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How to grow hydroponic plants

Hydroponic plant maintenance methods

Hydroponic plants are not only clean and hygienic, but also have few diseases and pests. They can also be matched with several kinds of flowers to achieve a similar effect to flower arrangement. Hydroponics mostly uses foliage plants, which have a wide range of adaptability under indoor conditions. Most foliage plants like semi-shade, tolerate semi-shade, and even grow under very poor light conditions. Foliage plants are not restricted by the blooming and falling of flowers, and can be appreciated in all seasons. Therefore, there is a saying that "foliage is better than flowers".

For plants that are converted from potted plants to hydroponics, first clean the roots of the plants and do not damage the root system. After placing them in the container, the water level should not be too high, otherwise it will affect the respiration of the plants. For plants that are hydroponically grown in the early stage, because the roots are not adapted to the water, a large amount of mucus will be produced, which will affect the water quality. Therefore, the water should be changed every day. When the changed water is no longer turbid, the water can be changed once a week or so, or water can be added directly. Plants need an adaptation period when they are just put into the water. During this period, symptoms such as root rot and yellow leaves will appear. These are all normal phenomena. Remove the rotten roots and change the water in time. When new roots grow, you can start normal maintenance. At this time, you can apply some nutrient solution. There are many kinds on the market, but don't make it too concentrated, otherwise it will damage the root system.

1. Water can be purified water or tap water. There should not be too much water in the pot. It is necessary to keep a certain amount of roots in the air. It is best if 70% of the root length is in the water. Pay attention to protecting the root system and try to straighten it so that most of the roots can be immersed in water.

2. If you raise fish together, you should pay attention to changing the water frequently and feeding the fish. If conditions permit, you can add oxygenation equipment and medicines to ensure the survival environment of the fish.

3. Generally, the water in the pot should be changed every one or two months. You can use tap water in your daily life. But please note that when the water temperature is lower than the indoor temperature, you should leave the tap water for a while before using it to keep the root temperature stable. For hydroponic flowers and plants without fish, the water should be changed every one or two months. The replaced water can also be used as fertilizer for soil-grown plants, which is rich in nutrients.

4. Plants should be coordinated with the size of the room. Larger plants are suitable for spacious rooms to avoid feeling empty. Smaller plants should be chosen for smaller rooms to avoid a sense of oppression.

5. Hydroponic plants can be placed directly on the ground. Large plants such as Pothos columns, Ruby Philodendron columns, Emerald Philodendron columns, Fiddle-leaf Philodendron columns, Bamboo palms, and Zebra Dieffenbachia can be placed on the ground; medium-sized plants such as Olanke, Spring Feathers, Hulk, Green Emperor, and Imperial Philodendron can be placed on the table, and small plants such as Begonia, Purple Velvet, Cactus, Duckweed, Chlorophytum, Syngonium, Cordyceps, and Paphiopedilum can be placed; for large cabinets, walls, and hanging decorations, choose plants with drooping branches and leaves such as ivy, Pothos, Mini Monstera, and Syngonium.

6. Flower containers for hydroponics: It is best to choose transparent containers, so that you can observe the roots and the water quality and water level clearly. The roots of various plants are different in color, including white, black, orange, etc. These roots are either intertwined or delicate and lovely, and they are an important part of appreciating hydroponics.

7. Hydroponic flowers should not be placed directly facing the air outlet of the air conditioner. The high wind speed will damage the branches and leaves, causing the leaves to curl at the very least and burn and wither at the worst.

What colors and abilities do jellyfish have?

Colors: light green, blue-purple, red, yellow, rainbow, white, pink, blue to dark purple, etc.

ability:

1. Predatory function. The oral arms have the function of predation. When feeding, tiny food can enter the moon jellyfish along the oral arm groove. The oral arms of rhizostomes are healed, and the mouth at the end of the lip is closed, forming many new tiny suction mouths for sucking. Generally, stinging cells are distributed on the outer surface of the tentacles, lip, oral arms and umbrella.

2. Symbiosis: The jellyfish and the small herder fish live together and benefit each other. The jellyfish "protects" the small herder fish, and the small herder fish swallows the small creatures living on the jellyfish.

3. Capture special information. There is a special gland in the umbrella of jellyfish that can emit carbon monoxide to expand the umbrella. There is a small ball on the thin handle in the middle of the jellyfish tentacle, which contains a small otolith, which is the "ear" of the jellyfish. The infrasound waves generated by the friction between the waves and the air impact the otolith, stimulating the surrounding nerve receptors, so that the jellyfish can get information more than ten hours before the storm comes, and all of them disappear from the sea surface at once.

Additional information:

The principle of jellyfish luminescence:

Jellyfish is a cellular animal with a simple structure. It has no muscles or bones, and 98% of its body is water. However, some jellyfish can glow. For example, when comb jellyfish swim in the sea, their bodies emit spherical blue light, and their long tentacles at the back shine with long and thin bands of light. As the comb jellyfish's body bends and swings as it swims, the light appears in various forms, which is very beautiful and moving.

It turns out that the light source of jellyfish is different from that of other animals. Most other animals emit light through the catalysis of luciferin and luciferase by oxygen, but jellyfish emit light through a magical protein called equiline, which can emit strong blue light when it encounters calcium ions.

According to scientists, each jellyfish contains about 50 micrograms of luminescent protein, which means that jellyfish rely on it to glow. For studying the luminescence principle of jellyfish, Shimomura Osamu and others won the 2008 Nobel Prize in Chemistry.

Reference source: Baidu Encyclopedia - Colorful jellyfish

Reference source: Baidu Encyclopedia - Jellyfish

Reference source: People's Daily Online - Deadly jellyfish in the ocean

There are pink and light yellow ones, and sometimes even five-colored ones!

Jellyfish do not change color, but they do glow.

Some jellyfish can emit light. For example, when comb jellyfish swim in the sea, their bodies show spherical blue light, and the long tentacles behind them shine with thin and long light bands. As the comb jellyfish bend and swing their bodies, the light is also in various forms, which is very beautiful and moving. It turns out that the light source of jellyfish is different from that of other animals. Most of other animals emit light through the catalytic action of luciferin and luciferase under the influence of oxygen. However, the light of jellyfish depends on a magical protein called aequorin, which can emit strong blue light when it encounters calcium ions. According to scientists, each jellyfish contains about 50 micrograms of luminescent protein, which means that jellyfish emit light through it.

There are pink, light yellow and even five-colored ones!

Jellyfish do not change color, but they do glow.

Some jellyfish can glow. For example, when comb jellyfish swim in the sea, their bodies emit spherical blue light, and the long tentacles behind them shine with thin and long light bands. As the comb jellyfish bend and swing their bodies, the light is also in various forms, which is very beautiful and moving. It turns out that the light source of jellyfish is different from that of other animals. Most other animals emit light through the catalysis of luciferin and luciferase by oxygen. However, the light of jellyfish depends on a magical protein called aequiline, which can emit strong blue light when it encounters calcium ions. According to scientists, each jellyfish contains about 50 micrograms of luminescent protein, which means that jellyfish glow with it.

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What are the abilities of jellyfish?

Can electrocute people and many animals

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What skills do jellyfish have that help them survive?

The main component of the jellyfish body is water, which is composed of two germ layers, the inner and outer germ layers. There is a thick mesoglea layer between the two layers, which has a floating effect. When they move, they use the water spray reflection in their bodies to move forward. There is a special gland in the umbrella of the jellyfish that can emit carbon monoxide to expand the umbrella. When the jellyfish encounters an enemy or a big storm, it will automatically release the gas and sink to the bottom of the sea. After the sea surface is calm, it only takes a few minutes for it to produce gas to expand and float. There are six sensory organs on the edge of the umbrella of the jellyfish. Once an object approaches them, they will quickly escape according to the infrasound in the sea water. There are many tiny tentacles on the edge of the jellyfish's wings. There are cnidocytes at the front end of the tentacles, which contain toxins. The cnidocytes can capture plankton and attack enemies.

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Which creatures in nature have unique abilities, such as bats have ultrasound and jellyfish have the ability to predict storms?

Biologists have made high-grade silk threads, tear-resistant parachutes and high-strength cables for temporary suspension bridges through the study of spider silk. Ships and submarines come from people's imitation of fish and dolphins. Sidewinder missiles and other modern weapons are developed by scientists imitating the "thermal eyes" function of snakes and the natural infrared sensing ability of a camera-like device arranged on their tongues. Rockets take off using the recoil principle of jellyfish and cuttlefish. Researchers have developed a lot of military camouflage equipment for the troops by studying the color-changing ability of chameleons. Scientists have studied frog eyes and invented electronic frog eyes. Termites not only use adhesives to build their mounds, but also can spray adhesives at the enemy through small tubes on their heads. So people made working weapons based on the same principle - a piece of dry glue shells. The US Air Force has developed a micro thermal sensor through the "thermal eyes" function of venomous snakes. my country's textile technology personnel use the principles of bionics and refer to the fur structure of terrestrial animals to design a KEG thermal insulation fabric with windproof and moisture-conducting functions. Based on the principle that the pits of rattlesnakes can sense temperature changes of 0.001℃, humans invented the tracking and pursuing Sidewinder missile. Humans also used the principle of frog leaping to design the Toad Raider. Humans imitated the highly sensitive sense of smell of police dogs to create "electronic police dogs" for detection. Scientists made the world's first gas masks based on the unique ability of wild boars' noses to detect poison. Bionics is a method that humans have always used, such as dolphin skin swimsuits that imitate dolphin skin. When scientists studied whale skin, they found that it had a groove structure. So a scientist used the structure of whale skin to create a thin film on the surface of the aircraft. According to experiments, it can save 3% of energy. If all the aircraft in the country are covered with such a surface, it can save billions every year. For example, a scientist studied spiders and found that spiders have no muscles on their legs. Animals with feet can walk mainly by muscle contraction. Now why can spiders walk without muscles? According to research, spiders do not walk by muscle contraction, but by the hydraulic structure inside. Based on this, people invented the hydraulic walker... In short, we get inspiration from nature and imitate its structure to invent and create. This is bionics. This is one aspect of our learning from nature. On the other hand, we can also get inspiration from the laws of nature and use its principles to design (including designing algorithms). This is the idea of ​​intelligent computing. Intelligent computing, also known as soft computing, is to borrow the inspiration of the laws of nature (biological world) and imitate the design of algorithms to solve problems according to its principles. For example: artificial neural network technology, genetic algorithm, evolutionary programming, simulated extinguishing technology and swarm intelligence technology. Swarm intelligence (Swarm Intelligence) The ability of social insects to forage, defend against enemies and build nests with collective strength. The intelligence displayed by this group is called swarm intelligence. For example, bees collect honey, build nests, ants forage, build nests, etc. Get inspiration from the cooperation of social insects in their work, study the principles, and use this principle to design new algorithms to solve problems. Ant algorithm When ants forage for food, they leave pheromones on the road they walk. These pheromones are like road signs, leaving a path mark for the ants that come later. The ants behind will walk along the path with pheromones (the more pheromones there are, the stronger their ability to attract ants is). Scientists have conducted experiments on this: they use artificial pheromones to draw a path on paper and test the ants. As a result, the ants really walk along the path with pheromones. BD Ant nest AC Food When ants forage for food, they start from the ant nest and can go along AC or ABC (see the figure above). Suppose that after finding food, each ant returns to the nest along the original path and leaves pheromones on the road. Since the AC path is short, when they return along AC, they leave pheromones twice on AC. Those returning along ABC only return to point D because of their long path, so the pheromone only stays on the AD section once (that is, the concentration of the pheromone there is weaker than that on AC). Therefore, the foragers coming out of the ant nest at this time will walk along the path AC with a high concentration... 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Which small animals have special abilities?

1. Venomous snakes are poisonous - they hunt prey. Venomous snakes are beautiful animals. Their saliva usually shoots out from their fangs to paralyze the enemy. People generally believe that venomous snakes are poisonous, but the venom of venomous snakes can only play a corresponding role in the blood, and drinking the venom will not cause harm to the human body (provided that there is no wound in the mouth). 2. Dogs wag their tails - to please people. Human smiles and dogs wagging their tails are similar forms of communication. Dogs use their tails to indicate their inner reflections, which is a kind of "language" for them. Generally, when they are excited or happy, they will shake their heads and tails. The tails will not only swing left and right, but also keep spinning; the tails are raised to express joy. 3. Electric rays can discharge electricity - to hunt prey and defend themselves. Electric rays can discharge electricity at will, and they can completely control the time and intensity of discharge. Electric rays can generate electricity and kill small fish, shrimps and other small animals in the water with the electricity they emit. It is a means of hunting and attacking enemies. 4. Geckos will abandon their tails - self-defense. The broken tail of geckos is a kind of "self-defense". When it is pulled by external force or encounters an enemy, the tail muscles will contract strongly, which can cause the tail to break off. This phenomenon is called "autotomy" in zoology. The newly broken tail keeps moving because the nerves are not dead, so it can use the clone technique to protect itself and escape. At the same time, there is a hormone in the gecko's body that can regenerate the tail. When the gecko's tail is broken, it will secrete this hormone to make the tail grow out, and when the tail grows back, it will stop secreting. 5. Bats can use ultrasound to locate and kill prey. Most bats also have a keen auditory orientation (or echolocation) system, which can emit ultrasound through the throat and then identify the direction and detect the target based on the ultrasound response. Some species have evolved special structures on their faces to increase sonar reception, such as nose leaves, wrinkles on the face, and complex large ears. Humans invented radar based on this feature.

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