The precise definition of efficient fishery, who proposed the matter of efficient fishery! 100

The general points of efficient fishery construction work (of course, not in detail):

The first is to focus on leakage prevention technology, transform freshwater aquaculture ponds, and promote water treatment technologies such as microecological preparations.

Second, the factory farms with suitable conditions and good infrastructure will be transformed into water treatment facilities and a full-cycle aquaculture model will be established.

The third is to intensify the development of fisheries in saline-alkali land and use brackish water for aquaculture.

Fourth, for the purpose of purifying water quality, we can continue to release filter-feeding and herbivorous fish, and develop ecological fisheries that combine agriculture, animal husbandry, and fishery, such as rice and fish farming, lotus root fish intercropping, and aquatic plant cultivation.

According to the Fisheries Law, the guidelines and policies of China's fishery production are ( ) aFishing-based, fishing, breeding, processing at the same time, according to local conditions, each with its own focus on BBreeding-based, breeding, fishing, processing at the same time, according to local conditions, each with a focus on C

Fishing-based, fishing, breeding at the same time, according to local conditions, each with a focus on dBreeding-based, fishing and processing at the same time, according to local conditions, each with its own focus to view the answer analysis [correct answer] b

Answer analysis] According to the "Fishery Law", China's fishery production is mainly based on aquaculture, breeding, fishing, and processing at the same time, according to local conditions, each with its own focus. （p223）

Knowledge points of this topic: legal provisions on land use and protection

The natural characteristics of <> fishery resources are self-discipline and renewal, mobile migration, shared wealth, and natural variability. Fishery resources refer to the total number of economic animals and plants such as fish, crustaceans, shellfish, algae and sea mammals that have development and utilization value in natural waters. 70% of the fishery resources that have been developed and utilized are directly eaten by people, such as fresh products, frozen products, canned chains, salted, dried and other processed products.

In the degree of exploitation and utilization of fishery resources, it can be divided into depletion, overutilization, full utilization, and underutilization.

1. The characteristics of fishery resources include:

1. The characteristics of fishery resources include self-discipline and renewal, migration and migration, common wealth and natural variability. Fishery resources refer to the natural waters with the value of development and utilization of fish, crustaceans, shellfish, algae and sea mammals and other economic animals and plants as a whole, fishery production is the natural source and foundation, also known as aquatic resources. According to the waters, it is mainly divided into two categories: inland water fishery resources and marine fishery resources, of which fish resources occupy the main position, there are about 30,000 species, and the estimated catchable amount is 100 million tons.

2. Among the fishery resources that have been developed and utilized, 70% can be directly eaten by people, such as fresh products, frozen products, canned products, salted, dried and other processed products; 30% is processed into feed fishmeal, industrial fish oil, medicinal cod liver oil and other comprehensive utilization products.

3. In the degree of development and utilization of fishery resources, it can be mainly divided into:

Utilization depletion, i.e., the difficulty of returning the amount of resources to normal levels over a long period of time.

Overutilization, i.e., a resource that has declined, but can be restored with certain protective measures.

Full utilization, that is, it can adapt to the natural regeneration capacity of the resource and maintain the most suitable and sustainable yield.

Underutilized, i.e., resources are still being utilized.

2. Where are fishery resources mainly concentrated?

1. Fishery resources are mainly concentrated in the coastal continental shelf sea area, that is, the part of the sea area that extends from the coast to a depth of about 200 meters underwater. Although continental shelf waters cover only one of the total area of the ocean, they account for more than 90 per cent of the world's total marine catches. This is mainly due to the concentration of sunlight in the area, the strong photosynthesis of organisms, and the very rich nutrients brought by the rivers that flow into the sea, so the plankton is abundant, and these plankton are the bait for the fish.

2. There are certain provisions on the fishing ban area and fishing ban period when capturing fishery resources. According to the various life stages of the catch object and the specific conditions of spawning grounds, wintering grounds and juvenile development, the fishing ban area or fishing ban period or protection area is stipulated, which is mainly to protect the broodstock for normal reproduction and the growth of juvenile and juvenile fish, so as to protect the smooth wintering of fish.

3. Stipulate the prohibition of fishing gear and fishing laws. Fishing gear that seriously damages fish eggs, juveniles, or causes a large number of fish catches to die will destroy fishery resources, so it is necessary to ban or phase out them in a planned and systematic manner.

Dear, I am glad to serve you the favorable conditions for the development of fisheries and marine ranches in our country: in addition to our country has many recreational fishery projects with foreign characteristics. In addition to excellent harbor and superior natural conditions, it also has a strong theoretical and technical foundation in fisheries science and related disciplines.

The construction of marine ranches should have suitable natural conditions, mainly referring to the natural characteristics of marine ranches in the sea area, mainly including spatial, physical, chemical and biological aspects, including marine functional zoning type, water depth, flow velocity, sediment type, water quality, primary productivity and fishery resource status. The construction of sea areas should have a good ecological environment, and the restoration of seagrass beds, artificial reefs and other ecological facilities should be reasonably carried out according to the information of water depth, flow velocity and sediment type.

There are many of them that live on the bottom, such as grass carp, if we all breed pelagic fish such as carp. In this way, we can moderately polyculture crucian carp, which is a demersal fish, and when the carp has uneaten or missed bait and sinks to the bottom of the pond, it provides abundant bait for the bottom fish. In this way, we can not only ensure that the carp have enough food, but also increase the income of the bottom fish with the same amount of bait.

Of course, the use rate of bait will increase, and it can also avoid the residual bait environment from polluting the water body and endangering the growth and development of fish.

In the case of feeding bait, we should pay attention to the specified timing and quantity, so that the fish can develop a better eating habit. When you feed the bait, you must not change the feeding address casually, otherwise it will cause some fish to not be able to eat at all. Then it is necessary to control the amount of feeding, and the amount of feeding should be adjusted within the effective range, to ensure that every fish can be full, and to avoid feeding too much.

Causing the quality of the residual bait will not only damage the water body, but also continue to have a serious impact on the growth and development of the fish if swallowed by mistake, so we must pay more attention.

One of the most common things that many fish farmers overlook is the amount of dissolved oxygen in the water, especially in the areas where the feed is fed. Nowadays, at least 70% of the dissolved oxygen is not enough, and if the dissolved oxygen is not enough, no matter how good the bait is, it will be in vain. If the amount of dissolved oxygen in the pond is less than 3 mg/L, the fish will stop eating.

It should be maintained at least above 5mg to allow the fish to eat normally. Therefore, we must ensure that the dissolved oxygen content of the water quality is above 5mg when breeding, and add aeration equipment in the breeding area to produce oxygen immediately.

When raising fish, we can use some of the leftover fish meat to feed, so that we can improve the utilization rate of bait, and can also be better farmed, which can increase production.

In the process of fish farming. Different bait should be released according to different fish species. In addition, it is necessary to feed on time and in the right amount, so that the bait will be used reasonably.

The product is abundant. The main feature of aquaculture fishery is that all aquaculture species live in water, and all kinds of water bodies are usually the breeding ground for microorganisms, parasites and other pathogens, and water is an excellent solvent and suspension agent for organic matter and dust. Under the influence of human factors, especially under unfavourable farming conditions, such as deterioration of water quality, malnutrition and emaciation, it is possible for pathogens to multiply.

At the same time, the resistance of aquatic animals to pathogens is reduced, leading to the occurrence and epidemic of diseases. Fishery environmental protection measures have intensified inspections during fishing ban periods and fishing ban areas, and resolutely cracked down on lawbreakers who have risen to the top. We should increase investment in fishery scientific research, introduce new excellent species of fish or algae, improve the living environment of fish, shrimp and shellfish, and intensify the work of breeding and restocking.

Intensify the control of marine environmental pollution, strictly review sea-related engineering projects, protect the marine ecological environment, and increase the publicity of social protection of the blue ocean.

As for the statement of the scope of application of the Fisheries Law, it is correct ( ) aThe internal waters and tidal flats of the People's Republic of China.

b.All other maritime areas under the jurisdiction of the People's Republic of China.

c.Territorial waters and exclusive economic zones of the People's Republic of China.

d.Fishing for aquatic animals in China's territorial waters.

e.Fishing for aquatic plants in China's exclusive economic zoneView answer analysis [correct answer] abcde

Answer Analysis] The Fisheries Law applies to fishery production activities such as breeding and fishing aquatic animals and aquatic plants in the internal waters, tidal flats, territorial seas, exclusive economic zones and all other sea areas under the jurisdiction of the People's Republic of China. （p223）

Knowledge points of this topic: legal provisions on land use and protection