How to raise the small thorn plum blossom, the breeding methods and precautions / sufficient sunshine of the plum blossom

Chimonanthus przewalskii is a plant native to Africa, and then introduced to China. Now it is also a common plant in China, and there are many people who cultivate it. So how to raise the small thorn plum blossom? With regard to the breeding methods and matters needing attention of prickly plum blossoms, the following editor will take you to know about it.

1. How to raise plum blossoms with small thorns / plenty of sunshine

On the question of how to raise small prickly plum blossoms, it is difficult to summarize, because there are many aspects that need to be paid attention to in the process of breeding, such as lighting, watering and so on. In the following, there is a detailed explanation of the breeding methods and matters needing attention of prickly plum blossoms, which can be seen by interested friends.

II. Culture methods and matters needing attention of prickly plum blossoms

1. Soil selection

In the cultivation of plum blossoms, the choice of soil is the first step, but also a point that needs to be paid attention to. In the choice of soil, it is best to choose sandy soil, this kind of soil drainage will be better, so that plum flowers can better absorb nutrients.

two。 Fertilization requirements

Although fertilizer is one of the main nutrients of plum blossoms, it is still in line with the principle of preferring less rather than more. Generally, we can choose to apply fertilizer once a month or so, and remember to apply fertilizer after dilution before fertilization, otherwise it will not be absorbed.

3. Watering requirement

The plum blossom is a kind of drought-tolerant plant, so we should keep the principle of dry watering when watering it, and never water it too frequently, otherwise it is easy to cause root rot, so we must pay attention to this point.

4. Lighting requirement

In the process of plant culture, light is indispensable, the plum blossom is no exception, it is best to raise it in direct sunlight, so that it can better carry out photosynthesis, so as to produce delicate and beautiful flowers.

5. Pay attention to changing the basin

After cultivating the plum blossom for about 2 years, it is necessary to change the pot, and the best season for the pot change is generally in spring, and some dead branches and rotten leaves of the plum blossom can also be trimmed.

How to raise puffer fish?

Because many diners have begun to eat puffer fish in recent years, and Japan is a big country that eats puffer fish, farmers in coastal areas take advantage of regional advantages to raise puffer fish, mainly for export to Japan. About how to raise puffer fish, editor to make a simple and comprehensive introduction!

How to raise puffer fish?

Cage culture of puffer fish has the advantages of mobility, flexibility, simplicity, wide adaptability to water area, simple operation and so on.

Aquaculture area

Choose the water area with shelter from the wind to the sun, quiet environment, fresh water quality, no pollutants, no obstacles, wide water surface and good sunshine conditions as cage culture waters. Cages should not be installed in the waterway, in front of the dam, at the gate, in the main river and in waters where the water flow rate exceeds 0.1 meters per second. The bottom of the cage should be more than 0.5 meters high from the bottom of the water to prevent the cage from running aground. The waters with cages are generally 3-6 meters deep all the year round, and the dissolved oxygen is more than 4 milligrams per liter.

Cage setting

When the puffer fish is about 3 cm long, the cage mesh is 6 mesh per square centimeter; when the puffer fish is more than 8 cm long, the mesh diameter is 1.5 cm. The size of the cage is 5 meters × 8 meters × 2.5 meters, and the upper mouth is 30 centimeters above the water surface. In a relatively open water surface, the arrangement of cages should be zigzag, plum blossom or herringbone, with a distance of 15-30 meters; if restricted by water conditions, when cages must be arranged in a zigzag pattern, every two cages should be grouped into a group with an interval of more than 50 meters. The feeding cage area generally accounts for about 4% of the set water surface.

Fish stocking

Water should be tested in cages 10-15 days before fish stocking. It requires complete body surface, disease-free and injury-free, strong physique and neat specifications. Before putting the puffer fish into the cage, put the oxygen bag containing the fry into the box for 15 minutes, and let the fish out when the water temperature in the bag is roughly the same as that in the box. About 12 cages per square meter. In order to prevent a large number of moss from growing in the cage, the cage should also be matched with fish that feed on a small amount of plants.

Bait feeding

Bait should be fixed at a fixed time, fixed point, qualitative and quantitative. Put an appropriate amount of water plants such as water peanuts in the cage, and the water plants cover about 20% of the water surface. A week before puffer fish is released, soy milk and dregs are sprinkled in the cage to cultivate the early bait of puffer fish. After entering the box, the puffer fish is fed with a mixture of crushed fish paste and wheat flour at 3:1, which is 10% of the fish's body weight. The bait was put on the table and fed twice at 9: 00 a.m. and 4: 00 p.m.

Daily management

The daily management mainly includes the first diligence, the second catch and the third defense.

Check as soon as you work hard. Check whether the net coat is damaged before launching the cage, check whether the box is box-shaped after launching, and flush the cage in time. Check whether the cage is in good condition in the morning, noon and evening every day. Observe the situation of fish and water frequently.

Second grasp: first grasp timely washing the box. Cleaning cages usually rinse the attachments on the mesh with a washing machine. It is required to operate carefully to avoid damage to the fish. Don't wash the cage too often. Second, grasp and move the box at the right time. The box should be moved timely according to the condition of the water area and the change of water quality. When the position of the cage drops or on the eve of the flood season, the cage must be moved to safe waters with suitable water level in time.

Three defenses: one against fish disease. The fresh seeds were soaked in salt water of 3% Mel 5% concentration for 10 minutes before stocking; the disease-free bait was selected, and the bait was soaked in 3% Mel 5% salt water for about 15 minutes before feeding or storage; and raw lime water was sprinkled once a month. Check the fish regularly, because they like to swim in the box, it is easy to scratch the body. Generally, every 10 days, all the fish are picked up and washed in salt water with a concentration of 2% Murray and 3% for 15 minutes to prevent the epiphytic growth of parasites and bacteria, and are regularly mixed with furazolidone and sulfonamides. Second, guard against strong winds and floods. Keep abreast of the weather and move the cage before the strong wind and flood come. Three prevention cages are lost. Special personnel should be sent to guard the cage day and night in case it is lost. At the same time, it is also necessary to prevent rats, otters and waterbirds from harming puffer fish.

Go out of the net to get fish

When the fish species reach the specifications of separate boxes and change boxes or the standard of developing commercial fish, they should be out of the box in time. The way to get fish out of the box is to row the two working boats to both sides of the cage, first lift the bottom net at the two corners of the cage, then use the bamboo pole to cut off the bottom of the net, slowly drive the fish to one end of the cage, and then put the bamboo pole on the floating rack. The corner of the floating frame is placed on the bow, tied with a rope, untied the cage mouth, and then put the fish into the box to fish out. Put the fish species that meet the conditions of separate culture into the fish species cage or adult fish cage, and the small fish species left behind are still put back in the original cage. If there are not many small fish left, the small fish in several cages can be merged into one cage for breeding.

Morphological characteristics of puffer fish

Puffer fish, commonly known as "puffer fish", is a general term for fishes of the family Tetranychidae. The body of the river is cylindrical, with air bags, and it will inhale and expand when it is in danger. Its body length is generally 25ml / 35cm. The mandible and tooth healing composed of 4 large dental plates, 1 dorsal fin, no ventral fin. Without scales or with small spines. All oval, obtusely round in front and tapering in tail. The kiss is short, round and obtuse; the mouth is small, end position, transverse crack. The upper and lower jaws each have 2 plate incisors, and the median suture is obvious. The lips are well developed and the ends of the lower lip are bent upward on the outside of the upper lip. The eye is small, the Gill hole is small, it is an arc-shaped crack, located in front of the pectoral fin, and the body surface is densely covered with small spines.

The position of the dorsal fin is very back, opposite to the anal fin; there is no ventral fin; the posterior end of the caudal fin is truncated. The back of the body is grayish brown, the side of the body is slightly yellowish brown, and the ventral surface is white; the markings on the back and side of the body vary with different species. There are many species, most of which live in the sea, but they can also be found in fresh water and the confluence of sea and fresh water. They blow water and air in the water, make the sediment fly, and then prey on creatures hiding in the sand. Teeth and jaws are hard and can crush very hard shells.

Distribution of puffer fish

Fugu is very rich in resources in China. 54 species are produced along the coast of China, with an annual output of about 300 ~ 4 million tons, which can be caught almost all the year round. In the Yangtze River and Pearl River, the flood season occurs between spring and summer, which is one of the main fishery objects in the coastal areas and the middle and lower reaches of the rivers. In China, there are more than 30 species of puffer living along the coast from Liaoning to Guangdong, among which the dark oriental fugu enters the middle and lower reaches of the Yangtze River and Pearl River.

The living habits of puffer fish

Puffer fish are bigger than dolphins. They can grow up to 3 meters long. Unlike dolphins, their heads can be rotated 90 degrees, giving them an advantage in complex rivers. Sometimes, like dolphins, they chase schools of fish together to improve predation efficiency. Their jaws have sensitive hair, which is said to be the tactile organ that preys on crustaceans in the mud. They have broad pectoral fins, making them more flexible in narrow channels, and with their caudal fins, they can reach 23km/h in a short time.

Generally speaking, the toxicity of farmed puffer fish is still weaker than that of wild ones, so if domestic diners want to eat puffer fish, they had better choose farmed puffer fish, and compared with farmed puffer fish, the price is cheaper and easier to deal with, so it is safer to eat.