Method and device for promoting early growth, quick germination and robust growth of crops in crop rotation area

Abstract

The invention discloses a method and a device for promoting early growth, rapid germination and robust growth of crops in a crop rotation area, belongs to the technical field of agricultural planting, and aims to achieve the purpose, the technical scheme adopted by the invention is as follows: the method for promoting early growth, rapid germination and robust growth of crops in the crop rotation area comprises the following steps: step 1, ridging and digging a foundation pit; the method comprises the following steps: ploughing a crop rotation paddy field, digging drainage channels, ridging, digging planting foundation pits at equal intervals, and airing for 10-15 days; 2, improvement treatment is conducted, specifically, hardened soil at the bottom of the foundation pit dug in the step 1 is smashed and scattered through a transplanting hole improvement device, solid or liquid fertilizer is synchronously applied, so that the soil in the foundation pit is loosened, and proper transplanting holes are obtained after the fertilizer, the matrix and the soil are evenly mixed; in order to solve the problems, the invention provides the method and the device for promoting early growth and rapid germination / robust growth of the crops in the crop rotation area, and the method and the device are used for solving the technical problems that the crops grow slowly and the yield is reduced easily due to soil hardening in the crop rotation area.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of agricultural planting technology, and particularly relates to a method and device for promoting early growth and rapid / healthy growth of crops in a rotation area. BACKGROUND

[0002] Rice field rotation is a planting system for efficient use of agricultural land resources, and tobacco-rice rotation is a typical representative mode. The mode usually cultivates rice in summer and grows tobacco in winter and spring, and through the periodic alternation of paddy fields and dry fields, the unit area yield of rice is improved, and the yield and efficiency of tobacco planting are realized.

[0003] Although tobacco-rice rotation has significant planting benefits, due to its water-dry alternation characteristics, the soil must be effectively treated during the crop conversion stage to ensure the normal growth and development of the subsequent crops. For example, in the process of converting from rice planting to tobacco planting, the rice field under flooding conditions needs to be converted to dry conditions, and water management is particularly critical. The conventional operation includes natural drying of the field for a period of time after ridging to reduce soil humidity. However, during this process, as water evaporates, the soil is prone to compaction, the structure density increases, and the aeration decreases. If tobacco seedlings are directly transplanted in such compacted soil, not only will it limit root expansion and downward penetration, leading to slow plant growth, but it will also affect the efficiency of water and nutrient absorption, ultimately restricting crop yield and quality.

[0004] To solve the growth obstacles of crops in the rotation area caused by soil compaction and improve land output efficiency, a crop cultivation method and matching device specifically for rotation planting system are proposed. SUMMARY

[0005] To solve the above problems, the present application provides a method and device for promoting early growth and rapid / healthy growth of crops in a rotation area, which solves the technical problems of slow growth and reduced yield of crops in the rotation area due to soil compaction.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows: A method for promoting early growth and rapid / healthy growth of crops in a rotation area, comprising the following steps: Step one: ridging and digging foundation pits, after the rotation rice field is plowed, a drainage groove is opened for ridging, and foundation pits are dug at equal intervals, and then dried for 10-15 days; Step two: improvement treatment, using a transplanting hole improvement device, the compacted soil at the bottom of the foundation pit dug in step one is crushed and scattered, and at the same time, solid or liquid fertilizer is applied, so that the soil in the foundation pit is loose, the fertilizer, substrate and soil are uniformly mixed, and then a suitable transplanting hole is obtained; Step three: transplanting, transplanting the crop seedlings in the rotation area into the transplanting hole; Step four: topdressing management, irrigate nutrient solution when transplanting, generally 200-400ml / plant, irrigate nutrient solution 200ml per plant every 5-7 days in the first 2 weeks after transplanting, irrigate nutrient solution 2-3 times.

[0007] As a further improvement of the above scheme, in step four, the nutrient solution formula is diluted 2-4 times according to the concentration of the main elements in the MS medium. The mass ratio of the nutrient solution is: N: P2O5: K2O: CaO: MgO = (15-20): (15-20): (15-20): (2-5): (1-2.5).

[0008] As a further improvement of the above scheme, the application also provides a scheme for the transplanting hole improvement device in step two, including a main shaft, a driving mechanism connected to the main shaft to drive its rotation, and a sleeve seat connected to the bottom end of the main shaft, a plurality of crushing teeth are arranged on the outer side of the sleeve seat for crushing the soil during rotation. The main shaft is hollow, and the upper end of the main shaft is provided with a temporary storage container which is in communication with the inner cavity of the main shaft, and the temporary storage container is connected with the first storage container through a pipeline, and the pipeline connected with the temporary storage container is connected with a fan, and the fan fills air into the pipeline and blows the fertilizer in the first storage container into the temporary storage container, and continues to spray from the inner cavity of the main shaft and mix with the crushed soil.

[0009] As a further improvement of the above scheme, the lower end of the main shaft is fixedly provided with a plug head, and a plurality of exhaust holes are formed in the inner wall of the main shaft and are in communication with the outside, and the exhaust holes are close to the side of the plug head; A plurality of transmission pieces are fixedly arranged on the bottom of the sleeve seat, and the transmission pieces extend into the exhaust holes to drive the sleeve seat to rotate synchronously with the main shaft.

[0010] As a further improvement of the above scheme, a limiting table protruding outward is arranged on the outer wall of the main shaft, and the limiting table is used to block the downward movement of the transmission piece; A supporting table is also fixedly arranged on the outer wall of the main shaft, and the supporting table is located above the sleeve seat and is in communication with the top wall of the sleeve seat through a compression spring.

[0011] As a further improvement of the above scheme, a rotating sleeve is also rotatably arranged on the main shaft, and the rotating sleeve is fixedly connected with the transmission box of the driving mechanism; The outer side of the sleeve seat is provided with a cover, and the cover is used to cover the sleeve seat to block the soil from being thrown outward, and the cover and the rotating sleeve are connected with each other through an elastic component, so that the main shaft can maintain the continuous contact between the cover and the ground during the upward and downward crushing of the soil.

[0012] As a further improvement of the above-mentioned scheme, the temporary storage container is further provided with a drainage pipe for conveying liquid fertilizer, the drainage pipe extends downward into the main shaft, a support seat is fixedly arranged on the inner wall of the temporary storage container, a conveying pipe is arranged on the support seat and connected with the drainage pipe, the other end of the conveying pipe is connected with the second storage container, and a conveying pump is further arranged in communication with the conveying pipe for pumping the liquid fertilizer in the second storage container.

[0013] As a further improvement of the above-mentioned scheme, the support seat is fixedly provided with an elastic swing member, the elastic swing member is sleeved on the outer side of the conveying pipe and fixedly connected between the bottom end and the drainage pipe, a plurality of stirring rods are fixedly arranged on the side surface of the drainage pipe and in contact with the bottom wall of the temporary storage container for stirring the solid fertilizer in the temporary storage container.

[0014] As a further improvement of the above-mentioned scheme, the surface of the drainage pipe extending into the main shaft is provided with a wing, which is arranged to swing synchronously with the drainage pipe under the action of air flow.

[0015] As a further improvement of the above-mentioned scheme, the driving mechanism is further provided with a frame, the transmission box of the driving mechanism is rotatably arranged on the frame, and an electric push rod is further arranged on the frame, the output shaft of the electric push rod is connected with the transmission box to drive the main shaft to swing up and down, thereby facilitating the crushing of more soil in the foundation pit.

[0016] Compared with the prior art, the application has the following advantages: In the application, the soil in the foundation pit is dispersed and refined by using the transplanting hole improvement device before the crop seedling is planted, so that the transplanting hole can be improved, the soil hardening is reduced, the soil can provide a better growing environment, and the liquid or solid fertilizer is applied synchronously during the improvement process, so that the water and fertilizer environment of the transplanting hole is improved, the seedling can obtain better nutrition during the growth period, and the seedling can grow healthily.

[0017] In the application, the transplanting hole improvement device can be arranged synchronously, the position can be adjusted according to the actual distance between the foundation pits, the multiple foundation pits can be processed synchronously and once during the operation, and the processing efficiency is improved; the cover is arranged to block the crushed soil in the position of the transplanting hole during the rotating operation of the crushing tooth, the excessive outward spatter is avoided, the elastic member arranged between the cover and the rotating sleeve can promote the mutual movement between the cover and the rotating sleeve at a certain position, so that the crushing tooth can move downward during the crushing operation without being blocked by the cover, a deeper position can be crushed in the foundation pit, and the planting environment of the transplanting hole is improved.

[0018] In the application, by setting hollow in the main shaft, the first storage container and the second storage container are also connected, which realizes the simultaneous stirring and mixing of the solid fertilizer and the liquid fertilizer with the crushed soil during the transplanting hole improvement, and the fan connected on the first storage container can not only realize the feeding of the solid fertilizer through the gas blown by the fan, but also can increase the mixing effect between the fertilizer and the soil when the gas is blown out, and the blown gas can also be fully blown into the soil to make the soil around the transplanting hole be filled with the gas, thereby playing a part of loosening and anti-compaction role, so that the transplanted crops can more easily root and grow around the transplanting hole after normal rooting.

[0019] In the application, the crushing tooth and the sleeve seat are set in the form of mutual movement with the main shaft, so that the crushing tooth can crush the soil downward little by little under the elastic extrusion of the spring when the main shaft continuously moves downward, and the exhaust hole is also continuously changed in the space of exhaust due to the moving position of the crushing tooth, especially when the crushing tooth is at the top, the exhaust is the most, at this time, it also indicates that the soil is seriously compacted and needs more gas to blow, and with the crushing tooth crushing the compacted soil downward, the exhaust of the exhaust hole will gradually become smaller, and the exhaust gas enters from the lowermost part of the soil, which can fully ensure the loosening of the soil. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the application; Figure 2 It is a schematic diagram of the structure of the crushing tooth and the corresponding connecting device in the application; Figure 3 It is Figure 2 It is a schematic diagram of the local enlarged structure at A in the application; Figure 4 It is Figure 2 It is a schematic diagram of the local enlarged structure at B in the application; Figure 5 It is Figure 4 It is a schematic diagram of the sectional structure in the direction of C-C in the application; Figure 6 It is a schematic diagram of the structure of the lower segment of the main shaft; Figure 7 It is another connecting schematic diagram of the shade cover; Figure 8 It is a schematic diagram of the influence of the rooting agent nutrient solution on the agronomic characters of tobacco plants after 30 days of transplanting in the specific test process; Figure 9 It is a schematic diagram of the influence of the rooting agent nutrient solution on the agronomic characters of tobacco plants after 50 days of transplanting in the specific test process; Figure 10 Figure 7 is a schematic diagram of the effect of the root-promoting agent nutrient solution on the agronomic characteristics of tobacco plants after 65 days after transplanting in the specific test process; Figure 11 Figure 8 is a schematic diagram of the root morphological characteristics of different treatments after 30 days after transplanting in the specific test process; Figure 12 Figure 9 is a schematic diagram of the root activity characteristics of different treatments after 30 days after transplanting in the specific test process.

[0021] In the figure: 10, main shaft; 11, sleeve seat; 12, crushing teeth; 13, temporary storage container; 14, first storage container; 15, fan; 16, plug head; 17, extrusion spring; 18, rotating sleeve; 19, cover; 20, drainage pipe; 21, conveying pipe; 22, second storage container; 23, elastic swing piece; 24, frame; 25, electric push rod; 101, exhaust hole; 102, limiting table; 103, supporting table; 111, transmission piece; 131, supporting seat; 201, stirring rod; 202, fin. DETAILED DESCRIPTION

[0022] In order for those skilled in the art to better understand the technical solutions, the present application will be described in detail below in conjunction with the embodiments, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0023] As shown in Figures 1-2 , the specific scheme of the present embodiment is: a method for promoting early growth and rapid development / strong growth of crops in a rotation area, comprising the following steps: Step one: ridging and digging foundation pits, after the paddy field of the rotation is plowed, a drainage groove is opened and ridges are formed, and foundation pits are dug at equal intervals, and are dried for 10-15 days; Step two: improvement treatment, using a transplanting hole improvement device, the compacted soil at the bottom of the foundation pit dug in step one is crushed and dispersed, and a solid or liquid fertilizer is applied at the same time, so that the soil in the foundation pit is loosened, and the fertilizer, substrate and soil are uniformly mixed to obtain a suitable transplanting hole; Step three: transplanting, transplanting the crop seedlings of the rotation into the transplanting hole; Step four: fertilizer management, pouring nutrient solution when transplanting, generally 200-400 ml / plant, and pouring nutrient solution 200 ml / plant every 5-7 days for 2-3 times in the first 2 weeks after transplanting.

[0024] As shown in Figure 1 , as a preferred mode of the above embodiment, in step four, the nutrient solution formula is diluted 2-4 times according to the concentration of the macronutrients in the MS medium; The mass ratio of the nutrient solution is: N: P2O5: K2O: CaO: MgO = (15-20): (15-20): (15-20): (2-5): (1-2.5).

[0025] As Figures 1-7 shown, the application also provides a scheme of the transplanting hole improvement device in step two, which comprises a main shaft 10, and a driving mechanism connected to the main shaft 10 to drive the rotation of the main shaft 10, as Figure 1 shown, in the embodiment, the driving mechanism is a gear transmission box, wherein a transmission gear is fixedly connected to the main shaft 10, and the transmission gear is a pair of bevel gears, wherein the driving gear can slide along the axial direction on the driving shaft, so that in the application, one transmission shaft drives the rotation of multiple main shafts 10, and the distance between each main shaft 10 can be adjusted according to the actual situation, so as to adapt to the distance between different foundation pits, one end of the transmission shaft is connected to a driving motor, and Figure 1 in the embodiment, only one main shaft 10 and the transmission structure thereof are shown, and all of them are not drawn, and the arrangement direction of the transmission shaft is the front-rear direction perpendicular to the paper surface; and a vehicle frame 24, the transmission box of the driving mechanism is rotatably arranged on the vehicle frame 24, as shown in 1, specifically, a hinged plate is arranged at the bottom of the transmission box of the driving mechanism, the hinged plate can swing up and down around a hinge shaft, and the transmission box can move in the Figure 1 front-rear direction on the hinged plate to adjust the distance, and a locking mechanism is further arranged on the hinged plate to lock the positions of the transmission box and the hinged plate relative to each other after the distance is adjusted, the locking mechanism can adopt the mode that a handle drives a threaded shaft to rotate and extend to be clamped between the hinged plate, or other convenient modes, which can be selected according to needs.

[0026] In the embodiment, an electric push rod 25 is further arranged on the vehicle frame 24, the electric push rod 25 has multiple position sensors, which are used to detect the moving position of a valve core in the electric push rod 25, so as to control the extension length of the output shaft of the electric push rod 25, the output shaft of the electric push rod 25 is connected to the transmission box, specifically, is connected to the hinged plate at the bottom of the transmission box, so as to drive the main shaft 10 to swing up and down to facilitate the crushing of more soil in the pit foundation.

[0027] The bottom end of the main shaft 10 is drivingly connected to a sleeve seat 11, multiple crushing teeth 12 are arranged on the outer side of the sleeve seat 11, which are used to scatter and crush the soil during the rotation; the main shaft 10 is hollow, and the main shaft 10 is composed of multiple segments, as Figure 6As shown, the structure diagram of the lower section of the main shaft 10, the upper section is a hollow shaft structure, the two sections are drivingly arranged, the upper end of the main shaft 10 is provided with a temporary storage container 13 which is in communication with the inner cavity of the main shaft 10, one side of the temporary storage container 13 is connected with a first storage container 14 through a pipeline, the pipeline connected with the temporary storage container 13 is connected with a fan 15, the fan 15 fills air into the pipeline and blows the fertilizer in the first storage container 14 into the temporary storage container 13, and continues to spray from the inner cavity of the main shaft 10 and mix with the crushed soil, through the action of the fan 15, the solid fertilizer can be sent into the main shaft 10 and sprayed into the soil at the same time, especially when the crushing tooth 12 rotates to crush the soil, the mixing effect between the soil and the fertilizer can be increased, and the sprayed gas not only helps to transport the fertilizer, but also penetrates into the soil to improve the looseness of the soil, especially for the soil around the foundation pit, under the impact of the gas, the uncrushed soil environment around the transplanting hole can facilitate the seedling to grow roots and grow around after rooting.

[0028] As Figure 3 、 5 , 6, as a preferred mode of the above embodiment, the lower end of the main shaft 10 is fixedly provided with a plug head 16, the plug head 16 is screwed on the inner tube of the main shaft 10, the inner wall of the main shaft 10 has a plurality of exhaust holes 101 which are in communication with the outside, the exhaust holes 101 are close to the side of the plug head 16, and the top of the plug head 16 is a conical structure, which can facilitate the fertilizer to spread around; as Figure 3 、 5 , a plurality of driving pieces 111 are fixedly arranged at the bottom of the sleeve seat 11, in the embodiment, four driving pieces 111 are arranged, and each is tightly attached to each other and welded to the bottom end of the sleeve seat 11, the driving piece 111 extends into the exhaust hole 101 to drive the sleeve seat 11 to rotate synchronously with the main shaft 10, as Figure 3 ,

[0029] As a preferred mode of the above embodiment, the outer wall of the main shaft 10 is provided with a limiting table 102 which protrudes outward, the limiting table 102 is used to block the downward movement of the driving piece 111 and support the driving piece 111, so that the exhaust hole 101 always has a position in communication with the outside, thereby facilitating normal exhaust; the outer wall of the main shaft 10 is also fixedly provided with a supporting table 103, the supporting table 103 is located on the upper side of the sleeve seat 11 and is provided with a compression spring 17 between the top wall of the sleeve seat 11, as Figure 3As shown, the extrusion spring 17 has a downward persistent elastic extrusion force on the sleeve seat 11, in this embodiment, mainly when the main shaft 10 moves downward, the soil in the foundation pit will generate a large resistance to the crushing tooth 12, therefore under the action of the extrusion spring 17, the hard impact between the crushing tooth 12 and the soil can be avoided, especially when there are hard objects such as stones in the foundation pit, on the one hand, the crushing tooth 12 is protected, and on the other hand, in the place where the soil is hard, the crushing tooth 12 can be continuously and slowly extruded on the sleeve seat 11 under the action of the extrusion spring 17, thereby slowly crushing the soil downward, and the size of the exhaust hole 101 can be adjusted, especially when the sleeve seat 11 and the crushing tooth 12 are at the highest position, the size of the exhaust hole 101 is the largest at this time, and it also indicates that the soil is hard, so more fertilizer and loosening effect is needed; as the position of the sleeve seat 11 and the crushing tooth 12 decreases, the size of the exhaust hole 101 gradually decreases, most of the wind and fertilizer are blown into the lower layer of the soil, so the loosening performance and fertility of the soil can be improved.

[0030] As Figure 1 , 2 , 7, as a preferred mode of the above embodiment, the main shaft 10 is further provided with a rotating sleeve 18, and the rotating sleeve 18 and the transmission box of the driving mechanism are fixed to each other; the outer side of the sleeve seat 11 is provided with a cover 19, which is used to cover the sleeve seat 11 to block the earth from being thrown outward, and the cover 19 and the rotating sleeve 18 are connected to each other through an elastic component, so that the main shaft 10 maintains the persistent contact between the cover 19 and the ground during the activity of crushing the earth upward and downward; as Figure 2 shown, it is the first embodiment of installing the cover 19 in the application, in which the cover 19 and the outer surface of the rotating sleeve 18 are slidably arranged, and an elastic component for extruding the cover 19 downward is arranged between the top of the cover 19 and the limiting boss at the top of the rotating sleeve 18, and the elastic component is a spring.

[0031] As Figure 7 shown, it is the second embodiment of installing the cover 19 in the application, in which the cover 19 and the rotating sleeve 18 are provided with an elastic conical bellows, when the main shaft 10 and the rotating sleeve 18 move downward, the elastic bellows structure will be deformed, and the position of the cover 19 will not change, thereby meeting the needs of the upward and downward movement of the main shaft 10 and the rotating sleeve 18.

[0032] As Figure 1 , 2As shown in FIGS. 4, as a preferred mode of the above embodiment, the temporary storage container 13 is further provided with a drainage pipe 20 for conveying liquid fertilizer, the drainage pipe 20 extends downward into the main shaft 10, the pipe diameter of the drainage pipe 20 is smaller than the inner diameter of the main shaft 10 and does not exceed one fourth of the pipe diameter of the main shaft 10, a support seat 131 is fixedly arranged on the inner wall of the temporary storage container 13, a conveying pipe 21 is arranged on the support seat 131 and is connected with the drainage pipe 20, the conveying pipe 21 is a flexible pipe, the other end of the conveying pipe 21 is connected with a second storage container 22, and a conveying pump is further arranged in communication with the conveying pipe 21 for pumping the liquid fertilizer in the second storage container 22, after the liquid fertilizer in the second storage container 22 is introduced into the main shaft 10, the centrifugal spreading can be realized by the rotation of the main shaft 10, so as to achieve the mixing with the soil, and the drainage pipe 20 extending into the main shaft 10 can avoid the contact with the solid fertilizer in the temporary storage container 13, so as to reduce the phenomenon of the solid fertilizer clumping into lumps and achieve the dry-wet separation effect.

[0033] As a preferred mode of the above embodiment, the support seat 131 is fixedly provided with an elastic swing member 23, the elastic swing member 23 is sleeved on the outer side of the conveying pipe 21 and is fixed between the bottom end and the drainage pipe 20, specifically, the elastic swing member 23 is a spring arranged on the outer side of the conveying pipe 21 for providing the elastic force for the conveying pipe 21 to swing back to the middle, a plurality of stirring rods 201 (as shown in Figure 2 ) are fixedly arranged on the side surface of the drainage pipe 20, the stirring rods 201 are in contact with the bottom wall of the temporary storage container 13 for stirring the solid fertilizer in the temporary storage container 13, and a wing 202 (as shown in Figure 4 ) is arranged on the surface of the drainage pipe 20 extending into the main shaft 10 for swinging synchronously with the drainage pipe 20 under the action of the airflow, in the embodiment, since the solid fertilizer needs to be conveyed by the airflow, the solid fertilizer cannot be directly sent into the main shaft 10 and at least needs to pass through an intermediate device, therefore, in order to avoid the blockage, arching and other phenomena of the solid fertilizer on the intermediate device, the airflow can be used to break the arching, but the continuous and stable airflow is only used for conveying and the effect of breaking the arching is poor, therefore, the wing 202 can be blown by the airflow, and under the continuous disturbance of the wing 202 and the continuous stirring of the stirring rods 201, the solid fertilizer can be swept away, the arching can be broken, and the better anti-blocking effect can be achieved.

[0034] The specific working principle of the transplanting hole improvement device is as follows: the device is first hung on a tractor, when the foundation pit is processed, the spacing between different main shafts 10 needs to be adjusted and locked first; Then the solid or liquid fertilizer is loaded into the corresponding first storage container 14, second storage container 22, the motor connected with the driving mechanism is started, the motor drives the main shaft 10 to rotate, thereby driving the crushing teeth 12 to rotate, then the electric push rod 25 is controlled to retract the output shaft, driving the main shaft 10 to move downward, thereby making the crushing teeth 12 crush the soil in the foundation pit, and the fan 15 or the delivery pump is controlled to start, realizing the fertilizer into the foundation pit until the fertilizer is fully stirred, thereby becoming a suitable transplanting hole, after completion, the electric push rod 25 pushes the main shaft 10 to rise upward, preparing for the processing of the next foundation pit.

[0035] Specific test: Test site and conditions: Hengnan County, Hengyang City, Hunan Province, altitude 59~814.9 m, subtropical monsoon humid climate, annual average rainfall 1268.8 mm, rainfall in rainy season (April-September) accounts for about 70% of the annual total rainfall, dry season from October to the following March, the test soil is purple soil developed from purple shale parent material, the basic physicochemical property indexes are as follows: pH is 7.8, organic matter content is 24.51 g / kg, total nitrogen content is 1.48 g / kg, total phosphorus content is 1.03 g / kg, total potassium content is 26.70 g / kg Test design: The test tobacco variety is Yunyan 87, the test adopts a randomized block design, and different root stimulants are applied at the time of transplanting. A total of 4 treatments are set, T1: control (no root stimulant); T2: application of water-soluble fertilizer 75 kg / hm 2 (the nutrient solution described in step four in this application), 250 g is diluted with water to 10 L; T3: application of potassium fulvic acid 15 kg / hm 2 , 50 g is diluted with water to 10 L; T4: application of plant growth regulator, 1% naphthalene acetic acid is diluted by 100 times, the concentration is 100 mg / L. After the root stimulant is dissolved in water, 200 mL of solution is poured per hole at the time of transplanting, in order to ensure the consistency of water use amount of each treatment, 200 mL of water is poured per hole at the time of transplanting of CK. Each treatment is repeated 3 times, a total of 12 plots, a protection row is set around each plot, 120 plants are planted in each plot, the planting density is 1.27 m*0.48 m, and the plot area is 74 m 2 . The cultivation and fertilization measures are carried out according to the local high-quality tobacco production technical specification.

[0036] Test results: (1) Comparison of tobacco growth period in different root stimulant treatments Table 1 Tobacco growth period (month / day) in different treatments

[0037] (2) Influence of root stimulant on agronomic characters of tobacco plants, refer to the attached Figures 8-10 ; (3) The effect of the root-promoting agent on the root morphology and activity of the tobacco plants, refer to the attached Figures 11-12 ; The experimental results of the present study show that, during the transplanting of the tobacco plants, the application of the root-promoting agent nutrient solution in the present application can make the tobacco plants enter the re-growth stage earlier, and can positively affect the growth and development of the tobacco seedlings, mainly in that it can significantly promote the root growth of the tobacco seedlings, increase the root volume, root surface area, root length and root activity, and improve the agronomic characters and leaf characters of the tobacco plants. The improvement of these characters is the premise for increasing the proportion of the upper leaves and the rate of the superior tobacco leaves after curing, and at the same time, it also lays a material foundation for improving the yield and quality of the tobacco leaves and promoting the chemical components of the tobacco leaves to be in harmony.

[0038] It should be noted that, in the present text, the terms including, containing or any other variants thereof are intended to cover non-exclusive containing, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes the elements inherent to such process, method, article or device. The principles and implementation modes of the technical solutions of the present application are described by using specific examples in the present text, and the above examples are only used to help understand the method of the present application and its core idea. The above-mentioned is only the preferred implementation mode of the present application, and it should be pointed out that, due to the limitation of the expression, there are infinite specific structures in objective, and for the ordinary skilled person in the technical field, on the premise of not departing from the principle of the present application, a number of improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate way; these improvements, refinements, changes or combinations, or the direct application of the inventive concept and technical solutions to other occasions without improvement, shall be regarded as the protection scope of the present application.

Claims

1. A method for promoting early and vigorous growth of crops in a crop rotation area, characterized by, The method comprises the following steps: Step one: ridging and digging foundation pit, after the paddy field of crop rotation is ploughed, a drainage groove is opened and ridges are formed, and foundation pits are dug at equal intervals, and then the foundation pits are dried for 10-15 days; Step two: improvement treatment, the bottom of the foundation pit dug in step one is stirred and scattered by using a transplanting hole improvement device, and solid or liquid fertilizer is applied at the same time, so that the soil in the foundation pit is loose, the fertilizer, the substrate and the soil are uniformly mixed, and then a suitable transplanting hole is obtained; Step three: transplanting, the crop seedlings of crop rotation are transplanted into the transplanting hole; Step four: topdressing management, the nutrient solution is poured thoroughly during transplanting, generally 200-400 ml per plant, and the nutrient solution is poured every 5-7 days for 2-3 times after transplanting.

2. The method for promoting early and vigorous growth of crops in a rotation field according to claim 1, wherein In step four, the nutrient solution formula is diluted 2-4 times according to the concentration of the MS culture medium; The mass ratio of the nutrient solution is: N: P2O5: K2O: CaO: MgO = (15-20): (15-20): (15-20): (2-5): (1-2.5).

3. The method of promoting early and vigorous growth of crops in a rotation field according to claim 1, wherein, The transplanting hole improvement device in step two comprises a main shaft (10), a driving mechanism is connected to the main shaft (10) to drive the rotation of the main shaft (10), and the bottom end of the main shaft (10) is connected with a sleeve seat (11), a plurality of stirring teeth (12) are arranged on the outer side of the sleeve seat (11), and the stirring teeth (12) are used to scatter and stir the soil during rotation; The main shaft (10) is hollow, the upper end of the main shaft (10) is provided with a temporary storage container (13) which is in communication with the inner cavity of the main shaft (10), one side of the temporary storage container (13) is connected with a first storage container (14) through a pipeline, an air blower (15) is connected to the pipeline connected with the temporary storage container (13), the air blower (15) fills air into the pipeline and blows the fertilizer in the first storage container (14) into the temporary storage container (13), and then the fertilizer is continuously sprayed out of the inner cavity of the main shaft (10) and mixed with the stirred soil.

4. The method for promoting early and vigorous growth of crops in a rotation field according to claim 3, wherein The lower end of the main shaft (10) is fixedly provided with a plug head (16), and a plurality of exhaust holes (101) are arranged on the inner wall of the main shaft (10) and are in communication with the outside; A plurality of transmission pieces (111) are fixedly arranged on the bottom of the sleeve seat (11), and the transmission pieces (111) extend into the exhaust holes (101) to drive the sleeve seat (11) to rotate synchronously with the main shaft (10).

5. The method of promoting early and vigorous growth of crops in a rotation field according to claim 4, wherein A limiting table (102) protruding outward is arranged on the outer wall of the main shaft (10), and the limiting table (102) is used to block the downward movement of the transmission pieces (111); A supporting table (103) is further fixedly arranged on the outer wall of the main shaft (10), the supporting table (103) is located on the upper side of the sleeve seat (11), and a compression spring (17) is arranged between the top wall of the sleeve seat (11) and the supporting table (103).

6. The method of promoting early and vigorous growth of crops in a rotation field according to claim 3, wherein A rotating sleeve (18) is further rotatably arranged on the main shaft (10), and the rotating sleeve (18) and the transmission box of the driving mechanism are fixedly connected. The sleeve socket (11) is provided with a cover (19) outside, the cover (19) is used to cover the sleeve socket (11) and prevent the mud from being thrown outward, the cover (19) and the rotating sleeve (18) are connected by elastic components, so that the main shaft (10) keeps the cover (19) in contact with the ground during the activity of stirring the mud.

7. The method of promoting early and vigorous growth of crops in a rotation field according to claim 3, wherein The temporary storage container (13) is also provided with a drainage pipe (20) for conveying liquid fertilizer, the drainage pipe (20) extends downward into the main shaft (10), the inner wall of the temporary storage container (13) is fixedly provided with a support seat (131), the support seat (131) is provided with a conveying pipe (21) connected with the drainage pipe (20), the other end of the conveying pipe (21) is connected with the second storage container (22), and the conveying pipe (21) is also provided with a conveying pump in communication, which is used for pumping the liquid fertilizer in the second storage container (22).

8. The method of promoting early and vigorous growth of crops in a rotation field according to claim 7, wherein The support seat (131) is fixedly provided with an elastic swing member (23), the elastic swing member (23) is sleeved on the outer side of the conveying pipe (21) and is fixed between the bottom end and the drainage pipe (20), a plurality of stirring rods (201) are fixedly arranged on the side surface of the drainage pipe (20), the stirring rods (201) are in contact with the bottom wall of the temporary storage container (13), and the stirring rods (201) are used for stirring the solid fertilizer in the temporary storage container (13).

9. The method of promoting early and vigorous growth of crops in a rotation field according to claim 8, wherein, The surface of the drainage pipe (20) extending into the main shaft (10) is provided with a fin (202), which is used for swinging the fin (202) and the drainage pipe (20) synchronously under the action of air flow.

10. The method for promoting early and vigorous growth of crops in a rotation field according to any one of claims 3 to 9, wherein The transmission box of the driving mechanism is rotatably arranged on the frame (24), and the frame (24) is also provided with an electric push rod (25), the output shaft of the electric push rod (25) is connected with the transmission box, so as to drive the main shaft (10) to swing up and down, so as to stir more mud in the pit foundation.

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