Nowadays, many farmers in the process of breeding aquatic products, due to the lack of their own farming techniques and farming experience, a large number of bait and fertilization in the breeding process, resulting in water quality aging and deterioration, which is very unfavorable for water production, so today Xiaobian In other words, the water body control technology that maintains the "live, tender, and cool" of the pool water to achieve the purpose of increasing production and increasing efficiency is as follows. First, water source disinfection Aquaculture water requires sufficient water and fresh water, and is not contaminated by pathogenic organisms, industrial waste, and domestic sewage. Generally, water sources such as streams, reservoirs, and groundwater can be used as water sources for aquaculture. If there are pathogens or enemies in the water source, you can use 25-30mg/L quicklime, or 1mg/L bleaching powder, or 0.5mg/L 90% crystal trichlorfon in the reservoir first. Filter through sand filter or 60-80 mesh sieve and enter the culture pond. Second, timely add new water to prevent water body from being over-fertilized The fertility of the water body should be moderate, and the plankton will increase after the water and fertilizer, which is conducive to the growth of the carp. However, if the water quality is over-fertilized for a long time, it will easily produce a large number of harmful microorganisms. These harmful microorganisms will produce a large amount of harmful substances (such as ammonia nitrogen, nitrite, hydrogen sulfide, etc.), affecting the healthy growth of fish, and causing fish in severe cases. death. Therefore, it is necessary to add new water in a timely manner. During the peak season of fish growth (May-September), water is added every 7-10 days, and water is added every half month in early spring and late autumn, each time adding 30cm. At the same time, according to the water quality and water level of the pool water, the water can be changed once, and the water exchange capacity is 30cm. Water exchange is beneficial to reduce the water content of the pool water and the concentration of harmful organisms and toxic substances, thereby reducing the adverse effects on fish. Third, the adjustment of pH The pH value is an important indicator of the quality of the reaction. Generally, the pH of fish growth is between 6.5 and 8.5. When the pH value is unstable, it will affect the self-purification ability of the water body, thus affecting the growth and reproduction of aquatic organisms. When the water quality is too high, the pH value is often low. After the fish is cultured for a period of time, the pH of the pool water is also low, so pH adjustment is required. The specific operation is as follows: 15m of water per acre is sprayed with 15-20kg of quick lime to adjust the water quality. Fourth, the regulation of dissolved oxygen In general, the dissolved oxygen in water, fish, shrimp and crabs should reach 3mg/L and 5mg/L respectively, and below these indicators is not conducive to the growth of fish, shrimp and crab. Dissolved oxygen also changes in one day. The lowest oxygen in the morning before dawn, the highest dissolved oxygen in the summer at 2 noon, and the large amount of feeding in the breeding process will also cause the water quality to dissolve and reduce the dissolved oxygen. Therefore, in the process of breeding, it is necessary to timely add new water rich in oxygen, and start the aerator at 2 o'clock in the absence of oxygen before dawn and increase the dissolved oxygen in the pool. Five, sediment regulation The sediment contains fish excrement, residual baits, biological corpses and other organic matter. These substances will produce a large amount of toxic and harmful substances such as ammonia nitrogen, hydrogen sulfide and nitrite in the process of decay, which will seriously affect the growth of aquatic organisms. Reproduction, so it is necessary to take appropriate measures to improve the quality. The specific operation is: after the pool is dried every year, the thick mud is removed and the sediment 10-20cm is kept. Before the fish is released, the pond should be thoroughly cleaned with 125-150kg/mu of quicklime. The quicklime can kill the pathogens in the sludge at the bottom of the pond, increase the alkalinity, and facilitate the release of nutrients in the sediment, thereby improving the water body's fertilizer and nitrogen. The use of nutrients such as phosphorus; in the breeding process, the hemp rope can be used to stir the bottom of the pool every 10 months on a sunny day at 10 am, so that the convection on the pool water, nutrient salts and dissolved oxygen are evenly distributed; The machine, especially at noon on sunny days in summer and autumn, can also achieve the above effects by starting the aerator for 2 hours. 6. Properly mixed filter-feeding fish Plankton feeding on plankton in the water can reduce the fertility of the water body and reduce the oxygen consumption of other organisms in the water. Therefore, proper polyculture of filter-feeding fish can achieve the purpose of improving water quality, while the production of filter-feeding fish also increases income. 7. Delivery of beneficial microbial preparations As a biological regulator in water, microbes have improved water quality, inhibit the reproduction and growth of harmful organisms, rapidly degrade organic matter in pool water, increase the dissolved oxygen content of water bodies, and reduce the ammonia nitrogen content. It also provides nutrients for phytoplankton and promotes the proliferation of phytoplankton. At present, the microbial preparations used in aquatic products include photosynthetic bacteria, Bacillus, nitrifying bacteria, EM bacteria and the like. Shaanxi Kang New Pharmaceutical co., Ltd. , https://www.kangnewpharmas.com
How does the pond keep the water, "live, tender, cool"? Pond water body regulation technology
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