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Strengthen shrimp pond management after heavy rain
After the heavy rain, the ecological environment of the pond of Penaeus vannamei will deteriorate. If no active measures are taken, it may cause great losses. The following measures can be taken to strengthen the management of ponds in South America after heavy rain. After opening the aerator, the amount of dissolved oxygen in the shrimp pond water is significantly reduced, and the aerator must be continuously opened to maintain the normal growth and water ecological balance of the shrimp. Opening the aerator can break down the stratification of water temperature and salinity and reduce stress on shrimp. Zeolite zeolite powder is a good bottom modifier. It can quickly increase oxygen, and has the function of adsorbing foreign matter, improving the quality of bottom material and water quality. The amount of zeolite powder is 10-20 grams per cubic meter of water. In addition, 2 kg of glucose and 200 g of vitamin C can also be put into the pond per acre. Ingestion of Vitamin C In severe weather such as storms, the consumption of vitamin C by shrimp is 2.5 times that of normal weather. In severe weather, shrimp is most vulnerable to vitamin C deficiency. You can add 2‰ to 3‰ of vitamin C to your diet. Vitamin C is added manually, and vitamin C is first dissolved and evenly sprayed into the artificial compound feed. After half an hour of drying, spray the vegetable oil (bean oil, peanut oil, rapeseed oil, etc.) or aquatic products at a rate of about 1 part of the feed. Use cod liver oil. Combined use of photosynthetic bacteria and EM bacteria, the amount of feed is 3 ‰ ~ 5 ‰. Using microbial bacteria to improve the quality of the bottom and water quality After a long period of heavy rain and heavy rain and typhoons, the ecological environment in shrimp ponds has been hit hard, even destroying the microecological balance. Microbial bacteria should be used at this time to repair the micro-ecological environment. (1) Use photosynthetic bacteria and EM bacteria. The main function of photosynthetic bacteria and EM bacteria is to eliminate harmful substances such as ammonia nitrogen, nitrous acid, hydrogen sulfide, and organic acids in water bodies, and to improve the quality of water bodies. However, they have little effect on the cultivation of algae. Therefore, photosynthetic bacteria and EM bacteria are used to improve water quality. It works, but it does not have much effect on the modified substrate. (2) The use of chemical heterotrophic bacteria to improve the substrate, the chemical and heterotrophic bacteria on the market are probiotics, live-can and so on. This type of bacteria can use macromolecule organic substances and at the same time mineralize organic substances to form inorganic salts, providing nutrition for unicellular algae. The photosynthesis of unicellular algae in turn provides oxygen for the oxidation of organic matter, the breathing of microorganisms, and the breathing of shrimps. Cycle back and forth, constitute a benign ecological balance. When using microbial bacteria, photosynthetic bacteria, EM bacteria and chemical heterotrophs should be used interchangeably. Usually every 10 to 15 days once, if the water quality should be appropriate to increase the amount. Disinfectants should not be used 3 to 5 days before use and 3 to 5 days after use.
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