A salt and alkali resisting device suitable for saline and alkaline soil

Abstract

The present application relates to the technical field of soil remediation, and particularly relates to a salt and alkali resisting and reducing equipment suitable for saline and alkaline soil, which comprises a mounting frame, a feeding assembly mounted on the mounting frame, a power assembly, the power assembly connected to the mounting frame, a soil separating plate connected to the power assembly and in a hollow shape, a conveying assembly for continuously conveying salt separating layer materials connected to the soil separating plate, a guide plate arranged on each side of the soil separating plate, a mounting cylinder fixedly connected to the lower part of the soil separating plate, and two outer arc plates in symmetrical distribution rotatably connected to the mounting cylinder. The two outer arc plates are pushed by two connecting rods to expand to opposite sides with the mounting cylinder as the center, and change from a combined shape to an acute angle shape, so as to push the powdery soil on the outer sides of the two outer arc plates to the two sides. At the same time, the two outer arc plates move out of the fan-shaped grooves with corresponding fan-shaped springs, so that the expanded outer arc plates and the fan-shaped springs separate a space for laying corn stalks at the lower part of the ploughing layer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of soil remediation, in particular to a salt-resistant and alkali-reducing equipment suitable for saline-alkali soil. BACKGROUND

[0002] The core feature of saline-alkali soil is the excessive accumulation of soluble salts and alkaline substances in the soil, forming a harsh environment that is not conducive to plant growth. Among them, high concentration of soluble salts significantly increases the osmotic pressure of soil solution, making it difficult for plant roots to normally absorb water and nutrients, causing "physiological drought", even if the soil water content is acceptable, the plant still shows symptoms of water deficiency. At the same time, excessive salt ions (such as Na⁺ and Cl⁻) can directly enter the plant body, have a toxic effect on root cells, interfere with enzyme activity and metabolic processes, inhibit root development, and in severe cases, cause root browning, rotting and even plant death.

[0003] More seriously, the large amount of sodium ions present in saline-alkali soil has strong exchange ability and can replace the divalent cations such as calcium and magnesium on the surface of soil colloids to form aggregates. This process destroys the aggregate structure of the soil, leading to soil particle dispersion and reduced porosity, and further causing surface hardening and structural densification. The deterioration of soil physical properties significantly weakens its air permeability and drainage capacity, and the root system is blocked from breathing due to lack of oxygen, further inhibiting plant growth.

[0004] Due to the large amount of salt attached to the surface of the soil, after the saline-alkali soil is treated by conventional deep plowing, the salt on the surface of the soil will be dispersed in the soil, causing the salt in the soil to need a long time to settle. In the prior art, the plowing layer of the saline-alkali soil is broken up by a spiral deep plowing machine, and a large amount of modifier is continuously added to the broken soil for a long time to decompose the salt in the soil. However, the salt in the soil below the plowing layer will migrate to the surface as the water evaporates, causing the salt in the plowing layer to gradually increase, resulting in the soil being re-salinized. This not only takes a long time and costs a lot, but also seriously affects the subsequent use of the soil. SUMMARY

[0005] In order to overcome the shortcoming that the salt in the soil below the plowing layer will migrate to the surface as the water evaporates, causing the soil to be re-salinized, the present application provides a salt-resistant and alkali-reducing equipment suitable for saline-alkali soil.

[0006] The technical solution of the present invention is as follows: a salt-blocking and alkali-reducing device suitable for saline-alkali soil, comprising an installation frame and a feeding assembly mounted on the installation frame; further comprising a power assembly; the power assembly is connected to the installation frame; a soil dividing plate is connected to the power assembly, and the soil dividing plate is hollow; a conveying assembly for continuously conveying salt-blocking layer material is connected to the soil dividing plate; a guide plate is provided on each side of the soil dividing plate; an installation cylinder is fixedly connected to the lower part of the soil dividing plate; two symmetrically distributed outer arc plates are rotatably connected inside the installation cylinder; an unfolding assembly for pushing the outer arc plates to rotate is connected inside the installation cylinder, and the unfolding assembly is connected to the two outer arc plates; a fan-shaped groove is opened at the front and rear of the soil dividing plate; a fan-shaped spring piece fixedly connected to the outer arc plate is slidably connected in each fan-shaped groove; a stop bar is provided on each fan-shaped spring piece, and the stop bar is located in the fan-shaped groove; a spiral deep tillage mechanism is provided on the installation frame, and the spiral deep tillage mechanism is located below the conveying assembly; the power assembly is used to drive the soil dividing plate to rotate.

[0007] For storing the salt barrier material, as a further preferred embodiment, the feeding assembly includes a storage box; the storage box is fixedly attached to the mounting frame; the storage box has a discharge port; the storage box is fixedly attached to two fixing blocks; each of the two fixing blocks has two sliding rods fixedly attached to its opposite sides; each of the two sliding rods of the same fixing block has an L-shaped stop fixedly attached; each sliding rod has a spring fitted on it; and each L-shaped stop has an inclined surface on its lower surface, with the two inclined surfaces being symmetrically distributed.

[0008] In order to transport the salt barrier material, as a further preferred embodiment, the conveying assembly includes a circular pipe; the circular pipe is fixedly connected to the upper part of the soil separating plate and passes through the soil separating plate; a notch is opened on the lower left side and the upper right side of the circular pipe; an auger is rotatably connected inside the circular pipe; and a servo motor fixedly connected to the circular pipe and the auger.

[0009] As a further preferred embodiment, the power assembly includes hydraulic rods; a hydraulic rod is movably connected to the front and rear sides of the mounting frame; the telescopic portions of the two hydraulic rods are rotatably connected to a connecting frame, which is fixedly connected to the soil separating plate; the connecting frame is rotatably connected to the mounting frame.

[0010] To create space in the soil, as a further preferred embodiment, the unfolding assembly includes an electric push rod; the electric push rod is fixedly connected inside the mounting cylinder; a fixed seat is fixedly connected to the telescopic part of the electric push rod; two connecting rods that are rotatably connected to the corresponding outer arc plate are rotatably connected to the fixed seat; a sliding column is fixedly connected to the lower part of the fixed seat; a straight sliding groove is opened on the mounting cylinder, and the sliding column is slidably disposed in the straight sliding groove.

[0011] As a further preferred option, a protective cover is also included; a protective cover is provided on the outside of the electric actuator.

[0012] The above setup achieves the effect of isolating the soil and the salt layer material.

[0013] In order to disperse the salt layer material, as a further preferred solution, it also includes a round rod; the installation cylinder is rotatably connected with the round rod; a plurality of equally spaced and staggered distribution of the shoveling plates are fixedly connected on the round rod, and all the shoveling plates are oppositely staggered; the installation cylinder is provided with an installation slot; the servo motor two fixedly connected with the round rod is fixedly connected in the installation slot; all the shoveling plates are located above the electric push rod.

[0014] As a further preferred solution, the outer side of the installation slot is detachably connected with a baffle.

[0015] Through the above setting, the effect that the operator can conveniently maintain the servo motor two is achieved.

[0016] As a further preferred solution, it also includes a connecting column; the middle part of the installation cylinder is rotatably connected with two connecting columns between the two outer arc plates through the torsion spring; one inner arc plate located inside the two outer arc plates is fixedly connected on each connecting column, and the two inner arc plates are symmetrically distributed; a strip-shaped slot is formed on each inner arc plate.

[0017] As a further preferred solution, the inner arc plate is made of metal material.

[0018] Through the above setting, the effect that the strength of the inner arc plate is improved is achieved.

[0019] Compared with the prior art, the application has the following advantages: the salt-resistant and alkali-reducing equipment suitable for saline-alkali soil obtained by the above design, the two outer arc plates are expanded to the opposite sides with the installation cylinder as the center by the two connecting rods, and the two outer arc plates are moved out of the fan-shaped slot with the corresponding fan-shaped spring pieces, so that the expanded outer arc plates and fan-shaped spring pieces are separated from the lower part of the ploughing layer to form a space for laying corn stalks.

[0020] The salt-resistant and alkali-reducing equipment suitable for saline-alkali soil obtained by the above design, the corn stalks are timely discharged to the two sides of the installation cylinder through the oppositely staggered shoveling plates, so that the corn stalks are quickly distributed in the separated space, and the continuously laid corn stalks form a salt layer in the lower part of the ploughing layer as the soil plate continuously moves in the soil, so that the continuous capillary channel in the soil is cut off, thereby inhibiting the migration of salt in the underground water to the surface with the evaporation of water, not only improving the water retention capacity of the soil, but also promoting the microbial activity and accelerating the recovery of the soil ecology.

[0021] The salt-resistant and alkali-reducing equipment suitable for saline-alkali soil soil of the present application is designed as above, the corn straw outside the inner arc plates is guided to the side of the separated space through the two unfolded inner arc plates, so that the corn straw is evenly laid in the separated space, and meanwhile, the two unfolded inner arc plates can support the two fan-shaped elastic pieces, preventing the soil accumulated on the fan-shaped elastic pieces from being extruded and depressed, and affecting the normal laying of the corn straw. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a perspective structural schematic view of the salt-resistant and alkali-reducing equipment suitable for saline-alkali soil soil of the present application;

[0023] Figure 2 It is a perspective structural schematic view of the soil separating plate, mounting cylinder, outer arc plate, fan-shaped elastic piece and blocking strip of the salt-resistant and alkali-reducing equipment suitable for saline-alkali soil soil of the present application;

[0024] Figure 3 It is a perspective structural schematic view of the feeding assembly of the salt-resistant and alkali-reducing equipment suitable for saline-alkali soil soil of the present application;

[0025] Figure 4 It is a perspective structural schematic view of the soil separating plate and conveying assembly of the salt-resistant and alkali-reducing equipment suitable for saline-alkali soil soil of the present application;

[0026] Figure 5 It is a perspective structural schematic view of the mounting cylinder, unfolding assembly and outer arc plate of the salt-resistant and alkali-reducing equipment suitable for saline-alkali soil soil of the present application;

[0027] Figure 6 It is a partial perspective structural schematic view of the mounting cylinder, unfolding assembly and outer arc plate of the salt-resistant and alkali-reducing equipment suitable for saline-alkali soil soil of the present application;

[0028] Figure 7 It is a perspective structural schematic view of the mounting cylinder, round rod, material stirring plate and servo motor two of the salt-resistant and alkali-reducing equipment suitable for saline-alkali soil soil of the present application;

[0029] Figure 8 It is an unfolded state view of the outer arc plate and fan-shaped elastic piece of the salt-resistant and alkali-reducing equipment suitable for saline-alkali soil soil of the present application;

[0030] Figure 9 It is a perspective structural schematic view of the mounting cylinder, outer arc plate and inner arc plate of the salt-resistant and alkali-reducing equipment suitable for saline-alkali soil soil of the present application.

[0031] Wherein: 1-mounting frame, 2-soil distribution plate, 3-mounting cylinder, 4-outer arc plate, 5-fan-shaped elastic piece, 6-stop bar, 7-spiral deep tillage mechanism, 101-storage box, 102-fixing block, 103-sliding rod, 104-L-shaped stop block, 105-spring, 106-round pipe, 107-auger, 108-servo motor one, 109-hydraulic rod, 110-connecting frame, 201-electric push rod, 202-fixing seat, 203-connecting rod, 204-sliding column, 205-protection cover, 301-round rod, 302-stirring plate, 303-servo motor two, 401-connecting column, 402-inner arc plate, 2001-guide plate, 2002-fan-shaped groove, 3001-linear sliding groove, 3002-mounting groove, 3003-stop plate, 10101-discharge port, 10601-gap, 40201-strip-shaped groove. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0033] Embodiment 1: A salt-resistant and alkali-reducing equipment suitable for saline-alkali soil, as shown in the figure, comprising a mounting frame 1 and a feeding assembly; the mounting frame 1 is connected with the feeding assembly; Figures 1-8

[0034] Further comprising a power assembly, a soil distribution plate 2, a conveying assembly, a mounting cylinder 3, an unfolding assembly, an outer arc plate 4, a fan-shaped elastic piece 5, a stop bar 6 and a spiral deep tillage mechanism 7; the mounting frame 1 is connected with the power assembly; the power assembly is connected with the soil distribution plate 2, and the soil distribution plate 2 is hollow; the soil distribution plate 2 is connected with the conveying assembly; the two sides of the soil distribution plate 2 are each provided with a guide plate 2001; the lower part of the soil distribution plate 2 is fixedly connected with the mounting cylinder 3; the mounting cylinder 3 is rotationally connected with two outer arc plates 4 which are symmetrically distributed; the mounting cylinder 3 is connected with the unfolding assembly, and the unfolding assembly is connected with the two outer arc plates 4; the front and rear parts of the soil distribution plate 2 are each provided with a fan-shaped groove 2002; each fan-shaped groove 2002 is slidably connected with a fan-shaped elastic piece 5, and the two fan-shaped elastic pieces 5 are each fixedly connected with an outer arc plate 4; each fan-shaped elastic piece 5 is provided with a stop bar 6, and the stop bar 6 is located in the fan-shaped groove 2002; the mounting frame 1 is provided with the spiral deep tillage mechanism 7, and the spiral deep tillage mechanism 7 is located below the conveying assembly; the power assembly is used to drive the soil distribution plate 2 to rotate.

[0035] ​The feeding assembly comprises a storage box 101, fixing blocks 102, slide rods 103, L-shaped blocks 104 and springs 105; the storage box 101 is fixedly connected to the mounting frame 1; a discharging port 10101 is formed in the storage box 101; two fixing blocks 102 are fixedly connected to the lower left part of the storage box 101; two slide rods 103 are fixedly connected to the opposite sides of each of the two fixing blocks 102; an L-shaped block 104 is fixedly connected to each of the two slide rods 103 of the same fixing block 102, and the discharging port 10101 is shielded by the two L-shaped blocks 104; a spring 105 is sleeved on each of the slide rods 103; and a slope is arranged on the lower surface of each of the L-shaped blocks 104, and the two slopes are symmetrically distributed.

[0036] The conveying assembly comprises a circular pipe 106, an auger 107 and a servo motor 108; the upper part of the dividing plate 2 is fixedly connected with the circular pipe 106; a notch 10601 is formed in the left lower side and the right upper side of the circular pipe 106; the auger 107 is rotatably connected in the circular pipe 106; and the servo motor 108 is bolted to the left side surface of the circular pipe 106, and the output shaft of the servo motor 108 is fixedly connected with the auger 107.

[0037] The power assembly comprises hydraulic rods 109 and a connecting frame 110; one hydraulic rod 109 is hingedly connected to the front side and the rear side of the mounting frame 1; the extension parts of the two hydraulic rods 109 are rotatably connected with the connecting frame 110, and the connecting frame 110 is fixedly connected with the dividing plate 2; and the connecting frame 110 is rotatably connected with the mounting frame 1.

[0038] The unfolding assembly comprises an electric push rod 201, a fixing seat 202, connecting rods 203 and a slide column 204; the electric push rod 201 is fixedly connected in the mounting cylinder 3; the extension part of the electric push rod 201 is fixedly connected with the fixing seat 202; two connecting rods 203 are rotatably connected to the fixing seat 202, and each of the two connecting rods 203 is rotatably connected with an outer arc plate 4; the lower part of the fixing seat 202 is fixedly connected with the slide column 204; a straight sliding groove 3001 is formed in the mounting cylinder 3, and the slide column 204 is slidingly arranged in the straight sliding groove 3001.

[0039] Further, a protective cover 205 is arranged on the outer side of the electric push rod 201, so that the corn straw and the soil cannot enter the electric push rod 201, and the normal use of the electric push rod 201 is affected.

[0040] Further comprising a round rod 301, a poking plate 302 and a servo motor two 303; the installation cylinder 3 is rotatably connected with the round rod 301; the round rod 301 is fixedly connected with a plurality of poking plates 302 which are distributed at equal intervals and staggered, and the directions of all the poking plates 302 are reversely staggered; the installation cylinder 3 is provided with an installation groove 3002; the installation groove 3002 is boltedly connected with the servo motor two 303, and the output shaft of the servo motor two 303 is fixedly connected with the round rod 301; all the poking plates 302 are located above the electric push rod 201.

[0041] Further, the outer side of the installation groove 3002 is detachably connected with a baffle 3003.

[0042] The above further designed advantage is that the soil is prevented from entering the installation groove 3002, thereby affecting the normal use of the servo motor two 303.

[0043] The working steps of the embodiment are as follows:

[0044] The following directions are taken as the visual angle reference, wherein the direction of the guide plate 2001 label is the left direction, and the rotating visual angle direction is from front to back, from top to bottom and from right to left. Figure 1

[0045] The soil is reformed by implementing the interlayer salt blocking method in the saline-alkali soil, the soil capillary action is destroyed by laying a salt blocking layer (such as corn straw, river sand, ceramsite and zeolite) in the lower part of the plough layer, the underground water salt is blocked from upwelling, the evaporation and salt accumulation are reduced, and the following is an example of taking the salt blocking layer material as corn straw: before use, the salt blocking and alkali reducing equipment suitable for the saline-alkali soil is installed at the tail of the mobile tracked vehicle, the salt blocking and alkali reducing equipment suitable for the saline-alkali soil is powered by the mobile tracked vehicle to provide power for all power-driven components, and the crushed corn straw is filled into the storage box 101.

[0046] ​When the operator drives the mobile tracked vehicle with the saline-alkali soil improvement equipment to the saline-alkali soil, the spiral deep tillage mechanism 7 is controlled to descend, the vertical spiral drill bit of the spiral deep tillage mechanism 7 is rotated at a high speed of 500 revolutions per minute to cut the soil into powder, the plough layer below 60 cm is broken, the soil porosity is expanded, the soil is improved by adding the modifier to the powdered soil, the salt is further decomposed and the soil fertility is improved, with the movement of the mobile tracked vehicle, after the soil separating plate 2 moves above the deep tillage and softening soil area, the extension of the two hydraulic rods 109 is controlled, the connecting frame 110, the soil separating plate 2, the conveying assembly, the mounting cylinder 3, the unfolding assembly, the outer arc plate 4, the fan-shaped spring piece 5 and the blocking strip 6 are driven to rotate, the soil separating plate 2 gradually changes from an inclined shape to a horizontal shape, the soil separating plate 2 is inserted into the powdered soil, meanwhile, the circular tube 106 contacts the inclined surface of the two L-shaped blocks 104 in the rotating process, the two L-shaped blocks 104 and the corresponding slide rods 103 are pushed to move to the opposite sides, the corresponding springs 105 are forced to compress, after the circular tube 106 stops rotating, the notch 10601 on the upper right side of the circular tube 106 is connected with the discharge port 10101, the corn straw in the storage tank 101 falls into the circular tube 106, the output shaft of the servo motor 108 is controlled to drive the auger 107 to rotate, the corn straw in the circular tube 106 is continuously conveyed to the left, and the corn straw in the circular tube 106 falls into the soil separating plate 2 from another notch 10601.

[0047] After the soil separating plate 2 is inserted into the powdered soil, the extension of the electric push rod 201 is controlled, the fixed seat 202, the connecting rod 203 and the slide column 204 move along the track of the straight line sliding groove 3001, the two outer arc plates 4 are pushed to expand to the opposite sides with the mounting cylinder 3 as the center by the two connecting rods 203, the two outer arc plates 4 change from a merged shape to an acute angle shape, the powdered soil outside the two outer arc plates 4 is pushed to the two sides, meanwhile, the two outer arc plates 4 move out of the fan-shaped groove 2002 with the corresponding fan-shaped spring pieces 5, so that the unfolded outer arc plates 4 and the fan-shaped spring pieces 5 separate the space for laying the corn straw at the lower part of the plough layer, as shown in Figure 8 .

[0048] When the two outer arc plates 4 are unfolded, the corn straw in the soil separating plate 2 falls onto the plurality of raking plates 302, the output shaft of the servo motor 303 is controlled to drive the circular rod 301 and the plurality of raking plates 302 to rotate, the corn straw is timely discharged to the two sides of the mounting cylinder 3 by the plurality of raking plates 302 arranged in reverse staggered mode, so that the corn straw is quickly distributed in the separated space, with the continuous movement of the soil separating plate 2 in the soil, the continuously laid corn straw forms a salt separation layer at the lower part of the plough layer, which can cut off the continuous capillary channel in the soil, so as to inhibit the migration of the salt in the underground water to the ground surface with the evaporation of the water, not only can improve the water retention capacity of the soil, but also can promote the microbial activity and accelerate the recovery of the soil ecology.

[0049] It should be noted that the soil is broken by the guide plate 2001, facilitating the insertion of the soil breaking plate 2 into the soil.

[0050] Example 2: on the basis of example 1, as Figures 8-9 shown, further comprising a connecting column 401 and an inner arc plate 402; the middle part of the mounting cylinder 3 is rotatably connected with two connecting columns 401 through torsional springs, and the two connecting columns 401 are located between the two outer arc plates 4; each connecting column 401 is fixedly connected with an inner arc plate 402, and the two inner arc plates 402 are symmetrically distributed and located on the inner side of the two outer arc plates 4; a strip-shaped groove 40201 is formed on each inner arc plate 402 for avoiding the connecting rod 203.

[0051] Further, the inner arc plate 402 is made of metal.

[0052] The above further benefits are: to improve the strength of the inner arc plate 402 and prevent the inner arc plate 402 from being extruded and deformed.

[0053] The working principle of the embodiment is:

[0054] Since the space expanded by the two outer arc plates 4 is large, the corn stalks cannot be distributed on the side of the space separated by only a few shoveling plates 302, therefore, an inner arc plate 402 is arranged on the inner side of each of the two outer arc plates 4, when the two outer arc plates 4 are expanded and no longer limit the two inner arc plates 402, the two torsional springs will drive the corresponding connecting columns 401 and inner arc plates 402 to expand outward together, as Figure 8 shown, at this time, the connecting column 401 is taken as a separation line, and the several shoveling plates 302 are divided into left and right parts, wherein the corn stalks shoveling by the left part of the several shoveling plates 302 are on the inner side of the two inner arc plates 402, and the corn stalks shoveling by the right part of the several shoveling plates 302 are on the outer side of the two inner arc plates 402, and with the continuous movement of the soil breaking plate 2 to the right, the corn stalks on the outer side of the inner arc plate 402 are guided to the side of the space separated by the two expanded inner arc plates 402, ensuring that the corn stalks are evenly laid in the separated space, at the same time, the two expanded inner arc plates 402 can also support the two fan-shaped elastic pieces 5, preventing the soil accumulated on the fan-shaped elastic pieces 5 from extruding and indenting them, affecting the normal laying of the corn stalks.

[0055] It should be noted that the strip-shaped groove 40201 formed on the inner arc plate 402 reserves enough space for the rotation and expansion of the connecting rod 203, ensuring that the connecting rod 203 does not interfere with the inner arc plate 402.

[0056] The application is described in detail above, and the principles and implementation modes of the application are described by applying specific examples. The above description of the examples is only used to help understand the method of the application and its core idea; meanwhile, for those skilled in the art, according to the idea of the application, the specific implementation modes and application ranges will have changes, and the above description should not be understood as a limitation on the application.

Claims

1. A salt and alkali resisting device suitable for saline-alkali soil, comprising a mounting frame (1) and a feeding assembly mounted on the mounting frame (1); characterized in that: The power assembly is used for driving the split soil plate (2) to rotate. The feeding assembly comprises a storage tank (101); the storage tank (101) is fixedly connected to the mounting frame (1); the storage tank (101) is provided with a discharge port (10101); the storage tank (101) is fixedly connected with two fixed blocks (102); the opposite sides of the two fixed blocks (102) are each fixedly connected with two slide rods (103); the two slide rods (103) of the same fixed block (102) are each fixedly connected with an L-shaped stop block (104); each slide rod (103) is sleeved with a spring (105); the lower surface of each L-shaped stop block (104) is provided with a slope, and the two slopes are symmetrically distributed. The power assembly is used for driving the split soil plate (2) to rotate. The power assembly comprises a hydraulic rod (109); the front side and the rear side of the mounting frame (1) are each movably connected with a hydraulic rod (109); the telescopic parts of the two hydraulic rods (109) are jointly rotatably connected with a connecting frame (110), the connecting frame (110) is fixedly connected with the split soil plate (2); the connecting frame (110) is rotatably connected with the mounting frame (1).

2. The salt and alkali resisting device for saline-alkali soil according to claim 1, characterized in that: The power assembly is used for driving the split soil plate (2) to rotate.

3. The salt and alkali resisting device for saline-alkali soil according to claim 2, characterized in that: The unfolding assembly comprises an electric push rod (201), the electric push rod (201) is fixedly connected in a mounting cylinder (3), a fixed seat (202) is fixedly connected to an extension part of the electric push rod (201), two connecting rods (203) which are rotatably connected with corresponding outer arc plates (4) are rotatably connected to the fixed seat (202), a sliding column (204) is fixedly connected to a lower part of the fixed seat (202), a linear sliding groove (3001) is formed in the mounting cylinder (3), and the sliding column (204) is slidably arranged in the linear sliding groove (3001).

4. The salt and alkali resisting device for saline-alkali soil according to claim 3, characterized in that: A protective cover (205) is further included, and the protective cover (205) is arranged on the outer side of the electric push rod (201).

5. The salt and alkali resisting device for saline-alkali soil according to claim 1, characterized in that: A round rod (301) is further included, the round rod (301) is rotatably connected in the mounting cylinder (3), a plurality of spacing distribution and staggered arrangement of material shifting plates (302) are fixedly connected to the round rod (301), a mounting groove (3002) is formed in the mounting cylinder (3), a servo motor two (303) which is fixedly connected with the round rod (301) is fixedly connected in the mounting groove (3002), and all the material shifting plates (302) are arranged above the electric push rod (201).

6. The salt and alkaline resisting device for saline-alkali soil according to claim 5, characterized in that: A baffle (3003) is detachably connected to the outer side of the mounting groove (3002).

7. The salt and alkaline resisting device for saline-alkali soil according to claim 5, characterized in that: A connecting column (401) is further included, two connecting columns (401) which are rotatably connected through torsion springs are arranged in the middle part of the mounting cylinder (3) and located between the two outer arc plates (4), one inner arc plate (402) which is located on the inner side of the two outer arc plates (4) is fixedly connected to each of the connecting columns (401), the two inner arc plates (402) are symmetrically distributed, and a strip-shaped groove (40201) is formed in each of the inner arc plates (402).

8. The salt and alkaline resisting device for saline-alkali soil according to claim 7, characterized in that: The inner arc plate (402) is made of metal.

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