Sweet potato three-dimensional planting equipment and planting method thereof

Abstract

The invention relates to the field of sweet potato planting, and particularly discloses a sweet potato three-dimensional planting device and a planting method.The sweet potato three-dimensional planting device comprises a planting bag which is 60 cm in depth, 40 cm in length and 40 cm in width and used for containing soil and sweet potato plants; the inner space of the planting bag is divided into an upper layer and a lower layer, four sweet potato seedlings can be cut in each layer, and three-dimensional planting is achieved. Water eliminating holes are formed in the bottoms of the planting bags and used for draining water to prevent water from accumulating at the roots of the sweet potatoes; the drip irrigation device comprises a drip irrigation tape cloth tape; by means of the unique planting bag design, efficient space utilization and three-dimensional planting are achieved, more sweet potato seedlings can be planted in the limited space, the planting efficiency of the unit area is improved accordingly, the drip irrigation device conducts precise irrigation, fertilization and pesticide application through the drip irrigation belt cloth belt, reasonable utilization of water and fertilizer resources is ensured, and the economic benefit is increased. And the waste of resources is reduced.

Description

Technical Field

[0001] The invention belongs to the field of sweet potato planting, in particular to a three-dimensional sweet potato planting device and a planting method thereof. Background Art

[0002] Sweet potatoes are suitable for growing in places with plenty of sunshine, good drainage, loose and fertile soil. Sandy loam and loam are the best soils, which have good air permeability and are conducive to the respiration and photosynthesis of sweet potatoes. At the same time, low-lying areas should be avoided, because sweet potatoes are afraid of flooding, and water accumulation in low-lying areas can easily lead to root rot. Saline-alkali land is also not suitable for the growth of sweet potatoes, which will affect their normal development. Continuous cropping should also be avoided. Continuous planting of sweet potatoes will lead to the accumulation of diseases and pests in the soil, affecting yield and quality.

[0003] As an important food crop, the cultivation methods and techniques of sweet potatoes have been constantly developing and improving.

[0004] Traditional sweet potato planting methods mostly use flat planting, and the land utilization rate is relatively low. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a three-dimensional sweet potato planting device to solve the problem that most traditional sweet potato planting methods in the prior art adopt flat planting and have relatively low land utilization rate.

[0006] A three-dimensional sweet potato planting device, comprising:

[0007] The planting bag has a depth of 60 cm, a length and a width of 40 cm, and is used to contain soil and sweet potato plants; the internal space of the planting bag is divided into two layers, each layer can be used to graft 4 sweet potato seedlings, so as to achieve three-dimensional planting; a drainage hole is provided at the bottom of the planting bag for drainage to prevent water accumulation at the roots of the sweet potatoes;

[0008] A drip irrigation device, including a drip irrigation tape, wherein the drip irrigation tape is connected to the upper middle position of each planting bag and is used for irrigation, fertilization and pesticide application;

[0009] The photosynthesis enhancement device is installed around the three-dimensional sweet potato planting equipment to simulate the spectrum of natural light and adjust the light intensity and spectrum according to the different stages of sweet potato growth to enhance the photosynthesis efficiency of the sweet potato plants.

[0010] Preferably, the planting bag is made of non-woven fabric, which has good air permeability and water retention.

[0011] A three-dimensional sweet potato planting method, comprising the three-dimensional sweet potato planting device as described above, and further comprising the following steps:

[0012] S1. Choose the right soil;

[0013] S2. Put the soil into the planting bag, making sure the soil is filled evenly;

[0014] S3. Plant 4 sweet potato seedlings in each of the upper and lower layers of the planting bag, maintaining appropriate spacing between plants and rows;

[0015] S4. Place the planting bags evenly on the ground, with a distance of 40 cm between the bags, to ensure that the sweet potato vines have enough space to climb;

[0016] S5. Adjust the light intensity and spectrum through the photosynthesis enhancement device to adapt to different stages of sweet potato growth, and use the photosynthesis efficiency evaluation formula to quantitatively evaluate the photosynthesis efficiency;

[0017] S6. The sweet potato plants are irrigated, fertilized and pesticided through the drip irrigation system to achieve the integrated application of water, fertilizer and pesticide, and the final evaluation is carried out using the comprehensive evaluation formula for sweet potato yield and quality.

[0018] Preferably, the soil is fertile and loose sandy soil as the cultivation medium.

[0019] Preferably, the photosynthesis efficiency evaluation formula is as follows:

[0020]

[0021] in:

[0022] E photosynthesis is the photosynthesis efficiency ratio of sweet potato plants;

[0023] t0 and t1 are the time points at which the assessment starts and ends, respectively;

[0024] n and m are the number of wavelengths considered in LED grow lights and sunlight, respectively;

[0025] λ i (t) and λ′ j (t) are the wavelengths of LED light and sunlight considered at time t, respectively;

[0026] I LED (t,λ i ) and I sun (t,λ′ j ) are respectively the LED light and sunlight at time t and wavelength λ i and λ′ j The light intensity under

[0027] α i,potato (λ i ) and α j,potato (λ′ j ) are the wavelengths of sweet potato plants at i and λ′ jPhotosynthesis absorption rate under ;

[0028] β watering and β fertilization are irrigation and fertilization efficiency factors, respectively;

[0029] E photosynthesis The value range of is [0, +∞), where 1 means that the photosynthesis efficiency of the light simulated by the LED light is the same as that under natural light, greater than 1 means that the LED light improves the photosynthesis efficiency, and less than 1 means that it decreases.

[0030] Preferably, the comprehensive evaluation formula for sweet potato yield and quality is as follows:

[0031]

[0032] in:

[0033] Y potato It is the comprehensive score of yield and quality per unit area of ​​sweet potato;

[0034] A is the planting area of ​​the sweet potato three-dimensional planting equipment;

[0035] P(x,y) is the yield density of sweet potato at position (x,y);

[0036] Q(x,y) is the quality score of the sweet potato at position (x,y);

[0037] Y is the enhancement coefficient of photosynthesis efficiency on yield and quality;

[0038] δ climbing It is the improvement factor of sweet potato vine climbing frame on yield and quality;

[0039] ∫∫ A dA represents the double integral of the planting area A, which is used to calculate the total area;

[0040] Y potato The value range of is [0, +∞), where a higher value indicates a higher comprehensive score of sweet potato yield per unit area and quality.

[0041] Preferably, after the planting bags are placed, a rack is built for the sweet potato vines to climb, so as to improve the yield and quality of the sweet potatoes.

[0042] Preferably, the irrigation, fertilization and pesticide application are all precisely controlled by a drip irrigation system to reduce the amount of water, fertilizer and pesticide used and improve resource utilization efficiency.

[0043] Preferably, the photosynthesis enhancing device includes an LED plant growth lamp, which can simulate the spectrum of natural light and adjust the light intensity and spectrum according to different stages of sweet potato growth to enhance the photosynthesis efficiency of sweet potato plants.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] Through the unique planting bag design, efficient use of space and three-dimensional planting are achieved, so that more sweet potato seedlings can be planted in a limited space, thereby improving the planting efficiency per unit area. The drip irrigation device uses drip irrigation tapes to accurately irrigate, fertilize and apply pesticides, ensuring the rational use of water and fertilizer resources and reducing resource waste. At the same time, the photosynthesis enhancement device adjusts the light intensity and spectrum according to the different stages of sweet potato growth, improves the utilization efficiency of light energy, and further optimizes resource utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0047] Figure 2 It is a schematic diagram of the planting method of the present invention.

[0048] In the picture: 1. Planting bag; 2. Drip irrigation device; 3. Photosynthesis enhancement device. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] like Figure 1 and Figure 2 As shown:

[0051] Embodiment 1: The present invention provides a three-dimensional sweet potato planting device, comprising:

[0052] Planting bag 1, which has a depth of 60 cm, a length and a width of 40 cm, is used to contain soil and sweet potato plants; the internal space of planting bag 1 is divided into two layers, each layer can be used to graft 4 sweet potato seedlings, so as to realize three-dimensional planting; a drainage hole is provided at the bottom of planting bag 1 for drainage to prevent water accumulation at the roots of sweet potatoes;

[0053] A drip irrigation device 2, comprising a drip irrigation tape, which is connected to the upper middle position of each planting bag 1 and is used for irrigation, fertilization and pesticide application;

[0054] The photosynthesis enhancement device 3 is installed around the three-dimensional sweet potato planting equipment to simulate the spectrum of natural light and adjust the light intensity and spectrum according to the different growth stages of the sweet potato to enhance the photosynthesis efficiency of the sweet potato plants.

[0055] Specifically, the planting bag 1 is made of non-woven fabric, which has good air permeability and water retention.

[0056] It can be seen from the above that the present invention combines an efficient planting bag, a precise drip irrigation device and an advanced photosynthesis enhancement device. The planting bag is uniquely designed with a depth of 60 cm and a length and width of 40 cm. The internal space is divided into two layers, each of which can accommodate 4 sweet potato seedlings, achieving efficient use of space and three-dimensional planting. A water-draining hole is provided at the bottom of the planting bag to effectively drain water and avoid the problem of water accumulation at the roots. The drip irrigation device uses drip irrigation belts to accurately irrigate, fertilize and apply pesticides, ensuring the rational use of water and fertilizer resources. In addition, the photosynthesis enhancement device simulates the natural light spectrum and adjusts the light intensity and spectrum according to the growth stage of sweet potatoes, which significantly improves the photosynthesis efficiency of sweet potato plants. The planting bag is made of non-woven fabric, which has good air permeability and water retention, and provides an ideal microenvironment for the growth of sweet potatoes. In summary, the three-dimensional sweet potato planting equipment not only improves the planting efficiency, but also optimizes resource utilization, providing a strong guarantee for the high yield and high quality of sweet potatoes.

[0057] Embodiment 2: A three-dimensional sweet potato planting method, comprising the three-dimensional sweet potato planting device as described above, and further comprising the following steps:

[0058] S1. Choose the right soil;

[0059] S2. Put the soil into the planting bag 1, making sure that the soil is evenly filled;

[0060] S3. Four sweet potato seedlings are planted in the upper and lower layers of the planting bag 1, maintaining appropriate spacing between plants and rows;

[0061] S4. Place the planting bags 1 evenly on the ground with a distance of 40 cm between the bags to ensure that the sweet potato vines have enough space to climb;

[0062] S5. Adjusting the light intensity and spectrum through the photosynthesis enhancement device 3 to adapt to different stages of sweet potato growth, and using the photosynthesis efficiency evaluation formula to quantitatively evaluate the photosynthesis efficiency;

[0063] S6. The sweet potato plants are irrigated, fertilized and pesticided through the drip irrigation system to achieve the integrated application of water, fertilizer and pesticide, and the final evaluation is carried out using the comprehensive evaluation formula for sweet potato yield and quality.

[0064] Specifically, the soil is fertile and loose sandy soil as the cultivation medium.

[0065] As can be seen from the above, in this embodiment, first, fertile and loose sandy soil is selected as the cultivation matrix, and the soil is filled into the planting bags to ensure uniform filling. Then, 4 sweet potato seedlings are cut into the upper and lower layers inside the planting bags, maintaining reasonable plant spacing and row spacing, and then the planting bags are evenly placed to provide sufficient climbing space for the sweet potato vines. During the planting process, the photosynthesis enhancement device is used to adjust the light intensity and spectrum to adapt to the different stages of sweet potato growth, and the photosynthesis efficiency is quantitatively evaluated through the photosynthesis efficiency evaluation formula. At the same time, the drip irrigation system is used to realize the integrated irrigation of water, fertilizer and medicine to improve the efficiency of resource utilization. Finally, the sweet potato yield and quality comprehensive evaluation formula is used to quantitatively evaluate the final sweet potato yield and quality. This planting method not only improves the yield and quality of sweet potatoes, but also optimizes resource utilization, and has significant economic and ecological benefits.

[0066] Embodiment 3: This embodiment is basically the same as the previous embodiment, except that the photosynthesis efficiency evaluation formula is as follows:

[0067]

[0068] in:

[0069] E photosynthesis is the photosynthesis efficiency ratio of sweet potato plants;

[0070] t0 and t1 are the time points at which the assessment starts and ends, respectively;

[0071] n and m are the number of wavelengths considered in LED grow lights and sunlight, respectively;

[0072] λ i (t) and λ′ j (t) are the wavelengths of LED light and sunlight considered at time t, respectively;

[0073] I LED (t,λ i ) and I sun (t,λ′ j ) are respectively the LED light and sunlight at time t and wavelength λ i and λ′ j The light intensity under

[0074] α i,potato (λ i ) and α j,potato (λ′ j ) are the wavelengths of sweet potato plants at i and λ′ j Photosynthesis absorption rate under ;

[0075] β watering and β fertilizationare irrigation and fertilization efficiency factors, respectively;

[0076] E photosynthesis The value range is [0, +∞), where 1 means that the photosynthesis efficiency of the light simulated by the LED light is the same as that under natural light, greater than 1 means that the LED light improves the photosynthesis efficiency, and less than 1 means that it decreases;

[0077] The application process of the above formula is as follows:

[0078] 1. Data collection and preprocessing

[0079] Time range determination: First determine the time range for evaluation, that is, t0 and t1 in the formula. This is usually determined based on the growth cycle and key growth period of sweet potatoes.

[0080] Wavelength selection and measurement: Select the wavelength ranges to be considered in LED plant growth lights and sunlight, and measure the light intensity at these wavelengths. This can be measured by equipment such as a spectrometer.

[0081] Determination of photosynthesis absorption rate: Obtain the photosynthesis absorption rate of sweet potato plants at different wavelengths through laboratory measurement or reference to relevant literature.

[0082] 2. Calculation of irrigation and fertilization efficiency factors

[0083] Irrigation efficiency factor β watering :According to the precise control degree of the drip irrigation system, a normalization function is used to map the control accuracy to the [0,1] interval. For example, if the drip irrigation system can accurately control the irrigation amount, then β watering Close to 1; otherwise, close to 0.

[0084] Fertilization efficiency factor β fertilization :The normalized function is also used to calculate according to the precise control degree of fertilization in the drip irrigation system.

[0085] 3. Formula calculation

[0086] Integral calculation: According to the formula, the light intensity of LED plant growth lamps and sunlight at different times and wavelengths is integrated and calculated. Use numerical integration methods such as the trapezoidal method or the Simpson method.

[0087] Calculation of photosynthesis efficiency ratio: Compare the integral results under LED plant growth lights with those under sunlight to obtain the photosynthesis efficiency ratio E of the sweet potato plants. photosynthesis .

[0088] 4. Results Analysis and Application

[0089] Result analysis: Based on the calculated photosynthesis efficiency ratio, the changes in photosynthesis efficiency of sweet potato plants at different growth stages were analyzed. This helps to understand the growth status and resource utilization efficiency of sweet potato plants.

[0090] Planting management optimization: According to the analysis results, adjust the light intensity and spectrum of LED plant growth lamps, optimize irrigation and fertilization strategies to improve the photosynthesis efficiency and resource utilization efficiency of sweet potato plants.

[0091] Yield and quality prediction: Combined with the comprehensive evaluation formula for sweet potato yield and quality, the yield and quality of sweet potatoes are predicted to provide guidance for subsequent planting management.

[0092] Specifically, the comprehensive evaluation formula for sweet potato yield and quality is as follows:

[0093]

[0094] in:

[0095] Y potato It is the comprehensive score of yield and quality per unit area of ​​sweet potato;

[0096] A is the planting area of ​​the sweet potato three-dimensional planting equipment;

[0097] P(x,y) is the yield density of sweet potato at position (x,y);

[0098] Q(x,y) is the quality score of the sweet potato at position (x,y);

[0099] Y is the enhancement coefficient of photosynthesis efficiency on yield and quality;

[0100] δ climbing It is the improvement factor of sweet potato vine climbing frame on yield and quality;

[0101] ∫∫ A dA represents the double integral of the planting area A, which is used to calculate the total area;

[0102] Y potato The value range of is [0, +∞), where a higher value indicates a higher comprehensive score of sweet potato yield per unit area and quality;

[0103] The application process of the above formula is as follows:

[0104] 1. Data collection and preprocessing

[0105] Yield density and quality score measurement: At different positions (x, y) of the sweet potato three-dimensional planting equipment, the yield density P(x, y) and quality score Q(x, y) of the sweet potato are measured respectively. The yield density can be obtained by weighing and area calculation, and the quality score can be comprehensively evaluated by indicators such as appearance, taste, and nutritional content.

[0106] Calculation of photosynthesis efficiency and climbing frame improvement factor: According to the previous photosynthesis efficiency evaluation formula, the photosynthesis efficiency E of the sweet potato plant is calculated. photosynthesis At the same time, according to the design and use of the climbing frame, the improvement factor δ of the sweet potato vine climbing frame on yield and quality was calculated through the normalized function climbing .

[0107] 2. Formula calculation

[0108] Double integral calculation: Divide the planting area A into several small areas, and perform double integral calculation on each small area, that is, perform weighted summation of the yield density P(x, y) and quality score Q(x, y) in each small area, and multiply it by the enhancement coefficient γ of photosynthesis efficiency on yield and quality and the improvement factor δ of sweet potato vine climbing frame on yield and quality climbing Then add up the calculation results of all small areas to get the comprehensive score Y of sweet potato yield and quality per unit area potato .

[0109] 3. Results analysis and application

[0110] Result analysis: According to the calculated Y potato The yield and quality distribution of sweet potato three-dimensional planting equipment in different locations and under different conditions are analyzed. The areas and conditions with higher yield and quality, as well as the areas and conditions with lower yield and quality are found to provide a basis for subsequent optimization management.

[0111] Optimized management: Based on the analysis results, the three-dimensional sweet potato planting equipment is optimized. For areas and conditions with higher yields and quality, the corresponding management measures can be maintained or strengthened; for areas and conditions with lower yields and quality, targeted improvement measures need to be taken, such as adjusting light intensity, irrigation amount, fertilizer amount, etc., to improve the yield and quality of sweet potatoes.

[0112] Specifically, after the planting bag 1 is placed, a frame is built for the sweet potato vines to climb, so as to improve the yield and quality of the sweet potatoes.

[0113] Specifically, irrigation, fertilization and pesticide application are all precisely controlled through the drip irrigation system to reduce the amount of water, fertilizer and pesticide used and improve resource utilization efficiency.

[0114] Specifically, the photosynthesis enhancing device 3 includes an LED plant growth lamp, which can simulate the spectrum of natural light and adjust the light intensity and spectrum according to different stages of sweet potato growth to enhance the photosynthesis efficiency of the sweet potato plants.

[0115] From the above, it can be seen that in this embodiment, by collecting and preprocessing data, calculating irrigation and fertilization efficiency factors, performing formula integration calculations and other steps, the photosynthesis efficiency of sweet potato plants and the comprehensive score of yield per unit area and quality can be quantitatively evaluated. In addition, this method also emphasizes the importance of building racks for sweet potato vines to climb, and accurately controls irrigation, fertilization and pesticide application through a drip irrigation system to improve resource utilization efficiency. The photosynthesis enhancement device further enhances the photosynthesis efficiency of sweet potato plants by simulating the natural light spectrum and adjusting the light intensity.

[0116] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0117] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0118] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0119] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0120] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0121] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0122] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-dimensional sweet potato planting device, characterized in that: include: A planting bag (1), the planting bag (1) having a depth of 60 cm, a length and a width of 40 cm each, and being used to contain soil and sweet potato plants; the internal space of the planting bag (1) is divided into two layers, each layer being capable of grafting four sweet potato seedlings, thereby achieving three-dimensional planting; a drainage hole is provided at the bottom of the planting bag (1) for drainage to prevent water accumulation at the roots of the sweet potatoes; A drip irrigation device (2), comprising a drip irrigation tape, wherein the drip irrigation tape is connected to the upper middle position of each planting bag (1) and is used for irrigation, fertilization and pesticide application; The photosynthesis enhancing device (3) is installed around the three-dimensional sweet potato planting equipment to simulate the spectrum of natural light and adjust the light intensity and spectrum according to different stages of sweet potato growth to enhance the photosynthesis efficiency of the sweet potato plants.

2. A three-dimensional sweet potato planting device as claimed in claim 1, characterized in that: The planting bag (1) is made of non-woven fabric and has good air permeability and water retention.

3. A three-dimensional sweet potato planting method, characterized in that: The three-dimensional sweet potato planting device according to any one of claims 1 and 2 further comprises the following steps: S1. Choose the right soil; S2. Put the soil into the planting bag (1), making sure that the soil is filled evenly; S3. Four sweet potato seedlings are planted in each of the upper and lower layers of the planting bag (1), maintaining appropriate plant and row spacing; S4. Place the planting bags (1) evenly on the ground with a distance of 40 cm between bags to ensure that the sweet potato vines have enough space to climb; S5. adjusting the light intensity and spectrum through the photosynthesis enhancement device (3) to adapt to different stages of sweet potato growth, and quantitatively evaluating the photosynthesis efficiency using a photosynthesis efficiency evaluation formula; S6. The sweet potato plants are irrigated, fertilized and pesticided through the drip irrigation system to achieve the integrated application of water, fertilizer and pesticide, and the final evaluation is carried out using the comprehensive evaluation formula for sweet potato yield and quality.

4. A three-dimensional sweet potato planting method as claimed in claim 3, characterized in that: The soil is fertile and loose sandy soil as a cultivation medium.

5. A three-dimensional sweet potato planting method as claimed in claim 4, characterized in that: The photosynthesis efficiency evaluation formula is as follows: in: E photosynthesis is the photosynthesis efficiency ratio of sweet potato plants; t0 and t1 are the time points at which the assessment starts and ends, respectively; n and m are the number of wavelengths considered in LED grow lights and sunlight, respectively; λ i (t) and λ′ j (t) are the wavelengths of LED light and sunlight considered at time t, respectively; I LED (t,λ i ) and I sun (t,λ′ j ) are respectively the LED light and sunlight at time t and wavelength λ i and λ′ j The light intensity under α i,potato (λ i ) and α j,potato (λ′ j ) are the wavelengths of sweet potato plants at i and λ′ j Photosynthesis absorption rate under ; β watering and β fertilization are irrigation and fertilization efficiency factors, respectively; E photosynthesis The value range of is [0, +∞), where 1 means that the photosynthesis efficiency of the light simulated by the LED light is the same as that under natural light, greater than 1 means that the LED light improves the photosynthesis efficiency, and less than 1 means that it decreases.

6. A three-dimensional sweet potato planting method as claimed in claim 5, characterized in that: The comprehensive evaluation formula for sweet potato yield and quality is as follows: in: Y potato It is the comprehensive score of yield and quality per unit area of ​​sweet potato; A is the planting area of ​​the sweet potato three-dimensional planting equipment; P(x,y) is the yield density of sweet potato at position (x,y); Q(x,y) is the quality score of the sweet potato at position (x,y); Y is the enhancement coefficient of photosynthesis efficiency on yield and quality; δ climbing It is the improvement factor of sweet potato vine climbing frame on yield and quality; represents the double integral of the planting area A, which is used to calculate the total area; Y potato The value range of is [0, +∞), where a higher value indicates a higher comprehensive score of sweet potato yield per unit area and quality.

7. A three-dimensional sweet potato planting method as claimed in claim 3, characterized in that: The method also includes building a frame for the sweet potato vines to climb after the planting bags (1) are placed, so as to improve the yield and quality of the sweet potatoes.

8. A three-dimensional sweet potato planting method as claimed in claim 3, characterized in that: The irrigation, fertilization and pesticide application are all precisely controlled through a drip irrigation system to reduce the amount of water, fertilizer and pesticide used and improve resource utilization efficiency.

9. A three-dimensional sweet potato planting method as claimed in claim 3, characterized in that: The photosynthesis enhancing device (3) comprises an LED plant growth lamp, which can simulate the spectrum of natural light and adjust the light intensity and spectrum according to different stages of sweet potato growth to enhance the photosynthesis efficiency of the sweet potato plants.

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