to 1.5-2m, so that the fish can live in a good ecological environment with large living space, sufficient oxygen, and rich natural baits. Stepping on fodder can promote the growth of filter-feeding fish such as grasshoppers, flies, cockroaches and other food-eating fish. Every 100kg of grass carp and flyfish is fed with dry grass 20-30k8 (or 80-100kg of water grass, or 3-5kg of Jingke). In addition, we must look at the sky, see the water, watch the fish, and flexibly increase the amount of fertilizers and fertilization. We must follow the principles of feeding and fertilizing with less quantity and more diligence. Let the fish eat well. The source of disease control is relatively moderate in autumn temperature, pathogenic microorganisms are easy to breed, and it is also a season of fish disease. The bait and debris in the pond should be removed every day, and new water should be added in time according to the weather and the activities of the fish. For a convenient fish pond, fresh water is added every 10 days or so. Where water is inconvenient, add new water every 15-20 days. In the case of a water depth of 1m, it is also possible to use 10kB of quicklime and water to splash the entire pond once to improve the water quality. There is autumn. One day, said, fish ponds with more water quality should be guarded against flooding. In the sunny afternoon, turn on aerators to increase oxygen and mix up and down oxygen levels to prevent nighttime hypoxia. Use 2—2.5kg of bleaching powder to spray water around the food field, splash it for 3 days continuously, or add 0.5kg garlic seeds (mashed) and 1kg salt to feed the fish per kg of feed to prevent bacterial fish disease. With 0.5g of copper sulfate, 0.2g of ferrous sulfate, or 0.5g of trichlorfon per cubic meter of water, the whole pool is splashed with water to prevent and control fish parasites. The trapping net will catch and market it, and add appropriate amount of fish species at the same time.The catching and rounting will give full play to the production potential of fish ponds, adjust the breeding density, promote the balanced growth of fish, and also provide large-scale species for the next year fine-culture. It is one of the effective measures to increase the economic efficiency of fish ponds, but the “hot water fish†caught in the summer and autumn is very vulnerable to injury or death due to lack of oxygen.Therefore, it is required to be meticulous, skilled, and brisk when fishing. Lower, pool water, higher oxygen, usually fishing at dawn, for If the fish has a floating head phenomenon, it is forbidden to pull nets for fishing, and it is forbidden to pull nets in the evening so as not to cause early convection in the upper and lower water layers and accelerate the oxygen consumption of the pool water, resulting in fine floating heads. The Taiwan guides the fish to the food area, then lifts the four corners of the net to catch the fish in the net. This method can be used to cut the fish and is easy and convenient. After fishing, the fish secretes a lot of mucus, and the pool is muddy and the oxygen consumption increases. Therefore, new water or an aerator must be added immediately to allow the fish to have a period of top water to flush out excess mucus, increase oxygen and prevent floating heads.
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