Water-saving irrigation device for sweet potato cultivation and cultivation method

Abstract

The invention relates to the technical field of sweet potato planting, and discloses a sweet potato cultivation water-saving irrigation device and a cultivation method. A water inlet of the water supply pump is communicated with the tank body; the side edges of the two side plates are hinged to each other, the hinged ends of the two side plates are hinged to the inner side wall of the tank body in the length direction of the tank body, and permeable meshes are formed in the two side plates; the two irrigation pipes are arranged on the opposite sides of the two side plates in the length direction of the side plates correspondingly, and the two irrigation pipes communicate with a water outlet of a water supply pump. The two pairs of connecting rods are hinged to the ends, away from the hinged ends, of the two side plates correspondingly, and each pair of connecting rods are distributed on the two sides of the ends, away from the hinged ends, of the side plates. According to the water-saving irrigation device for sweet potato cultivation, the irrigation frequency can be reduced under the conditions that the growth vigor of sweet potatoes is guaranteed and water is saved, and the problem that the sweet potato harvesting speed is low is solved.

Description

Technical Field

[0001] The invention relates to the technical field of sweet potato planting, and in particular to a sweet potato cultivation water-saving irrigation device and a cultivation method. Background Art

[0002] Sweet potatoes are both food crops and cash crops, and are widely grown around the world. Soil moisture is closely related to sweet potato growth, especially early soil drought (water content below 60%) has a more obvious impact on tuber yield and commercial quality. In particular, northern my country is prone to continuous drought in spring and winter.

[0003] The traditional spring ditch flooding method for sweet potato planting wastes a lot of water resources and is no longer suitable for the development requirements of sweet potato producing areas. This requires artificial control of the water environment during sweet potato production to save water to the greatest extent while ensuring production. Therefore, seeking a new water-saving planting model has become one of the technical ways to develop water-saving, high-yield, and high-efficiency agriculture in the region.

[0004] For this reason, some sweet potato cultivation water-saving irrigation devices have appeared in the prior art to adapt to the new agricultural development needs in northern my country. By setting a planting trough and matching an irrigation pipe, the planting trough can prevent water loss and irrigate the sweet potato by a small amount of multiple irrigation or drip irrigation. Although this sweet potato cultivation water-saving irrigation device can realize artificial control of the water environment and can maximize water-saving planting while ensuring the yield, since the sweet potato is planted in the planting trough, it is impossible to use mechanical equipment to harvest the sweet potato, which is extremely inconvenient for the harvest of the sweet potato. Summary of the invention

[0005] The present invention provides a sweet potato cultivation water-saving irrigation device to solve the deficiencies in the above-mentioned prior art. The sweet potato cultivation water-saving irrigation device can realize quick harvesting of sweet potatoes in a planting trough.

[0006] The technical solution of the present invention is: a sweet potato cultivation water-saving irrigation device, comprising:

[0007] The trough body is rectangular;

[0008] Two side panels, whose sides are hinged to each other, the hinged ends of the two side panels are hinged to the inner side wall of the trough body along the length direction of the trough body, and the two side panels are provided with water-permeable mesh holes; the two side panels are used to form a V-shaped planting space;

[0009] Two pairs of connecting rods are respectively hinged at one end of the two side panels away from the hinged end, and each pair of connecting rods is distributed on both sides of one end of the side panel away from the hinged end;

[0010] The lifting part is hinged with the two pairs of connecting rods, and is used to pull the two side plates to deflect around the hinges for multiple times through the two pairs of connecting rods, so as to make the soil in the V-shaped planting space loose.

[0011] In at least one embodiment of the present invention, the lifting part is provided with two groups, and the two groups of the lifting parts are respectively connected to the two connecting rods on both sides of the two side plates, and the lifting part includes:

[0012] A mounting plate is longitudinally arranged on the top side of the trough body, a longitudinal groove is arranged on the side wall of the mounting plate facing the middle of the trough body, and a plurality of longitudinally distributed circular grooves are arranged on both inner walls of the longitudinal groove;

[0013] A sliding block is longitudinally slidably connected in the longitudinal groove, mounting grooves are provided on both sides of the sliding block, spherical top blocks matching with the circular grooves are provided in the two mounting grooves, a first spring is provided between the spherical top blocks in the mounting grooves and the bottom of the mounting grooves, and a connecting groove is provided on the side wall of the sliding block facing the middle of the groove body;

[0014] A connecting plate is arranged in the connecting groove, the top and bottom of the connecting plate are provided with a second spring connected to the inner wall of the connecting groove, and two connecting rods on the same side of the two side plates are hinged to the side of the connecting plate;

[0015] The lifting member is arranged on the mounting plate and is connected with the sliding block.

[0016] In at least one embodiment of the present invention, a cutting assembly is further included, and the cutting assembly includes:

[0017] Two racks are respectively arranged on one side of the two side plates away from the hinged end;

[0018] A carrier plate, provided with two of the side plates, and provided with two mounting holes;

[0019] Two gears are respectively connected to the two mounting holes, the two gears are respectively meshed with the two racks, and the sides of the two gears are provided with end face gears.

[0020] Two rotating shafts are respectively arranged on the sides of the mounting holes at the bottom of the carrier plate, the two rotating shafts are rotatably connected to the carrier plate, the two rotating shafts are both provided with an outer tooth ring meshing with the end face teeth, and the two rotating shafts are both provided with a sprocket;

[0021] The chain is sleeved on the two sprocket wheels, and the outer peripheral side of the chain is provided with cutting teeth.

[0022] In at least one embodiment of the present invention, protective nets are provided on both sides of the two side panels close to the hinged ends, the protective nets are made of flexible material, and the two side panels and the two protective nets together constitute a planting trough.

[0023] In at least one embodiment of the present invention, when the sliding block is located at the upper limit position, the two racks are in a horizontal state.

[0024] In at least one embodiment of the present invention, a longitudinal sliding groove is relatively arranged in the connecting groove of the sliding block, and a sliding block matching with the sliding groove is arranged on the side wall of the connecting plate.

[0025] In at least one embodiment of the present invention, the lifting member includes: a screw and a driving member, the screw is longitudinally rotatably connected in the longitudinal groove, the sliding block is threadedly connected to the screw, the top of the screw passes through the mounting plate, and the driving member is connected to the screw.

[0026] In at least one embodiment of the present invention, irrigation pipes are respectively provided on one side of the two side plates along the length direction of the side plates, and a plurality of nozzles are evenly arranged on the two irrigation pipes. Two water supply pumps are provided at the middle position of the inner wall of the trough body, and the water inlets of the two water supply pumps are located in the trough body. The middle positions of the two irrigation pipes are connected to the water outlets of the water supply pumps through hoses, and the bottom of the trough body is an inclined surface inclined toward the middle position.

[0027] The present invention also provides a sweet potato cultivation method, comprising the following steps:

[0028] The two pairs of connecting rods are driven upward by the lifting part so that the two side plates and the trough body form a planting trough;

[0029] Fill the planting troughs with planting soil and plant the sweet potatoes;

[0030] When the sweet potatoes are harvested, the stems and leaves of the sweet potatoes are first removed, and the two pairs of connecting rods are driven by the lifting part to move up and down for multiple times, so that the two pairs of connecting rods drive the two side plates to move until the planting soil between the two side plates is loose, and then the sweet potatoes are harvested.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The present invention forms a V-shaped planting trough hinged in the trough body through two side plates and two protective plates, and connects the two side plates with the lifting member through two connecting rods. When the sweet potatoes are harvested, the lifting member drives the side plates to move through the connecting rods, so that the side plates vibrate, and then the planting soil in the planting trough is shaken into a loose state, which is convenient for the rapid harvest of the sweet potatoes and improves the harvesting efficiency of the sweet potatoes;

[0033] 2. The present invention provides a cutting assembly, which can quickly cut and remove the stems and leaves of the sweet potatoes when the sweet potatoes are harvested, thereby facilitating the harvest of the sweet potatoes and further improving the harvesting efficiency of the sweet potatoes;

[0034] 3. The present invention provides a water supply pump, a trough body and an irrigation pipe. During the sweet potato planting and growth process, the trough body can be used as a container for storing irrigation water for the sweet potatoes. The water supply pump can extract water from the trough body and irrigate the sweet potatoes through the irrigation pipe. During the irrigation process, excess water will flow back into the trough body, thereby avoiding the waste of water resources. During each irrigation process, sufficient moisture can be retained in the planting soil. While ensuring the growth of the sweet potatoes, the number of irrigation times is reduced, making the sweet potato cultivation water-saving irrigation device easy to maintain during the growth cycle of the sweet potatoes. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the main cross-sectional structure of the present invention;

[0036] Figure 2 It is a schematic diagram of the side cross-sectional structure of the present invention;

[0037] Figure 3 It is a schematic diagram of the partial structure of the main cross-section of the present invention;

[0038] Figure 4 It is a schematic diagram of a partial structure of the side cross-section of the present invention;

[0039] Figure 5 It is a schematic diagram of the top view structure of the present invention;

[0040] Figure 6 It is a schematic diagram of a partial structure viewed from above of the present invention.

[0041] Description of reference numerals:

[0042] 1. Water supply pump; 2. trough body; 3. side plate; 31. protective net; 4. irrigation pipe; 5. connecting rod; 6. lifting part; 61. mounting plate; 611. longitudinal groove; 62. sliding block; 621. spherical top block; 622. connecting groove; 63. connecting plate; 64. lifting part; 641. lead screw; 642. driving part; 7. cutting assembly; 71. rack; 72. carrier plate; 721. mounting hole; 73. gear; 731. end face tooth; 74. rotating shaft; 741. outer gear ring; 75. chain. DETAILED DESCRIPTION

[0043] The drawings in the present invention are not drawn strictly according to the actual scale, and the specific size and quantity of each structure can be determined according to actual needs. The drawings described in the present invention are only schematic diagrams of the structures.

[0044] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The words "include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Inside", "outside", "up", "down", "far", "near", "front", "back" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0046] Some sweet potato cultivation water-saving irrigation devices have appeared in the prior art to adapt to the new model of agricultural development in northern my country. By setting a planting trough and matching it with an irrigation pipe, the planting trough can prevent water loss and irrigate the sweet potato by a small amount of multiple irrigation or drip irrigation. Although this sweet potato cultivation water-saving irrigation device can realize artificial control of the water environment and can save water to the greatest extent while ensuring the yield, such irrigation and planting methods require frequent checks on the soil moisture and timely irrigation in order to ensure the growth of the sweet potato. There are many irrigations in the whole sweet potato planting process, and since the sweet potato is planted in the planting trough, it is impossible to use large-scale machinery to harvest the sweet potato, which is extremely inconvenient for the harvest of the sweet potato.

[0047] In view of this, the present invention proposes a sweet potato cultivation water-saving irrigation device, which can reduce the irrigation frequency and achieve rapid harvest of sweet potatoes while ensuring the growth of sweet potatoes and saving water.

[0048] Combination Figures 1 to 6 As shown, a sweet potato cultivation water-saving irrigation device includes a water supply pump 1 and also includes:

[0049] The trough body 2 is rectangular; the trough body 2 is also used to hold irrigation water;

[0050] The sides of the two side panels 3 are hinged to each other, and the hinged ends of the two side panels 3 are hinged to the inner side wall of the trough body 2 along the length direction of the trough body 2. The two side panels 3 are provided with water-permeable mesh holes; the two side panels 3 are used to form a V-shaped planting space;

[0051] Two pairs of connecting rods 5 are respectively hinged at one end of the two side panels 3 away from the hinged end, and each pair of connecting rods 5 is distributed on both sides of one end of the side panel 3 away from the hinged end;

[0052] The lifting part 6 is hinged with the two pairs of connecting rods 5. The lifting part 6 is used to pull the two side panels 3 to deflect around the hinges multiple times through the two pairs of connecting rods 5, so as to loosen the soil in the V-shaped planting space to facilitate the harvesting of sweet potatoes.

[0053] As an alternative embodiment, the lifting part 6 is provided with two groups, and the two groups of lifting parts 6 are respectively connected to the two connecting rods 5 on both sides of the two side plates 3, and the lifting part 6 includes:

[0054] The mounting plate 61 is longitudinally arranged on the top side of the tank body 1, and a longitudinal groove 611 is arranged on the side wall of the mounting plate 61 facing the middle of the tank body 2, and a plurality of longitudinally distributed circular grooves are arranged on both inner walls of the longitudinal groove 611; the spacing between the plurality of circular grooves on the same side is equal;

[0055] The sliding block 62 is longitudinally slidably connected in the longitudinal groove 611. Mounting grooves are provided on both sides of the sliding block 62. Spherical top blocks 621 matching the circular grooves are provided in the two mounting grooves. A first spring is provided between the spherical top block 621 in the mounting groove and the bottom of the mounting groove. A connecting groove 622 is provided on the side wall of the sliding block 62 facing the middle of the groove body 2.

[0056] The connecting plate 63 is arranged in the connecting groove 622, and the top and bottom of the connecting plate 63 are provided with a second spring connected to the inner wall of the connecting groove 622, and the two connecting rods 5 on the same side of the two side plates 3 are hinged to the side of the connecting plate 63;

[0057] The lifting member 64 is disposed on the mounting plate 61, and the lifting member 64 is connected to the sliding block 62, and the lifting member 64 is used to drive the sliding block 62 to move up and down;

[0058] When the lifting member 64 drives the sliding block 62 to move up and down in the longitudinal groove 611, the lifting member 64 drives the movable block 62 to move at a uniform speed, and the sliding block 62 intermittently pauses under the action of the spherical top block 621 and the circular groove. During the intermittent pause of the movable block 62, the connecting plate 63 moves up and down in the connecting groove 622 under the action of the second spring, so that the connecting plate 63 pulls the two side plates 3 to vibrate through the connecting rod 5, so that the soil between the two side plates 3 quickly becomes loose, so as to facilitate the rapid sweet potato harvesting.

[0059] As an alternative embodiment, a cutting assembly 7 is also included. Specifically, the cutting assembly 7 includes:

[0060] The two racks 71 are respectively arranged on one side of the two side panels 3 away from the hinged end, and the racks 71 are fixedly connected to the side panels 3;

[0061] The carrier plate 72 is disposed on the two side plates 3, and two mounting holes 721 are provided on the carrier plate 72; the carrier plate 72 is overlapped on the two side plates 3; handles are provided on both sides of the carrier plate 72;

[0062] The two gears 73 are rotatably connected to the two mounting holes 721 respectively, and the two gears 73 are meshed with the two racks 71 respectively. The side surfaces of the two gears 73 are provided with end face teeth 731, and the end face teeth 731 are ring-shaped;

[0063] The two rotating shafts 74 are respectively arranged on the sides of the mounting holes 721 at the bottom of the carrier plate 72, and the two rotating shafts 74 are rotatably connected to the carrier plate 72. The two rotating shafts 74 are both provided with outer tooth rings 741 meshing with the end face teeth 731, and the two rotating shafts 74 are both provided with sprockets;

[0064] The chain 75 is sleeved on the two sprockets, and a plurality of cutting teeth are evenly arranged on the outer peripheral side of the chain 75. The cutting teeth are used to cut the stems and leaves of the mature sweet potatoes so as to quickly harvest the sweet potatoes.

[0065] As an alternative embodiment, protective nets 31 are provided on both sides of the two side panels 3 near the hinged ends, and the protective nets 31 are made of flexible material; the protective nets 31 are used to hold the soil between the side panels 3 to prevent the planting soil between the side panels 3 from flowing out from the edges of the two sides of the side panels 3, and the two side panels 3 and the two protective nets 31 together constitute a planting trough.

[0066] As an alternative embodiment, when the sliding block 62 is located at the upper limit position, the two racks 71 are in a horizontal state; in this state, it is convenient to install the cutting assembly 3 so that the gear 73 and the rack 71 are fully meshed.

[0067] As an alternative embodiment, a longitudinal slide groove is relatively provided in the connecting groove 622 of the sliding block 62, and a sliding block matching the slide groove is provided on the side wall of the connecting plate 63; the setting of the above-mentioned slide groove and sliding block can limit the connecting plate 63 to move up and down only in the connecting groove 62, while ensuring the stability of the device structure.

[0068] As an alternative embodiment, the lifting member 64 includes: a screw 641 and a driving member 642. The screw 641 is longitudinally rotatably connected in the longitudinal groove 611, the sliding block 62 is threadedly connected to the screw 641, the top of the screw 641 passes through the mounting plate 61, and the driving member 642 is connected to the screw 641. The driving member 642 is a rotating handle connected to the screw 641. The specific driving member 642 can be the rotating handle given in this embodiment, or a driving motor can be used. The driving method of using a rotating handle makes the production cost of the device lower.

[0069] As an alternative embodiment, irrigation pipes 4 are respectively provided on one side of the two side panels 3 along the length direction of the side panels 3, and multiple nozzles are evenly arranged on the two irrigation pipes 4. The arrangement of multiple nozzles can enable the sweet potatoes to be quickly, evenly and fully irrigated. Two water supply pumps 1 are provided at the middle position of the inner wall of the trough body 2. The water supply pump 1 is used to pump water out of the trough body 2. The water inlets of the two water supply pumps 1 are located in the trough body 2. The middle positions of the two irrigation pipes 4 are connected to the water outlets of the water supply pumps 1 through hoses. The bottom of the trough body 2 is an inclined surface inclined toward the middle position. The inclined arrangement of the bottom of the trough body 2 can make the irrigation water gather here to facilitate the water supply pump 1 to pump water.

[0070] The present invention also provides a sweet potato cultivation method, comprising the following steps:

[0071] The two pairs of connecting rods 5 are driven upward by the lifting part 6 so that the two side plates 3 and the trough body 2 form a planting trough; then the planting trough is filled with planting soil and sweet potatoes are planted;

[0072] Fill the tank 2 with irrigation water, and according to the growth of the sweet potato, pump the water in the tank 2 into the irrigation pipe 4 through the water supply pump 1, and evenly distribute the water in the planting soil through the irrigation pipe 4, and the excess water will flow back to the tank 2 through the permeable mesh;

[0073] When the sweet potatoes are harvested, the cutting assembly 7 is installed above the two side plates 3, so that the two gears 73 are meshed with the racks 71, and the two harvesters hold the handles on both sides of the carrier plate 72 and push the carrier plate 72 to make the two gears 73 slide on the racks 71, and the gear 73 drives the rotating shaft 74 to rotate through the meshing of the end teeth 731 and the outer gear ring 741, so that the two rotating shafts 74 drive the sprockets to rotate, and the stems and leaves of the sweet potatoes are cut off by the chain 75 with cutting teeth installed on the sprocket, and then the two pairs of the connecting rods 5 are driven by the lifting part 6 to move up and down for multiple times, so that the two pairs of the connecting rods 5 drive the two side plates 3 to move until the planting soil between the two side plates 3 is loose, and then the sweet potatoes are harvested;

[0074] Repeat the above steps to enter the next round of sweet potato planting.

[0075] The above embodiments are only specific implementation methods of the patent of the present invention, which are used to illustrate the technical solution of the patent of the present invention rather than to limit it. The protection scope of the patent of the present invention is not limited thereto. Although the patent of the present invention is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that any technician familiar with the technical field can still modify the technical solution recorded in the above embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution for implementing the patent of the present invention, and should be covered within the protection scope of the present invention.

Claims

1. A water-saving irrigation device for sweet potato cultivation, characterized in that: include: The tank body (2) is rectangular; Two side panels (3), the sides of which are hinged to each other, the hinged ends of the two side panels (3) are hinged to the inner side wall of the trough body (2) along the length direction of the trough body (2), and the two side panels (3) are both provided with water-permeable mesh holes; the two side panels (3) are used to form a V-shaped planting space; Two pairs of connecting rods (5) are respectively hinged to one end of the two side panels (3) away from the hinged end, and each pair of connecting rods (5) is distributed on both sides of one end of the side panel (3) away from the hinged end; The lifting part (6) is hinged to the two pairs of connecting rods (5), and the lifting part (6) is used to pull the two side plates (3) multiple times through the two pairs of connecting rods (5) to deflect around the hinge, so that the soil in the V-shaped planting space is loose.

2. A sweet potato cultivation water-saving irrigation device as claimed in claim 1, characterized in that: The lifting parts (6) are provided with two groups, and the two groups of the lifting parts (6) are respectively connected to the two connecting rods (5) on both sides of the two side plates (3), and the lifting parts (6) include: A mounting plate (61) is longitudinally arranged on the top side of the tank body (1), a longitudinal groove (611) is provided on the side wall of the mounting plate (61) facing the middle of the tank body (2), and a plurality of longitudinally distributed circular grooves are provided on both inner walls of the longitudinal groove (611); A sliding block (62) is longitudinally slidably connected in the longitudinal groove (611), and mounting grooves are provided on both sides of the sliding block (62). Spherical top blocks (621) matching with the circular grooves are provided in the two mounting grooves, and a first spring is provided between the spherical top blocks (621) in the mounting grooves and the bottom of the mounting grooves. A connecting groove (622) is provided on the side wall of the sliding block (62) facing the middle of the groove body (2); A connecting plate (63) is arranged in the connecting groove (622), and a second spring connected to the inner wall of the connecting groove (622) is arranged at the top and bottom of the connecting plate (63); two connecting rods (5) on the same side of the two side plates (3) are hinged to the side of the connecting plate (63); The lifting member (64) is arranged on the mounting plate (61), and the lifting member (64) is connected to the sliding block (62).

3. A sweet potato cultivation water-saving irrigation device as claimed in claim 2, characterized in that: It also includes a cutting assembly (7), the cutting assembly (7) comprising: Two racks (71) are respectively arranged on one side of the two side plates (3) away from the hinged end; A carrier plate (72) is disposed on the two side plates (3), and two mounting holes (721) are provided on the carrier plate (72); Two gears (73) are rotatably connected to the two mounting holes (721), the two gears (73) are respectively meshed with the two racks (71), and the sides of the two gears (73) are provided with end face teeth (731). Two rotating shafts (74) are respectively arranged on the sides of the mounting hole (721) at the bottom of the carrier plate (72), the two rotating shafts (74) are rotatably connected to the carrier plate (72), the two rotating shafts (74) are both provided with an outer tooth ring (741) meshing with the end face teeth (731), and the two rotating shafts (74) are both provided with a sprocket; A chain (75) is sleeved on the two sprocket wheels, and cutting teeth are arranged on the outer peripheral side of the chain (75).

4. A sweet potato cultivation water-saving irrigation device as claimed in claim 1, characterized in that: Protective nets (31) are provided on both sides of the two side panels (3) close to the hinged ends. The protective nets (31) are made of a flexible material. The two side panels (3) and the two protective nets (31) together form a planting trough.

5. A water-saving irrigation device for sweet potato cultivation as claimed in claim 3, characterized in that: When the sliding block (62) is located at the upper limit position, the two racks (71) are in a horizontal state.

6. A sweet potato cultivation water-saving irrigation device as claimed in claim 2, characterized in that: A longitudinal sliding groove is relatively arranged in the connecting groove (622) of the sliding block (62), and a sliding block matching with the sliding groove is arranged on the side wall of the connecting plate (63).

7. A sweet potato cultivation water-saving irrigation device as claimed in claim 2, characterized in that: The lifting member (64) comprises: a lead screw (641) and a driving member (642); the lead screw (641) is longitudinally rotatably connected in the longitudinal groove (611); the sliding block (62) is threadedly connected to the lead screw (641); the top of the lead screw (641) passes through the mounting plate (61); and the driving member (642) is connected to the lead screw (641).

8. The water-saving irrigation device for sweet potato cultivation as claimed in claim 1, characterized in that: An irrigation pipe (4) is respectively provided on one side of the two side plates (3) along the length direction of the side plates (3), and a plurality of nozzles are evenly arranged on the two irrigation pipes (4). Two water supply pumps (1) are provided at the middle position of the inner wall of the trough body (2), and the water inlets of the two water supply pumps (1) are located in the trough body (2). The middle positions of the two irrigation pipes (4) are connected to the water outlet of the water supply pump (1) through a hose, and the bottom of the trough body (2) is an inclined surface inclined toward the middle position.

9. A sweet potato cultivation method, based on the sweet potato cultivation water-saving irrigation device according to claim 1, characterized in that: The following steps are involved: The two pairs of connecting rods (5) are driven to move upward by the lifting part (6), so that the two side plates (3) and the trough body (2) form a V-shaped planting space; Fill the V-shaped planting space with planting soil and plant sweet potatoes; When the sweet potatoes are harvested, the stems and leaves of the sweet potatoes are first removed, and the lifting part (6) drives the two pairs of connecting rods (5) to move up and down multiple times, so that the two pairs of connecting rods (5) drive the two side plates (3) to move until the planting soil between the two side plates (3) becomes loose, and then the sweet potatoes are harvested.

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