In recent years, as the grass carp market has become better, intensive fish farming, especially cages and other intensive culture, has become more common. How to achieve high yield and high efficiency in farming is an urgently needed technology for many farmers. Now combine with the actual to talk about grass carp cage culture technology points: Farming conditions should be suitable For grass carp breeding in cages, the choice of leeward, open water, stable water level, fresh water, non-polluting water sources, and convenient transportation requires the dissolved oxygen in the water, pH value of 7.0 to 8.5, water depth of 4 to 5 meters, and water transparency of 50 Above centimeters, the dissolved oxygen is about 5 mg/L, and the water conservancy facilities in the breeding area are complete, and can discharge energy and irrigation, and are not vulnerable to flooding. Reasonable cage setup The cage should be made of polyethylene material with a double structure. The interior is a non-section cage (closed type). The outside is a nodular cage (open type). The upper cover net is a single layer, and the inner mesh is It is 3 cm to 3.5 cm, and the outer mesh is 4 cm. The cage size can be 5 meters, 5 meters and 2.5 meters. The frame of each cage is made up of 4 bamboos 8 meters long to support the entire cage. The stone is made of long stones and knotted under the four net angles below the cage to make the cage fully in the water. Expand shape. The cage was fixed with a cable and a polyethylene rope with a cable diameter of 4 cm. The cable straddled the water surface. After straightening, it was tied to the fixed pile on the shore. The distance between the two cables was 8 meters. After the cage is fixed by a cable, the upper side of the cage is 20 cm to 30 cm above the water surface. Net cages shall be installed 10 days after the fish species are put into the tank to allow the nets to adhere to algae to make the nets smooth. After the fish species enter the tank, the nets will not be scratched and the fish body will not be easily accommodated when the fish species enter the tank. Easy to crash, easy to scratch. The cages can be set in a single box or in groups. Single box set box spacing 25 meters or more. When set by group, every 5 to 10 boxes are used as a group. They are tandem type, single row or double row, and the inner box spacing is 4 meters. The group spacing is about 100 meters. The orientation of the cages should be perpendicular to the direction of flow. In order to prevent debris from damaging the cage, fences should be placed outside the cultured waters. Fish breeding should be scientific Fish stocking should grasp four aspects: First, fish species should be excellent, fish species require a strong physique, specifications and tidy fins intact, disease-free without injury. Into the box fish species to be healthy, to avoid trauma, to prevent the nets to scrape the fish body mucus, because the mucus of the fish can bind and remove the attached microorganisms and debris, is the fish body to resist the disease the first barrier. Therefore, the fish should be smooth, sticky, and rough should not. When fishing, you should follow the direction of the fish and do not catch it in order to avoid injury. The second is that the specifications should be large. When the fish is released, large-sized fingerlings with a size of 20 cm or more should be placed, which has strong disease resistance, a high survival rate, and a short breeding period, and can be put on the market by the end of the year. The third is the right density. In general, cages are stocked with grass carp at 300 g/tail to 500 g/tail, stocking capacity is about 20/m2 to 25/m2, and cages can be stocked in an amount of 200 g/tail to 300 g. The size of the squid and squid in the tail is 100 g per tail. The fourth is to pay attention to methods. Before entering the box, the fish should be bathed and disinfected to kill the surface parasites and reduce the spread of pathogens. Generally, 3% to 5% of salt water or 20ppm of potassium permanganate can be used for 15 minutes. The timing of stocking is generally late autumn or early winter. When the water temperature is about 15°C, the stocking is better. At this time, the grass carp can still feed after entering the box. There is a recovery period. After the spring is opened, it can be eaten early to increase the growth time of fish and lay a high yield and high efficiency. basis. Feeding should be carefully When grass carp is cultured in cages, it is generally not suitable to feed grasses in large quantities. Because grassy nutrition is difficult to promote its growth, full-grain pellet feeds should be fed to increase the utilization of feed and reduce the contamination of residual baits on water quality. Grass carp can be fed 2 days to 3 days after entering the box, and should be domesticated before feeding, according to the "slow-fast-slow" rhythm and "less-more-less" feeding amount, acclimation for 1 hour per day. After 1.5 hours of continuous domestication for 10 days, normal feeding can be performed when most of the fish can be fed up and fed. The daily feeding amount is 3% to 5% of the total body weight of the fish, which is fed 3 times to 4 times per day, and each feeding is about 0.5 hour to 1 hour. The majority of the fish are fed and walked for the degree. The amount of each feed should also be properly adjusted according to changes in water temperature, weather changes, fish ingestion and activities. In the feeding method, we must pay attention to the "four principles" principle. Feeding takes a small cast and throws a second one after eating. When the fish is not intensely fed, a small amount of slow throw can be made so that the fish with weak constitution can also eat feed to ensure its balanced growth. Grass carp grows fastest when the water temperature is between 25°C and 34°C. It should increase the amount of feeding and reduce feeding or stop feeding when it is rainy, hot, thundery and other bad weather. Green fodder can be fed once a night, sterilized with 1% bleach and put into a cage. The amount of feed should be based on the next day. Daily management should be strengthened The daily management of cage grass carp is critical. Mainly do the following aspects: (1) adhere to the inspection box. Should adhere to the daily inspection box, regular inspection of fish growth, reasonable adjustment of feeding, careful observation, analysis of fish, found problems in a timely manner, and do a good job in cage culture log, record daily water temperature, feeding, feeding, dead fish and Disease situation. (2) Diligent in brush box. Wash the cage once every 10 days to 15 days to remove residual bait dirt and algae, so that the water body can be fully exchanged. (3) check box regularly. Frequently inspect the cages and repair the damaged cages in time to avoid running fish or ferocious fish. In the flood season, it is also necessary to check the strength of the ropes in time, whether the ropes are firm, and whether the nets are deformed. (4) often adjust the box. With the fluctuation of the water level of the reservoir, the cage must be adjusted to a suitable depth and water quality. Prevention of fish diseases should be emphasized First of all, we must adhere to healthy culture, operate according to regulations, prevent disease before they occur. Second, we must do a good job of prevention, do a good job of artificial immunity, generally inject into the box before the injection of grass carp "three major bacterial disease" inactivated tissue tissue paste vaccine and grass carp hemorrhagic tissue pulp inactivated vaccine, with a range of 0.2 ml to 0.5 ml, More than 8 cm of fingerlings can be injected, with the dorsal fin base and pelvic fin base injected. At the same time, the fish species should be sterilized with saline soaked water before entering the tank, and they should be regularly sterilized and disease-prevented. The baits should be fed once every 10 days, and they should be fed for 3 days to 5 days to prevent parasites in the fish. Every 10 to 15 days, each cage is spattered with quick-drying lime and 150 grams to 200 grams of chemical pulp to purify the water. Use pesticides and bactericides every month. In the hot season, bags can be hung around the cage. Bromochlorohydantoin, copper sulphate and ferrous sulfate mixture can be used as the drug. In addition, note that green feed must be sterilized before feeding. Adhere to feeding high-quality feed, do not feed deterioration, expired feed. Cages cultured grass carp are generally susceptible to water mildew, red skin disease, gill disease, enteritis disease, bleeding, etc., when the disease should be properly diagnosed with professional and technical personnel, the right medicine, can not be sick or indiscriminate treatment, man-made losses.
Water treatment agents refer to chemicals used for water treatment. Usually referred to as chemicals used for sewage treatment. Widely used in chemical, petroleum, light industry, Daily Chemical, textile, printing and dyeing, construction, metallurgy, machinery, medicine and health, transportation, urban and rural environmental protection and other industries, the main purpose is to remove suspended solids and toxic substances in water, control the formation of scale, sludge, reduce the corrosion of water contact materials, deodorization, sterilization, decolorization, soft To stabilize water quality and desalination, so as to save water and prevent water pollution. It includes chemicals needed for cooling water and boiler water treatment, seawater desalination, membrane separation, biological treatment, flocculation and ion exchange technology. Such as corrosion inhibitors, scale inhibitors and dispersants, bactericides and algae killers, flocculants, ion exchange resins, purifiers, cleaning agents, pre-film agents and so on. The main products of water treatment agents include organic phosphorus water treatment agents, polycarboxylic acid water treatment agents, composite scale and corrosion inhibitors, bactericides and algae killers and other water treatment agents.
Our Services
1. OEM(????) service is available.
2. Fast producing time.
3.Cheapest price forproduces.
4. Reply promptly in 24 hours.
5.Free sample available.
FAQ
Q1: product specifications?
A: we will pack the product specifications according to your needs.
Q2: Do you have some videos where we can see the line production?
A: Yes, we can provide some videos for reference. (yes, we can provide some videos).
Q3: How about payment terms? What kind of payment terms do you have?
A: 30% TT deposit + 70% TT before shipment, 50% TT deposit + 50% LC bala
Nce, Flexible payment can be negotiated.
Q4: what advantages do you have?
A: the quality of the products we offer can be guaranteed and will provide you with very competitive prices.
If you have any questions, please contact with us directly. Organic Intermediate are produced by HRT bearing With High Quality and Good Appearance. Welcome you can visit our Factory. For inqury, please send mail directly to us.
Water Treatment Agent,Trans-Benzylideneacetone 99%,Sodium Allysulfonate,Water Treatment Chemical Agent Shandong Chenyi Environmental Protection Technology Co.,Ltd , https://www.chenyichemistry.com