In recent years, with the rapid development of industry and agriculture, a large number of factories and municipal sewage directly drain ponds, reservoirs and other water bodies, making lakes and eutrophication more and more serious. Water quality has gradually deteriorated, and diseases have occurred frequently. There have been dead fish phenomenon and fishery production has been reduced. The economic losses are extremely heavy. How can the contaminated reservoirs and ponds conduct fish farming? I. Reservoir fish culture technology 1. Sewage interception and storage. In the proper location of the sewage into the reservoir and pond, a prefabricated warehouse will be built in conjunction with suitable topographical features. Sewage is subject to measures such as sedimentation, biological oxidation, and exposure in this reservoir. Some of the pollutants are degraded, and some of the pollutants can be transformed through the absorption and utilization of large-scale aquatic plants. At present, some domestic reservoirs have adopted this method. 2. Transplant aquatic plants to improve water quality. Large aquatic plants and water hyacinths, water hyacinths, goldfishes, and malayi seeds have been widely used for wastewater treatment and many successful reports have been reported. Studies have shown that the root exudates of large aquatic plants inhibit the growth of algae, reduce nutrients in the reservoir, degrade and convert pollutants, and play a role in purifying water quality. Therefore, transplanting aquatic plants in contaminated reservoirs is part of the wastewater biological purification system, which can improve water quality and restore ecological balance and greening environment. 3, stocking fertilizer water fish. Carps are mainly eaten by plankton, and they like fertilizer and water, so they are the best kind of fish to purify eutrophication reservoirs. Second, pond fish farming technology When the contaminated water body is used as a water source for pond fish farming, the following measures shall be taken: 1, impounding water purification. Based on the purification of the reservoir water, a reservoir should be built near the pond, or an unused pond should be used for the second stage of water purification, so that the above water body can be deposited and purified in the reservoir and then used as aquaculture water into the pond. 2, "a clear and second elimination." First of all, we must eliminate silt in the pond and turn it into sun-dried soil. In addition, we must disinfect the pond, disinfect the water body and disinfect the fish body. Conventional drugs such as quicklime, bleach, potassium permanganate, and copper sulfate can be used, and this work is carried out in front of the fish pond. 3. Transplant "Ying" water purification and oxygenation. Transplanting aquatic plants such as lindane or duckweed on one side or one side of the pond can play a role in purification and oxygenation, and the effect is obvious. 4, the main fertilizer water-based fish or omnivorous fish, spring autumn catch. Eating planktonic and omnivorous fish is an indispensable part of the food chain. The main eel or squid, and the spring fall catch, is one of the practical modes to obtain stable production and high yield. 5, adding alum, zeolite powder and quicklime. In the pond fish culture process, if the pool water is too turbid and too fat, if necessary, add alum, zeolite powder and quicklime to improve the water quality. 6, regular "internal consumption" to prevent disease. In the process of fish farming, baits are regularly fed to fish, which are mainly made of antibacterial and viral drugs. Disinfecting with water bodies and preventing diseases can result in better results. Herbal Sex Pill,Herbal Formula,Male Enhancement Capsule,Ginseng Male Sexual Capsule Chengdu Jingke Trading Co., Ltd. , https://www.jkherb.com