CATDOLL : CATDOLL: Which plants have high economic value when grown in water?

1. Which plants have high economic value when grown in water?

Lotus root, water chestnut, banana melon, water chestnut, and water celery are only a few yuan per pound, but they have a higher yield. The yield of water chestnut is low, but the unit price after peeling is high. The fresh ones here are up to 100 yuan per pound. It depends on your choice. PS: Aquatic plants can be used to raise fish, shrimp, and crabs, so the overall output value is relatively high, and it saves fertilizer for aquatic plants.

2. Fish breeding techniques?

1.

Stocking time selection: Fish should be released on sunny days when the temperature is not too low. Generally, the temperature should be between 2℃ and 5℃. At this stage, the fish scales are tight and the activity is small. It is not easy to injure the fish during fishing, transportation and stocking operations, which can reduce the morbidity and mortality of fish. It is easy to frostbite the fish on rainy days with low temperature or snowy, frozen and windy weather; when the temperature is too high, the fish scales are loose and the activity is large, which is easy to injure the fish during operation.

2.

Stocking of fish: Before stocking the fish, check whether the drugs have lost their effectiveness after pond cleaning. In early spring, the water temperature is low and the toxicity disappears slowly. Water should be taken in advance and test fish should be released. According to the stocking plan, individual size, density, and matching species and specifications, the fish that can be released at one time should not be released in batches, so that the fish can adapt to the environment, start eating early, and promote growth. At the same time, [Gold Iodine] should be used for drug disinfection when stocking fish.

3.

Feeding at the right time When the water temperature rises to 810℃, fish begin to eat, and the amount of food intake gradually increases with the increase of water temperature, so they should be fed in time. Feed once a day or every other day, and choose to feed at noon on a sunny day; as the water temperature continues to rise, the number of feedings can be increased to twice, that is, feeding once in the morning and once in the afternoon. Feeding should adhere to the principle of four determinations (timing, quality, positioning, and quantity), and the specific daily feeding amount should be flexibly controlled according to the weather, water temperature, and the feeding situation of fish. For grass carp weighing more than 1 jin, it is recommended to feed Da Beinong high-grade expanded feed 8103 in the early stage of feeding; for small grass carp mode, it is recommended to feed Da Beinong microecological juvenile fish special feed [Intestinal Liver Health], and the feeding rate is controlled at about 0.5%1%. This product is rich in nutrients and probiotics, which can quickly repair the fish intestines, restore the physique, and improve immunity.

Four,

Add organic fertilizer to improve the fertility of the water body. Sanyingshuiwang organic biological fertilizer has a long-lasting fertilizer effect. Yizaoyuan promotes algae growth and quickly fertilizes the water. After the fish pond is cleaned, frozen, and disinfected in winter, the fertility of the water body is low. As the saying goes, raising fish starts with raising water, so fertilizing the pond water is particularly important. In spring, it is best to apply organic fertilizer. It is recommended to use biological fertilizers rich in various trace elements [Sanyingshuiwang] or Yizaoyuan, which are rich in trace elements. The specific amount of fertilizer and frequency should be determined according to the quality of pond water and fertilizer.

The general principle is: early spring, large amount and few times, late spring, small amount and many times. Make the pool water green (including blue-green, yellow-green and bean green) or brown (including yellow-brown, reddish brown and tea-brown), the water transparency is moderate, maintained at about 30 cm, the water temperature is low in early spring, it should be controlled at 20-30 cm, the temperature is high in late spring, it should be controlled at 25-35 cm, the water quality should be kept rich, active, tender and refreshing.

3. What is the economic value of hornet breeding?

Biological control value

Wasps are omnivorous insects that are mainly carnivorous and can effectively prey on and kill a variety of insects, such as cotton bollworms, cabbage butterflies and other insects that are more harmful to the agricultural and forestry industries. In addition, during visits to some artificial breeding of wasps, it was found that when the density of breeding groups in the area is too high, it becomes more difficult for wasps to forage for wild insects. Breeders can appropriately supplement the feed with grasshoppers, beef, lean pork and offal.

Therefore, using wasps to prey on insects can not only curb the spread of agricultural and forestry pests, but also reduce the pollution of chemical pesticides to the ecological environment, thus having good economic and ecological benefits. Guo Yunjiao and others raised wasps on mobile equipment and conducted experiments on wasps killing agricultural pests in vegetable and fruit bases, achieving significant results.

Nutritional Value

Wasp larvae and pupae are delicious food for human consumption. In Yunnan, wasp pupae are one of the most common insect ingredients (mostly fried when eaten). The best time to harvest wasp pupae is around the Mid-Autumn Festival. Wasp larvae and pupae with nests can be seen for sale in rural vegetable markets. Due to their strong seasonality, they are often sold out and in short supply.

Medicinal value

Wasps have been used for medicinal purposes for a long time. For example, "Compendium of Materia Medica" and "Dai Medicine" record that wasp larvae, adults and honeycombs can all be used as medicine. In my country, honeycombs and bee venom are traditional medicines, and have achieved good results in clinical applications of bee sting allergies, rheumatoid arthritis, etc. In Yunnan, most people believe that wasps have the effects of food therapy, health care and treatment, and use live wasps to soak in wine for drinking. For example, the Jingpo people often use fresh wasps to make wasp wine, which has the effect of dispelling wind and dampness, and is often used to treat rheumatic diseases. Guo Yunjiao and others used golden hornets to prepare 32 kinds of wasp wines, which also proved that wasp wine has the effect of preventing and treating rheumatic diseases.

4. Fish farming technology?

1.

Stocking time selection: Fish should be released on sunny days when the temperature is not too low. Generally, the temperature should be between 2℃ and 5℃. At this stage, the fish scales are tight and the activity is small. It is not easy to injure the fish during fishing, transportation and stocking operations, which can reduce the morbidity and mortality of fish. It is easy to frostbite the fish on rainy days with low temperature or snowy, frozen and windy weather; when the temperature is too high, the fish scales are loose and the activity is large, which is easy to injure the fish during operation.

2.

Stocking of fish: Before stocking the fish, check whether the drugs have lost their effectiveness after pond cleaning. In early spring, the water temperature is low and the toxicity disappears slowly. Water should be taken in advance and test fish should be released. According to the stocking plan, individual size, density, and matching species and specifications, the fish that can be released at one time should not be released in batches, so that the fish can adapt to the environment, start eating early, and promote growth. At the same time, [Gold Iodine] should be used for drug disinfection when stocking fish.

3.

Feeding at the right time When the water temperature rises to 810℃, fish begin to eat, and the amount of food intake gradually increases with the increase of water temperature, so they should be fed in time. Feed once a day or every other day, and choose to feed at noon on a sunny day; as the water temperature continues to rise, the number of feedings can be increased to twice, that is, feeding once in the morning and once in the afternoon. Feeding should adhere to the principle of four determinations (timing, quality, positioning, and quantity), and the specific daily feeding amount should be flexibly controlled according to the weather, water temperature, and the feeding situation of fish. For grass carp weighing more than 1 jin, it is recommended to feed Da Beinong high-grade expanded feed 8103 in the early stage of feeding; for small grass carp mode, it is recommended to feed Da Beinong microecological juvenile fish special feed [Intestinal Liver Health], and the feeding rate is controlled at about 0.5%1%. This product is rich in nutrients and probiotics, which can quickly repair the fish intestines, restore the physique, and improve immunity.

5. What are the quality requirements for farmed fish?

1. Fish species

1. Different species of fish have different protein and fat content in their muscles, different meat structures, and large differences in price.

2. Different species of fish have different contents of amino acids that make up the protein in the fish meat, such as lysine, arginine, glutamic acid, aspartic acid, alanine, etc., and the taste is also different.

3. The types and proportions of fatty acids in fish fat, especially the proportion of docosahexaenoic acid (DHA), also vary, resulting in different tastes of fish.

4. DHA is a natural melatonin and an essential nutrient for the human body. Fish with high DHA content include tuna, bonito, salmon, mackerel, etc.

5. The content of the above-mentioned amino acids and DHA in the muscles of marine fish is higher than that of freshwater fish, so marine fish tastes better than freshwater fish.

6. In aquaculture, the selection of breeding species must meet the following conditions: choose suitable breeding species based on the local breeding environment and climatic conditions; examine whether they have market development prospects; the selected breeding species must not have any difficulties in terms of seedlings, feed, etc.; be able to master the feeding and management techniques of the breeding species, and invite breeding experts for regular guidance, etc.

2. Aquaculture water environment

1. Aquaculture requires sufficient water resources, fresh water quality and no pollution.

2. First, establish a farm in a place with sufficient water resources, up-to-standard water quality, convenient irrigation and drainage, and convenient transportation. Secondly, cultivate good water quality. During the breeding process, pay close attention to changes in water temperature, transparency, dissolved oxygen, pH value, etc. to ensure that the water quality always remains "rich, active, tender, and refreshing."

3. Feeding

1. Feed is the material basis for farmed fish to survive. The balance between protein, fat, carbohydrates and vitamins in the feed is crucial. Fish eating high-quality and fresh feed can improve their physiological state and immunity, and increase their survival rate. Fish farmed in this way have good color, normal body shape, strong vitality, firm fish meat and good taste.

2. Feed feeding: select palatable, high-quality, fresh feed according to the physiological characteristics of fish, and strictly follow the "four determinations" principle for scientific feeding; adjust the feeding amount in time according to weather conditions and fish feeding conditions; make full use of the breeding space of the water body, adopt a mixed breeding method of multiple varieties, rationally utilize the natural bait and artificial feed in the water body, improve the breeding water environment, and improve the breeding efficiency.

4. Use of fishery drugs

1. In the process of aquaculture, when cleaning ponds and disinfecting, seedlings and feeding tools, and adjusting water quality, the selection of fishery drugs should be scientific and reasonable, and special attention should be paid to the usage and dosage to prevent the quality of farmed fish from being affected by improper use of drugs.

2. The use of fishery drugs should be based on different aquaculture species and different pathogenic factors. Appropriate national standard fishery drugs should be selected, and treatment should be carried out according to the prescribed dosage, usage method, and course of treatment, and the regulations on drug withdrawal periods should be strictly implemented.

3. In breeding, we should start from the nutritional needs of animal growth, feed hygiene, breeding management and other aspects to reduce the occurrence of diseases and ensure human food safety.

6. What is the largest farmed fish?

grass carp

The fish with the highest annual output in my country is grass carp (one of China's four traditional freshwater farmed fish). The development of the six major freshwater farmed fish species is converging, with grass carp firmly in the first place and bighead carp surpassing carp to enter the top three.

7. What are the small animals with high economic value that can be artificially bred?

If you have a piece of mountain land or wilderness, as long as there is water and electricity, it is recommended that you raise pheasants.

Reason 1: There are two types of chickens on the market today: 40-day fast-growing chickens and three-month meat chickens. Both types are grown by feeding on compound feed. There are very few chickens on the market that are over three months old.

Reason 2: Many city dwellers want to eat good chicken, but they can’t afford it. Especially in first-tier cities, there are currently 19 of them in the country, with a population of about 300 million, and the market potential is huge.

Reason 3: Purely free-range mountain pheasants are similar to pheasants. They eat sand, pebbles, grass seeds, small insects, etc. They only need to be supplemented with corn and pepper seeds, and the cost is controllable.

8. How many species of fish are farmed?

Grass carp, black carp, silver carp, bighead carp, carp, crucian carp, bream, and bighead carp are farmed fish. These eight fish are all carp fish, warm-water fish, with large spawning capacity and strong reproductive capacity. They can spawn naturally, have sufficient seedling sources, strong disease resistance, a long history of artificial breeding, and mature artificial breeding technology. The breeding method is flexible, and can be intensive or extensive, and can be fed with artificial bait or commercial fish feed.

9. Marine fish farming cycle?

The breeding cycle of different species is different. The breeding cycle of blue grouper and oily grouper is about 1 year, while the breeding cycle of eastern grouper and humphead grouper is as long as 2-3 years. Cost analysis: The cost of breeding grouper includes seedlings, feed labor costs, water and electricity costs, management fees, epidemic prevention costs, etc. The breeding cost of one acre of grouper is about 400,000 yuan, and the profit is more than one million yuan, which is very considerable.

10. What is the definition of artificial fish farming?

Fishery farming is also known as aquaculture, which is the artificial breeding of various fish species and seafood to meet market demand. It can be roughly divided into three categories: freshwater farming, saltwater farming and marine farming. Freshwater farming is carried out in inland ponds, lakes and other waters.

Freshwater aquaculture includes fish farming in rice fields, reservoirs, ponds, etc., mainly breeding fish and shrimps, with a high production level, large output and high returns.

Saltwater aquaculture is suitable for breeding some seafood that have special requirements for water quality, such as tilapia, pike, white shrimp, American red fish, carp, etc.

Marine aquaculture utilizes coastal beaches and bays to cultivate fish, shrimp, shellfish, algae, sea cucumbers, etc. It has high yields, short growth cycles, and high economic benefits.