2. Prepare the seedlings before laying seedlings Before disassembling the seedlings, disinfect the ponds and remove harmful organisms such as miscellaneous fishes at the bottom of the pond. The clear pond time is in the middle and late March. After clear ponds, concealed objects should be placed in the bottom of the pool, such as waste tires, waste asbestos tiles, and other easily-cleared materials, which provide hiding places for shrimp oysters and reduce the residual rate. Underground water in the pond can be used for underground water or water sources such as rivers, lakes, reservoirs, etc. Water with a certain hardness is more suitable for the growth of Abbey shrimp. When entering the water, add a strainer (such as 80 mesh nylon wind pocket) to the inlet to remove predators from wild fish such as fish eggs and small fry. The first time the water is about 0.5 meters, shallow water level is conducive to rapid increase in water temperature. After the water is flooded, fertilizer ponds should be used to cultivate the water quality. Usually, 0.0667 hectares, ie 1 mu, is applied to 75-100 kg of fermented chicken or pig manure. Ten to 15 days after the fertilizer was released.
3, seedlings and seedlings are planted according to the water temperature conditions, generally in April when the water temperature reaches 13 or more can be cast seedlings. The number of seedlings to be planted was about 3 to 4 cm per hectare. Transporting seeds can be transported dry or in inflatable plastic bags. When the seedlings are cast, the seedlings should gradually adapt to the pond water temperature within half an hour in advance so that the difference in the environment before and after the seedlings are placed cannot exceed 2C.
4. Feeding management According to the omnivorous characteristics of Abyssin shrimp, daily feeding is mainly based on self pelleted feeds, supplemented with fresh live feeds, such as minced snails and wild fish, as well as small amounts of vegetables. The daily feeding amount accounts for 5%-8% of the shrimp body weight. The general principle is that it is a small number of multiple times. It will be less in the daytime and more in the evening. The amount of night feeding will account for 70% of the whole day. Usually should try to avoid the existence of residual bait, in order to facilitate grasping the amount of feeding, you can put a small plate in the water, and put some food in the dish, check the remaining condition of the bait before feeding again, such as the remaining bait more You can postpone feeding and reduce the amount of feeding. If there is no remaining food in the dish, it can be appropriately increased. It is better to have a slight surplus in the dish at the time of the next feeding. Pay attention to spoiled food corruption.
5, water quality management In the breeding process, as the temperature continues to rise, we must continue to add water to raise the water level of about 10-1.2 meters, but also pay attention to every 1 week or so plus l/5-l/3 new water, The water temperature should be controlled between 20-28 and the transparency should be less than 30cm. The lower transparency can prevent Abby shrimps from interfering with each other and ensure a high survival rate. In addition, in the breeding process can also be additional fertilizer in the water body, generally every half a month to apply 4 kg of calcium phosphate per hectare, this can cultivate the natural food organisms in the water body, maintain the balance of calcium and phosphorus in the water, provide good for the growth of Abbey shrimp surroundings.
6. Fishing and transportation After 6 months of cultivation, most of the Abbey shrimps have reached the sales specifications. When the water temperature drops below 13 (in January), harvesting can begin. During the fishing, the pool water should be drained as soon as possible. Otherwise, if the lower water level is maintained for a long time, it will cause the Abbey shrimp to dig a lot and hide, which will cause difficulty in fishing. In addition, nets can also be used for fishing. However, this method is not suitable for ponds with irregular bottoms. It is not easy to catch shrimp and it is also easy to cause many shrimp injuries. As Abyss prawns have better drought resistance, they can be transported by dry method. When transported, they can be placed in bamboo baskets or plastic foam packaging boxes to hold water-retaining sponges, to insulate shrimps from straw or aquatic plants, and then add ice cubes or Bags of ice kings sold in stores are generally transportable for more than 60 hours and still have about 90% survival rate.
Air purification activated carbon is a kind of activated carbon, the use of high-quality activated carbon specially treated for the special purification of contaminated air, so called air purification activated carbon. Only the hardness, high strength, porous pores of activated carbon as air purification activated carbon
Activated carbon is a carbonaceous material with relatively high carbon content and relatively developed voids, such as coal, shell, wood, bone, petroleum residue and other raw materials, after carbonization, and then through 800 to 1500 degrees of activation of high temperature, the formation of micro Hole and the hole, so that its specific surface area and adsorption capacity to meet certain requirements. Ordinary activated carbon production is generally divided into two processes, the first: carbonization, the second: activation. Activated carbon is divided into decolorization of activated carbon, water purification activated carbon, air purification activated carbon, heavy metal recovery of activated carbon hundreds of species, use and its wide range of science is currently the most effective adsorption material.
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Activated carbon can be used as air purification carbon. Shell charcoal, coal can be used as raw materials for air purification of carbon. Coconut shell activated carbon which best.
Air purification activated carbon, the choice of high quality wood or coconut shell, through the depth of activation and unique pore size adjustment process, the activated carbon has rich pores, and the size of the hole is slightly larger than the toxic gases, specific surface area> 1300 m2 / g, benzene, Formaldehyde, ammonia and other toxic and harmful gases with high efficiency adsorption capacity, which can effectively remove indoor air of gaseous pollutants and harmful malodorous substances, so as to achieve the purpose of reducing pollution and purifying the air. Now Division I introduced spherical and column-shaped products according to different applications, so easy to desorption regeneration, low loss, compared with the traditional particles or powdered activated carbon has a higher life, can greatly reduce the cost of users. Therefore, whether in terms of efficiency or consumer perspective, activated carbon are all the best air purification filter.
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