A melon seed greenhouse cultivation device

Abstract

The present application relates to a kind of greenhouse cultivation device for melon seed, innovatively set up main film and vice film in the greenhouse body, main film and vice film are in the state of winding when not using, during atomization cooling, through the main film and vice film of horizontal development, can block the water mist that has not evaporated, water mist is not easy to cause wetting to melon seedling leaf, also not easy to be absorbed by soil, reduce the probability of plant sudden death disease;During ventilation cooling, main film and vice film can isolate upper and lower layer area, realize the targeted cooling of the top in greenhouse body, when the temperature difference between upper and lower layer in greenhouse body is larger, through the delivery of gas by main film and vice film, can promote the flow of upper and lower layer gas, play the effect of balanced temperature, in addition, when external illumination is relatively strong, through the main film or vice film of development, can increase one or two layers of shading effect, realize the illumination intensity adjustment process, reduce the probability of melon seedling burn.

Description

Technical Field

[0001] This invention relates to a greenhouse cultivation device, and more particularly to a greenhouse cultivation device for melon seeds applied in the field of seed cultivation. Background Technology

[0002] Greenhouse seedling cultivation is a modern agricultural technology that optimizes plant growth by artificially controlling environmental conditions. It is mainly applied to the seedling stage of crops such as vegetables, flowers, and trees. Its core lies in relying on greenhouse facilities (such as greenhouses) and combining advanced technologies such as environmental control, irrigation and fertilization, pest and disease control, and intelligent management to create a suitable growth environment for seedlings, thereby significantly improving seedling efficiency and quality.

[0003] For example, Chinese patent CN118318638B discloses a greenhouse with a solar thermal system for seed cultivation. During the day, rotating solar water heaters heat water and solar power generators generate electricity. At night, the electricity generated by the solar power generators heats and insulates the water inside the buried water tank through heating and insulation components. A U-shaped pipe draws air from inside the glass greenhouse through a suction head, heats the air through the U-shaped pipe, and then the heated air is transported by a fan to a blower head and blown into the glass greenhouse, ensuring the temperature inside the glass greenhouse remains at night, which is beneficial for seed cultivation.

[0004] For example, Chinese patent CN116584279B discloses a new type of agricultural greenhouse. It uses a photosensitive sensor to detect the light intensity inside the multi-span greenhouse and sets up a dew removal mechanism on the side of the greenhouse frame and a cleaning mechanism on the upper part of the frame and above the greenhouse film. This allows the internal space of the multi-span greenhouse to automatically form a humidity layer with a low humidity upper layer and a high humidity lower layer. This avoids condensation and reduces light transmittance without affecting the environmental humidity required for plant growth. In addition, the top greenhouse film in the low humidity upper layer will not immediately condense again, and the light transmittance can be maintained.

[0005] When cultivating seeds in greenhouses, high temperatures (especially in summer) often occur inside the greenhouse, necessitating temperature and humidity control. Existing methods for greenhouse temperature control are relatively limited, generally relying on ventilation or misting for cooling. Ventilation is less efficient, and prolonged ventilation can cause changes in humidity inside the greenhouse. While misting is more efficient, the sprayed water mist tends to remain on seedlings and in the soil, increasing the probability of damping-off disease. Therefore, existing greenhouse temperature control methods have significant drawbacks. Summary of the Invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that although the existing greenhouses are equipped with temperature regulation devices, the temperature regulation methods have significant defects, which have an adverse effect on the growth and cultivation of seeds.

[0007] To address the aforementioned problems, this invention provides a greenhouse cultivation device for melon seeds, comprising a greenhouse body. Multiple evenly distributed uprights are fixedly connected inside the greenhouse body. The greenhouse body contains a main film and a secondary film, with the main film positioned above the secondary film. A first rotating rod and a second rotating rod are respectively located on the left and right sides of the main film, and multiple main winding ropes connect the main film and the second rotating rod. A third rotating rod and a fourth rotating rod are respectively located on the front and rear sides of the secondary film, and multiple secondary winding ropes connect the secondary film and the fourth rotating rod. Installation boxes are located at the four corners of the greenhouse body. The first, second, third, and fourth rotating rods are located between adjacent pairs of installation boxes. An electric motor is fixedly connected inside each installation box. One end of each of the first, second, third, and fourth rotating rods movably passes through multiple installation boxes and is fixedly connected to the output end of the electric motor; the other end movably passes through another installation box and is rotatably connected to the interior of that box.

[0008] As a further supplement to this application, the left end of the main film laying is fixedly connected to the first rotating rod, the right end of the main film laying is fixedly connected to one end of the main take-up rope, the other end of the main take-up rope is fixedly connected to the second rotating rod and wrapped around the outside of the second rotating rod, the front end of the secondary film laying is fixedly connected to the third rotating rod, the rear end of the secondary film laying is fixedly connected to one end of the secondary take-up rope, and the other end of the secondary take-up rope is fixedly connected to the fourth rotating rod and wrapped around the outside of the fourth rotating rod.

[0009] As a further supplement to this application, multiple uniformly distributed transverse and longitudinal channels are respectively provided on the main film-laying and the sub-film-laying, and the transverse and longitudinal channels are perpendicular to each other in space.

[0010] As a further supplement to this application, single-port boxes are fixedly connected to the four corners of the greenhouse body, and the opening end of the single-port box is connected to the inside of the greenhouse body. Multiple installation boxes extend to the inside of multiple single-port boxes respectively. A hydraulic cylinder is fixedly connected to the inner bottom surface of the single-port box, and the output end of the hydraulic cylinder is fixedly connected to the lower end of the installation box.

[0011] As a further supplement to this application, the main membrane has a hollow structure, and the upper end face of the main membrane is provided with multiple main micropores communicating with its interior. The cylindrical end of the first rotating rod is fixedly connected to and communicates with the main membrane.

[0012] As a further supplement to this application, the end of the first rotating rod away from the motor connected to it is rotatably connected to a second connecting pipe. The second connecting pipe is fixedly connected to the inside of the mounting box. The side end of the second connecting pipe is fixedly connected to the first connecting pipe. The side end of the single-port box is provided with a first slide rail. The end of the first connecting pipe extends out from the mounting box and is slidably connected to the inside of the first slide rail.

[0013] As a further supplement to this application, the mounting box includes an electrical box and a positioning box. The motor is fixedly connected inside the electrical box. One end of the first rotating rod, the second rotating rod, the third rotating rod, and the fourth rotating rod respectively movably passes through multiple electrical boxes and is fixedly connected to the output end of the motor. The other end of each of them movably passes through multiple positioning boxes and is rotatably connected to their interiors.

[0014] As a further supplement to this application, the first and second connecting pipes are both connected to the corresponding positioning boxes. The positioning box connected to the third rotating rod has an internal cavity. The end of the third rotating rod communicates with the cavity. The side end of the positioning box is fixedly connected to the third connecting pipe that communicates with the cavity. The side end of the single-port box corresponding to the position of the third connecting pipe has a second slide rail. The third connecting pipe is slidably connected to the inside of the second slide rail.

[0015] As a further supplement to this application, the inner wall of the main membrane is fixedly connected with multiple evenly distributed protrusions, the secondary membrane also adopts a hollow structure, and the lower end face of the secondary membrane is provided with secondary micropores communicating with its interior.

[0016] As a further supplement to this application, there are two hydraulic cylinders on the lower side of the mounting box, and the telescopic ends of the two hydraulic cylinders are respectively fixedly connected to the lower ends of the electrical box and the positioning box.

[0017] In summary, this application innovatively sets up a main film and a secondary film inside the greenhouse. During normal use of the greenhouse, the main film and the secondary film are in a rolled-up state. When the external sunlight is strong, the main film or the secondary film can be driven to unfold horizontally and laid in the upper part of the greenhouse, adding one or two layers of shading effect, realizing the process of light intensity regulation, providing a more suitable environment for melon cultivation, and reducing the probability of seedling scorching. During atomization cooling, the unfolded main film and the secondary film can block unevaporated water mist, making it less likely for water mist to wet the leaves of melon seedlings or be absorbed by the soil, reducing the probability of plant damping-off disease. During ventilation cooling, the unfolded main film and the secondary film isolate the upper and lower layers, achieving targeted cooling of the top of the greenhouse. In addition, when there is a large temperature difference inside the greenhouse, the gas transport through the main film and the secondary film can promote gas flow between the upper and lower layers, achieving the effect of balancing the internal temperature of the greenhouse. Attached Figure Description

[0018] Figure 1 The three-dimensional representations of the first and second embodiments of this application Figure 1 ;

[0019] Figure 2 These are partial perspective views of the first and second embodiments of this application;

[0020] Figure 3 These are partial exploded views of the first and second embodiments of this application;

[0021] Figure 4 This is a partial top surface structure diagram of the first and second embodiments of this application;

[0022] Figure 5 The three-dimensional representations of the first and second embodiments of this application Figure 2 ;

[0023] Figure 6 This is a perspective view of the winding and laying of the main film in the first and second embodiments of this application;

[0024] Figure 7 This is a perspective view of the winding section during film laying in the first and second embodiments of this application;

[0025] Figure 8 This is a front structural diagram of the first and second embodiments of this application during atomization and cooling.

[0026] Figure 9 This is a front structural diagram of the second embodiment of the present application when adjusting the upper and lower positions of the main film laying and the sub-film laying;

[0027] Figure 10 This is a front structural diagram of the second embodiment of this application during ventilation and cooling.

[0028] Figure 11 This is a perspective view of the third embodiment of this application;

[0029] Figure 12 This is a partial perspective view of the third embodiment of this application;

[0030] Figure 13 This is a partial top surface structure diagram of the third embodiment of this application during temperature equalization operation;

[0031] Figure 14 This is a perspective view of the adjustment of the upper and lower positions of the main film laying and the sub-film laying in the third embodiment of this application;

[0032] Figure 15 This is a partial front view of the main film laying and first rotating rod in the third embodiment of this application;

[0033] Figure 16 This is a front structural diagram of the third embodiment of this application during temperature equalization operation.

[0034] Explanation of the labels in the diagram:

[0035] 1. Greenhouse body, 2. Upright pole, 31. Main film laying, 3101. Horizontal channel, 3102. Main micro-hole, 3103. Protrusion, 32. First rotating rod, 33. Second rotating rod, 34. Main winding rope, 41. Secondary film laying, 4101. Longitudinal channel, 42. Third rotating rod, 43. Fourth rotating rod, 44. Secondary winding rope, 5. Installation box, 501. Electrical box, 502. Positioning box, 5021. Cavity, 6. Hydraulic cylinder, 7. Electric motor, 8. Single-port box, 801. First slide rail, 802. Second slide rail, 91. First connecting pipe, 92. Second connecting pipe, 93. Third connecting pipe. Detailed Implementation

[0036] The three embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0037] Implementation method 1:

[0038] This invention provides a greenhouse cultivation device for melon seeds. Please refer to [link / reference]. Figure 1 The system includes a greenhouse body 1, with multiple evenly distributed uprights 2 fixedly connected inside the greenhouse body 1. In practice, there are two cultivation methods after the melon seeds germinate: ground-climbing cultivation and trellis cultivation. Compared with ground-climbing cultivation, trellis cultivation has the characteristics of high planting density and low rate of rotten melons (melons are not easily in direct contact with the ground and are not easily infected by pathogens in the soil). Therefore, the uprights 2 set in this application are suitable for trellis cultivation and serve as a carrier for the melon seedlings to extend upwards. In the figure, Q refers to the soil area used for seed cultivation. The upper end of the upright 2 is fixedly connected to the top of the greenhouse body 1, and its lower end is inserted into the soil area to facilitate the climbing of the seedlings after they germinate.

[0039] Please see Figures 1 to 3 The greenhouse body 1 has a main film 31 and a secondary film 41 inside, with the main film 31 located on the upper side of the secondary film 41. The left and right sides of the main film 31 are respectively provided with a first rotating rod 32 and a second rotating rod 33. Multiple main winding ropes 34 are connected between the main film 31 and the second rotating rod 33. The left end of the main film 31 is fixedly connected to the first rotating rod 32, and the right end of the main film 31 is fixedly connected to one end of the main winding rope 34. The other end of the main winding rope 34 is fixedly connected to the second rotating rod 33 and wrapped around the outside of the second rotating rod 33. The front and rear sides of the secondary film 41 are respectively provided with a third rotating rod 42 and a fourth rotating rod 43. Multiple secondary winding ropes 44 are connected between the secondary film 41 and the fourth rotating rod 43. The front end of the secondary film 41 is fixedly connected to the third rotating rod 42, and the rear end of the secondary film 41 is fixedly connected to one end of the secondary winding rope 44. The other end of the secondary winding rope 44 is fixedly connected to the fourth rotating rod 43 and wrapped around the outside of the fourth rotating rod 43.

[0040] Please see Figure 2 and Figure 4The greenhouse body 1 has four installation boxes 5 at its four corners. The first rotating rod 32, the second rotating rod 33, the third rotating rod 42 and the fourth rotating rod 43 are located between adjacent pairs of installation boxes 5. The installation box 5 is fixedly connected to a motor 7. One end of the first rotating rod 32, the second rotating rod 33, the third rotating rod 42 and the fourth rotating rod 43 respectively movably passes through multiple installation boxes 5 and is fixedly connected to the output end of the motor 7. The other end of each of them movably passes through another installation box 5 and is rotatably connected to its interior.

[0041] When the motors 7 on both the first rotating rod 32 and the second rotating rod 33 are started, they can drive the first rotating rod 32 and the second rotating rod 33 to rotate, causing the first rotating rod 32 to wind up (or unwind) the main film 31, while the second rotating rod 33 unwinds (or winds up) the main take-up rope 34, thereby realizing the winding and unwinding process of the main film 31 (e.g., Figure 6 (As shown); When the motors 7 on the third rotating rod 42 and the fourth rotating rod 43 are started, they can drive the two to rotate. The third rotating rod 42 winds up (or unwinds) the sub-film 41, while the fourth rotating rod 43 unwinds (or winds up) the sub-winding rope 44, thereby realizing the winding and unwinding process of the sub-film 41 (as shown). Figure 7 (as shown); Therefore, when the main film 31 and the secondary film 41 are not needed, they can both be in a rolled-up state, which will not easily block the light of the melon seeds or seedlings cultivated on the lower side. This application can be used normally like an existing greenhouse.

[0042] Please see Figure 1 In this application, the multiple uprights 2 are arranged in a rectangular array, that is, along the X and Y axes, with fixed row and column spacing. To accommodate the arrangement of the uprights 2, as shown... Figure 3 and Figure 6 In this application, multiple evenly distributed transverse channels 3101 and longitudinal channels 4101 are respectively provided on the main film 31 and the sub-film 41. The transverse channels 3101 and the longitudinal channels 4101 are perpendicular to each other in space. On the X-axis, each row of uprights 2 is located inside each transverse channel 3101. On the Y-axis, each column of uprights 2 is located inside each longitudinal channel 4101. This allows the main film 31 and the sub-film 41 to smoothly carry out the winding and unwinding process without being easily blocked by the uprights 2.

[0043] Additional explanation: If the greenhouse body 1 of this application is used for ground-climbing cultivation of melons, the setting of the upright pole 2 can be cancelled. At the same time, it is also unnecessary to set the horizontal channel 3101 and the vertical channel 4101 on the main film 31 and the secondary film 41.

[0044] In this embodiment, the installation box 5 can be fixedly connected to the inner wall of the greenhouse body 1. The height of the main film 31 and the secondary film 41 is fixed. Since the melon seeds will climb along the uprights 2 after they emerge, and the height will gradually increase, the height of the installation box 5 needs to be set reasonably so that the main film 31 and the secondary film 41 are at a sufficient distance from the ground and will not easily block the climbing of the melon seedlings.

[0045] The main film 31 and the secondary film 41 are made of polyethylene film, which has high light transmittance.

[0046] The operating principles of the main film laying 31 and the secondary film laying 41 in this embodiment are as follows:

[0047] Method 1: Light Adjustment: Under normal circumstances, both the main film 31 and the secondary film 41 are rolled up, and the soil area Q and the seeds or seedlings cultivated there can receive normal light transmitted from the top of the greenhouse body 1. When there is a strong tendency for the seedlings to be scorched by the strong sunlight during the high temperature period in summer, the motor 7 can be started to drive the main film 31 or the secondary film 41 to unfold and lay on the upper side of the soil area, adding a layer of shading effect on the basis of the greenhouse body 1. When necessary, the main film 31 and the secondary film 41 can be unfolded at the same time to increase the double-layer shading effect, thereby realizing the light intensity regulation process and providing a more suitable environment for melon cultivation.

[0048] Method 2: Cooling and Isolation: Existing greenhouses are generally equipped with cooling and dehumidification devices, including ventilation devices (such as exhaust fans) and atomizing cooling devices. In this application, the atomizing cooling device is installed at the inner top of the greenhouse body 1, and the ventilation devices are distributed at the sides and top of the greenhouse body 1. When the temperature inside the greenhouse body 1 is too high and cooling is required, appropriate cooling methods can be selected according to the specific situation, including the following:

[0049] In scenario one, when the outside temperature is lower than the inside temperature (such as at night) or the humidity inside the greenhouse is high, ventilation and cooling can be performed by starting multiple ventilation devices (i.e. exhaust fans) to expel the high-temperature gas inside the greenhouse body 1 to the outside, while outside gas enters the greenhouse body 1 to achieve gas exchange and ventilation and cooling (during this process, both the main film 31 and the secondary film 41 remain rolled up).

[0050] Scenario 2: When the outside temperature is higher than the inside temperature, or when rapid and significant cooling is required, misting cooling can be used, such as... Figure 8As shown, the atomizing cooling device is activated, spraying water mist particles from top to bottom into the greenhouse body 1. Before this operation, the motor 7 can be started to drive the main film 31 and the secondary film 41 to unfold and lay on the top of the melon seedlings (represented by H in the figure) and the soil (represented by Q in the figure). Since the heat is concentrated in the inner top area of ​​the greenhouse body 1, the water mist can normally absorb the heat on the top of the main film 31 and the secondary film 41, thus quickly cooling the inner top of the greenhouse body 1. At the same time, the main film 31 and the secondary film 41 block the water mist that has not absorbed heat and evaporated, making it less likely for the water mist to wet the melon seedling leaves or be absorbed by the soil, reducing the probability of damping-off disease. Meanwhile, the exhaust fan located on the top of the main film 31 is activated to ventilate the atomizing cooling area, so that the water vapor that has absorbed heat and evaporated, as well as the water droplets intercepted on the upper surface of the main film 31, can be quickly dissipated to the outside, achieving rapid cooling.

[0051] The second implementation method:

[0052] This embodiment, based on the first embodiment, adds a hydraulic cylinder 6, a single-port box 8, a first connecting pipe 91, and a second connecting pipe 92, as detailed below: Please refer to [link / reference needed]. Figure 1 and Figure 2 Single-opening boxes 8 are fixedly connected to the four corners of the greenhouse body 1, and the opening end of the single-opening box 8 is connected to the inside of the greenhouse body 1. Multiple mounting boxes 5 extend to the inside of multiple single-opening boxes 8. A hydraulic cylinder 6 is fixedly connected to the inner bottom surface of the single-opening box 8, and the output end of the hydraulic cylinder 6 is fixedly connected to the lower end of the mounting box 5 (instead of the fixed connection between the mounting box 5 and the greenhouse body 1). This realizes the vertical adjustment of the mounting box 5, the main film 31, and the secondary film 41. Figure 3 and Figure 15 As shown, the main film 31 has a hollow structure, that is, it includes two layers of polyethylene film, and the upper end surface of the main film 31 (i.e. the upper polyethylene film) is provided with multiple main micropores 3102 that communicate with its interior. The cylindrical end of the first rotating rod 32 is fixedly connected to and communicates with the main film 31, that is, the area between the two layers of polyethylene film is connected to the first rotating rod 32. The other three end faces of the main film 31 that do not contact the first rotating rod 32 are all in a closed state.

[0053] Please see Figure 4 and Figure 5The first rotating rod 32 is rotatably connected to the end of the motor 7 connected to it, and the second connecting pipe 92 is fixedly connected to the inside of the mounting box 5. The side end of the second connecting pipe 92 is fixedly connected to the first connecting pipe 91. The side end of the single-port box 8 is provided with a first slide rail 801. The end of the first connecting pipe 91 extends out from the mounting box 5 and is slidably connected to the inside of the first slide rail 801. The first slide rail 801 is provided to facilitate the up and down movement of the first connecting pipe 91, so that the first connecting pipe 91 can adapt to the up and down movement of the mounting box 5, the main film laying 31 and the secondary film laying 41.

[0054] Compared to the first embodiment, although the above-described structure increases equipment and power costs, it also adds further benefits to the first embodiment. Those skilled in the art can selectively modify the first embodiment and this embodiment as needed. The benefits added by this embodiment include the following:

[0055] Benefit 1: Since the melon seedlings gradually climb as they grow, the hydraulic cylinder 6 allows the height of the main film-laying 31 and the first rotating rod 32 to be adjusted according to the climbing height of the seedlings. Figure 9 As shown, in the early stage of melon seedling growth, the seedlings climb to a relatively low height. Therefore, the positions of the main film 31 and the secondary film 41 can be lowered accordingly, close to the top of the seedlings. This allows for a larger atomization cooling area above the main film 31 during the atomization cooling process, improving the cooling effect. Then, the height of the main film 31 and the secondary film 41 should be raised periodically by a certain distance (generally, melon seedlings grow at a rate of 5-10 cm per week; based on this growth rate, the main film 31 and the secondary film 41 can be raised by 5 cm every 2 days; however, adjustments can be made based on the actual growth rate of the seedlings during implementation). This ensures that the main film 31 and the secondary film 41 do not obstruct the seedlings' growth.

[0056] Adding benefits, such as Figure 10As shown, when ventilation and cooling are selected, the main film 31 and the secondary film 41 can be unfolded, and the first connecting pipe 91 can be connected to an external fan. Outside air is then sequentially discharged into the high-temperature space above the main film 31 through the first rotating rod 32, the main film 31, and the main micro-hole 3102. Simultaneously, some exhaust fans at the top of the greenhouse body 1 are turned on to extract heat from the top area of ​​the greenhouse body 1 and discharge it to the outside. This combination achieves targeted and rapid cooling of the high-temperature area at the top of the greenhouse body 1. Compared to the first embodiment's overall large-scale ventilation and cooling method inside the greenhouse body 1, this embodiment effectively reduces the temperature of the secondary film 41. The airflow within the lower seedling area prevents significant changes in temperature, humidity, and soil moisture. After ventilation and cooling of the top area of ​​the greenhouse body 1, the main film 31 and the secondary film 41 are rolled up to allow air circulation between the upper and lower layers of the greenhouse body 1. The ventilated, low-temperature air from the upper layer flows to the lower seedling area, achieving indirect cooling of the lower area. Since the high temperature is mainly concentrated in the top area of ​​the greenhouse body 1, heat exchange between the cooled air from the top layer and the air from the lower layer can effectively achieve overall cooling of the interior of the greenhouse body 1, while minimizing significant changes in humidity in the seedling area and soil.

[0057] The third implementation method:

[0058] This embodiment, based on the second embodiment, divides the structure of the mounting box 5 and adds a third connecting pipe 93, as detailed below: Please refer to Figures 11 to 13 The mounting box 5 includes an electrical box 501 and a positioning box 502. The motor 7 is fixedly connected inside the electrical box 501. One end of the first rotating rod 32, the second rotating rod 33, the third rotating rod 42, and the fourth rotating rod 43 respectively movably passes through multiple electrical boxes 501 and is fixedly connected to the output end of the motor 7 (a, b, and c in the figure refer to electrical boxes 501 at different positions). The other end of each rod movably passes through multiple positioning boxes 502 and is rotatably connected to their interiors (d, e, and f in the figure refer to positioning boxes 502 at different positions). There are two hydraulic cylinders 6 on the lower side of the mounting box 5. The telescopic ends of the two hydraulic cylinders 6 are fixedly connected to the lower ends of the electrical box 501 and the positioning box 502 respectively.

[0059] The first connecting pipe 91 and the second connecting pipe 92 are both connected to the corresponding positioning box 502. The positioning box 502, which is connected to the third rotating rod 42, has a cavity 5021 inside. The end of the third rotating rod 42 communicates with the cavity 5021. Figure 13 and Figure 14As shown, the side end of the positioning box 502 is fixedly connected to a third pipe 93 that communicates with the cavity 5021. The side end of the single-port box 8 corresponding to the position of the third pipe 93 is provided with a second slide rail 802. The third pipe 93 is slidably connected to the inside of the second slide rail 802. Gas can be input into the third rotating rod 42 through the third pipe 93 and the cavity 5021.

[0060] Please see Figure 15 The inner wall of the main membrane 31 is fixedly connected with multiple evenly distributed protrusions 3103. The protrusions 3103 can be made of acrylic material to facilitate light transmission and ensure the application of the main membrane 31 in the process of light adjustment. The protrusions 3103 keep the upper and lower polyethylene films separated, which facilitates the entry of gas into the interior of the main membrane 31 through the main micropores 3102. The secondary membrane 41 also adopts a hollow structure, and the lower end face of the secondary membrane 41 is provided with secondary micropores that communicate with its interior. The secondary micropores are used for exhaust.

[0061] Compared to the second embodiment, although the above-described structure increases equipment and electricity costs, it also adds further benefits to the second embodiment. Those skilled in the art can selectively configure the first, second, and this embodiments as needed. The benefits added in this embodiment include the following: In practice, heat tends to accumulate in the top area of ​​the greenhouse body 1, causing uneven temperatures between the upper and lower layers, which can easily lead to high-temperature scorching of the seedlings. Therefore, in this embodiment, the following temperature equalization operation can be performed periodically:

[0062] Step 1, please refer to Figure 14 First, multiple hydraulic cylinders 6 are started, which drive a pair of electrical boxes 501 and a pair of positioning boxes 502 connected to the first rotating rod 32 and the second rotating rod 33 to move upward, and drive a pair of electrical boxes 501 and a pair of positioning boxes 502 connected to the third rotating rod 42 and the fourth rotating rod 43 to move downward, so that the main film 31 in the winding state moves upward until it is close to the top plate area of ​​the single-mouth box 8, and the secondary film 41 in the winding state moves downward until it is close to the top area of ​​the melon seedling. The main film 31 and the secondary film 41 move away from each other vertically. Then the motor 7 is started, which drives the main film 31 and the secondary film 41 to unwind and unfold.

[0063] Step Two, please refer to Figure 13 Select an external air pump (represented by M in the diagram), connect the air pump's inlet to the first connecting pipe 91 via a hose, and connect the air pump's outlet to the third connecting pipe 93 via another hose. Figure 16As shown, the air pump is started to create a negative pressure inside the main film 31 and the first rotating rod 32, so that the hot air in the top area of ​​the greenhouse body 1 enters the main film 31 through the main micro-hole 3102 to extract the hot air. Then the air pump discharges the hot air into the lower area where the melon seedlings are located through the third rotating rod 42 and the secondary film 41, thereby realizing the rapid flow of air between the upper and lower layers of the greenhouse body 1, which has the effect of balancing the internal temperature of the greenhouse body 1 and reducing the adverse effects of uneven temperature on the growth of melon seedlings.

[0064] Step 3: After starting the air pump for a period of time (such as half an hour), turn off the air pump, disassemble the hose, and then roll up the main film 31 and the secondary film 41.

[0065] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A greenhouse cultivation device for melon seeds, comprising a greenhouse body (1), wherein a plurality of evenly distributed uprights (2) are fixedly connected inside the greenhouse body (1), characterized in that: The greenhouse body (1) has a main film (31) and a secondary film (41) inside, with the main film (31) located above the secondary film (41). The main film (31) has a first rotating rod (32) and a second rotating rod (33) on its left and right sides respectively. Multiple main winding ropes (34) connect the main film (31) and the second rotating rod (33). The secondary film (41) has a third rotating rod (42) and a fourth rotating rod (43) on its front and rear sides respectively. Multiple secondary winding ropes (44) connect the secondary film (41) and the fourth rotating rod (43). The greenhouse body (1) contains... Mounting boxes (5) are provided at the four corners of the part. The first rotating rod (32), the second rotating rod (33), the third rotating rod (42) and the fourth rotating rod (43) are respectively located between a pair of adjacent mounting boxes (5). The motor (7) is fixedly connected inside the mounting box (5). One end of the first rotating rod (32), the second rotating rod (33), the third rotating rod (42) and the fourth rotating rod (43) respectively movably passes through multiple mounting boxes (5) and is fixedly connected to the output end of the motor (7). The other end of each rod movably passes through another mounting box (5) and is rotatably connected to the inside of the mounting box (5). The main membrane (31) and the secondary membrane (41) are respectively provided with a plurality of uniformly distributed transverse channels (3101) and longitudinal channels (4101), and the transverse channels (3101) and longitudinal channels (4101) are perpendicular to each other in space. The main membrane (31) has a hollow structure, and the upper end face of the main membrane (31) is provided with a plurality of main micropores (3102) communicating with its interior. The cylindrical end of the first rotating rod (32) is fixedly connected to and communicates with the main membrane (31). The inner wall of the main membrane (31) is fixedly connected with a plurality of uniformly distributed protrusions (3103). The secondary membrane (41) also adopts a hollow structure, and the lower end face of the secondary membrane (41) is provided with secondary micropores communicating with its interior.

2. The greenhouse cultivation device for melon seeds according to claim 1, characterized in that: The left end of the main film laying (31) is fixedly connected to the first rotating rod (32), the right end of the main film laying (31) is fixedly connected to one end of the main take-up rope (34), the other end of the main take-up rope (34) is fixedly connected to the second rotating rod (33) and wrapped around the outside of the second rotating rod (33), the front end of the secondary film laying (41) is fixedly connected to the third rotating rod (42), the rear end of the secondary film laying (41) is fixedly connected to one end of the secondary take-up rope (44), and the other end of the secondary take-up rope (44) is fixedly connected to the fourth rotating rod (43) and wrapped around the outside of the fourth rotating rod (43).

3. The greenhouse cultivation device for melon seeds according to claim 1, characterized in that: Each of the four corners of the greenhouse body (1) is fixedly connected to a single-mouth box (8), and the opening end of the single-mouth box (8) is connected to the inside of the greenhouse body (1). Multiple installation boxes (5) extend to the inside of multiple single-mouth boxes (8). A hydraulic cylinder (6) is fixedly connected to the bottom surface of the single-mouth box (8), and the output end of the hydraulic cylinder (6) is fixedly connected to the lower end of the installation box (5).

4. The muskmelon seed greenhouse cultivation device according to claim 3, characterized in that: The first rotating rod (32) is rotatably connected to a second connecting pipe (92) at the end away from the motor (7). The second connecting pipe (92) is fixedly connected to the inside of the mounting box (5). The side end of the second connecting pipe (92) is fixedly connected to a first connecting pipe (91). The side end of the single-port box (8) is provided with a first slide rail (801). The end of the first connecting pipe (91) extends out from the mounting box (5) and is slidably connected to the inside of the first slide rail (801).

5. The greenhouse cultivation device for melon seeds according to claim 4, characterized in that: The mounting box (5) includes an electrical box (501) and a positioning box (502). The motor (7) is fixedly connected inside the electrical box (501). One end of the first rotating rod (32), the second rotating rod (33), the third rotating rod (42) and the fourth rotating rod (43) respectively movably passes through multiple electrical boxes (501) and is fixedly connected to the output end of the motor (7). The other end of each of them movably passes through multiple positioning boxes (502) and is rotatably connected to their interiors.

6. The melon seed greenhouse cultivation device according to claim 5, characterized in that: The first connecting pipe (91) and the second connecting pipe (92) are both connected to the corresponding positioning box (502). The positioning box (502) connected to the third rotating rod (42) has a cavity (5021) inside. The end of the third rotating rod (42) is connected to the cavity (5021). The side end of the positioning box (502) is fixedly connected to the third connecting pipe (93) which is connected to the cavity (5021). The side end of the single-port box (8) corresponding to the position of the third connecting pipe (93) has a second slide (802). The third connecting pipe (93) is slidably connected to the inside of the second slide (802).

7. A greenhouse cultivation device for melon seeds according to claim 6, characterized in that: The number of hydraulic cylinders (6) on the lower side of the mounting box (5) is two, and the telescopic ends of the two hydraulic cylinders (6) are respectively fixedly connected to the lower ends of the electrical box (501) and the positioning box (502).

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