In recent years, some aquaculture farmers have disputes on the polyculture of fish and ducks. Some think that fish and ducks are well-mixed and can promote the double harvesting of fish and ducks. Others believe that the polyculture of fish and ducks will affect the yield of fish, which is not worth the candle. In fact, if fish and duck are mixed or not, the key is to have no law. How to formulate fish and duck polyculture? (I) Fish stocks should be properly reared in fish-duck mixed ponds. Tilapia should be used as the main source, followed by filter-feeding eel, mackerel, and omnivorous mackerel. , squid and so on. Grass carp, because of its love for quiet water, should be kept or put less. (b) Do a good job of fish pond irrigation and drainage system Fish ponds in ducks, duck dung can easily lead to excessive water quality. In this way, it is easy to infect a fish or cause pans. Therefore, regular injection of fresh water into fishponds is required. If the irrigation and drainage system is not good, the water will not fill, and the fertilizer and water will not be discharged, which will affect the normal growth of the fish. (3) Pay attention to the changes in water quality of fish ponds. Adjust the stocking density of fish and ducks according to the water quality of fish ponds. When the transparency of fishpond water quality is maintained at 15 to 25 centimeters, 2500 to 2700 fish species can be stocked and 200 to 300 ducks can be stocked. If the transparency of the water quality is reduced, it is necessary to inject fresh water in time, usually every 7 to 10 days. (4) Regular observation of duck dung If undigested nutrients are found in duck dung, feeding of feed should be suspended, which can save feed and prevent excessive water quality. (e) Strengthen the prevention of fish diseases and duck diseases In fish ponds, 1 kg of bleaching powder or 15 kg of quicklime can be used evenly. For ducks, the vaccine should be injected regularly. It is necessary to regularly disinfect the duck houses to prevent the introduction of duck pathogens into the water and indirectly infect the fish. Many practices have proved that it is entirely possible for fish and duck polycultures to win both fish and duck harvests. Yandu County Committee of Jiangsu Province Chen Chundao (Zip Code: 224001)
Raw Noodles,OEM Raw Noodles,instant noodles,Noodles With Raw Materials
Ningxia Shuweixian Potato Food Science and Technology Development Co., Ltd. , http://www.shuweixianfoods.com