In the process of raising shrimp, it can often be seen that there are many pieces of clay skin floating on the surface of the shrimp pond. When it is decomposed, it easily causes oxygen deficiency and easily produces many toxic substances, which affects the growth of the shrimp. The causes, hazards and treatment measures of mudstone production are described below for reference.
First, the formation of mud and harm
Mud skin is caused by over-clean water, improper fertilizer and water. If chemical fertilizers are used, it is extremely easy to deposit on the bottom, so that the benthic algae will multiply and form a layer of mud. Most of them are muddy in early spring, and as the temperature rises, it is often found in shrimp ponds that there is a thick layer of mud on the downwind of the pond with a lot of foam and organic matter. It is common in some ponds where shrimps, crabs and shellfish are mixed. This phenomenon is particularly common. The development of mud will generally rise to a certain level, and it will easily cause oxygen deficiency when it is decomposed, and it will easily produce a lot of toxic substances, affecting water quality, and it will also affect the growth of shrimp. Where there are muddy ponds, water quality is generally leaner, and sometimes mosses are prosperous. There are two types of mud:
1, dark green mud
This mud is creamy and difficult to disperse, and sometimes it can be lifted by hand. Grinding by hand rubs the palm of the hand into a greasy, dark green color and careful observation of filamentous algae. This kind of mud is some large planktonic algae or moss parts that float on the water after the death, with the wind accumulated in the downwind place made, in which case the general water quality is thin, not easy to fertilizer, pH value is high.
2, black or dark brown mud
This kind of muddy skin feels rough, smashed and crushed. It is lumpy or flaky on the surface of the water. There is a lot of foam on the mud. The color is dark gray or dark brown. The water is lean or turbid, and there is a large amount of foam under the wind when there is a storm, and the ammonia is high in water. This mud is due to the death of large amounts of algae or the death of benthic algae. In the absence of oxygen, a large amount of methane bubbles are formed. With the gradual increase of bubbles, the benthic algae plate is torn to form on the surface of the water.
Second, several more effective treatment measures
Several effective treatment measures in production practice over the years are now described as follows:
1. Choose sunny and sunny morning, mix the zeolite powder and super concentrated photosynthetic bacteria king and soak for half an hour, and the whole pool will splash evenly. Zeolite powder uses 10 to 15 kg per acre; super concentrated photosynthetic bacteria will be used according to the instructions on the dosage.
2. Use amino acid water to quickly cultivate the water color, use EM-live bacteria to stabilize the water quality; Quanchiposa water safety and fast oxygen and other treasures (in accordance with the instructions on the dosage).
3. The entire pond is thrown out of the algae and extinct (according to the dosage in the instruction manual).
4. The first step is to sprinkle the black soil bottom reform (choose good humic acid sodium bottom improver in the market, 10 kilograms/bag use 4 to 5 acres of rice), the black soil reform on the one hand can degrade ammonia sludge and other substances produced by the adsorbed mud. At the same time, it can make the water darker, reduce the transparency of the water body, destroy the conditions of mud skin production, and create favorable opportunities for the decomposition of living bacteria; after two or three hours, it will be treated with water purification bacteria 50g/mu, through its powerful decomposition of organic matter capacity. Decompose the mud skin (use a brown sugar and feed powder mixture for two hours to activate the effect is better), according to the above method can generally be effective decomposition of mud. The next morning, according to the experience of various farmers, choose the fertilizer and water products with good results in time to restore good water quality.
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