The excessive water quality in the middle and later stages of breeding is a Common problem in shrimp farming. In general, when the shrimps are bred for about two months, the turbidity of the water caused by too much organic matter causes the phenomenon of black water and darkness. The decomposition of a large amount of organic matter requires the consumption of a large amount of dissolved oxygen, and the chemical oxygen demand and biological oxygen demand have greatly exceeded the load of the water body, resulting in frequent hypoxia in the shrimp. In addition, organic matter decomposes in the presence of less dissolved oxygen to produce large amounts of nitrogen-containing compounds such as ammonia nitrogen and nitrite, which seriously affect the growth of shrimp. First, the organic matter caused by excessive water quality regulation 1. The color black, dark, but the ammonia nitrogen, nitrite content is less, can be used alone compound bacteria preparation such as "live water", according to 250 ml / (million m) full pool Splashing, generally the third day water quality can become refreshing, transparency has increased in varying degrees. 2. If the water is dark and accompanied by ammonia nitrogen and nitrite exceeding the standard, pungent ammonia may be smelled in the water, and the shrimp will appear abnormally beating. It is necessary to dry it with 1 kg/(mu m) of “Zhong Bao†directly. Use its strong ion exchange effect to eliminate ammonia nitrogen, nitrite, and heavy metal ions from the water, and then use "live water" Quanchiposa after two hours. 3. If the water level is deeper or the silt layer is thicker in the middle and later stages of the cultivation, use "live water" 250 ml/mu to carry out the Quanchiposa, and at the same time press the "Fei Shui Yi Yu Bao" at 1.5 kg/mu ~ 2 kg/mu. The amount of dry sprinkling into the bottom of the pool. When “Fei Shui Yi Bian Bao†is used as fertilizer, the large-grain organic matter is rapidly decomposed into inorganic nutrients by viable bacteria to accelerate the effect of fertilizer and water; when the granular viable bacteria are thrown into the bottom of the pool, the organic fertilizer provides a medium for the growth of living bacteria. , so that the proliferation of live bacteria have sufficient nutrients, do not pollute the substrate. Second, the algae caused by excessive water quality control Shrimp aquaculture, the decomposition of organic matter in water provides algae for the growth of a large number of nutrients, so some shrimp algae breeding too rich, algae photosynthesis during the day will release a lot of oxygen, but algae Re-breathing in the evening consumes a lot of dissolved oxygen, so the shrimp pond is prone to hypoxia during the second half of the night or cloudy days. The over-water-heavy response caused by excessive algae is to kill a portion of the aged algae with a low dose of complexed copper to increase transparency. If you can use "Cyclone" 500 g / (acre) ~ 600 g / (acre) Quanchiposa, use an aerator to prevent oxygen deficiency, a small amount of new water after 24 hours, this treatment The method is safer for middle and late shrimps.
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