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(I) Technical Overview The Shandong Institute of Freshwater Fisheries has been engaged in the research and development of factory-based flowing water aquaculture facilities and equipment for more than 20 years. The technology is mainly researched by the water-feeding fish-breeding system facilities [Lu (Fishing) Section (Science Research) No. 85006]; high-efficiency water treatment facilities for flow-through fish-breeding systems; temperature-feeding water aquaculture tank aerators [patent number: ZL93230015.4] and The system consists of a number of scientific and technological achievements and patents for the development of a self-discharging system for warm-water fish ponds. It can make full use of the waste heat and geothermal resources of the plant to cultivate, breed, breed, overwinter and preserve the seedlings of tilapia, freshwater whitefish, silver carp, beard carp and Macrobrachium rosenbergii, as well as early production of fish fry. Live aquatic products are raised and maintained, and wholesale and retail live fish banks are carried out. According to local conditions, according to local conditions, it is possible to provide a variety of fish culture methods such as ordinary flow water culture, circulating water fish breeding, aerobic water fish farming and automatic sewage disposal. In engineering, machinery and aquaculture, it is possible to provide a complete set of industrialized fish breeding project design, and supporting aerobic, feed processing, water supply and drainage and power supply mechanical equipment and broodstock breeding, fry and fingerling breeding, adult fish breeding technology.
(B) Market Potential and Benefits Prediction This technology mainly raises excellent fish and shrimp economic varieties. With the gradual improvement of people's material life, the flow of fish farming has a wider range of adaptability and development prospects. From the point of view of the existing fish farm management, good economic benefits have been achieved. The profit margin of general investment and the output value are about 20.00% and 25.00%. In particular, for grain production and cotton-producing areas, feed prices are low and stable, and the first use of geothermal resources for winter maintenance of fish and shrimp will create good operating performance and have great potential for development.
Chen Youguang (Shandong Institute of Freshwater Fisheries, Jinan 250117)