CN110393102B

CN110393102B - Device and method for improving saline-alkali soil alfalfa cultivation

Info

Publication number: CN110393102B
Application number: CN201910664518.8A
Authority: CN
Inventors: 王振南; 吕慎金; 杨燕; 李富宽; 王慧; 王鲁北
Original assignee: Linyi University
Current assignee: Linyi University
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2021-07-06
Anticipated expiration: 2039-07-23
Also published as: CN110393102A

Abstract

The invention discloses equipment for improving saline-alkali soil alfalfa cultivation, which comprises a fixing frame, a cultivation box, an irrigation assembly, a medicine spraying assembly and a control box, wherein the fixing frame is provided with a connecting rod and an adjusting hole, the cultivation box is movably connected with the fixing frame, a planting groove is arranged inside the cultivation box, the lower end of the cultivation box is provided with a one-way water permeable plate and a reverse osmosis pipe, the fixing frame is provided with a desalting box, the reverse osmosis pipe is connected with the desalting box, a soil layer, a nutrition base layer and a water permeable layer are arranged in the planting groove, a soil humidity detection device is arranged in the nutrition base layer, the irrigation assembly comprises a water storage tank and an irrigation pipe, the irrigation pipe is connected with the water storage tank through a connecting head, the medicine spraying assembly comprises a medicine box and a spraying; the alfalfa growth regulator is reasonable in structural design, effectively improves the growing environment of alfalfa, improves the yield of alfalfa, and is suitable for large-scale popularization.

Description

Device and method for improving saline-alkali soil alfalfa cultivation

Technical Field

The invention relates to the technical field of saline-alkali soil planting, in particular to equipment and a method for improving saline-alkali soil alfalfa cultivation.

Background

Alfalfa is a popular name for plants in the genus of alfalfa, commonly known as burclover, and is a perennial flowering plant; the alfalfa which is the most famous is used as pasture, the alfalfa is various in variety and mostly is a wild herbaceous plant, the alfalfa produced in China is mainly three in number, the nutritional value is very high, the alfalfa has the effects of clearing spleen and stomach, benefiting large and small intestines and removing bladder stones, the alfalfa contains the most abundant vitamin K, the components are high, the alfalfa is suitable for all vegetables, and other components such as vitamin C, B are quite abundant; the saline-alkali soil alfalfa planting is an effective way for improving the soil environment, but the salt contained in the saline-alkali soil influences the normal growth of crops, according to incomplete statistics of textbook organization and grain and agriculture organization of the united nations, the area of the saline-alkali soil all over the world is 9.5438 hundred million hectares, wherein 9913 million hectares are in China, the formation of alkaline earth and alkalized soil in China is mostly related to the accumulation of carbonate in the soil, so that the alkalization degree is generally high, and plants in serious saline-alkali soil regions can hardly survive; saline and alkaline land afforestation salt elimination is one of the good key measures of plant growth, and saline and alkaline land's a big characteristic is exactly that groundwater is high, has saline and alkaline moisture to use soil capillary to rise to the earth's surface, and after the moisture evaporation, saline and alkaline can be detained at the earth's surface, along influencing vegetation, brings very big difficulty for green cultivation work. The ecological restoration and improvement of the saline-alkali soil are projects benefiting the nation and the people, can increase the cultivated land area, excavate the agricultural potential and are more beneficial to the development of the agricultural industry.

However, the existing saline-alkali soil alfalfa cultivation equipment is large in size, complex in structure and difficult to construct; on the other hand, the growing condition of the alfalfa in the initial stage of cultivation is good, but the alfalfa cannot grow for a long time due to the fact that the soil quality cannot be completely improved in the later stage, the yield of the alfalfa is low, and the effect of improving the soil quality is slight.

Disclosure of Invention

Aiming at the technical problems, the invention provides the device for cultivating the alfalfa in the saline-alkali soil, which can improve the growing environment of the alfalfa and the yield of the alfalfa.

The technical scheme of the invention is as follows: an apparatus for improving the cultivation of alfalfa in saline-alkali soil comprises a fixing frame, a cultivation box, an irrigation assembly, a medicine spraying assembly and a control box; the fixing frame is a cuboid frame, the upper end of the fixing frame is provided with a connecting rod, the fixing frame is provided with an adjusting hole, and the bottom end of the fixing frame is provided with a fixing cone; the cultivation box is a rectangular frame with openings at the upper end and the lower end, a sliding sleeve is arranged on the cultivation box, the cultivation box is movably connected with a fixing frame through the sliding sleeve, a planting groove is arranged in the cultivation box, an opening is formed in the lower end of the planting groove, a one-way water permeable plate is arranged at the opening of the lower end of the cultivation box, a reverse osmosis pipe is arranged on the one-way water permeable plate, a desalting box is arranged on the fixing frame, the reverse osmosis pipe is connected with the desalting box, a soil layer, a nutrition base layer and a water permeable layer are sequentially arranged in the planting groove from top to bottom; the irrigation assembly comprises a water storage tank and an irrigation pipe, the water storage tank is fixedly arranged on the connecting rod, the irrigation pipe is horizontally arranged inside the planting groove and is positioned in the nutrition base layer, a connector is arranged on the irrigation pipe, the irrigation pipe is connected with the water storage tank through the connector, an electromagnetic valve is arranged at the connection position, and a plurality of drip irrigation heads are uniformly arranged on the irrigation pipe; the medicine spraying assembly comprises a medicine box and a spraying plate, the medicine box is fixedly arranged on the connecting rod, the spraying plate is fixedly arranged on the fixing frame and is positioned at the upper end of the cultivation box, and the spraying plate is connected with the medicine box; control box and soil moisture detection device are all sold in the market, and the control box is connected with soil moisture detection device and solenoid valve, and soil moisture detection device and solenoid valve are supplied power by external power source.

Furthermore, the top end of the fixing frame is connected with a light-transmitting dome through a mounting seat, a plurality of water guide strips are uniformly arranged on the light-transmitting dome, water collecting grooves are formed in two sides of the light-transmitting dome and communicated with the water guide strips, and the water collecting grooves are communicated with the water storage tank; the transparent dome is arranged to be beneficial to protecting the alfalfa seedlings. Damage to the alfalfa seedlings in severe weather is avoided; through setting up water guide strip, be favorable to collecting the moisture in the evaporation air.

Furthermore, a soil loosening assembly is arranged inside the planting groove; the soil loosening assembly comprises a soil loosening rod, a transmission chain and an adjusting hand wheel, the soil loosening rod is horizontally arranged inside the planting groove and located in a soil layer, a plurality of soil loosening teeth are uniformly arranged on the soil loosening rod, a first connecting gear is arranged at the end of the soil loosening rod, the adjusting hand wheel is rotatably arranged on the planting box, a second connecting gear is arranged on the adjusting hand wheel, and the transmission chain is used for connecting the first connecting gear and the second connecting gear; through the rotation regulation hand wheel for connecting gear two and driving connecting gear one rotatory, and then make the stick that loosens the soil rotatory, the tooth that loosens the soil on the stick that utilizes loosens the soil carries out soil loosening, prevents that soil from hardening, has effectively improved alfalfa's growing environment.

Furthermore, the fixed cone is in threaded connection with the lower end of the fixed frame, an adjusting rod is arranged on the fixed cone, and a spiral groove is formed in the lower end of the fixed cone; through the rotation adjusting rod, the fixing cone extends into the ground under the action of the spiral groove, the fixing frame is fixed with the ground, and the influence of severe natural environment on the growth of the alfalfa is avoided.

Furthermore, the drip irrigation heads are horizontally and uniformly arranged on two sides of the irrigation pipe, and the openings of the drip irrigation heads are downward; two rows of drip irrigation heads are arranged, so that uniform irrigation is facilitated, openings of the drip irrigation heads are arranged downwards, and the drip irrigation heads are prevented from being blocked by soil particles.

Furthermore, a fixed pin is arranged on the sliding sleeve, a reset spring is arranged at the joint of the fixed pin and the sliding sleeve, and the fixed pin is used for inserting and fixing the sliding sleeve and the adjusting hole; through reciprocating the sliding sleeve to make through fixed pin and regulation hole and be connected steadily between sliding sleeve and the mount, be convenient for adjust the height and the inclination of cultivation case simultaneously.

The method for improving the saline-alkali soil alfalfa cultivation by utilizing the equipment comprises the following steps:

the method comprises the following steps: moving the fixed frame to a saline-alkali soil planting area, and fixing the fixed frame with the ground through an adjusting rod on the fixed cone; then fixing the cultivation box on a fixing frame through a sliding sleeve, adjusting the height and the inclination angle of the cultivation box by adjusting the position of the sliding sleeve to enable the reverse osmosis pipe to extend into the saline-alkali soil, and finally inserting and fixing the sliding sleeve and an adjusting hole through a fixing pin;

step two: respectively paving a permeable layer, a nutrition base layer and a soil layer in the planting groove, sowing alfalfa seeds on the surface of the soil layer, connecting a water storage tank with an irrigation pipe, detecting soil humidity through a soil humidity detection device, and then controlling the opening or closing of an electromagnetic valve through a control box to keep the soil humidity balance; excess water in the soil is discharged into the saline-alkali soil through a one-way water permeable plate to improve the saline-alkali soil, and saline-alkali components in the soil enter a desalting tank through a reverse osmosis pipe to be desalted;

step three: the adjusting hand wheel is periodically rotated, so that the transmission chain drives each soil loosening rod to rotate, soil is loosened through soil loosening teeth on the soil loosening rods, and soil hardening is avoided; the pesticide is regularly sprayed to the alfalfa through the spraying plate to prevent plant diseases and insect pests.

Compared with the prior art, the invention has the beneficial effects that: the alfalfa growth device is reasonable in structural design, a good growth environment is provided for alfalfa planting by arranging the light-transmitting dome and the fixing frame, and the influence of external natural factors on alfalfa growth is reduced; by arranging the cultivation box, the alfalfa is isolated from the saline-alkali soil, so that the alfalfa is prevented from being damaged by the saline-alkali soil, and meanwhile, the soil environment of the saline-alkali soil is improved; by arranging the permeable plate, the moisture in the soil layer is kept balanced all the time, and the influence of excessive moisture on the alfalfa root system is avoided; loosen the soil subassembly through setting up, be convenient for loosen the soil horizon, avoid soil to harden, be favorable to the alfalfa root system to absorb the nutrient substance in the nutrition basic unit, improve the output of alfalfa.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a left side view of the present aspect;

FIG. 3 is a right side view of the present invention;

FIG. 4 is a schematic view of the attachment of the fixing cone of the present invention to the fixing frame;

FIG. 5 is a top view of the growing box of the present invention;

FIG. 6 is a left side view of the growing box of the present invention;

FIG. 7 is a schematic diagram of the construction of an irrigation pipe of the present invention;

FIG. 8 is a schematic structural view of a ripping bar of the present disclosure;

wherein, 1-a fixed frame, 10-a mounting seat, 11-a light-transmitting dome, 110-a water guide strip, 111-a water collecting tank, 12-a connecting rod, 13-an adjusting hole, 14-a fixed cone, 140-an adjusting rod, 141-a spiral groove, 2-a cultivation box, 20-a sliding sleeve, 200-a fixed pin, 21-a planting groove, 210-a soil layer, 211-a nutrition base layer, 212-a water permeable layer, 22-a one-way water permeable plate, 220-a reverse osmosis pipe, 23 a desalination box, 3-an irrigation component, 30-a water storage box, 31-an irrigation pipe, 310-a connector, 311-a drip irrigation head, 4-a medicine spraying component, 40-a medicine box, 41-a spraying plate, 5-a soil humidity detection device, 6-a soil loosening component, 60-a soil loosening rod, 600-scarification teeth, 601-connecting gear I, 61-transmission chain, 62-adjusting hand wheel and 620-connecting gear II.

Detailed Description

Example (b): the device for improving the cultivation of the alfalfa in the saline-alkali soil, which is shown in the figures 1, 2 and 3, comprises a fixing frame 1, a cultivation box 2, an irrigation component 3, a medicine spraying component 4 and a control box; the fixing frame 1 is a cuboid frame, the upper end of the fixing frame 1 is provided with a connecting rod 12, the fixing frame 1 is provided with an adjusting hole 13, and the bottom end of the fixing frame 1 is provided with a fixing cone 14; the top end of the fixed frame 1 is connected with a light-transmitting dome 11 through a mounting seat 10, a plurality of water guide strips 110 are uniformly arranged on the light-transmitting dome 11, water collecting grooves 111 are formed in two sides of the light-transmitting dome 11, the water collecting grooves 111 are communicated with the water guide strips 110, and the water collecting grooves 111 are communicated with the water storage tank 30; the light-transmitting dome 11 is arranged to be beneficial to protecting the alfalfa seedlings. Damage to the alfalfa seedlings in severe weather is avoided; the water guide strip 110 is arranged, so that the moisture in the evaporated air can be collected; the fixed cone 14 is in threaded connection with the lower end of the fixed frame 1, an adjusting rod 140 is arranged on the fixed cone 14, and a spiral groove 141 is arranged at the lower end of the fixed cone 14; the fixing cone 14 extends into the ground under the action of the spiral groove 141 by rotating the adjusting rod 140, so that the fixing frame 1 is fixed with the ground, and the influence of severe natural environment on the growth of the alfalfa is avoided;

as shown in fig. 1, 2, 5, 6 and 8, the cultivation box 2 is a rectangular frame with openings at the upper and lower ends, a sliding sleeve 20 is arranged on the cultivation box 2, the cultivation box 2 is movably connected with the fixed frame 1 through the sliding sleeve 20, a fixing pin 200 is arranged on the sliding sleeve 20, a return spring is arranged at the joint of the fixing pin 200 and the sliding sleeve 20, and the fixing pin 200 is used for fixedly inserting the sliding sleeve 20 and the adjusting hole 13; the sliding sleeve 20 is stably connected with the fixed frame 1 through the fixing pin 200 and the adjusting hole 13 by moving the sliding sleeve 20 up and down, and the height and the inclination angle of the cultivation box 2 can be conveniently adjusted; a planting groove 21 is formed in the planting box 2, an opening is formed in the lower end of the planting groove 21, a one-way water permeable plate 22 is arranged at the opening in the lower end of the planting box 2, a reverse osmosis pipe 220 is arranged on the one-way water permeable plate 22, a desalting box 23 is arranged on the fixing frame 1, the reverse osmosis pipe 220 is connected with the desalting box 23, a soil layer 210, a nutrition base layer 211 and a water permeable layer 212 are sequentially arranged in the planting groove 21 from top to bottom, and a soil humidity detection device 5 is arranged in the nutrition base layer 211; a soil loosening assembly 6 is arranged inside the planting groove 21; the soil loosening assembly 6 comprises a soil loosening rod 60, a transmission chain 61 and an adjusting hand wheel 62, the soil loosening rod 60 is horizontally arranged inside the planting groove 21 and is located in the soil layer 210, a plurality of soil loosening teeth 600 are uniformly arranged on the soil loosening rod 60, a first connecting gear 601 is arranged at the end of the soil loosening rod 60, the adjusting hand wheel 62 is rotatably arranged on the planting box 2, a second connecting gear 620 is arranged on the adjusting hand wheel 62, and the transmission chain 61 is used for connecting the first connecting gear 601 and the second connecting gear 620; the second connecting gear 620 drives the first connecting gear 601 to rotate by rotating the adjusting hand wheel 62, so that the soil loosening rod 60 rotates, soil loosening is performed by using the soil loosening teeth 600 on the soil loosening rod 60, soil hardening is prevented, and the growing environment of the alfalfa is effectively improved;

as shown in fig. 1 and 7, the irrigation assembly 3 includes a water storage tank 30 and an irrigation pipe 31, the water storage tank 30 is fixedly arranged on the connecting rod 12, the irrigation pipe 31 is horizontally arranged inside the planting groove 21 and located in the nutrition base layer 211, the irrigation pipe 31 is provided with a connector 310, the irrigation pipe 31 is connected with the water storage tank 30 through the connector 310, the connection is provided with an electromagnetic valve, and the irrigation pipe 31 is uniformly provided with a plurality of drip irrigation heads 311; the drip irrigation heads 311 are horizontally and uniformly arranged on two sides of the irrigation pipe 31, and the openings of the drip irrigation heads 311 are downward; two rows of drip irrigation heads 311 are arranged, so that uniform irrigation is facilitated, the openings of the drip irrigation heads 311 are arranged downwards, and soil particles are prevented from blocking the drip irrigation heads 311;

as shown in fig. 1 and 6, the medicine spraying assembly 4 comprises a medicine box 40 and a spraying plate 41, the medicine box 40 is fixedly arranged on the connecting rod 12, the spraying plate 41 is fixedly arranged on the fixing frame 1 and is positioned at the upper end of the cultivation box 2, and the spraying plate 41 is connected with the medicine box 40; control box and soil humidity detection device 5 are all sold in the market, and the control box is connected with soil humidity detection device 5 and solenoid valve, and soil humidity detection device 5 and solenoid valve are supplied power by external power source.

the method comprises the following steps: moving the fixed frame 1 to a saline-alkali soil planting area, and fixing the fixed frame 1 with the ground through the adjusting rod 140 on the fixed cone 14; then fixing the cultivation box 2 on the fixing frame 1 through the sliding sleeve 20, adjusting the height and the inclination angle of the cultivation box 2 by adjusting the position of the sliding sleeve 20, enabling the reverse osmosis pipe 220 to extend into the saline-alkali soil, and finally inserting and fixing the sliding sleeve 20 and the adjusting hole 13 through the fixing pin 200;

step two: respectively paving a permeable layer 212, a nutrition base layer 211 and a soil layer 210 in the planting groove 21, sowing alfalfa seeds on the surface of the soil layer 210, connecting the water storage tank 30 with the irrigation pipe 31, detecting the soil humidity through the soil humidity detection device 5, and then controlling the opening or closing of the electromagnetic valve through the control box to keep the soil humidity balance; excess water in the soil is discharged into the saline-alkali soil through the one-way permeable plate 22 to improve the saline-alkali soil, and saline-alkali components in the soil enter the desalting tank 23 through the reverse osmosis pipe 220 for desalting treatment;

step three: the adjusting hand wheel 62 is periodically rotated, so that the transmission chain 61 drives each soil loosening rod 60 to rotate, soil is loosened through the soil loosening teeth 600 on the soil loosening rods 60, and soil hardening is avoided; the pesticide is regularly sprayed to the alfalfa through the spraying plate 41 to prevent the plant diseases and insect pests.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The device for improving the cultivation of the alfalfa in the saline-alkali soil is characterized by comprising a fixing frame (1), a cultivation box (2), an irrigation assembly (3), a medicine spraying assembly (4) and a control box; the fixing frame (1) is a cuboid frame, a connecting rod (12) is arranged at the upper end of the fixing frame (1), an adjusting hole (13) is formed in the fixing frame (1), a fixing cone (14) is arranged at the bottom end of the fixing frame (1), the fixing cone (14) is in threaded connection with the lower end of the fixing frame (1), an adjusting rod (140) is arranged on the fixing cone (14), a spiral groove (141) is formed in the lower end of the fixing cone (14), the fixing cone (14) extends into the ground under the action of the spiral groove (141) through rotating the adjusting rod (140), the fixing frame (1) is fixed with the ground, and the influence of severe natural environment on the growth of alfalfa is avoided; the top end of the fixing frame (1) is connected with a light-transmitting dome (11) through a mounting seat (10), a plurality of water guide strips (110) are uniformly arranged on the light-transmitting dome (11), water collecting grooves (111) are formed in two sides of the light-transmitting dome (11), the water collecting grooves (111) are communicated with the water guide strips (110), the water collecting grooves (111) are communicated with a water storage tank (30), and the light-transmitting dome (11) is arranged to be beneficial to protecting alfalfa seedlings and avoid damage to the alfalfa seedlings in severe weather; the water guide strip (110) is arranged, so that moisture in the evaporated air can be collected;

the cultivation box (2) is a cuboid frame with openings at the upper end and the lower end, a sliding sleeve (20) is arranged on the cultivation box (2), the cultivation box (2) is movably connected with the fixing frame (1) through the sliding sleeve (20), a fixing pin (200) is arranged on the sliding sleeve (20), a reset spring is arranged at the joint of the fixing pin (200) and the sliding sleeve (20), the fixing pin (200) is used for inserting and fixing the sliding sleeve (20) and the adjusting hole (13), the sliding sleeve (20) is stably connected with the fixing frame (1) through moving the sliding sleeve (20) up and down, and the fixing pin (200) and the adjusting hole (13) are convenient for adjusting the height and the inclination angle of the cultivation box; a planting groove (21) is formed in the cultivation box (2), an opening is formed in the lower end of the planting groove (21), a soil loosening assembly (6) is arranged in the planting groove (21), a one-way permeable plate (22) is arranged at the opening of the lower end of the cultivation box (2), a reverse osmosis pipe (220) is arranged on the one-way permeable plate (22), a desalting box (23) is arranged on the fixing frame (1), the reverse osmosis pipe (220) is connected with the desalting box (23), a soil layer (210), a nutrition base layer (211) and a permeable layer (212) are sequentially arranged in the planting groove (21) from top to bottom, and a soil humidity detection device (5) is arranged in the nutrition base layer (211);

the irrigation assembly (3) comprises a water storage tank (30) and an irrigation pipe (31), the water storage tank (30) is fixedly arranged on the connecting rod (12), the irrigation pipe (31) is horizontally arranged inside the planting groove (21) and is positioned in the nutrition base layer (211), a connector (310) is arranged on the irrigation pipe (31), the irrigation pipe (31) is connected with the water storage tank (30) through the connector (310), an electromagnetic valve is arranged at the connection position, and a plurality of drip irrigation heads (311) are uniformly arranged on the irrigation pipe (31);

the medicine spraying assembly (4) comprises a medicine box (40) and a spraying plate (41), the medicine box (40) is fixedly arranged on the connecting rod (12), the spraying plate (41) is fixedly arranged on the fixing frame (1) and is positioned at the upper end of the cultivation box (2), and the spraying plate (41) is connected with the medicine box (40); the control box is connected with the soil humidity detection device (5) and the electromagnetic valve, and the soil humidity detection device (5) and the electromagnetic valve are powered by an external power supply;

the soil loosening assembly (6) comprises a soil loosening rod (60), a transmission chain (61) and an adjusting hand wheel (62), the soil loosening rod (60) is horizontally arranged inside the planting groove (21) and located in the soil layer (210), a plurality of soil loosening teeth (600) are uniformly arranged on the soil loosening rod (60), a first connecting gear (601) is arranged at the end of the soil loosening rod (60), the adjusting hand wheel (62) is rotatably arranged on the cultivation box (2), a second connecting gear (620) is arranged on the adjusting hand wheel (62), the transmission chain (61) is used for connecting the first connecting gear (601) and a second connecting gear (620), the second connecting gear (620) is driven to rotate by rotating the adjusting hand wheel (62), the soil loosening is carried out by utilizing the soil loosening teeth (600) on the soil loosening rod (60), and soil hardening is prevented, effectively improves the growing environment of the alfalfa.

2. The method for cultivating alfalfa, utilizing the device for improving cultivation of alfalfa in saline-alkali soil as claimed in claim 1, is characterized by comprising the following steps:

the method comprises the following steps: the fixing frame (1) is moved to a saline-alkali soil planting area, and the fixing frame (1) is fixed with the ground through an adjusting rod (140) on a fixing cone (14); then the cultivation box (2) is fixed on the fixing frame (1) through the sliding sleeve (20), the height and the inclination angle of the cultivation box (2) are adjusted by adjusting the position of the sliding sleeve (20), the reverse osmosis pipe (220) extends into the saline-alkali soil, and finally the sliding sleeve (20) and the adjusting hole (13) are fixed in an inserting mode through the fixing pin (200);

step two: respectively paving a permeable layer (212), a nutrition base layer (211) and a soil layer (210) in the planting groove (21), sowing alfalfa seeds on the surface of the soil layer (210), connecting a water storage tank (30) with an irrigation pipe (31), detecting soil humidity through a soil humidity detection device (5), and then controlling the opening or closing of an electromagnetic valve through a control box to keep the soil humidity balance; excess water in the soil is discharged into the saline-alkali soil through a one-way water permeable plate (22) to improve the saline-alkali soil, and saline-alkali components in the soil enter a desalting tank (23) through a reverse osmosis pipe (220) for desalting treatment;

step three: the adjusting hand wheel (62) is rotated regularly, so that the transmission chain (61) drives each soil loosening rod (60) to rotate, soil is loosened through soil loosening teeth (600) on the soil loosening rods (60), and soil hardening is avoided; the pesticide is regularly sprayed to the alfalfa through the spraying plate (41) to prevent the plant diseases and insect pests.