What Is Sustainable Aquaculture?

Aquaculture is the study of aquaculture production activities.

Aquaculture

Cultivate students with basic theoretical knowledge and experimental and practical basic skills in biology, aquatic animal and plant breeding, and diagnosis and control of aquatic animal and plant diseases. They can engage in the comprehensive development and protection of aquatic and aquatic plant resources, economic animal and plant breeding, and disease. Prevention and control

Grades 1 and 2 include college English, computer,

Students in this major mainly study the basic theories of biology and water environment science, as well as basic knowledge in aquaculture, fisheries economics and management, etc., and are subject to biological and chemical experimental teaching, practical links in aquaculture, and microcomputer applications. Basic training in aquaculture economy, plant breeding technology, nutrition and feed and disease control.

There are several aspects:

1. Have a solid basic knowledge of mathematics, physics, chemistry, etc .;

2. Master the modern

Major: Aquaculture

Level: Upgrading

Type: Distance Education

Entrance exam: College Chinese, College English, Advanced Mathematics

Duration of study: 2.5 years

Credit: 80

Category: Biology

Graduation Production Practice, Graduation Practice Thesis, College English (II), College English (III), College English (Unified Examination), College English (I), Fundamentals of Computer Application (Unified Examination), Aquatic Animal Diseases (Undergraduate), Aquatic Animal Nutrition And feed (undergraduate), aquatic animal breeding (undergraduate), aquatic product quality quarantine and inspection (undergraduate), aquatic food science (undergraduate), aquatic microbiology (undergraduate), aquatic economic plant cultivation (undergraduate), aquatic biology ( Bachelor), shrimp and crab breeding (undergraduate), introduction to modern distance learning, information retrieval and utilization (undergraduate), aquaculture water environment chemistry (undergraduate), aquaculture ecology (undergraduate), fish ecology (undergraduate), Ichthyology (undergraduate), fish breeding (undergraduate), outline of modern Chinese history (undergraduate), etc. ^[2]

In order to pursue fish production, some farmers have blindly increased the stocking density, which has gradually increased the number of harmful substances such as bait and feces in the pond, and the water body has become more eutrophic, which in turn has produced a large number of harmful algae, causing water quality to deteriorate and affecting fish Growth, severe cases will cause death from fish poisoning.

[English common name]: Prometryn, Gesagard, Caparol, Merkazin, Polisin, Prometrex

[Chemical name]: N, N`-two

Wettable powders contain original drugs, carriers and fillers, surfactants (wetting,

According to the actual needs of the spray characteristics, in order to prevent the nozzle from clogging, the main pursuit is the suspension rate and the stability of the suspension .

Before sowing cotton or before emergence after sowing, use 50% wettable powder 100-150 grams per acre or 48% per acre

Ranking of Aquaculture Majors, 2013-2014 ^[3]

Colleges and universities, aquatic product research, production development and management at all levels, aquatic product environmental protection, foreign trade customs and other departments. ^[4]

Raise fish first. Water is the environment that fish depend on. Better water quality can reduce the occurrence of fish diseases and is more conducive to the growth and survival of fish. In actual production, the quality of water can often be judged by changes in water color, ammonia nitrogen content, and sediment color.

1. The red color of red water ponds is mainly caused by diatoms or diatoms becoming dominant populations, which is usually not a big deal. However, once the weather changes, causing a large number of algae to die, toxins will be produced and the water body will even deteriorate. Fish poisoning died. Therefore, once the pond water turns red, it must be improved in time. When the weather is fine, first sterilize with Sijian or quaternary ammonium salt iodine, and then spray with hydrogen peroxide, strong chlorin, etc. once on the second day, and then topdress as needed after 3 days.

2. Black water When the pool water is black, it indicates that more organic matter in the pool has not been converted in a timely manner, such as bait, animal residues, excreta, humus on the bottom of the pool, etc. After these materials are corrupted, a large amount of dissolved oxygen is consumed, which is likely to produce sulfur Harmful substances such as hydrogen, ammonia nitrogen, and nitrite can endanger the health of aquatic animals, reduce their immunity, cause infection by pathogenic microorganisms, and even cause fish ponds. Once such black water is found, chlorine-containing drugs such as hydrogen peroxide are applied once on the first day to the second day to oxidize too much organic matter. After 3 days, splash it once with Baifeng Energy Pure Water King Pond.

3 White turbid water When the pond water is white turbid, it indicates that there are too many organic oxygen-consuming substances in the pond. Relatively speaking, there are fewer microorganisms that decompose large organic matter into nutrient salts, causing phytoplankton to fail to obtain nutrients and cause a large number of deaths. The material circulation in the pond is damaged, the water in the pond is close to aging, and there is a severe lack of oxygen. The fish in this pond is generally prone to floating heads before the sun rises from dawn to dawn. When the pond water was found to be white and turbid, apply "Shuibao oxygen package" on the first day to make the organic matter oxidize in time after flocculation. On the second day, apply Baifeng Aquatic Products once to increase the active microorganisms in the pool and promote Water substance circulation.

4 Feed high-protein feed, chilled meat, or intensive fish ponds that feed on live fish such as crab ponds, prawn ponds, mullet ponds, and catfish ponds with high ammonia nitrogen content. After high-protein diets, the ammonia nitrogen content in the metabolites is too high, which affects the aquatic animals' feeding and growth, reduces their immunity, and easily causes parasite or pathogenic microorganism infection. Therefore, intensive ponds that feed on high protein feeds, chilled meat or live fish, apply ammonia net or pond bottom net once every 10-15 days to degrade ammonia nitrogen in a timely manner. If you pass the water quality test and find that the ammonia nitrogen content in the pool water is seriously exceeding the standard, you should timely apply ammonia net and oxygen treasure to the pool, and then spray once with fertilin, fertilizer and water treasure on the third day to increase the active microorganisms in the pool and promote planktonic The reproduction and growth of living things enhance the material circulation ability of water bodies.

5. Due to the humic deposits in the pond water, animal debris, bait, and feces sink into the bottom of the pond to decompose and decompose, causing the pond bottom mud to become black and stinky, which can easily produce methane, hydrogen sulfide, nitrite and other harmful substances It is easy to pose a threat to aquatic animals living in the middle and lower layers, such as catfish, grass carp, herring, crab, shrimp, catfish and other species. In severe cases, aquatic animals in the lower and middle layers of the pond often float in the upper and middle layers, and do not want to go to the normal living water layer. If the above situation occurs, Baifeng Aquatic Po should be applied once every 10 to 15 days to increase beneficial microorganisms, accelerate the transformation of organic matter or humus that sinks to the bottom of the pond, and avoid black sediment, odor and methane production, Harmful substances such as hydrogen sulfide and nitrite. It is found that the sediment in the pond is black and the water is stinky, and water change measures should be taken immediately. After the water change, the active water purification king is applied on the first day and the fast-acting fertilizer Shuibao is applied on the second day to adjust the water quality. ^[4]