Cyanobacteria (Microcystis) have become one of the most important hazards for the culture of white shrimp in South America. After a large number of breeding, the water body deteriorated seriously. The toxin released after the death of cyanobacteria seriously harmed the health of the shrimp (the cyanobacterial toxins are much more harmful than the four major ones) and may cause white stools, poisoning, and stealing; When extreme weather or changes in water conditions occur, a large number of deaths will result in the lack of oxygen in the water body. At the same time, a large number of toxins will be concentrated and release, which will easily lead to catastrophic consequences. Therefore, we share some of our experience in killing cyanobacteria in shrimp ponds. Blue algae management during shrimp About 1 month after the shrimp enters the pond, it is the period with the strongest stress response. During this period, the hepatopancreas of the shrimp has not yet fully developed and matured, and the function of the body is also relatively poor, so it is easily disturbed by the external environment. This period is the time when shrimp is most prone to massive deaths. During this period, a large number of breeding of cyanobacteria may lead to serious consequences. At the same time this time the medication should also pay considerable attention, try to avoid the use of bromine, chlorine, iodine and other disinfectants. The status of market killing cyanobacterial drugs Now the cyanobacterial drug market is very large, and some products are completely nontoxic to shrimps. In fact, the characteristics of cyanobacterial toxins determine that cyanobacterial drugs that have no side effects are non-existent. The ideal way to kill cyanobacteria is to use slow release technology. The cyanobacteria gradually die, which can avoid the rapid consumption of oxygen in the water and rapid accumulation of water toxins. When a large number of cyanobacteria burst, it is recommended not to use microbiological agents to inhibit cyanobacteria. This is because on the one hand, cyanobacteria have already formed a population advantage. Microorganisms can hardly achieve the desired effect. At the same time, microbial preparations are mostly aerobic and can easily aggravate the water burden. Increase risk. Suggestions on killing blue algae during shrimp time 1. Killed immediately after discovery, and can even be prevented by cyanobacterial clearing before releasing shrimp seedlings. Since the amount of cyanobacteria in the water body is relatively small, the toxicity and oxygen consumption after killing will have little impact on the water body. At the same time, while the use of slow-release technology, cyanobacteria clear the impact on other algae is very small, so this program can be used as a safe choice for the prevention and control of cyanobacteria. 2. If a large number of cyanobacteria have been bred during the shrimp seedling period, the cyanobacteria will be at a certain risk. When the sustained-release cyanobacterial drug is used, the cyanobacterial drugs can be killed in batches. At the same time, there is a function of increasing oxygen and water purification. The reformed drugs, such as "super strong Anbao" or using "oxygen tablets" for oxygenation at the bottom, our practice has proved that this program is effective to reduce the damage of cyanobacteria. At the same time, after killing the algae (after 3 days to 4 days of application), the shrimp ponds were splashed with organic acids (to enhance the anti-cyanobacterial toxicity and anti-stress ability of the shrimps), which was effective in reducing the toxicity of cyanobacterial shrimp seedlings. In short, killing cyanobacteria during shrimp seedlings has a certain risk. I have seen many deaths of shrimp seedlings caused by inappropriate killing of cyanobacteria, so I hope that the majority of farmers will pay enough attention. One month after entering the pond to kill cyanobacteria At this stage, shrimp has undergone a liver-transplant period, its constitution is obviously enhanced, and the general changes in the external environment are not enough to cause serious harm to it. At this time, if cyanobacteria can be directly used to kill the "blue algae", in conjunction with promptly changing the bottom and pouring antidote drugs, it can be a good solution to the hazards of cyanobacteria. At this time, it is important to pay attention to kill cyanobacteria, do not kill the cyanobacteria when the shell is concentrated in the shrimp, then the resistance of the shrimp is poor, improper use may affect shelling, resulting in death. Instrument Sample Cups,Ral Sample Cup,Ral Instrument Sample Cup,Ral Instrument Sample Container Yancheng Rongtai Labware Co.,Ltd , https://www.rongtailab.com