A system and method for providing nutrient solution for dense planting of tomatoes

Abstract

The present invention relates to a system and method for providing nutrient solution for dense planting of tomatoes. The system comprises: a dense planting mechanism for providing a cultivation environment for tomatoes; a liquid supply mechanism for providing nutrient solution to tomatoes cultivated in the dense planting mechanism; and a control module for controlling the liquid supply mechanism to deliver nutrient solution. The tomatoes cultivated at adjacent positions of the dense planting mechanism are in different planting batches. The system also comprises a collection module for obtaining information reflecting the growth stage of tomatoes, wherein the control module adjusts the proportion of nutrient components of the nutrient solution provided by the liquid supply mechanism to tomatoes based on the information of the growth stage of tomatoes obtained by the collection module. The present invention can solve the problem of tomatoes in adjacent planting troughs being blocked from each other and affecting their growth due to being too close to each other on the basis of effectively improving the utilization rate of planting space, and at the same time provide tomatoes with nutrient solution with the most suitable proportion according to their growth stage, effectively improving the yield of crops.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural production, and in particular to a tomato dense planting system and method, and in particular to a tomato dense planting nutrient solution providing system and method. Background Art

[0002] Tomato is one of the main vegetable crops cultivated in various parts of my country and occupies an important position in my country's bulk vegetable industry. With the development of agricultural production technology, the increase in total tomato production has shifted from simply increasing the sown area to focusing on the two-way increase of sown area and yield. The dense planting of greenhouse tomatoes can make up for the lack of single-plant yield by increasing the number of cultivated plants, shorten the production cycle of tomatoes, and enable tomatoes to be put on the market earlier and in large quantities.

[0003] However, the existing dense planting of tomatoes only increases the number of layers of three-dimensional planting of tomatoes in the vertical direction. For example, the invention with publication number CN111034607A provides a three-dimensional dense planting device and a tomato dwarfing cultivation method, the device includes a cultivation base and an aerosol device, and the outer side of the cultivation base is provided with multiple layers of planting areas from top to bottom. The planting areas arranged from top to bottom in the invention can make full use of the cultivation space, increase the number of plantings in the same cultivation space area, and achieve the effect of three-dimensional dense planting. However, the three-dimensional dense planting equipment provided by the prior art usually leaves sufficient spacing distance in the horizontal direction to avoid the problem of mutual squeezing and blocking of leaves between tomatoes. Therefore, the three-dimensional dense planting of the prior art still causes a waste of planting space to a certain extent, and the density of tomato dense planting needs to be further improved.

[0004] In addition, tomatoes have a relatively large demand for nutrients throughout the entire growth period. The prior art usually uses a method of conveying nutrient solution or atomizing the nutrient solution to automatically convey nutrients to densely planted tomatoes. However, the proportion of nutrient requirements for tomatoes at different growth stages is not exactly the same. Nitrogen nutrition is the main nutrient in the seedling stage of tomatoes. When the first bunch of fruits begins to bear fruit, the absorption of nitrogen, phosphorus and potassium increases rapidly, with nitrogen accounting for 50% of the three elements, potassium accounting for 32%, and phosphorus accounting for 18%. In the peak fruiting period of tomatoes, nitrogen accounts for 36%, potassium accounts for 50%, and phosphorus accounts for 14%. The early stage of tomato growth focuses on the application of nitrogen fertilizer, and the later stage focuses on the application of potassium fertilizer. The demand for phosphorus fertilizer is always carried out during the growth period. The methods of automatically conveying nutrient solution or atomizing nutrient solution involved in the prior art cannot well adapt to the nutrient requirements of tomatoes at different growth stages, which may lead to a decrease in tomato yield.

[0005] In addition, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making the present invention, but due to space limitations, not all details and contents are listed in detail. However, this does not mean that the present invention does not have the characteristics of these prior arts. On the contrary, the present invention already has all the characteristics of the prior art, and the applicant reserves the right to add relevant prior art to the background technology. Summary of the invention

[0006] In agricultural planting technology, in order to increase crop yields, three-dimensional close planting equipment is usually used for crop cultivation. For tomato cultivation, the three-dimensional close planting equipment currently provided usually leaves sufficient spacing in the lateral direction to avoid the problem of mutual squeezing and blocking of leaves between tomatoes. However, this three-dimensional close planting method still causes a waste of planting space to a certain extent, and the close planting degree of tomato close planting needs to be further improved. In addition, the growth and development process of tomatoes requires different amounts of nutrients, such as trace elements such as nitrogen, phosphorus, potassium, calcium and sodium. Various elements and application amounts have a great impact on their yield. For example, excessive or improper application of nitrogen fertilizer can easily cause plant leggy growth and flower drop. If there is too much nitrogen fertilizer during the growth period of tomatoes, it will not only cause plant leggy growth and flower drop, but also affect the absorption of calcium by the root system of the plant. When tomatoes lack phosphorus, their growth will be inhibited, the fruit will mature late, and the yield will be reduced. The prior art usually dissolves inorganic salts and organic nutrients in water according to a pre-set ratio and supplies them to tomatoes, but tomatoes have significant differences in the proportion of nutrient requirements at different growth and development stages. Therefore, how to utilize dense planting equipment and effectively provide a suitable ratio of nutrients for tomato growth to optimize tomato yield is a problem that cannot be solved at present.

[0007] In view of the shortcomings of the prior art, the present invention provides a tomato dense planting nutrient solution providing system, which comprises:

[0008] A close planting mechanism for providing a cultivation environment for tomatoes;

[0009] a liquid supply mechanism for supplying nutrient solution to tomatoes grown in the dense planting mechanism; and

[0010] A control module that controls the liquid supply mechanism to deliver nutrient solution.

[0011] The tomatoes grown in adjacent positions of the dense planting mechanism are in different planting batches.

[0012] The system also includes a collection module for acquiring information reflecting the growth stage of tomatoes, wherein the control module adjusts the proportion of nutrient components in the nutrient solution provided by the liquid supply mechanism to the tomatoes based on the information about the growth stage of tomatoes acquired by the collection module.

[0013] The beneficial effects of the technical solution are as follows: First, compared with the close planting equipment of the prior art, the tomato close planting nutrient solution providing system of the present invention reduces the horizontal planting spacing by cultivating tomatoes of different planting batches at adjacent positions of the close planting mechanism, thereby achieving the purpose of increasing the number of tomatoes planted in the same size of planting space. The traditional three-dimensional close planting equipment only considers the utilization efficiency of the planting space in the vertical direction, such as increasing the number of planting troughs in the same vertical direction to increase the number of planted plants. However, as the plants grow, their plant height increases, the number of side branches increases, and the number and area of ​​leaves increase, which will form obstructions between adjacent plants and affect the photosynthesis of tomatoes, thereby reducing crop yields. In the present invention, in the vertical and horizontal directions, any adjacent planting troughs in the close planting mechanism are tomatoes from different planting batches, such as sowing the first batch of tomatoes in the first planting trough, and the second batch of tomatoes are planted in the planting troughs on the left, right, top and bottom of the first planting trough. The advantage of this arrangement is that, because the planting time of tomatoes in different planting batches is different, tomatoes in different planting batches are in different growth stages at the same time point during the cultivation process, and the overall size of tomatoes in different growth stages is different, that is, the size of the space occupied by tomatoes in different growth stages is different. For example, the tomatoes in the first planting batch are in the fruit-setting period and the tomatoes in the second planting batch are in the seedling stage. Although the space occupied by the plants in the fruit-setting period increases, the space required by the plants in the seedling stage is small, so the two will not block each other. In terms of lateral planting distance, the close planting mechanism of the present application can add at least one planting point between the horizontal distances of the two planting points of the close planting scheme of the prior art; in terms of vertical planting, the close planting mechanism provided by the present application can extend vertically, which significantly improves the utilization efficiency of the planting space. Therefore, the invention can solve the problem of tomatoes in adjacent planting troughs affecting growth due to mutual blocking caused by too close spacing on the basis of effectively improving the utilization rate of the planting space.

[0014] On the other hand, for tomato crops that require a relatively large amount of fertilizer throughout the entire period, the main demand ratios for nutrients at different growth stages are not the same. Therefore, the present invention adjusts the ratio of nutrients in the nutrient solution delivered to the planting trough according to the crop growth stage information obtained by the acquisition module, so that all cultivated crops obtain the appropriate nutrient ratio at different growth stages, ensuring the effective absorption of nutrients and avoiding problems such as stunted development and diseases of tomatoes due to excessive or insufficient nutrients. Therefore, the present invention can not only efficiently utilize the planting space, but also significantly increase the total yield and economic benefits of crops.

[0015] Preferably, the close planting mechanism includes a plurality of planting frames and planting troughs arranged on the planting frames. Preferably, the planting troughs are containers for planting tomatoes. Preferably, the tomatoes in the planting troughs at adjacent positions of the plurality of planting frames belong to different planting batches. Preferably, the plurality of planting frames of the close planting mechanism are independent of each other, so as to facilitate adjustment of the spacing distance between the planting frames. The advantage of this arrangement is that the positions of the plurality of independent planting frames in the cultivation space can be adjusted by the control module. When adjacent crops block or interfere with each other, the control module controls to increase the spacing between the planting frames; when the spacing between adjacent crops is too large, the control module controls to reduce the spacing between the planting frames, so as to improve the utilization efficiency of the cultivation space.

[0016] Preferably, the control module obtains images of different growth stages of crops from different planting batches, determines whether they overlap, and analyzes the overall data to obtain the optimal spacing distance of the planting stands, ensuring that adjacent crops do not block or affect each other while fully utilizing the cultivation space.

[0017] The advantage of this setting is that the control module analyzes whether the spacing between the current planting racks is appropriate based on the image information of the crops at different growth stages, and then outputs a more appropriate spacing plan for the planting racks. The spacing of the planting racks here can be understood as the distance between the planting points. The spacing of the same planting rack is not necessarily suitable for other crops, and there are differences in plant height, crown width, etc. of different varieties of the same crop. For example, the plant height of different tomato varieties can range from 90 to 150 cm, and the crown width can range from 20 to 45 cm. Therefore, when cultivating a certain variety of crops, the control module can adjust the spacing of the planting racks to the optimal spacing for the first time (reducing the planting spacing to the minimum distance on the basis of ensuring that there is no mutual occlusion between the crops) and store the optimal spacing of this specific variety, and control the planting racks to be set at the optimal spacing when the same variety of crops is cultivated again in the future. Similarly, when the cultivated variety changes, the control module obtains image information of the crop at different growth stages to analyze whether the current spacing is appropriate. If not, the spacing of the planting racks is adjusted to the optimal one, and the optimal spacing is stored for direct application in the cultivation of the crop of that variety later.

[0018] Preferably, the planting trough can move vertically relative to the planting stand, thereby changing the liquid level of the nutrient solution in the planting trough.

[0019] Beneficial effects of the technical solution: The root system of a plant is the root of its growth. As a necessary organ for absorbing water and nutrients, it plays an important role in fixing plants and synthesizing plant growth regulators. Only when the root system is well developed can it better absorb water and nutrients, thereby promoting better development of the plant. The environment in which the roots of plants are located has a significant impact on root development. The present invention stimulates the roots of plants by controlling the change in the liquid level in the planting trough (experiencing high water level, medium water level and low water level for a period of time). This setting is conducive to the growth of the root system, enhances the vitality of the root system, and thus enhances the nutrient absorption capacity of the plant. In addition, the oxygen content in the root environment can be adjusted by the change in the liquid level of the root environment. When the roots of the plant experience a low liquid level, the oxygen content in the root environment increases, making up for the defect of insufficient oxygen in the root environment at a high liquid level. Therefore, plants can establish a well-developed root system and effectively absorb nutrients, thereby achieving the purpose of high yield and high quality.

[0020] Preferably, based on the information of the growth stage of tomatoes acquired by the acquisition module, the control module controls the proportion of the nutrient components of the nutrient solution delivered to the planting tank by the liquid supply mechanism.

[0021] Preferably, the liquid supply mechanism uses a liquid supply hose to transport the nutrient solution to the planting trough.

[0022] Preferably, the acquisition module obtains the growth stage information of tomatoes by image recognition.

[0023] Preferably, the liquid supply mechanism includes at least a first liquid pool for storing nitrogen-containing nutrients, a second liquid pool for storing phosphorus-containing nutrients, a third liquid pool for storing potassium-containing nutrients, and a fourth liquid pool for storing clean water, wherein the control module controls the proportion of nutrients supplied to the nutrient solution in the planting tank by controlling the content of nutrients output from different liquid pools. The advantage of this setting is that different nutrients are stored separately, which is conducive to the subsequent control module to obtain different proportions of nutrients according to the growth stage of the plant. Although the prior art can also supply plants with different proportions of nutrients, its usual implementation method is to directly configure the working solution of corresponding concentration according to the content of each nutrient required by the plant. Its disadvantage is that as the growth stage of the plant changes, different proportions of nutrient solution need to be reconfigured each time, the operation steps are cumbersome, and waste is caused. This is because the nutrient solution of one growth stage is not suitable for plants in another growth stage. Therefore, when the nutrient solution of one growth stage is not used up, it may be directly disposed of. However, the technical solution places different nutrients in different liquid pools, and outputs corresponding amounts of nutrients according to the proportion of nutrients required by the growth stage of the plant.

[0024] Preferably, adjacent positions of the close planting mechanism cultivate at least two planting batches of tomatoes, wherein the growth time interval between different planting batches of tomatoes is 2 to 15 weeks.

[0025] Preferably, two planting batches of tomatoes are cultivated at adjacent positions of the close planting mechanism, the growth time interval between the first planting batch of tomatoes and the second planting batch of tomatoes is 2 to 6 weeks, the liquid level in the planting trough where the first planting batch of tomatoes is located is a first liquid level, and the liquid level in the planting trough where the second planting batch of tomatoes is located is a third liquid level, wherein the first liquid level is lower than the third liquid level.

[0026] The advantage of this arrangement is that the growth interval of tomatoes is 2 to 6 weeks, corresponding to the spacing of tomatoes in the seedling stage and tomatoes in the flowering and fruiting stage. For each layer of planting lines, the crown width of tomatoes in the seedling stage is small (about 10 to 30 cm), and the crown width of tomatoes in the flowering and fruiting stage is increased (about 30 to 60 cm). The spacing planting can avoid mutual squeezing and blocking between plants, ensure that tomatoes can photosynthesize normally, and maximize photosynthetic efficiency. For the first and second layers of planting lines, the spacing of tomatoes in the seedling stage and tomatoes in the flowering and fruiting stage leaves sufficient gaps for the tomatoes in the lower layer. The planting troughs of different batches of tomatoes are at different heights, so that the gaps between adjacent plants are increased, so that the external light source can reach the internal space of the lower planting line and the dense planting mechanism, ensuring that the tomatoes on each planting line can receive sufficient and balanced light sources for photosynthesis. In traditional three-dimensional cultivation technology, when the same batch of tomatoes are planted on the cultivation rack, when the crown width of the plants increases, the adjacent plants begin to squeeze each other, and the blocked or overlapping leaves cannot receive light, which reduces the photosynthetic efficiency of the plants. In addition, because the tomato plants on the upper layer block each other's light and there are fewer gaps between the plants, the external light source cannot reach the tomato plants on the lower layer in sufficient quantity. Therefore, the photosynthesis of the tomatoes on the lower layer is significantly affected, resulting in a decrease in yield.

[0027] Preferably, two planting batches of tomatoes are cultivated at adjacent positions of the close planting mechanism, the growth time interval between the first planting batch of tomatoes and the third planting batch of tomatoes is 7 to 15 weeks, the liquid level in the planting trough where the first planting batch of tomatoes is located is a first liquid level, and the liquid level in the planting trough where the third planting batch of tomatoes is located is a second liquid level, wherein the first liquid level is lower than the second liquid level.

[0028] The advantages of this setting are: on the one hand, it avoids the mutual squeezing of adjacent plants and the shielding of the lower planting line by the upper planting line, ensuring that the plants have sufficient space for growth and normal photosynthesis. On the other hand, the requirements for the proportion of nutrient solution in the seedling stage and the fruit ripening stage are different. The nutrient solution of tomatoes in the seedling stage contains nitrogen nutrients: phosphorus nutrients: potassium nutrients = 2-2.2: 0.8-0.9: 3-4, and the nutrient solution of tomatoes in the fruit ripening stage contains nitrogen nutrients: phosphorus nutrients: potassium nutrients = 4-5.5: 2-2.5: 11-12.5. In this scheme, when cultivating tomatoes in the seedling stage and tomatoes in the fruit maturity stage, the method of different requirements of plants for nutrients in different periods is adopted, which avoids the use of a large amount of the same or several nutrients in one period in the traditional planting process. For example, in the traditional planting process, when the plant enters the flowering and fruiting period, potassium fertilizer needs to be increased. For large-scale planting, the demand for potassium fertilizer increases suddenly, or when the plant enters the fruit maturity period, the demand for phosphorus fertilizer increases suddenly. This scheme can avoid the situation where the demand for specific nutrients increases suddenly in the same period, so as to reduce the demand pressure for specific nutrients. In addition, the nutrient area of ​​tomatoes in the seedling stage is small and the fertilizer requirement is small. When pumping nutrient solution from different liquid pools to the mixing pool, the pumping power of the pump assembly is small; the nutrient area of ​​tomatoes in the fruit maturity period is large and the fertilizer requirement is large. When pumping nutrient solution from different liquid pools to the mixing pool, the pumping power of the pump assembly is large. Therefore, this scheme can solve the problem of increased pumping power when the fertilizer requirement is large in the same period, and reduce the operating load of the system.

[0029] Preferably, three planting batches of tomatoes are cultivated at adjacent positions of the close planting mechanism, the growth time interval between the first planting batch of tomatoes and the second planting batch of tomatoes is 2 to 6 weeks, and the growth time interval between the second planting batch of tomatoes and the third planting batch of tomatoes is 5 to 9 weeks, wherein the tomatoes of different planting batches are arranged in the following manner in the horizontal direction: tomatoes of the first planting batch, tomatoes of the second planting batch, tomatoes of the first planting batch, tomatoes of the third planting batch,

[0030] The liquid level in the planting tank where the first planting batch of tomatoes is located is the first liquid level.

[0031] The liquid level in the planting tank for the second planting batch of tomatoes is the third liquid level.

[0032] The liquid level in the planting tank of the third planting batch of tomatoes is the second liquid level.

[0033] The first liquid level is lower than the second liquid level, and the second liquid level is lower than the third liquid level.

[0034] The advantages of this setting are: on the one hand, the growth period of the seedling stage is longer than that of the tomatoes in the flowering, fruiting and fruit ripening stages, so the number of tomatoes planted in the seedling stage is increased to supplement the number of tomatoes in the subsequent flowering, fruiting and ripening stages. On the other hand, the mutual transmission of pollen may lead to a decrease in variety purity and species. On each layer of planting lines, the spacing between plants in the flowering and fruiting stages is increased from one plant to three plants to reduce the probability of mutual transmission of pollen during the flowering process. In addition, tomatoes in different stages have different water demands, that is, the three batches of tomatoes have different requirements for the liquid level in the planting troughs. The planting troughs of tomatoes in the seedling stage are vertically upward on the planting racks, so that the liquid level in the planting troughs is a low liquid level (the first liquid level); the planting troughs of tomatoes in the flowering and fruiting stage are vertically downward on the planting racks so that the liquid level in the planting troughs is a high liquid level (the third liquid level), and the planting troughs of tomatoes in the fruit ripening stage are vertically downward on the planting racks so that the liquid level in the planting troughs is a medium liquid level (the second liquid level). Among them, the vertical downward distance of the planting troughs of tomatoes in the flowering and fruiting stage on the planting racks is greater than the vertical downward distance of the planting troughs of tomatoes in the fruit ripening stage on the planting racks. Therefore, the planting troughs of the three batches of tomatoes are all staggered in space to avoid mutual squeezing or blocking of the plants.

[0035] Preferably, the growth stages of tomatoes include at least the seedling stage (early growth stage), the flowering and fruiting stage, and the fruit ripening stage. In this embodiment, the seedling stage (early growth stage) refers to the period from planting to the first flower spike budding stage. The flowering and fruiting stage is from the flowering of the first flower spike to the early stage of the first flower spike fruit expansion. The fruiting stage is from the expansion of the first spike fruit to the harvesting of the entire tomato fruit.

[0036] Preferably, when it is detected that the tomato is in the seedling stage, the control module controls the nutrients in the nutrient solution in the liquid supply mechanism to be delivered to the planting tank at a first ratio; and at the same time controls the liquid level in the planting tank to be the first liquid level. The first ratio is preferably nitrogen nutrients: phosphorus nutrients: potassium nutrients==2-2.2:0.8-0.9:3-4.

[0037] Preferably, when it is detected that the tomatoes are in the flowering and fruiting stage, the control module controls the nutrients in the nutrient solution in the liquid supply mechanism to be delivered to the planting tank at a second ratio; and at the same time controls the liquid level in the planting tank to be a third liquid level. The second ratio is preferably nitrogen-containing nutrients: phosphorus-containing nutrients: potassium-containing nutrients==2-8:0.9-3.5:4-17.

[0038] Preferably, when it is detected that the tomato is in the fruit ripening stage, the control module controls the nutrient components of the nutrient solution in the liquid supply mechanism to be delivered to the planting tank at a third ratio; and at the same time controls the liquid level in the planting tank to be a second liquid level. The third ratio is preferably nitrogen-containing nutrients: phosphorus-containing nutrients: potassium-containing nutrients = 4-5.5: 2-2.5: 11-12.5.

[0039] Preferably, the first liquid level is lower than the second liquid level. Preferably, the second liquid level is lower than the third liquid level.

[0040] Beneficial effects of the technical solution: the change of the liquid level at the root can stimulate the growth of the root. The period of 1 to 2 weeks after the plant is planted is the survival period. The important purpose of the survival period is to promote the deep rooting. During this period, the water level can be kept low so that the surface of the planting substrate is relatively dry, and the root system will stretch to the place where there is water below, thereby promoting rooting or promoting the root system to grow downward. As the plant grows, the water level needs to be adjusted to a high water level after entering the flowering and fruiting period. The tomato consumes a lot of water during the fruiting period. Once the fruit expands, it cannot be short of water and needs sufficient water supply. At the same time, this period is the period of vigorous nutrient absorption of tomatoes. When the root system is sufficiently developed, the larger the contact surface between the root system and the nutrient solution, the more nutrients are absorbed. Therefore, it is necessary to set the liquid level in the planting trough to a high level. When in the fruit maturity period, the water demand of the tomato root system decreases, so the liquid level is adaptively reduced, but the water and nutrients absorbed by the roots need to ensure the consumption of the aboveground part. Therefore, the liquid level during the fruit maturity period can be a medium liquid level.

[0041] Preferably, the planting stand comprises at least two planting layers, wherein each planting layer is provided with at least one planting groove.

[0042] The present invention also provides a method for providing a nutrient solution for dense planting of tomatoes, comprising the following steps:

[0043] Plant tomatoes in different planting batches in adjacent locations of a close planting mechanism;

[0044] Capture images of tomatoes to get information about their growth stages;

[0045] Adjust the ratio of nutrients in the nutrient solution provided to the tomatoes and the liquid level in the planting trough. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a structural schematic diagram of a close planting mechanism of a preferred embodiment provided by the present invention;

[0047] Figure 2 It is a schematic diagram of the top view of the close planting mechanism of a preferred embodiment provided by the present invention;

[0048] Figure 3 It is a side view structural schematic diagram of a close planting mechanism according to a preferred embodiment of the present invention;

[0049] Figure 4 It is a schematic diagram of the connection structure between the liquid supply mechanism and the planting trough (high liquid level) according to a preferred embodiment of the present invention;

[0050] Figure 5It is a schematic diagram of the connection structure between the liquid supply mechanism and the planting trough (middle liquid level) according to a preferred embodiment of the present invention;

[0051] Figure 6 It is a schematic diagram of the connection structure between the liquid supply mechanism and the planting trough (low liquid level) according to a preferred embodiment of the present invention;

[0052] Figure 7 It is a simplified connection diagram of a tomato dense planting nutrient solution providing system according to a preferred embodiment of the present invention;

[0053] Figure 8 It is a schematic structural diagram of a planting stand and a slide rail assembly according to a preferred embodiment of the present invention.

[0054] Reference numerals list

[0055] 100: close planting mechanism; 200: liquid supply mechanism; 110: planting stand; 120: planting trough; 130: first trough group; 140: second trough group; 111: limiter; 121: planting matrix; 210: mixing tank; 211: first liquid tank; 212: second liquid tank; 213: third liquid tank; 214: fourth liquid tank; 215: first pump assembly; 216: second pump assembly; 217: third pump assembly; 218: fourth pump assembly; 219: concentration sensor; 220: control module; 230: first camera unit; 240: second camera unit; 250: liquid storage tank; 251: infusion tube; 252: liquid supply hose; 260: return line; 270: transport pump unit; 300: sliding rail; 400: mounting rail. DETAILED DESCRIPTION

[0056] The following is a detailed description with reference to the accompanying drawings.

[0057] Different growth stages of crops require different proportions of nutrients. Take nitrogen supply as an example. If there is too much nitrogen-containing fertilizer, the plant will absorb too much nutrients, which will easily lead to excessive plant growth. Excessive vegetative growth will cause the leaves to be large and thick, the stems to grow tall, and absorb more nutrients, while the nutrients absorbed by reproductive organs such as flowers and fruits will be greatly reduced. Insufficient reproductive growth will lead to the inability of flower buds to differentiate normally, affecting the normal growth of tomatoes and reducing yields.

[0058] The nitrogen absorbed by tomatoes in the seedling stage accounts for about 10% of the total nitrogen required, the nitrogen absorbed in the flowering and fruiting stage accounts for about 40% of the total nitrogen required, and the peak fruiting stage accounts for about 50% of the total nitrogen required. Nitrogen is the main nutrition in the seedling stage of tomatoes. When the first ear of fruit is formed, the absorption of nitrogen, phosphorus and potassium increases rapidly. Nitrogen accounts for 50% of the three elements, potassium accounts for 32%, and phosphorus accounts for 18%; nitrogen accounts for 36% and potassium accounts for 50% in the peak fruiting stage. The nutrients in the following embodiments mainly include the ratio of nitrogen, phosphorus, potassium and water. Other trace elements are not described, and the trace elements can be dissolved in water.

[0059] In this application, adjacent positions refer to the crop planting positions that are adjacent to each other in the horizontal and vertical directions. Different planting batches refer to different sowing or planting times of crops, such as the first batch of crops was sown on February 26, 2022, and the second batch of crops was sown on April 26, 2022. The first batch of crops and the second batch of crops are different planting batches. Information on the growth stage refers to information on a specific growth period of a crop in its entire life history, such as whether the crop is in the seedling stage, flowering stage, fruiting stage, etc.

[0060] Example 1

[0061] This embodiment provides a tomato dense planting nutrient solution providing system, such as Figure 7 As shown, it includes: a close planting mechanism 100 for providing a cultivation environment for tomatoes; a liquid supply mechanism 200 for providing nutrient solution to the tomatoes cultivated in the close planting mechanism 100; and a control module 220 for controlling the liquid supply mechanism 200 to deliver the nutrient solution, and the tomatoes cultivated at adjacent positions of the close planting mechanism 100 are in different planting batches. The system also includes a collection module for obtaining information reflecting the growth stage of tomatoes. The control module 220 adjusts the proportion of the nutrient components of the nutrient solution provided by the liquid supply mechanism 200 to the tomatoes based on the growth stage information of the tomatoes obtained by the collection module.

[0062] Preferably, the control module 220 is connected to the liquid supply mechanism 200 by signal so as to control the proportion of the nutrient components of the nutrient solution provided to the tomatoes by the liquid supply mechanism 200. Specifically, the control module 220 and the liquid supply mechanism 200 can be connected in a wireless manner. The control module 220 and the liquid supply mechanism 200 can be connected in a Bluetooth manner.

[0063] Preferably, the control module 220 can be configured as a central processing unit or a single chip microcomputer.

[0064] Preferably, the control module 220 is signal-connected to the acquisition module to receive the information of the growth stage of the tomato acquired by the acquisition module.

[0065] Preferably, the acquisition module can be a high-definition camera.

[0066] This embodiment takes tomato cultivation as an example.

[0067] Preferably, the method for obtaining the growth stage of tomatoes includes: obtaining an image of a target growth stage of tomatoes as a standard image; superimposing multiple images corresponding to the target growth stage, and selecting an overlapping area containing the growth stage characteristics of tomatoes; matching the real-time acquired tomato image with the standard image, and when the overlap of the characteristics of a specific growth stage meets the matching condition, determining that the growth stage of the tomatoes is the growth stage corresponding to the standard image. The acquisition module acquires the image of the tomatoes in the planting trough 120 and sends it to the control module 220. The control module 220 identifies the height, leaves, stems, flowers and fruits of the plants in the image, and can judge the information related to the growth status or growth stage of the plants.

[0068] The acquired image is used as an input to the trained growth stage recognition model to obtain the target growth stage recognized by the growth stage recognition model. Preferably, the growth stage recognition model is trained based on a convolutional neural network model.

[0069] Preferably, the close planting mechanism 100 includes a plurality of planting stands 110, such as Figures 1 to 3 As shown. Preferably, the planting stand 110 is provided with a planting trough 120. The planting trough 120 is a container for planting tomatoes. Preferably, the liquid supply mechanism 200 uses a liquid supply hose 252 to transport nutrient solution to the planting trough 120. Preferably, the tomatoes in the planting troughs 120 at adjacent positions of the planting stand 110 belong to different planting batches.

[0070] The planting grooves 120 are divided into at least a first groove group 130 for planting the first batch and a second groove group 140 for planting the second batch based on the tomato batches planted therein, wherein at least four planting grooves 120 are arranged on a single planting stand 110. Two adjacent planting grooves 120 in any direction belong to the first groove group 130 and the second groove group 140 respectively.

[0071] Preferably, the acquisition module includes a first camera unit 230 and a second camera unit 240. The first camera unit 230 acquires tomato plant images of the first slot group 130. The second camera unit 240 acquires tomato images of the second slot group 140. The control module 220 determines the growth stage of the first batch of tomatoes based at least on the plant images of tomatoes in the first slot group 130 acquired by the first camera unit 230, and the control module 220 determines the growth stage of the second batch of tomatoes based at least on the plant images of tomatoes in the second slot group 140 acquired by the second camera unit 240. The first camera unit 230 and the second camera unit 240 can be high-definition cameras, such as Minrray UV490 4K intelligent binocular tracking cameras. The first camera unit 230 and the second camera unit 240 are respectively connected to the control module 220 by signals, wherein the signal connection mode can be Bluetooth connection or WiFi connection.

[0072] According to a preferred embodiment, the liquid supply mechanism 200 at least includes a first liquid pool 211 storing nitrogen-containing nutrients, a second liquid pool 212 storing phosphorus-containing nutrients, a third liquid pool 213 storing potassium-containing nutrients, and a fourth liquid pool 214 storing clean water. Figure 4 As shown, the control module 220 controls the proportion of nutrients in the nutrient solution supplied to the planting trough 120 by controlling the content of nutrients output from different liquid pools.

[0073] Preferably, a concentration sensor 219 capable of measuring the concentration of each nutrient component in the nutrient solution is provided inside the mixing tank 210. The concentration sensor 219 can be, for example, a concentration detector of model DRC-600. Preferably, the concentration sensor 219 is connected to the control module 220 by signal, wherein the signal connection mode can be a Bluetooth connection or a WiFi connection.

[0074] Preferably, a first pump assembly 215 is disposed in the first liquid pool 211 , a second pump assembly 216 is disposed in the second liquid pool 212 , a third pump assembly 217 is disposed in the third liquid pool 213 , and a fourth pump assembly 218 is disposed in the fourth liquid pool 214 .

[0075] Preferably, the liquid supply mechanism 200 further includes a mixing tank 210 .

[0076] Preferably, the control module 220 adjusts the nutrient content of each liquid pool entering the mixing pool 210 by controlling the pumping power of the first pump assembly 215 in the first liquid pool 211, the second pump assembly 216 in the second liquid pool 212, the third pump assembly 217 in the third liquid pool 213, and the fourth pump assembly 218 in the fourth liquid pool 214, thereby controlling the proportion of nutrients in the mixing pool 210.

[0077] Preferably, the liquid supply mechanism 200 also includes an infusion tube 251 and a liquid storage tank 250 that are interconnected, wherein one end of the infusion tube 251 is connected to the interior of the planting trough 120, and the other end of the infusion tube 251 is connected to the liquid storage tank 250 through a liquid supply hose 252, and a transport pump group 270 and a return pipeline 260 are arranged between the liquid storage tank 250 and the mixing tank 210, wherein the connection ports of the transport pump group 270 and the return pipeline 260 with the liquid storage tank 250 are all located at the top of the liquid storage tank 250.

[0078] Preferably, the control module 220 is signal-connected with the first pump assembly 215 , the second pump assembly 216 , the third pump assembly 217 , the fourth pump assembly 218 , and the transport pump group 270 , respectively, to control the liquid delivery process of each pump assembly.

[0079] Preferably, the planting trough 120 can move vertically relative to the planting stand 110, thereby changing the liquid level of the nutrient solution in the planting trough 120. Specifically, a single planting stand 110 is divided into at least two planting layers by a plurality of stoppers 111, wherein each planting layer includes at least one planting trough 120 of the first trough group 130 and one planting trough 120 of the second trough group 140, and a certain interval is provided between the two planting layers, and the two planting troughs 120 in each planting layer can move linearly along the vertical direction of the planting stand 110. Preferably, the bottom of the liquid reservoir 250 is connected to the liquid supply hose 252, and the end of the liquid supply hose 252 opposite to the liquid reservoir 250 is connected to the liquid infusion tube 251, and the end of the liquid infusion tube 251 opposite to the liquid supply hose 252 is connected to the bottom of the planting trough 120. Preferably, the top of the planting trough 120 is connected to the outside air, and the top of the liquid reservoir 250 is connected to the outside air. Therefore, the planting tank 120, the liquid infusion tube 251, the liquid supply hose 252 and the liquid storage tank 250 form a communicating vessel structure.

[0080] For example, each planting stand 110 is provided with four planting troughs 120, which are divided into two layers, the tomato batches in the left and right planting troughs 120 of the upper and lower layers are different, and the tomato batches in the upper and lower planting troughs 120 are also different, that is, the two tomato batches on the diagonal are the same. The aforementioned planting stands 110 are arranged in a rectangular format, and during the arrangement process, it is also necessary to ensure that the tomato batches in any two adjacent planting troughs 120 are different. The specific arrangement results are as follows: Figure 1 shown.

[0081] Preferably, at least a planting matrix 121 for planting tomatoes is arranged in the planting trough 120, wherein the height of the planting matrix 121 immersed in the nutrient solution is adjusted by the vertical movement height of the planting trough 120 on the planting stand 110. Preferably, each planting trough 120 is provided with a liquid reservoir 250 beside the planting stand 110, wherein the liquid reservoir 250 configured in the first trough group 130 is connected to the first mixing tank, and the liquid reservoir 250 configured in the second trough group 140 is connected to the second mixing tank. Each planting trough 120 transports nutrient solution to the inside through a liquid infusion tube 251. Specifically, each liquid infusion tube 251 is also configured with a liquid reservoir 250 of corresponding height and using the communicating vessel principle for liquid level adjustment, that is, there are four liquid reservoirs 250 on each planting stand 110, and the height of the liquid reservoir 250 is fixed, but the height of the planting trough 120 is adjustable, such as by telescopic rods, gears, etc. When the height of the planting trough 120 changes, the liquid level therein changes accordingly, so that the required liquid level can be obtained.

[0082] Specifically, the liquid storage tanks 250 corresponding to the planting troughs 120 of different batches as described above are connected to at least two mixing tanks 210, because the planting batches are different, the growth stages of tomatoes are different. Different growth stages require different nutrient ratios, so two batches require at least two mixing tanks 210. Similarly, the more batches, the more mixing tanks 210 are needed. According to the above description, the liquid storage tanks 250 corresponding to the two planting troughs 120 on the diagonal line of a single planting stand 110 are connected to the same mixing tank 210, and the same applies to multiple planting stands 110.

[0083] Preferably, the planting stands 110 of the present embodiment are closely arranged in rows and columns, and a plurality of slide rail assemblies are provided at the bottom of the closely arranged rows or columns. Preferably, the vertical movement of the planting trough 120 is achieved by the slide rail assembly. Specifically, it is assumed that the planting stands 110 are arranged in a plurality of rows and columns in a first direction and a second direction perpendicular to each other, wherein a plurality of rows of planting stands 110 in the first direction are fixed on the mounting rails 400, the mounting rails 400 are installed along the first direction, and both ends of a plurality of parallel mounting rails 400 are arranged on the slide rails 300, and the slide rails 300 are distributed along the second direction, such as Figure 8 When it is necessary to plant and harvest the internal planting trough 120, the planting stand 110 on the same row of the planting stand 110 to be harvested on the mounting rail 400 is moved a certain distance away from the planting stand 110 it is attached to, so as to facilitate planting and harvesting. Figure 3 As shown, when planting and harvesting are needed, the first trough group 130 or the second trough group 140 (only one trough group) of the same batch on the planting stand 110 is moved to the middle position, that is, the upper planting trough 120 is moved down and the lower planting trough 120 is moved up to facilitate planting and harvesting.

[0084] Preferably, the control module 220 is connected to the slide rail assembly signal to control the height of the planting slot 120 relative to the planting stand 110.

[0085] Preferably, the growth stages of tomatoes in this embodiment include at least the seedling stage, the flowering and fruiting stage, and the fruit ripening stage.

[0086] According to a preferred embodiment, when it is detected that the tomato is in the seedling stage, the control module 220 controls the nutrient solution in the liquid supply mechanism 200 to be delivered to the planting tank 120 at a first ratio, and controls the liquid level in the planting tank 120 to be a first liquid level, such as Figure 6 As shown, the first ratio is preferably nitrogen-containing nutrients: phosphorus-containing nutrients: potassium-containing nutrients = 2-2.2: 0.8-0.9: 3-4.

[0087] Preferably, the ratio of the nutrients in the mixing tank 210 can be adjusted by the pumping power of the pump components in the first liquid tank 211 , the second liquid tank 212 , the third liquid tank 213 , and the fourth liquid tank 214 .

[0088] For example, the concentration of nitrogen-containing nutrients in the first liquid pool 211 is 100 mg / kg; the concentration of phosphorus-containing nutrients in the second liquid pool 212 is 100 mg / kg; and the concentration of potassium-containing nutrients in the third liquid pool 213 is 100 mg / kg. When fertilizing tomatoes in the seedling stage, the control module 220 controls the power of the first pump assembly 215 to be 1.75 KW. Specifically, the flow rate of nitrogen-containing nutrients pumped out from the first liquid pool 211 by the first pump assembly 215 is 105 L / min. The control module 220 controls the power of the second pump assembly 216 to be 0.58 KW. Specifically, the flow rate of phosphorus-containing nutrients pumped out from the second liquid pool 212 by the second pump assembly 216 is 35 L / min. The control module 220 controls the power of the third pump assembly 217 to be 2.9 KW. Specifically, the flow rate of potassium-containing nutrients pumped out from the third liquid pool 213 by the third pump assembly 217 is 175 L / min. The nutrient solution suitable for the growth of tomato seedlings is obtained in the mixing tank 210. According to the amount of water required by the tomatoes in this period, the control module 220 controls the power of the fourth pump assembly 218 to be 10-20KW.

[0089] According to a preferred embodiment, when it is detected that the tomatoes are in the flowering and fruiting period, the control module 220 controls the nutrients in the nutrient solution in the liquid supply mechanism 200 to be delivered to the planting tank 120 at a second ratio, and at the same time controls the liquid level in the planting tank 120 to be a third liquid level, such as Figure 4 As shown, the second ratio is preferably nitrogen-containing nutrients: phosphorus-containing nutrients: potassium-containing nutrients = 2-8: 0.9-3.5: 4-17, and the third liquid level is higher than the first liquid level.

[0090] When fertilizing tomatoes in the flowering and fruiting period, the control module 220 controls the power of the first pump assembly 215 to be 7KW. Specifically, the flow rate of nitrogen-containing nutrients pumped out from the first liquid pool 211 by the first pump assembly 215 is 420L / min. The control module 220 controls the power of the second pump assembly 216 to be 2.32KW. Specifically, the flow rate of phosphorus-containing nutrients pumped out from the second liquid pool 212 by the second pump assembly 216 is 140L / min. The control module 220 controls the power of the third pump assembly 217 to be 11.6KW. Specifically, the flow rate of potassium-containing nutrients pumped out from the third liquid pool 213 by the third pump assembly 217 is 700L / min. Nutrient solution suitable for the growth of tomatoes in the flowering and fruiting period is obtained in the mixing pool 210. According to the amount of water required by tomatoes during this period, the control module 220 controls the power of the fourth pump assembly 218 to be 40 to 60KW.

[0091] According to a preferred embodiment, when it is detected that the tomato is in the fruit ripening stage, the control module 220 controls the nutrient solution in the liquid supply mechanism 200 to be delivered to the planting tank 120 at a third ratio, and at the same time controls the liquid level in the planting tank 120 to be a second liquid level, such as Figure 5 As shown, the third ratio is preferably nitrogen-containing nutrients: phosphorus-containing nutrients: potassium-containing nutrients = 4-5.5: 2-2.5: 11-12.5, the second liquid level is higher than the first liquid level, and the second liquid level is lower than the third liquid level.

[0092] When fertilizing tomatoes in the fruit ripening period, the control module 220 controls the power of the first pump assembly 215 to be 4KW. Specifically, the flow rate of nitrogen-containing nutrients pumped out from the first liquid pool 211 by the first pump assembly 215 is 243L / min. The control module 220 controls the power of the second pump assembly 216 to be 1.74KW. Specifically, the flow rate of phosphorus-containing nutrients pumped out from the second liquid pool 212 by the second pump assembly 216 is 105L / min. The control module 220 controls the power of the third pump assembly 217 to be 6.38KW. Specifically, the flow rate of potassium-containing nutrients pumped out from the third liquid pool 213 by the third pump assembly 217 is 385L / min. Nutrient solution suitable for the growth of tomato fruits in the ripening period is obtained in the mixing pool 210. According to the amount of water required by tomatoes during this period, the control module 220 controls the power of the fourth pump assembly 218 to be 20 to 40KW.

[0093] Preferably, in this embodiment, the nitrogen-containing nutrient can be NH 4 HCO 3 NH 4 ) 2 SO 4 NH 4 Cl, (NH 2 ) 2 CO, water-soluble nitrogen fertilizers, etc.

[0094] Preferably, in this embodiment, the phosphorus-containing nutrient can be NH 4 H 2 PO 4 NH 4 H 2 PO 4 CaHPO 4 (NH 4 ) 2 SO 4 , water-soluble phosphate fertilizers, etc.

[0095] Preferably, in this embodiment, the potassium-containing nutrients can be KCl, K 2 SO 4 、KNO 3 , KH 2 PO 4 wait.

[0096] It should be understood that the nitrogen-containing nutrients, phosphorus-containing nutrients, and potassium-containing nutrients provided in this embodiment are only part of the nutrients required in the growth and development of tomatoes, and not all the required nutrients are listed. The nutrient solution supply system provided in this embodiment is suitable for the supply of various nutrients and is not limited to the supply of nitrogen, phosphorus, and potassium.

[0097] Example 2

[0098] This embodiment is a further improvement on Embodiment 1, and the repeated contents will not be repeated here.

[0099] According to a preferred embodiment, the close planting mechanism 100 is capable of planting at least two batches of tomatoes.

[0100] Preferably, two batches of tomatoes are cultivated at adjacent positions of the close planting mechanism 100. Preferably, the growth time interval of the two batches of tomatoes is 2 to 15 weeks. Specifically, the growth time interval of the two batches of tomatoes is 2 to 6 weeks. Specifically, the growth time interval of the two batches of tomatoes is 4 to 6 weeks. For example, the close planting mechanism 100 includes 36 groups of planting stands 110, and the planting stands 110 are arranged in the cultivation space in a 6×6 manner, and each group of planting stands 110 is provided with 4 planting troughs 120, and the planting troughs 120 are arranged as two layers of planting lines. That is, there are 144 planting troughs 120 in the entire cultivation space, each layer of planting line has 72 planting troughs 120, each horizontal row of each layer of planting line has 12 planting troughs 120, and each column has 6 planting troughs 120. For the convenience of description, coordinates are set for each planting groove, the first planting line is numbered as C1, the second planting line is numbered as C2, each horizontal row of planting grooves 120 is numbered as H1 to H12, and each column of planting grooves 120 is numbered as L1 to L6. For example, C1H1L1 means the planting groove 120 in the first horizontal row and the first column of the first planting line; C2H2L3 means the planting groove 120 in the second horizontal row and the third column of the second planting line.

[0101] Preferably, the growth time interval between the first batch of tomatoes and the second batch of tomatoes is 4 to 6 weeks. Preferably, the control module 220 controls the liquid level of the planting trough 120 where the first batch of tomatoes is located to be the first liquid level. Preferably, the control module 220 controls the liquid level of the planting trough 120 where the second batch of tomatoes is located to be the third liquid level. Preferably, the first liquid level is lower than the third liquid level. Specifically, the first batch of tomatoes can be tomatoes in the seedling stage; the second batch of tomatoes can be tomatoes in the flowering and fruiting stage. Specifically, tomatoes in the seedling stage are planted in the first trough group 130, and tomatoes in the flowering and fruiting stage are planted in the second trough group 140. The adjacent planting troughs 120 (including front and rear, left and right troughs, and upper and lower planting troughs 120) of the planting trough 120 where the tomatoes in the seedling stage are planted are tomatoes in the flowering and fruiting stage. The specific setting is: the planting troughs 120 of C1H1L1, C1H1L3, C1H1L5, C1H1L7, C1H1L9, and C1H1L11 are the first batch of tomatoes; the planting troughs 120 of C1H1L2, C1H1L4, C1H1L6, C1H1L8, C1H1L10, and C1H1L12 are the second batch of tomatoes. Correspondingly, the planting troughs 120 of C2H1L1, C2H1L3, C2H1L5, C2H1L7, C2H1L9, and C2H1L11 are the second batch of tomatoes; the planting troughs 120 of C2H1L2, C2H1L4, C2H1L6, C2H1L8, C2H1L10, and C2H1L12 are the first batch of tomatoes. Other planting troughs are planted according to similar rules, which will not be repeated here.

[0102] Preferably, the growth time interval between the first batch of tomatoes and the second batch of tomatoes can be 7 to 15 weeks. Preferably, the growth time interval between the first batch of tomatoes and the second batch of tomatoes can be 10 to 12 weeks. Preferably, the control module 220 controls the liquid level of the planting trough 120 where the first batch of tomatoes are located to be a first liquid level. Preferably, the control module 220 controls the liquid level of the planting trough 120 where the second batch of tomatoes are located to be a second liquid level. Preferably, the first liquid level is lower than the second liquid level. Specifically, the first batch of tomatoes can be tomatoes in the seedling stage; the second batch of tomatoes can be tomatoes in the fruit ripening stage. The specific setting is: the planting troughs 120 of C1H1L1, C1H1L3, C1H1L5, C1H1L7, C1H1L9, and C1H1L11 are the first batch of tomatoes; the planting troughs 120 of C1H1L2, C1H1L4, C1H1L6, C1H1L8, C1H1L10, and C1H1L12 are the third batch of tomatoes. Correspondingly, the planting troughs 120 of C2H1L1, C2H1L3, C2H1L5, C2H1L7, C2H1L9, and C2H1L11 are the third batch of tomatoes; the planting troughs 120 of C2H1L2, C2H1L4, C2H1L6, C2H1L8, C2H1L10, and C2H1L12 are the first batch of tomatoes. Other planting troughs are planted according to similar rules, which will not be repeated here.

[0103] Preferably, three batches of tomatoes are cultivated at adjacent positions of the close planting mechanism 100. Preferably, the growth time interval between the first batch of tomatoes and the second batch of tomatoes is 2 to 6 weeks. Preferably, the growth time interval between the second batch of tomatoes and the third batch of tomatoes is 5 to 9 weeks. Preferably, the growth time interval between the first batch of tomatoes and the third batch of tomatoes is 10 to 15 weeks. Preferably, the control module 220 controls the liquid level of the planting trough 120 where the first batch of tomatoes is located to be the first liquid level. Preferably, the control module 220 controls the liquid level of the planting trough 120 where the second batch of tomatoes is located to be the third liquid level. Preferably, the control module 220 controls the liquid level of the planting trough 120 where the third batch of tomatoes is located to be the second liquid level. Preferably, the first liquid level is lower than the second liquid level, and the second liquid level is lower than the third liquid level. Specifically, the first batch of tomatoes can be tomatoes in the seedling stage; the second batch of tomatoes can be tomatoes in the flowering and fruiting stage; and the third batch of tomatoes can be tomatoes in the fruit ripening stage. Specifically, the planting troughs 120 of C1H1L1, C1H1L3, C1H1L5, C1H1L7, C1H1L9, and C1H1L11 are for the first batch of tomatoes; the planting troughs 120 of C1H1L2, C1H1L6, and C1H1L10 are for the second batch of tomatoes. The planting troughs 120 of C1H1L4, C1H1L8, and C1H1L12 are for the third batch of tomatoes. Correspondingly, the planting troughs 120 of C2H1L2, C2H1L4, C2H1L6, C2H1L8, C2H1L10, and C2H1L12 are for the first batch of tomatoes; the planting troughs 120 of C2H1L1, C2H1L5, and C2H1L9 are for the second batch of tomatoes; and the planting troughs 120 of C1H1L3, C1H1L7, and C1H1L11 are for the third batch of tomatoes. Other planting troughs are planted according to similar rules, which will not be described here. Or another way is: the planting troughs 120 of C1H1L1, C1H1L3, C1H1L5, C1H1L7, C1H1L9, and C1H1L11 are the first batch of tomatoes; the planting troughs 120 of C1H1L2, C1H1L6, and C1H1L10 are the third batch of tomatoes. The planting troughs 120 of C1H1L4, C1H1L8, and C1H1L12 are the second batch of tomatoes. Correspondingly, the planting troughs 120 of C2H1L2, C2H1L4, C2H1L6, C2H1L8, C2H1L10, and C2H1L12 are for the first batch of tomatoes; the planting troughs 120 of C2H1L1, C2H1L5, and C2H1L9 are for the third batch of tomatoes; and the planting troughs 120 of C1H1L3, C1H1L7, and C1H1L11 are for the second batch of tomatoes.

[0104] Example 3

[0105] This embodiment is a further improvement of Embodiment 1 and Embodiment 2, and the repeated contents will not be repeated here.

[0106] Due to the different growth stages of tomatoes, tomatoes planted in different batches have different requirements for lighting conditions and nutritional conditions because they are in different growth stages. Therefore, the control module 220 can change the distance of the tomatoes planted in the planting trough 120 relative to the light source by adjusting the height of the planting trough 120, thereby ensuring that the tomatoes are under suitable lighting conditions. For example, the lighting conditions for tomatoes in the seedling stage and in the fruit-setting stage are significantly different, while the light intensity is consistent in the same cultivation space. For example, the light intensity in the cultivation space is set to 1500Lux, which is suitable for tomatoes in the fruit-setting stage, but not for tomatoes in the seedling stage. Therefore, the distance between the planting trough 120 and the light source of tomatoes in the seedling stage can be increased to reduce the light intensity for tomatoes in the seedling stage.

[0107] Preferably, the plurality of planting frames 110 of the close planting mechanism 100 are independent of each other, so that the control module 220 can adjust the spacing between the planting frames 110. When adjacent crops block or interfere with each other, the control module 220 controls to increase the spacing between the planting frames 110; when the spacing between adjacent crops is too large, the control module 220 controls to reduce the spacing between the planting frames 110 to improve the utilization efficiency of the cultivation space.

[0108] Preferably, the acquisition module acquires the plant images of tomatoes in the dense planting mechanism 100 and sends them to the control module 220, and the control module 220 identifies the plant images of tomatoes to determine whether there are overlapping parts between the plants. When the acquisition module detects that there are overlapping parts between the plants, the control module 220 analyzes the upper unobstructed part and the obstructed part according to the received image of the tomato plant. Specifically, the upper unobstructed part is the plant part close to the acquisition module, and the obstructed part is the plant part far from the acquisition module and obstructed by the upper unobstructed part.

[0109] Preferably, the acquisition module uses a Sony HDR-CX405 camera.

[0110] Preferably, the method for identifying whether there is overlap between plants in this embodiment is similar to the method provided by Chinese Patent CN107038446B. Preferably, the method for the control module 220 to analyze the upper unobstructed part and the obstructed part of the plant is similar to the method provided by Chinese Patent CN107038446B.

[0111] According to a preferred embodiment, when it is detected that there are overlapping parts between tomato plants, the control module 220 controls the planting stand 110 to increase the spacing in the lateral direction to separate the upper unobstructed part of the plant from the obstructed part in the lateral direction, thereby allowing the leaves of adjacent plants to be fully exposed to the light source. Specifically, the spacing of the planting stand 110 increased in the lateral direction depends on the obstruction situation. For example, the increased spacing can be 10 to 30 cm. When the planting stand 110 increases the distance of 20 cm in the lateral direction, the upper unobstructed part is separated from the obstructed part, that is, the obstructed part can be fully exposed to the light condition.

[0112] According to a preferred embodiment, when overlapping parts between plants are detected, the control module 220 sends a prompt message to remind the management personnel to trim the upper unobstructed parts of the plants (such as leaves or side branches), so that the obstructed parts of the tomato plants are fully exposed to light conditions.

[0113] Preferably, the control module 220 obtains images of different growth stages of crops of different planting batches, and when the actually obtained images coincide with the standard images, the growth stage of the crops is determined. The control module 220 analyzes the data of the entire growth stage of tomatoes to obtain the optimal spacing distance of the planting racks 110. For example, the spacing between adjacent planting racks 110 is 100 cm. When tomatoes are in the seedling stage, there is a spacing of about 70 cm between adjacent tomato seedlings. As the tomatoes grow, when the tomatoes enter the late fruiting stage, the spacing between adjacent tomato plants is less than 10 cm; when the tomatoes enter the fruit ripening stage, the leaves of adjacent tomato plants overlap, and the overlapping part in the horizontal direction is about 20 cm. After analyzing the information that the overlapping part of the tomato plants is about 20 cm when the spacing between adjacent planting racks 110 is 1 m, the control module 220 controls the spacing between adjacent planting racks 110 to be 120 cm, and stores the spacing as the optimal spacing of the planting racks 110 corresponding to the tomato variety.

[0114] Therefore, this solution ensures that adjacent crops do not block or affect each other while making full use of the cultivation space.

[0115] For example, when planting different varieties of tomatoes, the spacing distances of the planting racks 110 are different. The spacing of the planting racks 110 for planting T-Powder 86 tomatoes is 30 cm, while the spacing of cherry tomatoes can be 15 cm. The control module 220 stores the optimal spacing of the planting racks 110 of different tomato varieties. When planting the variety next time, the control module 220 can directly retrieve the stored optimal spacing information and control the spacing of the planting racks 110 to be the optimal spacing.

[0116] Example 4

[0117] This embodiment provides a method for providing nutrient solution for dense planting of tomatoes, comprising the following steps:

[0118] Planting tomatoes in different planting batches at adjacent positions of the close planting mechanism 100;

[0119] Collect images of tomatoes to obtain information about their growth stages;

[0120] Adjust the ratio of nutrients in the nutrient solution provided to tomatoes.

[0121] It should be noted that the above-mentioned specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the present invention, and these solutions also belong to the disclosure scope of the present invention and fall within the protection scope of the present invention. Those skilled in the art should understand that the present invention specification and its drawings are illustrative and do not constitute a limitation of the claims. The scope of protection of the present invention is defined by the claims and their equivalents. The present invention specification contains multiple inventive concepts, such as "preferably", "according to a preferred embodiment" or "optionally", all of which indicate that the corresponding paragraph discloses an independent concept, and the applicant reserves the right to file a divisional application based on each inventive concept. Throughout the text, the features guided by "preferably" are only an optional method and should not be understood as being required. Therefore, the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. A tomato dense planting nutrient solution providing system, comprising: A dense planting mechanism (100) for providing a cultivation environment for tomatoes; a liquid supply mechanism (200) for providing nutrient solution to the tomatoes grown in the dense planting mechanism (100); and a control module (220) for controlling the liquid supply mechanism (200) to deliver the nutrient solution, It is characterized in that The tomatoes cultivated at adjacent positions of the dense planting mechanism (100) belong to three planting batches including the seedling stage, the flowering and fruiting stage, and the fruit ripening stage. The system further comprises a collection module for acquiring information reflecting the growth stage of the tomatoes and the overlapping parts between the tomato plants, wherein the control module (220) adjusts the proportion of the nutrient components of the nutrient solution provided by the liquid supply mechanism (200) to the tomatoes based on the information of the growth stage of the tomatoes acquired by the collection module, so as to avoid using a large amount of the same or several nutrient components in one period. The dense planting mechanism (100) comprises a plurality of planting frames (110) and planting grooves (120) arranged on the planting frames (110) for planting the tomatoes, wherein the tomatoes in the planting grooves (120) at adjacent positions of the planting frames (110) belong to different planting batches, so that the gaps between adjacent plants are increased. The tomatoes from different planting batches are arranged horizontally as follows: tomatoes from the first planting batch, tomatoes from the second planting batch, tomatoes from the first planting batch, and tomatoes from the third planting batch. The liquid level of the planting trough (120) where the tomatoes of the first planting batch are located is a first liquid level, and the tomatoes of the first planting batch are in the seedling stage; The liquid level in the planting tank (120) where the tomatoes of the second planting batch are located is the third liquid level, and the tomatoes of the second planting batch are in the flowering and fruiting period; The liquid level of the planting tank (120) where the tomatoes of the third planting batch are located is the second liquid level. The tomatoes of the third planting batch are in the fruit maturity period. The first liquid level is lower than the second liquid level, and the second liquid level is lower than the third liquid level.

2. The system according to claim 1, characterized in that The planting trough (120) is capable of vertical movement relative to the planting stand (110), thereby changing the liquid level of the nutrient solution in the planting trough (120).

3. The system according to claim 1 or 2, characterized in that: The liquid supply mechanism (200) comprises at least a first liquid pool (211) storing nitrogen-containing nutrients, a second liquid pool (212) storing phosphorus-containing nutrients, a third liquid pool (213) storing potassium-containing nutrients, and a fourth liquid pool (214) storing clean water, wherein the control module (220) controls the proportion of nutrient components in the nutrient solution supplied to the planting trough (120) by controlling the content of nutrients output from different liquid pools.

4. The system according to claim 1, characterized in that Adjacent positions of the close planting mechanism (100) cultivate at least two planting batches of tomatoes, wherein the growth time interval of different planting batches of tomatoes is 2 to 15 weeks.

5. The system according to claim 1 or 4, characterized in that: The adjacent positions of the close planting mechanism (100) cultivate two planting batches of tomatoes. The growth interval between the first batch of tomatoes and the second batch of tomatoes is 2 to 6 weeks. The liquid level of the planting trough (120) where the tomatoes of the first planting batch are located is a first liquid level, and the liquid level of the planting trough (120) where the tomatoes of the second planting batch are located is a third liquid level, wherein: The first liquid level is lower than the third liquid level.

6. The system according to claim 1 or 4, characterized in that: The adjacent positions of the close planting mechanism (100) cultivate two planting batches of tomatoes. The growth interval between the first and third planting batches of tomatoes is 7 to 15 weeks. The liquid level in the planting trough (120) where the tomatoes of the first planting batch are located is a first liquid level, and the liquid level in the planting trough (120) where the tomatoes of the third planting batch are located is a second liquid level, wherein: The first liquid level is lower than the second liquid level.

7. The system according to claim 1 or 4, characterized in that: The growing time interval between the first planting batch of tomatoes and the second planting batch of tomatoes is 2 to 6 weeks, and the growing time interval between the second planting batch of tomatoes and the third planting batch of tomatoes is 5 to 9 weeks.

8. The system according to claim 1, characterized in that The planting stand (110) comprises at least two planting layers, wherein each planting layer is provided with at least one planting groove (120).

9. A method for providing nutrient solution for dense planting of tomatoes, characterized in that: The method is implemented by the tomato dense planting nutrient solution providing system according to claim 1, comprising the following steps: Planting tomatoes from three planting batches, including the seedling stage, the flowering and fruiting stage, and the fruit ripening stage, at adjacent positions of the close planting mechanism (100) so that the gaps between adjacent plants are increased; Collecting the tomato plant images to obtain the growth stages and the information reflecting the overlapping parts between the tomato plants; Adjust the ratio of nutrients in the nutrient solution provided to tomatoes to avoid using large amounts of the same or several nutrients in one period. The tomatoes from different planting batches are arranged horizontally as follows: tomatoes from the first planting batch, tomatoes from the second planting batch, tomatoes from the first planting batch, and tomatoes from the third planting batch. The liquid level of the planting trough (120) where the tomatoes of the first planting batch are located is a first liquid level, and the tomatoes of the first planting batch are in the seedling stage; The liquid level in the planting tank (120) where the tomatoes of the second planting batch are located is the third liquid level, and the tomatoes of the second planting batch are in the flowering and fruiting period; The liquid level of the planting tank (120) where the tomatoes of the third planting batch are located is the second liquid level. The tomatoes of the third planting batch are in the fruit maturity period. The first liquid level is lower than the second liquid level, and the second liquid level is lower than the third liquid level.

Images