Water and soil moisture management are very important factors in strawberry cultivation, and they directly affect strawberry growth and yield. Full moisture and suitable soil moisture can promote strawberry growth and grow faster and higher; proper soil moisture can maintain soil nutrients and prevent soil loss, thus maintaining soil fertility. In addition, adequate moisture and suitable soil moisture can make the strawberry grow more healthily, thus improving its quality and reducing the occurrence of hollow fruit. Therefore, in strawberry cultivation, reasonable water and soil moisture management is very important, growers need to carry out timely irrigation and drainage according to the growth of strawberry, to ensure the growth and yield of strawberry. Its disadvantages include the following: vulnerable to diseases and pests, high requirements for climatic conditions, high requirements for climatic conditions and high production costs. As a new agricultural technology, hydroponics can save land resources and reduce land pollution by cultivating plants in containers instead of planting plants on the land.

  • Sufficient water and suitable soil moisture can promote the growth of strawberries and reduce the occurrence of hollow fruit.

  • In strawberry cultivation, reasonable water and soil moisture management is very important.

  • Growers need to perform drainage and irrigation in time according to the growth of strawberries to ensure the growth and yield of strawberries.

Strawberry is a red and fragrant fruit that grows on a strawberry plant, which belongs to the rose family. It has a sweet taste and delicate flesh. As an important emerging technology, hydroponic planting technology has a wide range of applications and brings great benefits to agricultural production. It mainly includes the following aspects: vegetable planting, fruit tree planting, flower planting, Chinese herbal medicine planting and plant factory. Compared with traditional soil planting technology, hydroponic planting technology has the following advantages: efficient use of resources, controllable production environment, short production cycle, high food safety and space saving. Therefore, it is a good choice to plant strawberries with hydroponics. Strawberries would grow in nutrient solution without soil and other traditional fertilizers. This technology can provide a more suitable growth environment for strawberries, improve production efficiency and yield and also maintain the quality and taste of strawberries.

According to the relevant information, this paper lists the following scholars' research on strawberry cultivation. Sharma studied the virus and virus-free planting materials of strawberries, and pointed out that strawberries are extremely susceptible to virus infection, causing great damage to strawberry planting. Therefore, he conducted research on the planting of virus-free strawberry, and successfully achieved a well-developed strawberry plant that is free of virus disease and other pests and meets the standard (Sharma 2018a). Torres-Quezada believed that the planting date of strawberries in early autumn was conducive to early flowering and fruiting. He pointed out that a large amount of irrigation water was needed in the first few days after strawberry transplanting. His research determined the best planting date of strawberry bare-root transplantation and evaluated the most suitable planting practice (Torres-Quezada 2018). Hossain believed that applying chemical fertilizers was one of the most concerned topics in sustainable and eco-friendly production. Applying different organic fertilizers was an eco-friendly and safe crop production technology. He studied the effects of different planting media with different organic fertilizers on the growth, yield and quality of strawberry. Under the condition of fertilization, the quality of strawberry fruit mixed with organic fertilizer was better (Hossain & Rashid 2022). In order to explore the potential of strawberry regeneration in vitro, Mir carried out experiments on separate and combined media with different concentrations of cytokinin and auxin on the medium (Mir 2019). Strawberry cultivation is an important research field, and the research topics have been discussed in many directions. These research works have certain reference values. However, these research directions do not combine strawberry cultivation with hydroponics, which limits the depth and practicability of further research in this subject.

In order to carry out more in-depth research, after consulting the data, this paper found the following research literature on strawberry cultivation and hydroponics planting technology. Asaduzzaman studied the autotoxicity of recycled hydroponics on strawberries and its mitigation methods. He believed that recycling hydroponics could make planting cost-effective, sustainable and environmentally friendly. In the circulating water culture system, the growth of strawberry plants was inhibited by root exudates which mainly contained phenolic acids in the culture medium. Adding activated carbon to the nutrient solution, adding auxin to the leaves, and electrodegrading the root exudates in the nutrient solution can effectively reduce the autotoxicity of strawberries grown under the condition of cyclic hydroponics (Asaduzzaman & Asao 2020). Rana studied the effects of different treatment combinations on the growth and yield of strawberry under the conditions of hydroponics and pot culture. The results showed that the strawberry yield of hydroponic culture system was higher than that of soilless medium and soil. Therefore, compared with soilless media or soil, plants under hydroponic culture system were easier to obtain nutrients and obtain the maximum net return and the maximum benefit–cost ratio (Rana & Prasad 2022). After reading the research results of the scholars, it can find that these studies have great enlightenment on the research of this topic. However, these studies are only carried out in theory and lack practical application value and authenticity. Therefore, this paper would conduct more practical investigation and research to further optimize these research issues, so as to better promote the research of this topic.

The research topic of this paper was the hydroponic strawberry cultivation technology and the analysis of the active components of the fruit. The hydroponic planting technology was used to optimize the quality of strawberry planting through the ion concentration detection algorithm based on the hydroponic planting technology. The experiment showed that the accuracy of the traditional ion concentration detection algorithm for K+, Na+, Ca2+ and Mg2+ is 92.7, 92.6, 92.5 and 93.2%, respectively. The detection accuracy of ion concentration detection algorithm based on hydroponics planting technology was 96.7, 95.2, 96.4 and 97.5%, respectively. It can be seen that the ion detection ability of the algorithm proposed in this paper is more powerful. In addition, it also has a faster detection speed. The innovation of this paper is that the planting process of strawberry is optimized by using hydroponic planting technology, which improves the activity of strawberry fruit and improves the quality of strawberry.

Concept and advantages of hydroponics technology

Hydroponics is a technology that uses nutrient solution instead of soil to plant plants (Sharma 2018b; Khan et al. 2020). Compared with traditional soil planting techniques, hydroponic technology has the following advantages: water saving, increased yield, less pests and bacteria, and more environmental protection, etc. It is widely used in agriculture, horticulture, flower production and other fields, which can improve crop yield and quality, reduce production costs and environmental pollution. In general, hydroponics technology is an efficient, environmentally friendly and economic agricultural production mode, which is worthy of extensive promotion and application. The following are the advantages of hydroponics technology:

  • (1)

    Save land resources

Hydroponics is a modern agricultural technology that uses water as the medium and uses plant roots to absorb nutrients (Manos & Xydis 2019; Zhao 2022). The planting technology does not need soil and can use existing buildings, greenhouses and other spaces for planting, reducing the land occupation. Compared with traditional soil planting, hydroponics technology has many advantages, as follows:

Use of indoor space for agricultural production: Compared with traditional soil planting, hydroponics technology can use indoor space for agricultural production. It does not need to occupy a lot of land resources, so it can carry out agricultural production on limited land resources such as cities and mountains.

Improve soil quality: Hydroponics can use nutrient solution instead of soil to reduce the accumulation of pesticides, heavy metals and other harmful substances in the soil, thus improving soil quality.

  • (2)

    Reduce production costs

Water culture technology uses nutrient solution instead of soil, which can effectively reduce planting costs and improve crop yield and quality. The main reasons include the following:

Reduce the use cost of water and fertilizer: The hydroponics technology is different from the traditional soil planting method. It uses nutrient solution to cultivate plants, thus reducing the use cost of water and fertilizer.

Improve production efficiency: Hydroponics technology can accurately control the nutrients and water required for plant growth, thus improving production efficiency and reducing production cycle.

Reduce labor costs: Hydroponics technology can be produced through automatic equipment without too much manual intervention, thus reducing labor costs.

  • (3)

    Reduce environmental pollution

Hydroculture technology can avoid the pollution of heavy metals, pesticides and other harmful substances in the soil to the environment, and has a positive effect on the ecological environment. Hydroponics can reduce environmental pollution, mainly due to the following factors:

Protection of water environment: Hydroponics technology can be used for agricultural production indoors without occupying a lot of land resources, thus reducing the impact on the natural environment and protecting the water environment.

Reduce the accumulation of harmful substances such as pesticides and heavy metals: since the Ministry of Matchmaking Technology uses nutrient solution for planting, its planting process is more environmentally friendly, thus reducing the use of pesticides and fertilizers and reducing agricultural pollution.

Reduce soil loss: Hydroponics technology can reduce the loss of nutrients in the soil, because in the soilless environment, the roots of plants are directly immersed in water, rather than absorbing and losing nutrients in the soil, which can reduce the loss of nutrients in the soil and avoid pollution to the environment.

Reduce the discharge of wastewater: In the process of hydroponics, the nutrients and water required by plants are directly obtained from the water, without a lot of irrigation and cleaning, so it can reduce the discharge of wastewater and reduce the pollution to the environment.

  • (4)

    Improve crop quality

Hydroponics technology can provide a suitable growth environment to make crops grow faster, taste better and have higher quality. Hydroponics can improve the quality of crops. The main reasons include the following:

Precise control of water and nutrient supply: Hydroponics technology can provide water and nutrients required by crops and improve the quality and yield of crops by precisely controlling water and nutrient supply.

Reduce the occurrence of diseases and pests: Different from traditional planting methods, hydroponics technology abandons the use of soil. Therefore, it reduces the diseases and insect pests in the soil, thus reducing the impact of crops on diseases and insect pests, and improving the quality and yield of crops.

Improve the resistance of crops: Hydroponics can improve the resistance of crops by accurately controlling the water and nutrient supply, thus increasing the adaptability of crops and improving the quality and yield.

The advantages of hydroponics are shown in Figure 1.
Figure 1

Advantages of hydroponics technology.

Figure 1

Advantages of hydroponics technology.

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Application of hydroponic planting technology

Hydroponic planting technology usually uses nutrient solution to provide nutrients for plant growth, rather than soil or other traditional fertilizers (Kularbphettong et al. 2019; Lakshmanan 2020). This technology can provide cleaner and more efficient planting methods, and can better control the growth environment of plants, thus improving the yield and quality. Hydroponic planting technology can be applied to various plants, including vegetables, flowers, medicinal plants, etc. The details are as follows.

  • (1)

    Hydroponic vegetables and fruits

The advantages of hydroponics technology are that it can effectively control the growth environment of plants, avoid pathogens transmitted by soil and save water. Therefore, hydroponic vegetables and fruits are usually cleaner and safer than traditional vegetables, because they do not need to use pesticides or fertilizers, thus making vegetables healthier and pollution-free (Quagrainie 2018; Hidayanti et al. 2020). Here are some examples:

Leaf vegetables: Hydroponic culture technology can plant leafy vegetables under soilless conditions, such as lettuce, spinach and garland chrysanthemum. It can effectively avoid pathogens transmitted by soil, and can provide sufficient nutrients and water to promote plant growth and yield.

Stem vegetables: Stem vegetables plant refers to the stem as the picking part of the vegetables, usually can be divided into celery, coriander, leek, onion and so on. The cultivation of hydroponic stem vegetables needs to pay attention to nutrients, water quality, temperature and other factors. Different stem vegetables also have different requirements for nutrients, which need to be adjusted according to the specific situation.

Melons and fruits: Hydroponic culture technology can plant melons and fruits vegetables, such as watermelon, cucumber and tomato, under soilless conditions. This method can effectively avoid pathogens transmitted by soil, control the growth of plant roots, make them more slender and make the fruits in plants more beautiful and nutritious.

Vanilla: The use of hydroponics to plant vanilla plants, such as mint, rosemary, thyme, can improve the yield and quality of plants, while maintaining the freshness of plants.

  • (2)

    Hydroponic flowers

Hydroponic flower cultivation is a very environmentally friendly and energy-saving flower planting method. It grows by directly immersing plant roots in water. Hydroponic flowers are usually cultivated in glass containers or plastic containers, which can make plant roots better absorb water and nutrients, and can better observe the growth of plants. Hydroponic flowers are usually more beautiful and elegant. Because their growing environment is more stable, they can better maintain the shape and color of plants. The following is the application of hydroponic culture technology in hydroponic flowers:

Indoor ornamental plants: Hydroponic technology can be used to plant ornamental plants in homes and offices, such as Chlorophytum comosum, aloe and flowers. These plants can obtain nutrition and water by growing in containers filled with water.

Fresh cut flowers: Hydroponics can be used to plant cut flowers, such as daffodils, hyacinths and roses. These flowers can grow without soil and have a longer preservation period in water.

Hydroponics potted plants: Hydroponics technology can be used to plant a variety of potted plants, such as Chlorophytum comosum, Ivy, aloe and bamboo. These plants grow in water and can provide good decorative effects.

Horticultural plants: Hydroponics can be used to grow horticultural plants, such as vegetables and herbs. These plants can grow without soil and can be planted indoors and outdoors.

  • (3)

    Hydroponic medicinal plants

Hydroponics technology can effectively control the growth environment of plants, improve the content of active ingredients in plants, reduce pathogens transmitted by soil and obtain better yield and quality. In the cultivation of medicinal plants, hydroponics technology has the following applications:

Aloe vera: Aloe vera is a common medicinal plant with many health effects. In hydroponic cultivation, the growth of its root system can be controlled to make it more slender and make the active components in the plant more concentrated.

Ginseng: Ginseng is a kind of nourishing medicine. Hydroponic culture technology can make it grow in soilless conditions, effectively avoiding soil-borne pathogens.

Bupleurum chinense: Bupleurum chinense is a common traditional Chinese medicine. Hydroculture technology can control the growth of its root system, make it more slender and make the active ingredients in the plant more concentrated.

The application of hydroponic planting technology is shown in Figure 2.
Figure 2

Application of hydroponic planting technology.

Figure 2

Application of hydroponic planting technology.

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Operation process of hydroponic planting technology

During hydroponic planting, different plant varieties are suitable for different hydroponic conditions, and need to be selected according to specific environment and conditions (Alipio 2019). Secondly, the quality and proportion of hydroponic medium and nutrient solution directly affect the growth of plants, and should be selected and adjusted according to the needs of plants. In addition, the hydroponic environment and growth conditions of different plant varieties are different, which need to be adjusted and controlled according to the actual situation. Finally, the growth of plants should be regularly observed, maintained and managed in time to ensure the healthy growth and good performance of plants. In general, hydroponic planting technology needs to pay attention to details and experience, and constantly study and explore, in order to achieve better results. The operation process of hydroponic planting technology is as follows:

  • (1)

    Equipment selection

Hydroponic planting technology needs to use some specific equipment and tools. The selection of equipment needs to be determined according to the growth needs and actual conditions of plants. Selecting appropriate equipment can help improve the production efficiency and quality of plants. The following are common equipment selection and operation steps:

Aquaculture box: Transparent aquaculture box can be selected to facilitate the observation of plant growth. The size of the box should be selected according to the growth needs of plants to ensure that there is enough space for plants to grow.

Substrate: Foam board, putty board, perlite, etc., are usually selected as the substrates for hydroponic planting, and appropriate substrates need to be selected according to the size of plant roots. In addition, the hydroponic matrix contains the nutritional elements needed for plant growth, such as nitrogen, phosphorus, and potassium, which can provide the nutrients needed by plants.

Light source: Light is one of the important factors for plant growth, and the selection of appropriate light source is very important for hydroponics. Commonly used light sources include fluorescent lamps, incandescent lamps, etc. Their light intensity and spectrum need to be considered when selecting.

Water pump: The water pump is the key equipment in hydroponics, which is used to circulate the nutrient solution and ensure that the root system of the plant gets enough nutrients and oxygen. The flow and power should be considered when selecting the pump.

  • (2)

    Preparation of nutrient solution

The nutrient solution in hydroponic planting technology is an important basis for plant growth, and the allocation of nutrient solution needs to be determined according to plant growth needs and actual conditions. It can be mixed according to the correct operation steps, which can help improve the growth efficiency and quality of plants. The details are as follows:

Selection of nutrient salt: The appropriate type and proportion of nutrient salt can be selected according to the growth stage and variety of plants. Generally, the nutrient solution needs to contain nitrogen, phosphorus, potassium, magnesium, iron, calcium and other elements.

Accurate weighing: Various nutrient salts can be accurately weighed according to the formula proportion, and the purity and water content of the salt powder should be paid attention to ensure the accuracy of the formula of the maintenance solution.

Dissolved nutrient salts: Various nutrient salts can be added into water one by one, and then stirred to dissolve until the nutrient solution becomes uniform and transparent.

Check the nutrient solution: After the nutrient solution is prepared, it is necessary to check to ensure that the concentration and pH value of various nutrients meet the needs of plant growth.

  • (3)

    Plant colonization

In order to ensure the health and stability of plant growth, the selection and adjustment of seedlings, containers, planting holes and environment, as well as regular monitoring of plant growth and timely management and adjustment are required for the plant planting operation in hydroponics planting technology. The specific steps are as follows:

Prepare seedlings: In the hydroponics planting technology, mature seedlings taken from traditional land cultivation or seedlings specially cultivated for hydroponics can be used. No matter what kind of seedlings are used, it is necessary to ensure that they are healthy, energetic and free from diseases and pests.

Prepare the container: It can select a suitable container and pour the nutrient solution into the container. The container size would also vary according to the cultivation requirements and planting scale of plants.

Positioning planting holes: Planting holes can be dug in the container. The size and spacing of each hole can be determined according to the size and quantity of plants. The depth of the hole should be equal to the root length of the seedlings.

Planting seedlings: The seedlings can be gently put into the planting hole, the root system can be extended, and pay attention not to excessively extend or break the root system. The seedlings can be wrapped with nutrient solution to ensure that the roots are completely covered, and at the same time, the stems of the seedlings should not be buried too deep in the nutrient solution.

  • (4)

    Hydroponic management

The hydroponics management operation in hydroponics planting technology is very important, which directly relates to the growth and development of plants and the yield. It needs to replace the nutrient solution regularly, keep the water clean, control the temperature, humidity, light and other environmental conditions, and timely carry out disease and pest control. The following are the hydroponics management operations in hydroponics planting technology:

Replacement of nutrient solution: The nutrient solution used in hydroponic planting technology needs to be replaced regularly, usually every 7–10 days. When replacing the nutrient solution, it is also necessary to clean the container to ensure that the nutrient solution does not contain harmful substances such as bacteria and viruses.

Maintain appropriate temperature and humidity: Plant growth in hydroponics requires appropriate temperature and humidity, which is usually the best in the environment of 20–25 °C, and the humidity is about 50–70%. It is necessary to adjust the ambient temperature and humidity according to the actual situation.

Light management: The growth of plants requires photosynthesis, so it is necessary to give appropriate light. Generally, it is necessary to maintain more than 12 h of light every day, and pay attention to avoid excessive light damage to plants.

Adjust the water level: In hydroponics planting technology, the water level needs to be kept at an appropriate position, usually about 2–3 cm below the root system. The water level needs to be checked regularly and adjusted as needed.

Cut-off dead leaves, diseased leaves and bad branches: It is necessary to check the leaves and branches of plants frequently, and cut-off dead leaves, diseased leaves and bad branches in time to avoid affecting the growth of plants.

The operation process of hydroponics technology is shown in Figure 3.
Figure 3

Operation flowchart of hydroponics technology.

Figure 3

Operation flowchart of hydroponics technology.

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In the process of plant growth, plant cells need to absorb many kinds of ions, such as K+, Na+, Ca2+ and Mg2+. These ions play a very important role in the growth of plants. They can affect the growth, metabolism, morphology and function of plants. When the amount and type of ions absorbed by plants are unbalanced, the growth and yield of plants would be affected. Therefore, by monitoring the ion content absorbed by plants, the growth status of plants can be judged, and then the nutrition supply of plants can be adjusted to improve the yield and quality.

The ion-selective electrode method can analyze the ion content in the solution through the functional relationship between the electrode potential and the ion concentration. In addition, the selective specificity of the sensitive membrane only produces potential response to specific ions. The sensitive membrane potential is shown in Figure 4.
Figure 4

Sensitive membrane potential diagram.

Figure 4

Sensitive membrane potential diagram.

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In the sensitive membrane, the membrane potential is equal to the sum of the solution connection potential and the interface potential inside and outside the membrane. When the ion concentration in the solution and the electrode membrane reach a dynamic equilibrium, the electrochemical potential on both sides of the sensitive membrane is equal, which is related to the ion concentration and the potential on both sides:
(1)

In the formula, and are chemical potentials, and in the ordinary state, they are equal. and are ionic concentrations.

R is the molar gas constant; T is the thermodynamic absolute temperature; N is the charge constant; F is the Faraday constant; and are phase potentials.

The formula can be converted to:
(2)
In the formula, it represents that the measured ion is anion or cation. Therefore, the interface potential is:
(3)
Similarly, the interface potential between the measured phase interface and the filled liquid in the electrode is:
(4)
The liquid-junction potential is formed according to the different diffusion rates of ions. Due to the symmetry of the sensitive film, the potential change caused by ion diffusion is very small and approximately zero. The ionic activity can be regarded as a constant value, so the sensitive membrane potential is equivalent to:
(5)
In the formula, the value of is:
(6)

The ion concentration detection algorithm based on hydroponics technology is a method to detect the ion absorption of plants using hydroponics technology. Specifically, the algorithm detects the ion concentration in the soil by combining hydroponic plants with ion absorption sensors and using the ion absorption behavior of plants to achieve comprehensive monitoring of plant growth.

In the previous section, this paper proposed an ion concentration detection algorithm based on hydroponics planting technology. In this section, it would test the performance of the algorithm. In this experiment, it needs to test the traditional ion concentration detection algorithm and the ion concentration detection algorithm based on hydroponics planting technology. The first step is to test the accuracy of ion concentration detection of the algorithm, and the results are shown in Table 1.

Table 1

Accuracy of ion concentration detection by different algorithms

Types of ionsTraditional ion concentration detection algorithmIon concentration detection algorithm based on hydroponic planting technology
K+ 92.7% 96.7% 
Na+ 92.6% 95.2% 
Ca2+ 92.5% 96.4% 
Mg2+ 93.2% 97.5% 
Types of ionsTraditional ion concentration detection algorithmIon concentration detection algorithm based on hydroponic planting technology
K+ 92.7% 96.7% 
Na+ 92.6% 95.2% 
Ca2+ 92.5% 96.4% 
Mg2+ 93.2% 97.5% 

From the experimental data in Table 1, it can be seen that the accuracy of the traditional ion concentration detection algorithm for K+, Na+, Ca2+ and Mg2+ is 92.7, 92.6, 92.5 and 93.2%, respectively. The accuracy of the ion concentration detection algorithm based on hydroponics planting technology is 96.7, 95.2, 96.4 and 97.5%, respectively. Obviously, the ion concentration detection algorithm based on hydroponics planting technology has more powerful ion detection capability.

In the detection of ion concentration, in addition to the detection accuracy, special attention should be paid to the detection speed. Therefore, the detection time of these two algorithms would be studied, and the experimental data is shown in Figure 5.
Figure 5

Detection time of different algorithms: (a) Detection time of traditional ion concentration detection algorithm. (b) Detection time of ion concentration detection algorithm based on hydroponics planting technology.

Figure 5

Detection time of different algorithms: (a) Detection time of traditional ion concentration detection algorithm. (b) Detection time of ion concentration detection algorithm based on hydroponics planting technology.

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According to the data in Figure 5(a) and 5(b), the average detection time of the traditional algorithm and the ion concentration detection algorithm based on hydroponics planting technology is 877.5 and 819.1 ms, respectively. This shows that the detection speed of ion concentration detection algorithm based on hydroponics planting technology is faster, and it can achieve rapid detection of ion concentration.

There are many bioactive components in strawberry fruit, among which polyphenols and flavonoids are the most important components. Polyphenol is an antioxidant that can protect cells from oxidative damage. Flavone is also a natural antioxidant, which has many biological functions such as antioxidation, anti-inflammatory and antibacterial. These components would affect the quality, color and flavor of strawberry fruit and other important factors. Therefore, the activity of strawberry fruit can be evaluated by investigating and measuring the content of polyphenols and flavonoids in strawberry fruit. In this experiment, a control experiment is carried out. The experimental group would use the hydroponic strawberry planting method, while the control group would use the traditional strawberry planting method. The investigation results of its fruit activity are shown in Figure 6.
Figure 6

Investigation of strawberry fruit activity with different planting techniques: (a) Investigation of strawberry fruit activity in traditional strawberry planting methods. (b) Investigation of strawberry fruit activity in hydroponic strawberry cultivation.

Figure 6

Investigation of strawberry fruit activity with different planting techniques: (a) Investigation of strawberry fruit activity in traditional strawberry planting methods. (b) Investigation of strawberry fruit activity in hydroponic strawberry cultivation.

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Through the analysis of Figure 6(a) and 6(b), it can be learned that when the strawberry grows to 35 days, the content of polyphenols and flavonoids in the strawberry fruit grown by traditional planting methods is 1.82 and 0.51 mg/g, respectively. The content of polyphenol and flavone in strawberry fruit planted by hydroponics was 1.96 and 0.63 mg/g, respectively. Obviously, compared with traditional planting methods, hydroponic planting can effectively improve the content of polyphenols and flavonoids in strawberry fruit, which indicates that hydroponic planting technology can improve the activity of strawberry fruit.

Strawberry is a very popular fruit with delicious taste, rich nutrition and various benefits. However, due to the shortcomings of traditional planting methods, its yield and quality are limited. Therefore, this paper used hydroponic planting technology to plant strawberries. In the process of planting, attention should be paid to selecting appropriate planting time, planting density and planting depth to ensure the stability of strawberry growth environment. During the preparation of hydroponic nutrient solution, appropriate nutrient elements and concentrations can be selected according to the growth needs of strawberries to ensure the supply of nutrients needed for the growth of strawberries. Finally, in the process of strawberry growth, it should strengthen the water management, temperature management, light management and nutrient management of strawberry to ensure the good growth of strawberry. The ion concentration detection algorithm based on hydroponics planting technology proposed in this paper plays an important role in this paper. Experiments show that the ion concentration detection algorithm has more accurate ion concentration detection ability and faster detection speed. In addition, in the experiment, hydroponics planting technology can promote the activity of strawberry fruit. After using hydroponics technology, the content of polyphenols and flavonoids in strawberry fruit can be effectively increased, which indicates that hydroponics planting technology can improve the activity of strawberry fruit. In the future, with the development of technology and people's increasing attention to sustainable production and environmental protection, hydroponic planting technology would be widely used in many fields in the future. The following are some possible application areas: hydroponic planting technology can be used to produce medicinal plants, which can provide high-quality and efficient pharmaceutical ingredients. This technology can also be used to produce natural medicine to meet the demand of more and more people for natural medicine. Ecological and environmental protection: hydroponic planting technology does not require the use of chemical fertilizers and pesticides, which can avoid environmental pollution. In addition, this technology can also be used for urban phytoremediation and indoor air purification to improve the quality of urban ecological environment. However, there are still some shortcomings in this study. First, the hydroponic method needs to provide sufficient light and oxygen: strawberry plants need sufficient light and oxygen to grow in water, otherwise it will easily affect the growth efficiency of the plants. Secondly, the quality of strawberries produced by hydroponics may be affected: because the environment of hydroponics is different from that of traditional soil cultivation, the quality and taste of strawberries may be affected.

No funding was used to support this study.

All relevant data are included in the paper or its Supplementary Information.

The authors declare there is no conflict.

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