A cultivation system for vegetables and fruits that are low in potassium and have adjustable nutrient content.

Abstract

This system provides a cultivation method for vegetables and fruits that are low in potassium and have adjustable nutrient content. [Solution] The system comprises a base 1 provided with at least two spaced-apart nutrient solution tanks, a cultivation tray 2 slidably mounted on the base and suitable for sliding to align with different nutrient solution tanks according to the growing season of vegetables and fruits, an environmental control module 3 for adjusting the ambient temperature and light of the cultivation tray, a nutrient supply module 4 including a first supply device 41 for supplying potassium-containing nutrient solution to one nutrient solution tank and a second supply device 42 for supplying low-potassium nutrient solution or potassium-free nutrient solution to another nutrient solution tank, and a microcontroller unit electrically connected to the environmental control module and the nutrient supply module to control the operation of the environmental control module and the supply amount and timing of the nutrient solution supplied by the first and second supply devices to the nutrient solution tanks.

Description

[Technical Field]

[0001] This invention relates to a system for cultivating vegetables and fruits, and more particularly to a system for cultivating vegetables and fruits with low potassium content, which has low potassium content and allows for adjustment of nutrients. [Background technology]

[0002] Chronic kidney disease (CKD), also known as chronic kidney failure, is a kidney disorder characterized by a glomerular filtration rate (GFR) of 60 mL / min / 1.73 m². 2 It is defined as having a glomerular filtration rate of less than 15 mL / min / 1.73 m², with abnormalities detected in blood tests, urine tests, or imaging tests, and a history of onset lasting more than 3 months. 2 When the levels fall below a certain point, it indicates that the patient's kidneys are no longer functioning normally, and kidney function needs to be taken over by hemodialysis (commonly known as kidney lavage).

[0003] Therefore, for patients with renal impairment, there are many things to be mindful of in their daily diet, including the need to limit potassium intake. However, because many fruits and vegetables are high in potassium ions, patients with renal impairment (especially those undergoing hemodialysis) cannot always easily eat fruits and vegetables, leading to nutritional imbalances. [Overview of the project] [Problems that the invention aims to solve]

[0004] In light of this, the inventor researched and developed a cultivation system for vegetables and fruits that have a low potassium content and whose nutrients can be adjusted, enabling the cultivation of vegetables and fruits with low potassium content. [Means for solving the problem]

[0005] To achieve the above and other objectives, the present invention provides a low-potassium, nutrient-adjustable vegetable and fruit cultivation system comprising: a base provided with at least two spaced-apart nutrient solution tanks; a cultivation tray slidably mounted on the base and suitable for sliding to align with different nutrient solution tanks according to the cultivation period of vegetables and fruits; an environmental control module for adjusting the ambient temperature and light of the cultivation tray; a nutrient supply module including a first supply device for supplying potassium-containing nutrient solution to one nutrient solution tank and a second supply device for supplying low-potassium or potassium-free nutrient solution to another nutrient solution tank; and a microcontroller unit electrically connected to the environmental control module and the nutrient supply module to control the operation of the environmental control module and the supply amount and timing of the supply of nutrient solution by the first and second supply devices to the nutrient solution tanks.

[0006] In the above-described cultivation system for vegetables and fruits having low potassium content and adjustable nutrients, the cultivation tray may include a mounting tray and a sliding structure, the sliding structure being able to connect the mounting tray and the base.

[0007] In the above-described cultivation system for vegetables and fruits that have low potassium content and adjustable nutrients, the tray may have a main body and a skirt edge, the skirt edge being connected to the outer circumference of the main body, and the sliding structure may be provided between the skirt edge and the support surface of the base.

[0008] In the above-described low-potassium, nutrient-adjustable vegetable and fruit cultivation system, the base may include a bottom plate and a peripheral wall, the peripheral wall may be connected to the periphery of the bottom plate, at least one partition plate may be connected to the inner wall of the bottom plate and the peripheral wall to partition the interior of the base into at least two nutrient solution tanks, the support surface may be the top surface of the peripheral wall, and the skirt edge and the support surface may face each other in the longitudinal direction.

[0009] In the above-described cultivation system for vegetables and fruits that have low potassium content and adjustable nutrients, the sliding structure may be a rolling member attached to the skirt edge.

[0010] The low-potassium, nutrient-adjustable vegetable and fruit cultivation system may further include a slide driver, the microcontroller unit being electrically connected to the slide driver to control the slide driver so that the cultivation tray slides against the base.

[0011] In the above-described low-potassium, nutrient-adjustable vegetable and fruit cultivation system, the environmental control module may include an image capture unit, the microcontroller unit is electrically connected to the image capture unit, the image capture unit is suitable for capturing images of vegetable and fruit plants toward the cultivation tray, and the microcontroller unit, after receiving the images, analyzes the growth status of the vegetable and fruit plants and controls the slide driver so that the cultivation tray slides toward the base and aligns with the appropriate nutrient solution tank.

[0012] In the above-described low-potassium vegetable and fruit cultivation system with adjustable nutrients, the number of nutrient solution tanks may be an even number greater than two, the plurality of nutrient solution tanks may be arranged in one extending direction, the first supply device is suitable for supplying potassium-containing culture solution to odd-numbered nutrient solution tanks, and the second supply device is suitable for supplying low-potassium culture solution or potassium-free culture solution to even-numbered nutrient solution tanks.

[0013] In the above-described low-potassium vegetable and fruit cultivation system with adjustable nutrients, the nutrient supply module may further include at least one third supply device, the third supply device being suitable for changing the composition of the nutrient solution in the nutrient solution tank by providing a conditioned nutrient solution to the nutrient solution tank.

[0014] In the above-described cultivation system for vegetables and fruits having low potassium and adjustable nutrients, the liquid supply module may further include at least one liquid level sensor, and the liquid level sensor is provided in the nutrient solution tank for detecting the liquid level height in the nutrient solution tank. The microcontroller unit controls the first supply device or the second supply device to stop the supply of the culture solution to the nutrient solution tank by receiving the detection signal of the liquid level sensor, or controls the first supply device or the second supply device to replenish the nutrient solution tank with the culture solution when the culture solution in the nutrient solution tank is reduced until it exceeds the set threshold value.

Advantages of the Invention

[0015] Thereby, the cultivation system for vegetables and fruits having low potassium and adjustable nutrients of the present invention can slide the cultivation tray according to the cultivation period of vegetables and fruits and align it with different nutrient solution tanks. Thereby, the plants of vegetables and fruits can absorb specific culture solutions and grow, and the switching method is also very convenient. The vegetables and fruits cultivated by the cultivation system for vegetables and fruits of the present invention have a low potassium content or almost no potassium, and patients with kidney function disorders can eat them with confidence, which can contribute to improving the diet balance and enhancing health.

Brief Description of the Drawings

[0016] [Figure 1] It is a schematic plan view of an embodiment of the present invention. [Figure 2] It is a schematic perspective view of a partial cross-section of an embodiment of the present invention. [Figure 3] It is a schematic perspective view of a partial cross-section seen from another direction of an embodiment of the present invention. In the figure, the arrow indicates the sliding direction of the cultivation tray. [Figure 4] It is a block diagram of a system of an embodiment of the present invention.

Modes for Carrying Out the Invention

[0017] In order to fully understand the purpose, features, and effects of this invention, the present invention will be described in detail below with reference to the attached drawings, using the following specific embodiments.

[0018] Refer to Figures 1 and 4, which show one preferred embodiment of the vegetable and fruit cultivation system according to the present invention, which has low potassium content and adjustable nutrients. The vegetable and fruit cultivation system comprises a base 1, a cultivation tray 2, an environmental control module 3, a liquid supply module 4, and a microcontroller unit 5, wherein the cultivation tray 2 is slidably mounted on the base 1, and the microcontroller unit 5 is electrically connected to the environmental control module 3 and the liquid supply module 4.

[0019] Referring to Figures 1 to 3, the base 1 is provided with at least two spaced-apart nutrient solution tanks 11. In one embodiment of the present invention, the at least two nutrient solution tanks 11 may be directly formed inside the base 1, and two adjacent nutrient solution tanks 11 may be separated from each other by a partition plate 12. Specifically, the base 1 may include a bottom plate 13 and a peripheral wall 14, the peripheral wall 14 being connected to the periphery of the bottom plate 13, and the partition plate 12 being connected to the inner walls of the bottom plate 13 and the peripheral wall 14. This allows the inside of the base 1 to be partitioned into multiple nutrient solution tanks 11, and the liquid in two adjacent nutrient solution tanks 11 cannot flow to each other as long as the liquid level is below the height of the partition plate 12. Furthermore, the height of the partition plate 12 may be lower than the height of the peripheral wall 14, thereby leaving space inside the base 1 above each nutrient solution tank 11 for sliding the cultivation tray 2. However, the present invention is not limited to this form, and in other possible embodiments, the base 1 may be, for example, a pedestal, and the pedestal may be provided with a plurality of liquid-filled bowls, and the inside of the plurality of liquid-filled bowls becomes the nutrient solution tank 11.

[0020] The cultivation tray 2 includes a mounting tray 21, which may have a main body 211 and a plurality of planting sections 212. The plurality of planting sections 212 may be arranged in an array on the main body 211, for example. Each planting section 212 has holes in which an adsorbent (not shown) can be placed. The adsorbent may be a medium such as a sponge that can adsorb culture solution. The adsorbent can be used to place vegetable or fruit seeds, or to transplant vegetable or fruit seeds onto the adsorbent after germination for continued growth.

[0021] The environmental control module 3 is for adjusting the ambient temperature and light exposure around the cultivation tray 2. Specifically, the environmental control module 3 may include a light source 31 and a temperature controller 32. The light source 31 may be, for example, an LED lamp that can be switched on / off by control or whose illuminance and color temperature can be adjusted. The temperature controller 32 may include, for example, a cooling chip 321 and a heating chip 322, where the cooling chip 321 is for lowering the ambient temperature and the heating chip 322 is for raising the ambient temperature.

[0022] The liquid supply module 4 includes a first supply device 41 and a second supply device 42, the first supply device 41 for supplying potassium-containing culture solution to one nutrient solution tank 11, and the second supply device 42 for supplying low-potassium culture solution or potassium-free culture solution to another nutrient solution tank 11.

[0023] Referring to Figures 1 and 4, the microcontroller unit 5 is electrically connected to the environmental control module 3 and the nutrient solution supply module 4 in order to control the operation of the environmental control module 3 and the supply amount and timing of the first supply device 41 and the second supply device 42 supplying culture solution to the nutrient solution tank 11.

[0024] Referring to Figures 1 to 4, when cultivating vegetables and fruits using the vegetable and fruit cultivation system of this embodiment, taking cultivation from vegetable and fruit seeds as an example, the cultivation tray 2 may be mounted on the base 1 so that the multiple planting sections 212 of the previously described planting tray 21 are aligned within a single nutrient solution tank 11.

[0025] During the germination promotion period, vegetable and fruit seeds are placed in the moisture-containing adsorbent material in the multiple planting sections 212, and the microcontroller unit 5 can provide an appropriate temperature around the cultivation tray 2 by controlling the temperature controller 32 of the environmental control module 3.

[0026] After germination, vegetable and fruit seeds transition to the seedling stage. The microcontroller unit 5 controls the light source 31 and temperature controller 32 of the environmental control module 3 to provide appropriate light and temperature around the cultivation tray 2, enabling the young vegetable and fruit seedlings to grow smoothly.

[0027] When the cultivation period begins, the microcontroller unit 5 can provide appropriate irradiation light and temperature around the cultivation tray 2 by controlling the light source 31 and temperature controller 32 of the environmental control module 3. It can also control the first supply device 41 to provide potassium-containing culture solution to the nutrient solution tanks 11 aligned with the multiple planting sections 212, thereby enabling the vegetable and fruit plants P to absorb the potassium-containing culture solution and grow during the cultivation period.

[0028] When the vegetable or fruit plant P transitions to the processing stage, the microcontroller unit 5 controls the second supply device 42 to provide a low-potassium or potassium-free nutrient solution to another nutrient solution tank 11, and slides the cultivation tray 2 relative to the base 1 to align the multiple planting sections 212 with the nutrient solution tank 11 containing the low-potassium or potassium-free nutrient solution. Furthermore, by cooperating control of the light source 31 and temperature controller 32 of the environmental control module 3, appropriate irradiation light and temperature can be provided around the cultivation tray 2, thereby allowing the vegetable or fruit plant P to absorb the low-potassium or potassium-free nutrient solution and grow during the processing stage until harvest.

[0029] As described above, the vegetable and fruit cultivation system of this embodiment allows the cultivation tray 2 to be slid according to the cultivation period of the vegetables and fruits to be positioned in different nutrient solution tanks 11, thereby enabling the vegetable and fruit plants P to absorb specific nutrient solutions and grow, and the switching method is also very convenient. Here, during the cultivation period, a potassium-containing nutrient solution ensures that the vegetable and fruit plants P grow healthily, and by using a low-potassium nutrient solution or a potassium-free nutrient solution during the pre-harvest treatment period, the potassium content in the vegetables and fruits at harvest is reduced, making it possible to harvest low-potassium vegetables and fruits suitable for consumption by patients with renal impairment, allowing them to eat with peace of mind and promote health through a more balanced diet.

[0030] It is particularly important to explain that the vegetable and fruit cultivation system of this embodiment does not necessarily involve cultivating from vegetable or fruit seeds; vegetables and fruits may be cultivated from the seedling stage or the growing stage. In other words, since the purpose of this invention is to improve the convenience of switching when providing different nutrient solutions to plant bodies P at different cultivation times, it is not limited to the cultivation examples described above.

[0031] Furthermore, this invention does not limit the sliding connection structure between the cultivation tray 2 and the base 1; it is sufficient that the cultivation tray 2 can be slidably displaced relative to the base 1. For example, in one embodiment of this invention, the cultivation tray 2 may include a sliding structure 22, which connects the aforementioned tray 21 and the base 1, thereby allowing the aforementioned tray 21 to change its position relative to the base 1 by the sliding structure 22; however, the sliding connection structure is not limited thereto. For example, the sliding structure 22 may be a slide rail set, the slide rail may be combined with either the base 1 or the aforementioned tray 21, and the slider may be combined with the other. Alternatively, one of the base 1 or the aforementioned tray 21 may be directly a slide rail structure, and the slider may be attached to the other, thereby enabling relative sliding. Alternatively, the base 1 and the tray 21 described above may each be made into elongated grooves and protrusions that can be fitted and slid relative to each other, and the present invention is not limited to this.

[0032] Referring to Figure 2, in one embodiment of the present invention, other than the above embodiment, the aforementioned tray 21 may further have a skirt edge 213 connected to the outer circumference of the main body 211, and the skirt edge 213 may be connected to the main body 211 in an annular manner, or to only a part of the periphery of the main body 211, and the present invention is not limited thereto. The sliding structure 22 is provided between the skirt edge 213 and the support surface 15 of the base 1. In this way, the cultivation tray 2 of this embodiment can be easily attached to and removed from the base 1 from above, and the arrangement of the sliding structure 22 does not affect the smoothness of attaching and removing the cultivation tray 2.

[0033] Here, the support surface 15 of the base 1 may also be the top surface of the peripheral wall 14, so that the skirt edge 213 and the support surface 15 can face each other in the vertical direction. In this way, the cultivation tray 2 of this embodiment can be stably contacted by the support surface 15 of the base 1 via the sliding structure 22 due to the weight of the aforementioned tray 21 and the object placed on the aforementioned tray 21, and it is possible to ensure that the cultivation tray 2 can slide smoothly against the base 1.

[0034] In addition to the embodiments described above, in one embodiment of the present invention, the sliding structure 22 may be selected as a rolling member such as a ball or wheel attached to the skirt edge 213. Thus, the sliding structure 22 of this embodiment has the advantages of being simple in structure, easy to install, and durable.

[0035] Referring to Figures 2 and 4, in one embodiment of the present invention, other than the above embodiment, the vegetable or fruit cultivation system may further include a slide driver 6, and the microcontroller unit 5 is electrically connected to the slide driver 6 to control the slide driver 6 so that the cultivation tray 2 slides relative to the base 1. For example, if the sliding structure 22 is a wheel, the slide driver 6 may be, for example, a wireless motor driver, which can be controlled and driven to rotate the sliding structure 22. In this way, the cultivation tray 2 can be controlled automatically or semi-automatically to slide relative to the base 1, eliminating the need for the operator to push the cultivation tray 2, and further allowing the displacement of the cultivation tray 2 to be controlled remotely, thereby improving the convenience of operation.

[0036] Here, the environmental control module 3 includes an image capture unit 33, the microcontroller unit 5 is electrically connected to the image capture unit 33, the image capture unit 33 is suitable for taking images of vegetable and fruit plants P toward the cultivation tray 2, and the microcontroller unit 5, after receiving the images, analyzes the growth status of the vegetable and fruit plants P and controls the slide driver 6 so that the cultivation tray 2 slides toward the base 1 and aligns with the appropriate nutrient solution tank 11.

[0037] Referring to Figures 1 to 3, in one embodiment of the present invention, other than the above embodiment, the number of nutrient solution tanks 11 is preferably an even number greater than 2, such as 4, 6, or 8. The plurality of nutrient solution tanks 11 are arranged in one extending direction, and the extending direction may be, for example, a straight line or a curved direction. The first supply device 41 is suitable for supplying potassium-containing culture solution to odd-numbered nutrient solution tanks 11, and the second supply device 42 is suitable for supplying low-potassium culture solution or potassium-free culture solution to even-numbered nutrient solution tanks 11. Thus, in this embodiment, the plurality of cultivation trays 2 are aligned to the odd-numbered nutrient solution tanks 11 during the cultivation period, and when the processing period begins, the plurality of cultivation trays 2 are synchronously slid relative to the base 1 to align to the even-numbered nutrient solution tanks 11, and after harvesting, the plurality of cultivation trays 2 are again synchronously slid relative to the base 1 to align to the odd-numbered nutrient solution tanks 11, thereby improving the cultivation volume and management convenience of the entire cultivation system.

[0038] Referring to Figures 1 and 4, in one embodiment of the present invention, other than the above embodiment, the liquid supply module 4 may further include at least one third supply device 43, the third supply device 43 being suitable for changing the composition of the culture solution in the nutrient solution tank 11 by providing a conditioned culture solution to the nutrient solution tank 11. For example, there may be two third supply devices 43 in this embodiment, one of which can provide a magnesium-containing culture solution and the other can provide a zinc-containing culture solution. By supplying liquid to specific nutrient solution tanks 11 according to different cultivation needs, the vegetables and fruits harvested last can have nutrient content that meets expectations, for example, vegetables and fruits that are low in potassium and high in zinc, or vegetables and fruits that are low in potassium and high in magnesium.

[0039] Referring to Figures 1 and 4, in one embodiment of the present invention other than the above embodiment, the liquid supply module 4 may further include at least one liquid level sensor 44, the liquid level sensor 44 being provided in the nutrient solution tank 11 and for detecting the liquid level height in the nutrient solution tank 11. The microcontroller unit 5 receives a detection signal returned by the liquid level sensor 44 and controls the first supply device 41, the second supply device 42, or the third supply device 43 to stop supplying culture solution to the nutrient solution tank 11, or controls the first supply device 41, the second supply device 42, or the third supply device 43 to replenish culture solution in the nutrient solution tank 11 when the culture solution in the nutrient solution tank 11 has decreased to a set threshold.

[0040] In particular, it should be explained that in this invention, the form of the piping connecting the first supply device 41, the second supply device 42, or the third supply device 43 to each of the nutrient solution tanks 11 is not limited. For example, they may be connected via multiple piping lines, or the piping lines may be appropriately shared and controlled in combination with electromagnetic valves.

[0041] Furthermore, the following provides examples of fruits and vegetables that can be cultivated using the vegetable and fruit cultivation system of this invention.

[0042] One cultivation example of this invention involves cultivating a low-potassium cantaloupe plant from cantaloupe seeds. In this invention, "cantaloupe" refers to an annual or biennial herbaceous plant of the genus Lactuca, belonging to the family Cucurbitaceae. In this invention, subsequent tests were conducted using a netted melon (Cucumismelo L. var. reticulatus Naud.) which has a net-like pattern on its exterior, a thick rind, and soft flesh. However, those skilled in the art can select and test different varieties of cantaloupe as needed, and are not limited thereto.

[0043] During the period for promoting the germination of the cantaloupe seeds, the microcontroller unit 5 controlled the operation of the temperature controller 32 to maintain a temperature of 20°C around the cultivation tray 2 and promoted germination for 24 hours [days after sowing (DAS) = 0], that is, the first environmental parameter was set to a temperature of 20°C and a duration of 24 hours. After that, the germinated cantaloupe seeds were transferred to each of the planting sections 212 (DAS = 1) and cultivation was started.

[0044] During the seedling stage of the cantaloupe seeds (DAS1-12), the microcontroller unit 5 controls the operation of the light source 31 and sets the light intensity of the light source 31 to 160 μmol·m -2 ·s -1 The settings were adjusted to set the light irradiation period to a 24-hour light irradiation period. The microcontroller unit 5 controls the operation of the temperature controller 32 to maintain the area around the cultivation tray 2 at 26°C, that is, the light intensity was set to 160 μmol·m as the second environmental parameter. -2 ·s -1 The light irradiation period was set to 24 hours, and the temperature to 26°C.

[0045] From the 13th day after sowing (DAS = 13), it shifted to the cultivation period of the seeds of the wax gourd, and the number of days was 46 days. The microcontroller unit 5 controls the operation of the light source 31 and maintains the light quantity of the light source 31 at 160 μmol·m -2 ·s -1 and adjusts the light irradiation cycle to an 18-hour light irradiation period and a 6-hour dark period. The microcontroller unit 5 controls the operation of the temperature controller 32 to maintain the temperature around the cultivation tray 2 at 31 °C during the light irradiation period and 25 °C during the dark period, that is, as the third environmental parameter, the light quantity is 160 μmol·m -2 ·s -1 and the light irradiation cycle is an 18-hour light irradiation period at 31 °C and a 6-hour dark period at 25 °C.

[0046] In this cultivation example, the potassium-containing culture solution supplied by the first supply device 41 contains calcium nitrate (Ca(NO3)2·4H2O), potassium nitrate (KNO3), ammonium dihydrogen phosphate (NH4H2PO4), potassium dihydrogen phosphate (KH2PO4), potassium sulfate (K2SO4), magnesium sulfate (MgSO4·7H2O), sodium ethylenediaminetetraacetate iron (C 10 H 12The following chemicals were used: N2NaFeO8, boric acid (H3BO3), manganese chloride (MnCl2·4H2O), zinc sulfate (ZnSO4·7H2O), copper sulfate (CuSO4·5H2O), and sodium molybdate (Na2MoO4·2H2O). As a result, the potassium-containing culture medium per liter contained 200.73 mg of nitrate nitrogen (NO3-N), 17.36 mg of ammonium nitrogen (NH4-N), 38.40 mg of phosphorus, and 2 The low-potassium culture solution contains 24.10 mg of potassium, 172.32 mg of calcium, 63.51 mg of magnesium, and 83.79 mg of sulfur. Furthermore, the low-potassium culture solution contains trace elements such as 2.6 mg of iron, 0.3 mg of manganese, 0.02 mg of copper, 0.05 mg of zinc, 0.004 mg of molybdenum, 0.001 mg of sodium, and 0.27 mg of boron per liter. During cultivation, the pH of the potassium-containing culture solution is adjusted to 6.0 using 1N sodium hydroxide (NaOH), and the conductivity of the potassium-containing culture solution is set to 1.2 mS·cm. -1 We ensured that it would be maintained.

[0047] The processing period for the cantaloupe seeds was 39 days. The microcontroller unit 5 controls the operation of the light source 31, and the light intensity of the light source 31 is set to 160 μmol·m -2 ·s -1 The light irradiation cycle was adjusted to an 18-hour light irradiation period and a 6-hour dark period. The microcontroller unit 5 controlled the operation of the temperature controller 32 to maintain the temperature around the cultivation tray 2 at 31°C during the light irradiation period and 25°C during the dark period; that is, the fourth environmental parameter was the same as the third environmental parameter.

[0048] In this cultivation example, the low-potassium culture solution supplied by the second supply device 42 is almost identical to the potassium-containing culture solution in terms of the chemicals used, except that potassium nitrate (KNO3) is replaced with ammonium nitrate (NH4NO3). Per liter of the low-potassium culture solution, there are 77.9 mg of nitrate nitrogen (NO3-N), 0.0 mg of ammonium nitrogen (NH4-N), 23.8 mg of phosphorus, 156.0 mg of potassium, 73.4 mg of calcium, 41.7 mg of magnesium, and 71.4 mg of sulfur. Furthermore, per liter of the low-potassium culture solution, there are trace elements such as 2.6 mg of iron, 0.3 mg of manganese, 0.02 mg of copper, 0.05 mg of zinc, 0.004 mg of molybdenum, 0.001 mg of sodium, and 0.54 mg of boron. During the cultivation process, the pH value of the low-potassium culture solution was similarly adjusted to 6.0 using 1N sodium hydroxide (NaOH), and the conductivity value of the low-potassium culture solution was set to 1.2 mS·cm. -1 We ensured that it would be maintained.

[0049] Another cultivation example of this invention involves cultivating low-potassium lettuce plants from lettuce seeds. In this invention, "lettuce" refers to an annual or biennial herbaceous plant of the genus Lactuca in the family Asteraceae. Based on its appearance, it can be divided into two types: heading and non-heading. Based on the shape of its leaves, it can be further divided into round-leaved, narrow-leaved, pointed-leaved, angular-leaved, sword-leaved, lobed-leaved, tangled-leaved, colorful-leaved, etc. In this invention, subsequent tests were conducted using Lactuca sativa L., but those skilled in the art can select and test and adjust different varieties of lettuce as needed, and are not limited thereto.

[0050] During the period for promoting the germination of the lettuce seeds, the microcontroller unit 5 controlled the temperature controller 32 to maintain a temperature of 20°C around the cultivation tray 2 and promoted germination for 24 hours [days after sowing (DAS) = 0], that is, the first environmental parameter was set to a temperature of 20°C and a duration of 24 hours. After that, the germinated lettuce seeds were transferred to each of the planting sections 212 (DAS = 1) and cultivation was started.

[0051] During the seedling stage of the lettuce seeds (DAS1-7), the microcontroller unit 5 controls the operation of the light source 31, and the light intensity of the light source 31 is set to 200 μmol·m -2 ·s -1 The settings were adjusted to set the light irradiation period to a 24-hour light irradiation period. The microcontroller unit 5 controls the operation of the temperature controller 32 to maintain the area around the cultivation tray 2 at 25°C, that is, the light intensity was set to 200 μmol·m as the second environmental parameter. -2 ·s -1 The light irradiation period was set to 24 hours, and the temperature to 25°C.

[0052] From the 8th day after sowing (DAS=8), the cultivation period for the lettuce seeds begins, and the number of days may be 23 to 27 days as needed. The microcontroller unit 5 controls the operation of the light source 31, and the light intensity of the light source 31 is set to 200 μmol·m -2 ·s -1 The light was maintained at a constant level, and the light irradiation cycle was adjusted to an 18-hour light irradiation period and a 6-hour dark period. The microcontroller unit 5 controlled the operation of the temperature controller 32 to maintain the temperature around the cultivation tray 2 at 25°C during the light irradiation period and 20°C during the dark period, that is, the light intensity was set to 200 μmol·m as the third environmental parameter. -2 ·s -1 The light irradiation period consisted of an 18-hour light irradiation period at 25°C and a 6-hour dark period at 20°C.

[0053] In this cultivation example, the potassium-containing culture solution supplied by the first supply device 41 contains potassium nitrate (KNO3), ammonium dihydrogen phosphate (NH4H2PO4), magnesium sulfate (MgSO4·7H2O), and sodium ferric ethylenediaminetetraacetate (C 10 H 12 The following chemicals were used: N2NaFeO8, calcium nitrate (Ca(NO3)2·4H2O), manganese sulfate (MnSO4·H2O), boric acid (H3BO3), copper sulfate (CuSO4·5H2O), zinc sulfate (ZnSO4·7H2O), and sodium molybdate (Na2MoO4·2H2O). As a result, the potassium-containing culture medium contained 84.0 mg of nitrate nitrogen (NO3-N) and 63.0 mg of ammonium nitrogen (NH3) per liter. The potassium-containing culture solution contains 15.4 mg of phosphorus, 156.0 mg of potassium, 40.0 mg of calcium, 12.2 mg of magnesium, and 16.2 mg of sulfur per liter. Furthermore, the potassium-containing culture solution contains trace elements such as 3.2 mg of iron, 0.5 mg of manganese, 0.02 mg of copper, 0.05 mg of zinc, 0.01 mg of molybdenum, and 1.3 mg of sodium per liter. During cultivation, the pH of the potassium-containing culture solution is adjusted to 6.0 ± 0.2 using 1N sodium hydroxide (NaOH), and the conductivity of the potassium-containing culture solution is set to 1.2 ± 0.2 mS·cm. -1 We ensured that it would be maintained.

[0054] The processing period for the lettuce seeds was set to a total of 35 days, including the cultivation period of the lettuce seeds, i.e., 8 to 12 days. The microcontroller unit 5 controlled the operation of the light source 31, and the light intensity of the light source 31 was set to 200 μmol·m -2 ·s -1 The light irradiation cycle was adjusted to an 18-hour light irradiation period and a 6-hour dark period. The microcontroller unit 5 controlled the operation of the temperature controller 32 to maintain the temperature around the cultivation tray 2 at 25°C during the light irradiation period and 20°C during the dark period; that is, the fourth environmental parameter was the same as the third environmental parameter.

[0055] In this cultivation example, the potassium-free culture solution supplied by the second supply device 42 uses almost the same chemicals as the potassium-containing culture solution, except that potassium nitrate (KNO3) is replaced with ammonium nitrate (NH4NO3). Per liter of the low-potassium culture solution contains 84.0 mg of nitrate nitrogen (NO3-N), 63.0 mg of ammonium nitrogen (NH4-N), 15.4 mg of phosphorus, 0.0 mg of potassium, 40.0 mg of calcium, 12.2 mg of magnesium, and 16.2 mg of sulfur. Furthermore, per liter of the potassium-free culture solution also contains trace elements such as 3.2 mg of iron, 0.5 mg of manganese, 0.02 mg of copper, 0.05 mg of zinc, 0.01 mg of molybdenum, and 1.3 mg of sodium. During the cultivation process, the pH of the potassium-free culture solution was similarly adjusted to 6.0 ± 0.2 using 1N sodium hydroxide (NaOH), and the conductivity of the potassium-free culture solution was set to 1.2 ± 0.2 mS·cm. -1 We ensured that it would be maintained.

[0056] It should be noted that in both of the aforementioned cultivation examples, high levels of iron were added to the culture solution used during the cultivation and processing stages. As a result, the cultivated vegetables and fruits have low potassium and high iron characteristics. Therefore, the problem of ischemia caused by prolonged consumption of low-potassium foods can be compensated for by supplementing with iron. Furthermore, the cultivation examples to which this invention applies are not limited to the two examples mentioned above.

[0057] Although the present invention has been disclosed above through preferred embodiments, those skilled in the art should understand that these embodiments are merely illustrative and should not be interpreted as limiting the scope of the present invention. It should be noted that all modifications and substitutions equivalent to those in the embodiments are included within the scope of the present invention. Therefore, the scope of protection of the present invention should be as defined by the claims. [Explanation of symbols]

[0058] 1 Base 11 Nutrient solution tank 12 partition plates 13 Bottom plate 14 Peripheral wall 15 Support surface 2 cultivation trays 21 Mounting tray 211 Main Unit 212 Planting Department 213 Skirt Edge 22 Sliding structure 3. Environmental control module 31 Light source 32 Temperature Controllers 321 Cooling Chip 322 Heating Chips 33 Image Capture Unit 4. Fluid supply module 41 1st supply device 42 Second supply device 43 Third supply device 5 Microcontroller Unit 6. Slide Driver P: The plant body of vegetables and fruits

Claims

1. A base provided with at least two spaced-apart nutrient solution tanks, A cultivation tray is slidably mounted on the base and is suitable for sliding to align with different nutrient solution tanks according to the growing season of vegetables and fruits, An environmental control module for adjusting the temperature and light around the cultivation tray, A supply module including a first supply device for supplying potassium-containing culture solution to one nutrient solution tank and a second supply device for supplying low-potassium culture solution or potassium-free culture solution to another nutrient solution tank, The system includes a microcontroller unit electrically connected to the environmental control module and the nutrient solution supply module in order to control the operation of the environmental control module and the supply amount and timing of the first supply device and the second supply device supplying culture solution to the nutrient solution tank. The cultivation tray includes a mounting tray and a sliding structure. The sliding structure connects the aforementioned tray and the base, The aforementioned mounting tray has a main body and a skirt edge, The skirt edge is connected to the outer circumference of the main body, The sliding structure is provided between the skirt edge and the support surface of the base, and is a rolling member attached to the skirt edge. The base includes a bottom plate and a peripheral wall. The aforementioned peripheral wall is connected to the periphery of the bottom plate, At least one partition plate is connected to the bottom plate and the inner wall of the peripheral wall in order to partition the interior of the base into the at least two nutrient solution tanks. The support surface is the top surface of the peripheral wall, A cultivation system for vegetables and fruits with low potassium content and adjustable nutrient levels, wherein the skirt edge and the support surface are facing each other in the longitudinal direction.

2. It also includes a slide driver, The microcontroller unit is electrically connected to the slide driver to control the slide driver so that the cultivation tray slides against the base. The aforementioned environmental control module includes an image capture unit, The microcontroller unit is electrically connected to the image capture unit. The image capture unit is suitable for taking images of vegetable and fruit plants toward the cultivation tray. The cultivation system for vegetables and fruits with low potassium content and adjustable nutrients, according to claim 1, wherein the microcontroller unit, after receiving the image, analyzes the growth status of the vegetable or fruit plant and controls the slide driver so that the cultivation tray slides relative to the base and aligns with the appropriate nutrient solution tank.

3. The number of nutrient solution tanks is an even number greater than two, and the plurality of nutrient solution tanks are arranged in one extending direction. The first supply device is suitable for supplying potassium-containing culture solution to odd-numbered nutrient solution tanks. The low-potassium, nutrient-adjustable vegetable and fruit cultivation system according to claim 1, wherein the second supply device is suitable for supplying a low-potassium culture solution or a potassium-free culture solution to even-numbered nutrient solution tanks.

4. The liquid supply module includes at least one third supply device, The third supply device is suitable for changing the composition of the culture solution in the nutrient solution tank by providing a conditioned culture solution to the nutrient solution tank, as described in claim 1, for the cultivation system of vegetables and fruits that have low potassium content and adjustable nutrients.

5. The liquid supply module includes at least one liquid level sensor, The liquid level sensor is installed in the nutrient solution tank and is for detecting the liquid level in the nutrient solution tank. The microcontroller unit controls the first supply device or the second supply device to stop supplying culture solution to the nutrient solution tank by receiving a detection signal from the liquid level sensor, or controls the first supply device or the second supply device to replenish the culture solution tank when the culture solution in the nutrient solution tank is reduced to a set threshold, according to claim 1, for growing vegetables and fruits that are low in potassium and have adjustable nutrients.

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