Brief introduction of self-made methods of Environmental Protection Flower insecticides

How to make self-made green flower insecticides? We often see many beautiful flowers in our life, such as lavender, blue witch, green pineapple, cactus, a touch of incense, dolphin flowers and so on, which are loved by the majority of flower friends because of their own characteristics, and more and more people join in flower farming. Of course, it is not so easy to grow flowers with beautiful flowers, and it is necessary to master the corresponding breeding techniques and nursing points, and today the editor is going to talk about the self-made methods of environmentally friendly flower pesticides. I hope it will be helpful to everyone's flower culture.

I. advantages of environmentally friendly flower insecticides

Environmental protection flower insecticides will not have any drug harm, and do not hinder the healthy growth of flowers, but promote the healthy growth of flowers.

II. Self-made methods of Environmental Protection Flower insecticides

(1) washing powder solution

Production method: first stir with 2g washing powder solution + 500g water, then add a drop of essential oil to stir, and spray the liquid with filtrate spray tool.

Control effect: it can effectively control aphids, red spiders, scale insects, green thorn moth, pink butterfly, whitefly and other insect pests.

(2) garlic liquid

Production method: mash 30g garlic and add 500g water, filter the garlic residue, spray the liquid with filtrate spray tool, spray it 3-4 times a day, or use a brush to dip some acid on the injured area of flowers. Mashing garlic and inserting it into the pot soil can kill ants, earthworms and nematodes.

Control effect: effectively control rose powdery mildew and black spot.

(3) Chinese prickly ash liquid

50g Zanthoxylum bungeanum + 500g water boiled into 250g liquid, diluted with 6-7 times water and sprayed.

Pest control function: kill aphids, whitefly and scale insects.

The above is about the main points of self-made methods of environmental protection flower insecticides, if you want to learn more about breeding and planting, you can follow Huinong Network, or download mobile phone Huinong APP to learn.

Brief introduction of indoor flowers in 2015 issue 018 what I share with you today is the knowledge of indoor flowers [indoor flowers] one, purifying the air aloe, hanging orchid, tiger tail orchid, one-leaf orchid, tortoise back bamboo are natural scavengers, can remove harmful substances in the air. Studies have shown that tiger tail orchid and hanging orchid can absorb more than 80% of indoor harmful gases, and have a strong ability to absorb formaldehyde. Aloe is also good at absorbing formaldehyde, absorbing 90% of formaldehyde in 1 cubic meter of air. Ivy, iron tree, chrysanthemum, kumquat, pomegranate, half lotus, rose, camellia, pomegranate, Milan, daisy, preserved plum, marigold, etc., can effectively remove harmful substances such as sulfur dioxide, chlorine, ether, ethylene, carbon monoxide and nitrogen peroxide. Orchids, sweet-scented osmanthus, wax plum, taro, red back cinnamon and so on are natural dust collectors whose cilia can intercept and absorb floating particles and smoke in the air. Second, with the warmer weather, mosquito repellent plants have become the focus of attention. Mosquito clean vanilla is such a plant. It is an aromatic geranium plant that has changed its genetic structure and was soon introduced from Australia. The plant is drought-tolerant, can grow and mature within half a year, can survive for 10-15 years if properly maintained, and the shape of its branches and leaves can be changed at will, so it has high ornamental value. Mosquito net vanilla exudes a fresh and elegant lemon fragrance, which has a good mosquito repellent effect indoors, but has no toxic side effects on the human body. The higher the temperature, the more incense it emits, and the better the mosquito repellent effect. According to the test, a pot of mosquito net vanilla with a crown width of more than 30 centimeters can drive away mosquitoes in a room with an area of more than 10 square meters. In addition, a plant called pyrethrum contains pyrethroid, which can also effectively ward off mosquitoes. Third, germicidal roses, sweet-scented osmanthus, violets, jasmine, lemon, rose, carnation, lily of the valley, crape myrtle and other aromatic flowers produce volatile oil has a significant bactericidal effect. Crape myrtle, jasmine, lemon and other plants can kill protobacteria such as diphtheria and dysentery in 5 minutes. The fragrance of rose, carnation, lily of the valley, violet, rose and sweet-scented osmanthus has obvious inhibitory effect on the growth and reproduction of Mycobacterium tuberculosis, pneumococci and staphylococci. Cactus and other succulent plants native to tropical arid areas, the stomata on their succulent stems are closed during the day and open at night, absorbing carbon dioxide and producing oxygen, increasing the concentration of negative ions in indoor air. Tiger skin orchid, tiger tail orchid, tequila and brown palm, Jialan, Sedum, rooting, cultivated pineapple and other plants can also purify the air at night. Plant climbing plants such as Parthenocissus, grapes, morning glory, wisteria and roses around the home and let them climb along the wall or along the shelf to form a green Arbor, which can effectively reduce sunlight radiation and greatly reduce indoor temperature. Cloves, jasmine, roses, violets, peppermint and other plants can make people relaxed, happy, conducive to sleep, but also improve work efficiency. Indoor flower decoration means that indoor furnishings borrow scenery from nature, introduce garden sentiment into the interior, and reproduce the natural scenery indoors, which is a way of decoration with vitality. It is not only a simple environmental beautification, but also can purify the air, benefit physical and mental health, cultivate interest, but also a kind of cultural and artistic content. Potted flowers are the basic materials for flower decoration in large places, which have the advantages of convenient arrangement and replacement, various forms, long viewing period, flowering and strong adaptability in the four seasons. In the past, it was mainly used for the beautification of family rooms and organs and units, but today it is widely used in hotels, restaurants, office buildings, entertainment centers, resorts and other places, in order to gradually form the form of potted flower rent. ?? Choose roses: the fragrance has a strong effect and can lift people's spirits. Crape myrtle: fragrance can be sterilized, so that there is no hiding place for Shigella, diphtheria and tuberculosis in the room. Lemon: the fragrance of flowers can lift one's spirits and make people's listless state of mind disappear. Cymbidium: its leaves can absorb carbon monoxide, carbon dioxide and other harmful gases, and then concentrated to transport to the root, decomposed into nutrients to absorb. Lavender: the smell has a certain effect on the prevention and treatment of asthma. Cactus: inhale carbon dioxide at night to produce oxygen. Putting it indoors can increase the concentration of fresh air and negative ions, which is beneficial to physical and mental health. Tianzhulan: the smell has a calming effect, can eliminate fatigue and promote sleep. Begonia and asparagus: in addition to absorbing harmful gases such as sulfur dioxide, carbon dioxide and chlorine at night, they can also secrete gases that kill bacteria, reducing the occurrence of colds, colds, laryngitis and other infectious diseases. Rose and jasmine: release essential oils and anions day and night to freshen the air in the room and treat mental depression, neurasthenia and other physical and mental diseases. ?? ps. It is best not to put flowers in the bedroom ~ it may affect your sleep. Flowers that should not be placed indoors. The aroma of orchids can be excessively exciting and cause insomnia. Second, if the pollen emitted by the bauhinia flower comes into contact with people for too long, it will induce asthma or aggravate the symptoms of cough. Third, mimosine in mimosa is a highly toxic organic substance, which will cause hair loss after too much contact with the human body. Fourth, the strong fragrance emitted by rose flowers will cause chest discomfort, suffocation and difficulty breathing in some people. Fifth, the fragrance of lilies can also excite people's central nervous system and cause insomnia. 6. Nocturnal incense will emit a large number of olfactory-stimulating particles at night, and smelling it for too long will make patients with high blood pressure and heart disease feel dizzy, depressed and uncomfortable, and even get worse. Seventh, oleander can secrete a milky liquid, contact for a long time, will cause poisoning, causing drowsiness, mental decline and other symptoms. Eighth, the fragrant smell of pine and cypress flowers and trees has a stimulating effect on the intestines and stomach of the human body, which not only affects appetite, but also makes pregnant women feel upset, nausea, vomiting and dizziness. 9. Particles emitted by hydrangea flowers, such as contact with people, will make people's skin allergic and cause pruritus. The flowers of tulips contain a poisonous alkali, which can accelerate hair loss if they come into contact with them for a long time. Eleven, the yellow rhododendron flower contains a toxin, once eaten by mistake, light will cause poisoning, serious will cause shock, serious harm to health. The full text is transferred from Baidu encyclopedia and click on the upper right corner of the screen to follow this official account to view the previous content. The official account can also view the previous content number 001 white hair, poor hair quality, kidney deficiency (black rice, black beans, black sesame, walnut, wolfberry squeezed soybean milk) 002 constipation (tortoise Ling ointment) 003 carsickness ointment) 004 insomnia (Shenmen acupoint, Neiguan acupoint) 005 oral ulcer, fire halitosis (brushing tongue coating) 006 warm stomach, fat lowering, greasy (Pu'er tea) 007 hand gas, hand tinea, hand peeling, hand peeling. Crack (clove wine) 008 diarrhea (pomegranate skin boiled water) 009 cold (ginger juice brown sugar water) 010 hypertension (Hawthorn water) 011 hypertension, high cholesterol, chronic gastritis (peanut) 012 skillfully use activated carbon 013-015 food phase (1) to (3) 016 honey beauty 017 mung bean massage to treat insomnia you can also leave a message for the editor. Tell the editor the direction of health care you want to know, and I will find a suitable recipe for you. It takes a minute to learn one more trick. As it takes a certain amount of time to check the data to verify the authenticity of the secret recipe, the editor sends it once every 1-2 days as much as possible. When sharing, please indicate the origin ~! Zan ~ ↓↓↓ hydroponic Flower Technology knowledge and planting methods of hydroponic Flower

Now many florists like hydroponic flowers, which are clean, beautiful and simple. However, hydroponic flowers also have certain technology. I have sorted out the relevant knowledge of hydroponic flowers here. I have come to share with you. If there is something wrong, you are welcome to leave a message and communicate more.

Brief introduction of hydroponic Flower Technology

Hydroponic culture of flowers is a common kind of soilless cultivation, there are many methods, several commonly used are briefly described as follows.

The deep liquid flow technique is characterized by the fact that the root system of the plant is wholly or partially immersed in the nutrient solution; the nutrient solution is mobile; the nutrient solution is mixed with air to dissolve oxygen.

Nutrient film (NFT) technology is developed on the basis of plastic bag technology. The plant can be cultivated by putting an appropriate amount of nutrient solution into the plastic bag, and on this basis, the plant can be further improved: the plastic bag is changed into a plastic film and laid on a grid of a certain shape; the nutrient solution is a thin layer 0.3 to 1.0 cm thick; part of the root system of the plant is immersed in the nutrient solution and part of it is exposed to moisture; the nutrient solution flows; the plastic film wraps the plant in white and black, forming a dark space inside.

The advantages are as follows: the oxygen demand of root respiration is well solved; the structure is simple and portable, the cost is low; the plant grows fast, is easy to manage, and is suitable for large-scale production.

In the technology of aerosol culture, the nutrient solution is sprayed around the plant roots after atomization, the fog condenses on the surface of the roots, and water is absorbed by the roots. The root is continuous or discontinuous in the environment of nutrient droplet saturation, which well solves the problem of water, nutrient and oxygen supply, and the plant production is fast. Fog culture can also be used in cutting seedlings.

The water solution of glass bottle can be coated with black plastic film around the bottle, or covered with black paint, or pasted with a layer of black paper, so that the bottle is opaque. Shading is beneficial to root growth and avoid algae growth. In summer, a layer of white paper should be placed on the outside of the black bottle to cool down. Tear off the white paper in winter, use foam board to do bottle cap, open a hole in the middle, clip the plant, cover the bottle cap, the top of the cap should also be black. Fill the bottle with nutrient solution, not too full, and leave pores for plants to breathe oxygen. If the water is inserted to promote the root, it is not necessary to use the nutrient solution, as long as the water can be injected, and then change the nutrient solution after the root grows. Specific operation process:

The seedlings can change the nutrient solution once a week according to the situation. Adult flowers are changed once a week in the summer peak growing season and once in 1 to 2 weeks in the non-growing season.

Take a breath and open the bottle cap for a while every morning and evening, leaving the roots completely exposed to the air. After a period of adaptation, there can be no ventilation for more than one month.

Rehydration flowers grow vigorously in summer and consume a lot of water, so you should always replenish water in the bottle to prevent the nutrient solution from drying up.

The preparation of hydroponic nutrient solution can be made with fertilizer tablets sold on the market or chemical fertilizers. If there are conditions, you can prepare it by yourself, and the formula is as follows:

Formula 1: (PH value 6mur6.5)

Potassium dihydrogen phosphate 0.44g / L; potassium sulfate 0.14g / L; calcium nitrate 0.59g / L; ammonium nitrate 0.19g / L; magnesium sulfate 0.53g / L; trace elements 2ml; Fe-EDTA2 ml.

Formula 2: (PH value 6Mui 65)

Calcium nitrate 1.64g / L; magnesium sulfate 0.98g / L; potassium nitrate 1.01g / L; trace elements 2ml; potassium dihydrogen phosphate 0.27g / L; Fe-EDTA2 ml.

Preparation method of trace element solution:

Boric acid 2.86g, zinc oxide 0.11g, manganese chloride 181g, copper dichloride 0.05g, sodium molybdate 0.025 g. The above drugs are dissolved in 800ml of water and then dissolved to 1000 ml.

How to survive the winter of hydroponic flowers

In general, flowers dormant when they are below 5-8 degrees Celsius, and tissue necrosis occurs when they are below 0 degrees Celsius. Therefore, if the indoor temperature is above 5 degrees Celsius, hydroponic flowers can generally survive the winter safely; in winter in the south, the indoor temperature is generally not lower than 5 degrees Celsius, if the extremely low temperature weather occurs for a few days, it can be solved by lighting a 60-watt incandescent lamp above the flowers to solve the problem; while in the north, because there is mostly indoor heating, it can also meet the safety of hydroponic flowers to survive the winter.

Why do hydroponic flowers change water?

Because plants absorb water and inorganic salts from the nutrient solution, the nutrients in the nutrient solution will become less and less, and because of the respiration and metabolism of roots, there will be more and more harmful substances in the water. So hydroponic flowers should be replaced with a new nutrient solution after a period of growth. In fact, this and soil cultivation of flowers is the same reason, soil cultivation of flowers to fertilize and change the soil once a year is also the reason. Hydroponic flowers in the vigorous growth of spring and summer water change time interval is shorter, slow growth in autumn and winter can be longer.

Simple hydroponic facilities-- bottles and cans and cultivation management

The use of waste containers, such as beverage cans, jars, white polystyrene hard foam boxes (boxes), etc., with a little finishing, can become hydroponic carriers of different sizes and shapes, which can not only adjust measures to local conditions and make the best use of things, but also green the surrounding environment. It has the interest of returning to nature.

I. bottles and cans

1. Such as metal beverage cans, glass or plastic bottles, paper foil square beverage boxes, etc., are originally filled with liquid, as long as the original contents are washed and refreshed, they can be used as hydroponic carriers.

two。 Planting cup: according to the size of the mouth of the selected container, choose the plastic cold drink cup, which is exactly the size of the mouth 1 to 3, as the carrier of anchoring plants. As shown in figure 1, dig out the "well" hole at the bottom of the cup so that the root system can reach into the nutrient solution through the bottom of the cup, and the anchors of the plant will not leak out. The opening also has the function of breathability.

3. Plant anchoring: prepare a piece of non-woven cloth (non-woven cloth) for clothing padding about 8 × 12 cm, rinse off the soil gently and do not damage the root system. Wrap the root system with non-woven cloth, and then use porous plastic sponge (debris cut off from coat pads, sofas, seat cushions, etc.), or a small amount of rock wool and glass wool (used as thermal insulation materials, there are yellow, there are also yellow with white) and other coarsening, so that it can be stuffed into the plastic planting cup to anchor the plant. In fact, do not have the above-mentioned things on hand, the use of flower paste, after proper cutting can also be used as anchoring material. The non-woven rolls enclosing the roots, together with the exposed roots, are immersed in bottles and jars containing nutrient solution. It must be noted that the surface of the nutrient solution should have a space distance of not less than 1 cm from the bottom of the planting cup. This is the key to the success or failure of hydroponics. With the help of the osmosis of non-woven fabric, the nutrient solution continues to supply the root system with nutrition for about half a month, and the nutrient solution decreases gradually with the growth and transpiration of crops. When the liquid level drops to 1 top 4 of the container height, a new nutrient solution can be added. At this time, the distance between the liquid level and the bottom of the planting cup can be larger, about 3 centimeters.

4. Cultivation management: if you use a transparent glass container, you must cover the bottle with a shade to avoid direct sunlight to breed algae and compete with the culture for nutrition. In summer, in order to prevent a substantial rise in liquid temperature caused by sunlight exposure, it is best to have shading measures, or put in a place where the sun cannot be exposed directly.

2. Box class

1. Box: usually used as a shock-proof polystyrene white rigid foam box, or corrugated cartons, wooden cases with a certain strength can be used. It is generally about 35 × 25 × 15 cm and 60 × 40 × 16 cm. If there is a hole in the bottom of the box, it can be paved with wood or foam board. The box is lined with black agricultural film to prevent nutrient solution leakage. If it is confirmed that the box does not leak and does not penetrate light, the film can be avoided. If there is no black film, other films can also be used.

two。 Upper cover: the function of upper cover and fixing plate. Find a polystyrene foam board with the same area as the box and about 2.5 cm thick as the upper cover and fixed planting board. A certain number of planting holes with a diameter of about 6 cm are opened on the board. Like bottles and cans, as long as the selected plastic cold drink cup can be placed in it, it will reveal about 1 inch and 2 cups high. The number of planting holes depends on the size of the box. It is generally 6 to 16 acupoints. In addition, a small hole with a diameter of 2 cm is opened near the inside of the box near the side of the upper cover, which is used to peep the liquid level of the nutrient solution and to add the nutrient solution.

3. Planting cup: select materials and prepare the same bottles and cans.

4. Floating board: take a polystyrene foam board which is 2.5cm less than the net area of the box and 2.5cm thick as a floating board. There are regular holes with a diameter of 1cm to 2cm to increase the air content of the floating board and facilitate the root system to extend into the nutrient solution. The floating board is covered with a thin layer of rock wool (about 1 cm dry thickness), or glass wool of the same thickness, or 250g / m2 of non-woven cloth, which is used to absorb nutrient solution. When it is really impossible to get these things, medical sterilized skim gauze can also be used instead. The area of the cotton infiltration layer is about 6 cm more than that around the floating board, so that the excess part laid on the floating board can freely droop from around the floating board (like an apron) and soak into the nutrient solution to absorb the nutrient solution, so as to ensure that a wet layer with nutrient solution is formed on the floating board. The roots of plants can stretch freely on the floating board and have more direct contact with the air. Another part of the root system can still absorb nutrients through the four sides of the floating board or through the holes in the floating board into the nutrient solution. This method can make up for the unfavorable environment that the general hydrostatic culture can not circulate nutrient solution and oxygenation.

5. Cultivation management:

The main results are as follows: (1) pour the prepared nutrient solution into the cultivation box. At the beginning of planting, the liquid level should be slightly higher, and the floating board should touch the non-woven root roll protruding from the planting cup, so that the nutrient solution can be absorbed. The highest liquid level must have some space in the cultivation box. When the nutrient solution is reduced to 3-5 cm with the absorption and transpiration of the plant, the nutrient solution should be added until the liquid depth is about 10 cm.

(2) when the nutrients of the nutrient solution change greatly, or when there is precipitation, turbidity, stench and pathogen infection, the nutrient solution should be updated as appropriate until it is completely updated.

Cyclamen hydroponics

Planting cyclamen in water has only begun to appear in Europe in the last year or two. Because this cultivation method makes cyclamen break away from the traditional flowerpot and matrix, it is clean and beautiful, and it can endow the blooming cyclamen plant with a variety of cultivation and application forms. As soon as it appears in the market, it has won the warm welcome of consumers. In fact, cyclamen is not difficult to grow in water. First of all, we should choose satisfactory cyclamen potted flowers and prepare containers for hydroponic cyclamen, so that when the preparation work is completed, we can begin to make hydroponic cyclamen. Hydroponic cyclamen should deduct the bought cyclamen potted flowers together with the substrate (flower soil) from the basin, put them under the faucet and wash the matrix clean with a gentle flow of water, or you can put the plant together with the matrix in a water basin filled with water. rinse the matrix in water, and then rinse it with tap water. Note that the action must be gentle in the whole process of removing the matrix to avoid damage to the roots of cyclamen. Washed cyclamen plants can be placed in a pre-prepared hydroponic container, plus water, beautiful hydroponic cyclamen is made.

It should be pointed out that there is no need to add any fertilizer to the water to cultivate cyclamen. The nutrients in the bulb of cyclamen can maintain the normal growth and flowering of cyclamen for 6 weeks. At the same time, the height of the water surface should be kept below the bulb. In general, according to the evaporation of water, water can be added to the container twice a week to maintain the height of the water surface.

In fact, in cyclamen hydroponics, cyclamen plant is only one of the factors. In order to make hydroponic cyclamen with distinctive characteristics and outstanding personality, it also depends on the selection of hydroponic utensils and the combination of cyclamen plants. It all depends on the producer's unique perspective and flexible creativity.

Water culture method of keeping ball orchid and root in water

The orchid has always been cultivated with soil. Through the experiment of exposed root hydroponics, it has the following characteristics: ① saving labor, ② sanitation, less ③ diseases and insect pests, simple ④ management, long flowering period of ⑤, and ⑥ appreciating leaves and flowers with considerable roots.

The method of water culture of dew root is:

(-) Seedling treatment: dig up the soil-grown orchids, wash them with clean water, cut off withered leaves and leaves of diseases and insect pests, and soak them in diluted flower nutrient solution for half a day.

(2) on the basin: take a glass bottle or vase (without bottom hole), put several beautiful river stones at the bottom of the bottle, move the treated orchid seedlings onto the river stone of the vase, unfold the roots, add clear water, add flower nutrient solution, and place them indoors or in a cool place.

(3) Management: first, spray leaves with clear water once a day, spray leaves with flower nutrient solution every three to four days after one or two days: change water on one side every 15 days, and add nutrient solution after changing water; third, one month after the pot, the head of orchid is injected with flower nutrient solution, half a milliliter at a time, and then once a month to promote growth, flowering and prolong flowering.

(4) it can blossom in about two to three months after potting. Flowers withered after pruning, change water, add nutrient injection, can blossom again.

There is a difference between hydroponic culture and hydroponic cultivation of flowers.

In recent years, some hydroponic and hydroponic flowers are favored by people because of their freshness and environmental protection, elegant style, easy maintenance and easy combination. On the face of it, hydroponic and hydroponic flowers are cultivated in the same form, that is, liquid conservation, so many people confuse the two. In fact, they are obviously different.

Flowers used for water culture generally have inflated bulbs, which are rich in nutrients, and their growth and flowering mainly rely on their own stored nutrients. During cultivation, it is only necessary to soak the roots in clean water and fix them without supplying nutrients. The main flowers suitable for water cultivation are daffodils, tulips, hyacinth, rich bamboo and so on. In order to make hydroponic flowers grow luxuriantly and blossom brightly, the key is to select fully developed bulbs to provide nutrients for their growth process; the second is to change water frequently and change water every 2-3 days (rich bamboo every 7-10 days) to maintain sufficient oxygen content in water and improve root activity; third, to maintain sufficient sunshine to make it grow healthily.

Hydroponic flower culture is to fix the plant root on the cover or floating board of the flowerpot and soak the root system in water, which must be equipped with reasonable inorganic nutrition, so flower hydroponics is also called nutrient solution culture. The habits and internal structure of flowers suitable for hydroponic culture are suitable for normal growth in water. At present, the main varieties cultivated are orchid, orchid, crab claw orchid, Brazilian wood, evergreen, clump taro, tortoise back bamboo, gemstone flower, hanging bamboo plum, rooting and other plants.

Northeast University of China has adopted bioengineering mutagenesis technology and has developed nine series of more than 500 species of hydroponic flowers after 8 years of efforts, including both herbaceous flowers and woody flowers, cacti and succulent plants. It also includes flowering flowers such as orchid and Phalaenopsis. With the progress of technology, some high-grade flowers introduced from abroad in recent years, such as pineapple, Anthurium andraeanum, Zhu Dinghong, etc., have also successfully realized hydroponic culture. There are also some flowers with Chinese characteristics, such as tiger tongue orchid, etc., have also been domesticated by hydroponics.

The root characteristics of hydroponic flower plants have changed, root hairs have degenerated, and most of them are vertical straight roots, unlike hydroponic plants whose roots and root hairs are reticulated. After aquatic mutagenesis, the aquatic root gene of plants has been expressed, so the leaves of real aquatic flowers will increase and thicken, and the leaves and branches will be more fresh and tender than those growing in the soil.

The key to hydroponic flower culture is to prepare a good nutrient solution. Do not use metal containers or containers containing grease, acid and alkali in the preparation of nutrient solution. When using tap water to prepare nutrient solution, a small amount of humic acid compounds should be added to treat chlorides and sulfides in the water. Hydroponic flowers are added or changed once a week, and the pH value should be controlled between 5.5 and 6.5. The nutrient solution can be used as fertilizer for other crops.