In summer, the weather changes greatly, alternating between sunny and rainy weather, rapid changes in water temperature, more material in the bottom of the pool, poor self-cleaning function of the water body, and unbalanced self-balancing effect. As a result, hypoxia, stress, and poisonous and harmful substances may be exceeded, leading to crabs and jaundice on the grass. White fish floating head, and even poisoning died. In response to these phenomena, the following points are summarized:
First, the impact of weather changes
1. In summer, sunny and rainy weather occurs alternately, the temperature difference between day and night is large, algae is easy to fall, water quality deteriorates, and the water body often lacks oxygen, which poses a great threat to the breeding objects. It is recommended to change the water a small number of times, usually about 5 cm each time, to enhance the body's self-purification and anti-stress ability. Note that the difference between the temperature of the incoming water and the pool water cannot be greater than 3°C. Otherwise, there will be stress, which will affect the growth and even cause diseases. At the same time, the summer is often high temperature and low pressure, hot weather, the pool of dissolved oxygen is low, so you need to add exogenous oxygen, with nano oxygen + special calcium (or with degrading spirit + ions on calcium, etc.) mixed spill, long effect, dissolved oxygen In water, no side effects, the effect is obvious.
2. In the high temperature season, the cultured object has a long rapid speed, a large amount of feed, a large amount of excretions, eutrophication of the substrate, and rapid propagation of harmful algae, and the density exceeds beneficial algae, easily forming black water, soy sauce water, dark red water, Blue and green water and other dangerous colors. To revise dangerous waters, it is necessary to treat both the symptoms and the symptoms. First, the stress and stress of Ningling and Degradation Resilience should be prevented. The next day, B & A is used to kill harmful algae. The next day, internal water purification is used to remove harmful algal toxins, and then With six antibiotic algae paste + new live bacteria Wang Pei water. Usually pay attention to prevention, often pay attention to the weather forecast, understand weather trends, prepare in advance, such as using stress Ning, high stability C and other anti-stress, maintain pH stability.
3. Summer hot weather, lack of dissolved oxygen and beneficial bacteria, nitrite, ammonia nitrogen, hydrogen sulfide, methane and other toxic and harmful substances often exceed the standard, resulting in chronic poisoning of farmed objects, affecting food intake and growth; so usually should pay attention to conservation of sediment, From the early stage of the cultivation, it began to use regular six-bottom health + grains to change the oxygen at the bottom.
Second, the impact of bottom spoilage
1. After water grass and moss have died, or after submerged grass and vegetable stems are rotted and deteriorated in the water, it is easy to deteriorate water quality, consume dissolved oxygen, lead to insufficient dissolved oxygen, cause pH drop, and produce a large number of toxic substances at the same time. In general, attention should be paid to the improvement of substrate quality. Regularly (2-3 times per month in the early culture period, 3-4 times per month in the middle and later stages of the breeding period), the six controlled bottoms should be mixed with dry granulated grains, or the bottoms should be double modified + degradative spirits. Conservation of sediment, the effect is very good. At the same time, it is also necessary to pay attention to detoxification in the maintenance of sediments, especially when moss and harmful algae will release large amounts of toxins after death, so detoxification or detoxification should be used.
2. Although feces and residual baits are rich in nutrients, they are easy to produce toxic and harmful substances without conversion. Some ponds and ground fishes should be stocked in ponds, and the sediments can be purified to some extent. Too much, use the black gold + powder live bacterium king to change the bottom, decompose the organic matter and convert it into a nutrient source that the algae can absorb. Feeding should be adjusted according to weather changes, changes in water quality, growth conditions of farmed species, and feeding times, as appropriate. In particular, culturing jaundice, high temperature seasonal farmers feed a large number of feed, leading to liver dysfunction and digestive disorders of jaundice, suggesting Every month should be based on the situation of feeding 2-3 meals, when fed in the feed mixed with enzymatic hydrolysis polysaccharide, active garlic treasure, increase the exogenous enzymes to promote digestion and absorption.
Third, the impact of harmful bacteria and viruses
In the high temperature season, the substrate spoilage is easy to breed bacteria, and fresh live bait is also easy to carry bacteria, parasites and viruses. Farmers are accustomed to using chemicals to disinfect and sterilize regularly, and even mix with antibiotics, which not only kills algae, bad water, and defeats the bottom, but also increases the resistance of cultured objects and reduces the immunity and resistance of cultured species.
Therefore, in the high temperature season, we must pay attention to the conservation of sediment quality. We must ensure the safety of water sources and feeds. We must regularly spill Materia Medica and active garlic treasures, and mix and feed golden multidimensional, active garlic treasures, and herbal medicine to improve the immunity and resistance of cultured animals. force. As long as the food is normal, digestion and absorption are good, the respiratory system is smooth, and the body of water is stable, the incidence of the disease will be significantly reduced. "Prevention is the main factor and prevention is more important than cure." For viral diseases, prevention should be emphasized.
Fourth, other matters needing attention
1. Dissolved oxygen is the key, usually pay attention to timely top dressing, maintain algal stability, ensure adequate dissolved oxygen, not only to grow healthy objects, but also inhibit the growth and reproduction of anaerobic bacteria, reduce or eliminate the phenomenon of bottom sediment spoilage.
2. The cultivation of crab ponds and astragalus should pay attention to aquatic grass conservation. Now many lobsters in Jianli and Honghu have nested lobsters. The lobsters in previous years were sold at the end of June, and crayfish were generally sold before the end of October, so the protection of aquatic plants was This is especially important, otherwise there will be no issues at the later stage. It is recommended to keep grass roots and cultivate grass to protect the roots and ensure the normal growth of aquatic plants in the later period.
3. Prevent escape and damage, pay attention to the maintenance and escape facilities at the edge of the pond, and pay attention to catching frogs and rats in the crab pond to eliminate the enemy’s damage in time.
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