A method and system for improving soil texture structure of a sticky reclaimed paddy soil

Abstract

The present application relates to the field of soil improvement, and discloses a method and system for improving the soil texture structure of clay reclamation paddy soil, comprising: obtaining aeolian sand and organic material, respectively performing material pretreatment to obtain qualified aeolian sand and qualified organic material; performing ploughing and loosening treatment on the soil of a target area to obtain clean soil after ploughing and loosening treatment; mixing the qualified aeolian sand, the qualified organic material and the clean soil to obtain mixed soil, and performing permeability evaluation and optimization on the mixed soil to obtain qualified mixed soil; laying a ploughed bottom layer on the qualified mixed soil, repeatedly performing flooding-drying cycle treatment on the ploughed bottom layer, and then laying a ploughing layer on the qualified mixed soil, and performing flatness adjustment and flatness optimization on the ploughing layer to realize improvement of the soil texture structure.The present application can effectively improve the structure of reclamation paddy soil, improve the soil permeability and fertility, and provide a good soil environment for the growth of rice.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of soil improvement, in particular to a method and system for improving the soil texture structure of clayey reclaimed paddy soil. BACKGROUND

[0002] Clayey reclaimed paddy soil refers to a type of soil encountered during land reclamation in rice planting areas. This type of soil usually has high clay content and is prone to clumping. In clayey reclaimed paddy soil, the high clay content leads to strong soil cohesion and the formation of clumps, affecting soil drainage. Poor drainage can result in water accumulation and waterlogging, affecting crop growth. The poor permeability of clayey reclaimed paddy soil restricts the flow of gases and water in the soil, affecting microbial activity and plant root growth. Therefore, appropriate soil improvement and management measures are needed, such as adding organic matter to improve soil structure, increase soil permeability and suitability, and promote crop growth. Therefore, this paper proposes a method and system for improving the soil texture structure of clayey reclaimed paddy soil to improve the soil texture structure, solve the problems of heavy soil texture, poor aeration, and low fertility in clayey reclaimed paddy soil, provide a good soil environment for rice growth, and thus improve the ability of the soil to support rice growth and the yield and quality of rice. SUMMARY

[0003] The present application overcomes the shortcomings of the prior art and provides a method and system for improving the soil texture structure of clayey reclaimed paddy soil.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows:

[0005] The present application provides a method for improving the soil texture structure of clayey reclaimed paddy soil, comprising the following steps:

[0006] Obtain aeolian sand and organic material, and separately pretreat the aeolian sand and the organic material to obtain qualified aeolian sand and qualified organic material;

[0007] The area where the clayey reclaimed paddy soil that needs to be improved in soil texture structure is located is taken as the target soil area, and the soil in the target area is plowed and loosened to obtain clean soil after plowing and loosening;

[0008] Mix the qualified aeolian sand, the qualified organic material, and the clean soil after plowing and loosening to obtain mixed soil, and optimize the mixed soil by permeability evaluation to obtain qualified mixed soil;

[0009] The qualified mixed soil is plowed into a subsoil layer in a target soil area, the subsoil layer is repeatedly subjected to flooding and drying cycles, and then the mixed soil is plowed into a plow layer, the plow layer is subjected to flatness adjustment and flatness optimization, and soil texture structure is improved.

[0010] Further, in a preferred embodiment of the present application, the step of pre-treating the aeolian sand to obtain qualified aeolian sand is specifically as follows:

[0011] The aeolian sand obtained and poured into the aeolian sand crushing equipment is subjected to volume control, so that the aeolian sand particle volume is maintained within a preset aeolian sand particle standard volume threshold, and qualified aeolian sand is obtained.

[0012] Further, in a preferred embodiment of the present application, the step of pre-treating the organic material to obtain qualified organic material is specifically as follows:

[0013] A first data network model based on rice variety characteristics and organic material types is constructed in advance;

[0014] A target rice variety planted on a clay reclaimed paddy soil is obtained, the variety characteristics of the target rice variety are matched based on the first data network model, and a target organic material meeting the planting of the target rice variety corresponding to the variety characteristics is matched;

[0015] A material sample of the target organic material is obtained, the average size of the material sample is calculated, and a material sample screen for screening the material sample is obtained;

[0016] The target material sample is screened through the material sample screen to obtain screened organic material, and the screened organic material is subjected to moisture content adjustment treatment through the moisture content control equipment to obtain qualified organic material.

[0017] Further, in a preferred embodiment of the present application, the step of adjusting the moisture content of the screened organic material through the moisture content control equipment to obtain qualified organic material is specifically as follows:

[0018] The screened organic material is subjected to real-time moisture content monitoring through a moisture meter of the moisture content control equipment, when the moisture content of the screened organic material is maintained within a preset screened organic material standard moisture content threshold, the moisture content adjustment of the screened organic material is stopped, and qualified organic material is obtained.

[0019] Further, in a preferred embodiment of the present application, the area where the clay reclaimed paddy soil needing soil texture structure improvement is located is taken as a target soil area, the soil in the target area is subjected to subsoil loosening treatment, and the step of obtaining clean soil after subsoil loosening treatment is specifically as follows:

[0020] The target soil area is measured in height by a GIS system to obtain the height information of the clean soil at different positions in the target soil area and the soil depth information at different positions in the target soil area.

[0021] The soil depth information at different positions in the target soil area is matched in a pre-constructed soil depth information and plowing power knowledge graph of a plowing machine to obtain different target plowing powers of the plowing machine.

[0022] The target plowing parameters are preset based on the target plowing power, the plowing parameters in the plowing machine are set to the target plowing parameters, and the plowing machine is controlled to plow and loosen the clean soil in the target soil area based on the target plowing parameters to obtain the clean soil after plowing and loosening.

[0023] Further, in a preferred embodiment of the present application, the step of mixing the qualified aeolian sand, the qualified organic material and the clean soil after plowing and loosening to obtain mixed soil is specifically:

[0024] The qualified aeolian sand and the qualified organic material are poured into a soil mixing device at a ratio of 1:1-1:3 for mixing treatment to obtain an organic mixture, and all the clean soil after plowing and loosening in the target soil area is subjected to soil mixing treatment with the organic mixture by the soil mixing device to obtain mixed soil.

[0025] Further, in a preferred embodiment of the present application, the step of optimizing the qualified mixed soil by permeability evaluation is specifically:

[0026] The sample collection area of the mixed soil is divided in the target soil area, and sampling treatment is performed in all sample collection areas of the mixed soil to obtain different mixed soil samples.

[0027] The daily average temperature and the daily average humidity of the target soil area are matched from a second network model of a pre-constructed target average temperature, target average humidity and standard permeability threshold value to control the penetration of the penetration liquid on different mixed soil samples, and the penetration pressure and the penetration flow rate of the penetration liquid in all mixed soil samples are monitored in real time by a penetration meter to obtain the current penetration state, and the standard permeability threshold value corresponding to the target soil area to be detected is obtained from the second network model for permeability evaluation.

[0028] If the permeability of the mixed soil sample under the current penetration state is maintained within the standard permeability threshold value, the corresponding mixed soil sample is labeled as a normal permeability sample, and the mixed soil corresponding to the normal permeability sample is labeled as a qualified mixed soil.

[0029] If the permeability of the mixed soil sample at the current permeation state is not within the standard permeability threshold, the corresponding mixed soil sample is labeled as a permeability abnormal sample, and the collection area corresponding to the permeability abnormal sample is labeled as a permeability abnormal collection area.

[0030] When there is a permeability abnormal collection area in the target soil area, the mixed soil in the permeability abnormal collection area is subjected to soil permeability optimization processing to obtain qualified mixed soil.

[0031] Further, in a preferred embodiment of the present application, the step of when there is a permeability abnormal collection area in the target soil area, the mixed soil in the permeability abnormal collection area is subjected to soil permeability optimization processing to obtain qualified mixed soil is specifically:

[0032] In all permeability abnormal collection areas, the content of the abnormal area organic matter mixture in the mixed soil is calculated, as well as the standard content of the organic matter mixture in the non-permeability abnormal collection area.

[0033] If the content of the abnormal area organic matter mixture is less than the standard content of the organic matter mixture, the corresponding permeability abnormal collection area is labeled as a first type of abnormal area, and if the content of the abnormal area organic matter mixture is greater than the standard content of the organic matter mixture, the corresponding permeability abnormal collection area is labeled as a second type of abnormal area.

[0034] In all first type of abnormal areas, a first difference between the content of the abnormal area organic matter mixture and the standard content of the organic matter mixture is calculated, and an organic matter supplement mixture is obtained based on the first difference.

[0035] The soil mixing device is controlled to perform soil secondary mixing processing of the organic matter supplement mixture with the mixed soil in all first type of abnormal areas, and at the same time, secondary permeation testing is performed during the soil secondary mixing processing. When the permeability of the soil in the first type of abnormal area is maintained within the standard permeability threshold, the soil secondary mixing processing is stopped, and qualified mixed soil is obtained.

[0036] In all second type of abnormal areas, a second difference between the content of the abnormal area organic matter mixture and the standard content of the organic matter mixture is calculated, and clean soil after ploughing is supplemented in the mixed soil of the second type of abnormal area based on the second difference.

[0037] The soil mixing device is controlled to perform soil secondary mixing processing in the second type of abnormal area, and at the same time, secondary permeation testing is performed during the soil secondary mixing processing. When the permeability of the soil in the second type of abnormal area is maintained within the standard permeability threshold, the soil secondary mixing processing is stopped, and qualified mixed soil is obtained.

[0038] Further, in a preferred embodiment of the present application, the step of improving the soil texture structure by plowing the bottom layer of the qualified mixed soil in the target soil area, repeatedly treating the plowed bottom layer with flood-dry cycles, and then plowing the tillage layer with the mixed soil, and adjusting and optimizing the flatness of the tillage layer is specifically as follows:

[0039] plowing the bottom layer of the qualified mixed soil in the target soil area by the soil laying equipment, repeatedly treating the plowed bottom layer with flood-dry cycles, and then plowing the tillage layer with the mixed soil;

[0040] evaluating and analyzing the flatness of the laying flatness to-be-evaluated soil in the target soil area by the level meter to obtain the flatness of the laying flatness to-be-evaluated soil, and if the flatness of the laying flatness to-be-evaluated soil is not within the preset standard flatness threshold, obtaining the specification parameter table of the soil laying equipment, wherein the specification parameter table of the soil laying equipment records the standard adjustment strength of the soil laying equipment for different flatness of the soil;

[0041] introducing the flatness of the laying flatness to-be-evaluated soil into the soil laying equipment, and in the soil laying equipment, generating the target adjustment strength of the flatness of the laying flatness to-be-evaluated soil according to the specification parameter table of the soil laying equipment, so as to control the soil laying equipment to adjust the flatness of the laying flatness to-be-evaluated soil in the target soil area according to the target adjustment strength, so that the flatness of the laying flatness to-be-evaluated soil in the target soil area is maintained within the standard flatness threshold to improve the soil texture structure.

[0042] The second aspect of the present application also provides a soil texture structure improvement system for sticky reclaimed paddy soil, which comprises a memory and a processor, and the memory stores a soil texture structure improvement method, and the soil texture structure improvement method is executed by the processor to implement the following steps:

[0043] obtaining aeolian sand and organic material, and respectively pre-treating the aeolian sand and the organic material to obtain qualified aeolian sand and qualified organic material;

[0044] taking the area where the sticky reclaimed paddy soil that needs to be improved in soil texture structure is located as a target soil area, and plowing the soil in the target area to obtain clean soil after plowing;

[0045] mixing the qualified aeolian sand, the qualified organic material, and the clean soil after plowing to obtain mixed soil, and obtaining qualified mixed soil by optimizing the permeability of the mixed soil;

[0046] The qualified mixed soil is laid on the plough bottom layer of the target soil area, the plough bottom layer is repeatedly treated by flooding and drying, then the mixed soil is laid on the plough layer, the plough layer is adjusted and optimized in flatness, and the soil texture structure is improved.

[0047] The technical defects in the background art are solved, and the application has the following beneficial effects: the aeolian sand and organic material are pretreated to obtain qualified aeolian sand and qualified organic material, all the soils in the target soil area are ploughed to obtain clean soil after ploughing, the qualified aeolian sand, the qualified organic material and the clean soil after ploughing are mixed and treated to obtain qualified mixed soil, the qualified mixed soil is laid on the plough bottom layer, the plough bottom layer is repeatedly treated by flooding and drying, then the mixed soil is laid on the plough layer, the plough layer is adjusted and optimized in flatness, and the soil texture structure is improved. The application can effectively improve the structure of the reclaimed paddy soil, improve the soil permeability and fertility, provide a good soil environment for the growth of rice, and finally realize the optimization of the hierarchical structure of the clayey reclaimed paddy soil, improve the yield and quality of rice. BRIEF DESCRIPTION OF DRAWINGS

[0048] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0049] Figure 1 A flow chart of a soil texture structure improvement method of clayey reclaimed paddy soil is shown;

[0050] Figure 2 A method flow chart of soil ploughing and soil mixing in a target soil area is shown;

[0051] Figure 3 A soil texture structure improvement system of clayey reclaimed paddy soil is shown. DETAILED DESCRIPTION

[0052] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0053] In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can be practiced in other manners different from those described herein, therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0054] Figure 1 A flow chart of a method for improving soil texture structure of viscous reclaimed paddy soil is shown, comprising the following steps:

[0055] S102: Obtain aeolian sand and organic material, and respectively perform material pretreatment on the aeolian sand and the organic material to obtain qualified aeolian sand and qualified organic material;

[0056] The purpose of the present application is to provide a method for improving soil texture structure of viscous reclaimed paddy soil to solve the problems of heavy soil texture, poor aeration and low fertility, so as to provide a good soil environment for rice.

[0057] In the present embodiment, in order to realize the above-mentioned soil texture structure improvement, it is necessary to add an appropriate amount of organic material, such as organic fertilizer, mineral fertilizer, etc., to the soil for improving the permeability of the soil. When adding the organic material, the organic material needs to be screened and treated before being added to the soil together with the aeolian sand. Therefore, step S102 specifically includes two aspects of content of treatment of the organic material and treatment of the aeolian sand, which are described below.

[0058] In the present embodiment, the process of obtaining qualified aeolian sand specifically comprises: obtaining aeolian sand and aeolian sand crushing equipment, pre-setting an aeolian sand particle standard volume threshold value, pouring the aeolian sand into the aeolian sand crushing equipment for aeolian sand particle volume control, maintaining the aeolian sand particle volume within the aeolian sand particle standard volume threshold value, and obtaining the qualified aeolian sand.

[0059] It should be noted that aeolian sand is a kind of accumulated sand particles formed by wind transport and deposition, which has the characteristics of small particle size, and the aeolian sand layering structure is obvious. Mixing the aeolian sand with the organic material and adding them to the soil helps to improve the soil texture structure, making the soil more conducive to rice planting.

[0060] In the present embodiment, the process of obtaining qualified organic material specifically includes the following content:

[0061] A first data network model based on the characteristics of rice varieties and the types of organic material is constructed in advance.

[0062] Obtain a target rice variety planted on the viscous reclaimed paddy soil, match the variety characteristics of the target rice variety based on the first data network model, and the target organic material corresponding to the variety characteristics that meets the planting of the target rice variety.

[0063] Obtaining a material sample of the target organic material, calculating the average size of the material sample to obtain a screen for screening the material sample, and marking the screen as a material sample screen.

[0064] Screening the target material sample through the material sample screen to obtain a screened organic material, and performing moisture content adjustment processing on the screened organic material through a moisture content control device to obtain qualified organic material.

[0065] Real-time moisture content monitoring of the screened organic material through a moisture meter of the moisture content control device, and when the moisture content of the screened organic material is maintained within a preset screened organic material standard moisture content threshold, stopping the moisture content adjustment of the screened organic material to obtain qualified organic material.

[0066] It should be noted that the adjustment of the moisture content is to control the moisture content of the organic material, which can be controlled by devices such as dryers, dehumidifiers, humidifiers, etc., and the moisture content of the organic material needs to be controlled between 30%-40%, and the organic material in this range can maximize the soil fertility and water permeability. At the same time, the pretreatment also needs to control the particle size of the aeolian sand, and the particle size of the aeolian sand is controlled between 0.1-0.5mm, i.e. the aeolian sand particle standard volume threshold, which can be controlled by the aeolian sand crushing equipment. The present application can obtain qualified aeolian sand and qualified organic material by pretreating the aeolian sand and organic material, and provide conditions for improving the texture structure of the soil.

[0067] S104: The region where the clayey reclaimed paddy soil that needs to be improved in soil texture structure is located is taken as a target soil region, and the soil in the target region is plowed and loosened to obtain clean soil after plowing and loosening.

[0068] In this embodiment, after determining the region for improving the soil texture structure, the region is marked as a target soil region, and after introducing a GIS system to measure the elevation of the target soil region, the elevation information of the soil at different positions in the target soil region and the soil depth information at different positions in the target soil region are obtained. The GIS system is a satellite remote sensing system that can measure the elevation information of the soil, and the elevation information is the distance from the surface of the soil to the bottom rock layer of the soil. Through the elevation information, the soil depth at different positions in the target soil region can be obtained.

[0069] It should be noted that how the soil in the improved area is more compact, the soil improvement is not conducive, and the permeability, water retention and other effects will be reduced, which is not conducive to the growth of rice roots and water absorption. Therefore, the soil needs to be plowed and loosened. The soil after plowing and loosening has good aeration, which is more conducive to the growth of rice planting. Before plowing and loosening, the sundries in the soil, such as gravel, branches, garbage and the like, need to be cleaned to prevent affecting the mixing efficiency and affecting the planting effect of rice in the subsequent mixing, and to obtain clean soil after plowing and loosening. The soil can be plowed and loosened by using a plowing machine. The plowing machine continuously stirs the soil in the soil to achieve the purpose of plowing and loosening. The depth of the soil needs to be obtained when the plowing machine is plowing and loosening. The soil depth in the same area may be different. The power, intensity and other parameters of the plowing machine need to be set when plowing and loosening the soil of different depths. Generally, the deeper the soil depth, the higher the power needs to be set, and the higher the power, the greater the corresponding plowing intensity.

[0070] In the embodiment, the corresponding plowing power is determined by the pre-constructed soil depth information and plowing machine plowing power knowledge graph. The knowledge graph can be pre-set in the first data network model. The soil depth information and the plowing machine plowing power knowledge graph are matched in the first data network model, so as to match the soil depth information of different positions in the target soil area with the corresponding target plowing power of the plowing machine according to the knowledge graph. The knowledge graph expresses different soil depths corresponding to different plowing powers of the plowing machine.

[0071] Based on the knowledge graph, the target plowing power corresponding to the soil depth information of different positions in the target soil area is obtained. Based on the target plowing power, the target plowing parameters are pre-set, the plowing parameters in the plowing machine are set to the target plowing parameters, and the plowing machine is controlled to plow and loosen the clean soil in the target soil area based on the target plowing parameters, to obtain the clean soil after plowing and loosening.

[0072] It should be noted that since the power corresponding to different depths of soil is different, the soil depth-plowing machine plowing power knowledge graph is used to obtain the required plowing power of the plowing machine on the soil at different positions. The soil is plowed and loosened in real time in the target soil area. The plowing power is adjusted in real time according to the depth during the plowing process, so as to realize the adjustment of the plowing intensity.

[0073] S106: The qualified wind sand, the qualified organic material and the clean soil after plowing and loosening are mixed to obtain mixed soil. The qualified mixed soil is obtained by optimizing the permeability evaluation of the mixed soil.

[0074] In the embodiment, the qualified wind sand and the qualified organic material are poured into a soil mixing device in a ratio of 1:1-1:3 (specifically according to the clay content of the soil) for mixing treatment to obtain an organic mixture. Then, all the clean soil after ploughing and loosening in the target soil area is mixed with the organic mixture by the soil mixing device to obtain mixed soil.

[0075] The sample collection area of the mixed soil is divided in the target soil area, and sampling is performed in all sample collection areas of the mixed soil to obtain different mixed soil samples.

[0076] Based on the historical data network, the daily average temperature and the daily average humidity of the target soil area are obtained and calibrated as the target average temperature and the target average humidity. The penetration liquid and the penetration degree meter are obtained, and the penetration liquid is controlled to perform penetration test on different mixed soil samples under the condition of the target average temperature and the target average humidity. The penetration pressure and the penetration flow rate of the penetration liquid in all mixed soil samples are monitored in real time by the penetration degree meter.

[0077] Based on the penetration pressure and the penetration flow rate of the penetration liquid in the mixed soil sample, the current penetration state is obtained. Based on the historical data network, the corresponding standard permeability of the mixed soil sample under the current penetration state is searched and defined as the standard permeability threshold.

[0078] If the permeability of the mixed soil sample under the current penetration state is maintained within the standard permeability threshold, the corresponding mixed soil sample is calibrated as a normal permeability sample, and the mixed soil corresponding to the normal permeability sample is calibrated as qualified mixed soil.

[0079] If the permeability of the mixed soil sample under the current penetration state is not within the standard permeability threshold, the corresponding mixed soil sample is calibrated as an abnormal permeability sample, and the collection area corresponding to the abnormal permeability sample is calibrated as an abnormal permeability collection area.

[0080] When there is an abnormal permeability collection area in the target soil area, the mixed soil in the abnormal permeability collection area is subjected to soil permeability optimization treatment to obtain qualified mixed soil.

[0081] S108: In the target soil area, the qualified mixed soil is laid on the plough bottom layer. After repeated flooding-drying cycle treatment of the plough bottom layer, the qualified mixed soil is used for plough layer laying. After flatness adjustment and flatness optimization of the plough layer, soil texture structure improvement is realized.

[0082] In the embodiment, when plowing and laying the subsoil and the plow layer in the target soil area, a soil laying device needs to be used to perform soil laying treatment on the qualified mixed soil in the target soil area, so as to obtain the laying flatness to be evaluated soil. The soil laying treatment is to use the qualified mixed soil as the material to plow the subsoil and then to plow the plow layer. In order to realize the flatness during the soil laying process, the leveling degree of the laying flatness to be evaluated soil is evaluated and analyzed by using the level meter, so as to obtain the flatness of the laying flatness to be evaluated soil. The flatness of the laying flatness to be evaluated soil is analyzed by using the preset standard flatness threshold value. If the flatness of the laying flatness to be evaluated soil is not within the standard flatness threshold value, the specification parameter table of the soil laying device is obtained. The specification parameter table of the soil laying device records the standard adjustment strength of the soil laying device for different flatness of the soil. The flatness of the laying flatness to be evaluated soil is introduced into the soil laying device. In the soil laying device, the adjustment strength of the flatness of the laying flatness to be evaluated soil is generated according to the specification parameter table of the soil laying device, which is calibrated as the target adjustment strength. The soil laying device is controlled to adjust the flatness of the laying flatness to be evaluated soil in the target soil area according to the target adjustment strength, so that the flatness of the laying flatness to be evaluated soil in the target soil area is maintained within the standard flatness threshold value.

[0083] It should be noted that after obtaining the qualified mixed soil, the qualified mixed soil is used to lay the subsoil and the plow layer, respectively. The plow layer is a layer of soil on the surface of the soil, which contains most of the organic matter and root system, and is the main area for crop growth and root development, and is used for fertilization, irrigation, etc. The subsoil refers to a layer of soil below the surface of the soil, which is usually located below the plow layer and is a soil layer below the plow layer, and has the characteristics of high compactness and easy storage of nutrients. After the subsoil is laid and constructed to meet the standard, the plow layer is constructed. The laid subsoil is treated by repeated flooding-drying cycle, and then the plow layer is laid by using the qualified mixed soil.

[0084] After the subsoil and plough layer are laid, the flatness of the laid soil needs to be analyzed and optimized, and higher flatness is conducive to subsequent seeding and management. A level meter is a device for monitoring flatness. If the flatness is low, the adjustment intensity for the soil flatness is obtained in the specification parameter table of the soil laying device according to the different flatness, because the flatness is larger, the intensity required is also larger, and the flatness of different positions in the target soil area is different, so the intensity required needs to be intelligently controlled. After obtaining the target adjustment intensity, the soil laying device is used to adjust the flatness, so that the laying flatness of the target soil area is maintained within the standard flatness threshold. The present application can evaluate the flatness of qualified mixed soil, and adjust the flatness of soil with low flatness, improve the adhesion and compactness of soil, and help rice seeding and management. In the experimental process, after 10 cycles of irrigation and drying treatment, the clay content of the subsoil increased by about 15%, and the compactness increased by about 10%. At the same time, the wetting front of the soil decreased by about 20%. These data show that the method of the present application can effectively improve the adhesion and compactness of the soil, and improve the water and fertilizer retention of the soil.

[0085] Figure 2 A method flow chart for soil ploughing and soil mixing of a target soil area is shown, including the following steps:

[0086] S202: mixing qualified aeolian sand, qualified organic material and clean soil after ploughing to obtain mixed soil.

[0087] S204: evaluating the permeability of all mixed soil in the target soil area.

[0088] In this embodiment, in order to realize the permeability evaluation of all mixed soil in the target soil area, a second network model based on daily average temperature, daily average humidity and standard permeability threshold is established in advance, which records the daily average temperature, daily average humidity and other data of different target soil areas, and the corresponding standard permeability threshold is used as a comparison basis for the real-time acquisition of the corresponding data of the current different target soil areas.

[0089] When a certain target soil needs to be detected for permeability, the target soil is defined as a to-be-detected target soil, a sample collection area of mixed soil is divided in the to-be-detected target soil area, and different mixed soil samples are obtained by sample collection in the sample collection area. The first preset condition based on the daily average temperature data and the daily average humidity data matched with the to-be-detected target soil is obtained from the second network model, and the osmotic liquid is controlled to perform permeability test on the different mixed soil samples under the first preset condition. The osmotic pressure and the osmotic flow rate of the osmotic liquid in all the mixed soil samples are monitored in real time by the osmometer, so as to obtain the current permeability state of the mixed soil samples; and the standard permeability threshold value corresponding to the to-be-detected target soil area is obtained from the second network model to perform permeability evaluation.

[0090] In the embodiment, the specific evaluation process is as follows:

[0091] If the permeability of the mixed soil sample in the current permeability state is maintained within the standard permeability threshold value, the corresponding mixed soil sample is marked as a normal permeability sample, and the mixed soil corresponding to the normal permeability sample is marked as qualified mixed soil.

[0092] If the permeability of the mixed soil sample in the current permeability state is not within the standard permeability threshold value, the corresponding mixed soil sample is marked as an abnormal permeability sample, and the collection area corresponding to the abnormal permeability sample is marked as an abnormal permeability collection area.

[0093] It should be noted that after obtaining the mixed soil, its permeability needs to be evaluated to ensure that it is suitable for rice planting. The soil thickness of the plough layer should be maintained at 15-20 cm and good permeability should be maintained. The thickness of the organic material and aeolian sand laid on the surface is 5 cm. The soil thickness of the plow subsoil should be maintained at 8-10 cm and needs to have a certain degree of compaction. The mixed thickness of the organic material and aeolian sand laid on the upper layer is about 2-3 cm. After obtaining the mixed soil, a permeability test needs to be performed to evaluate its permeability. A higher permeability of the plough layer (saturated hydraulic conductivity of 10-50 cm / h) is conducive to the growth of rice roots and water absorption. The plow subsoil with a certain degree of compaction (saturated hydraulic conductivity of 0.5-10 cm / h) can play a role in water and fertilizer conservation. The permeability test is performed on the mixed soil, and the permeation pressure and permeation flow rate obtained after the permeability test are analyzed to obtain the permeation state. The combination of permeation pressure and permeation flow rate represents different permeation states, and through these states, the permeability of the mixed soil can be evaluated. Under the current temperature and humidity conditions, the standard permeability threshold can be obtained through historical data network retrieval, which is usually 30-50 cm / h. Various historical data are stored in the second network model, including but not limited to various standard data of the soil, etc. The mixed soil is sampled in different zones to ensure the accuracy and diversity of the test. Finally, according to the relationship between the permeability and the standard permeability threshold, it is determined whether there is any mixed soil with abnormal permeability in the different collection areas.

[0094] Through the above steps, the permeability and compaction of the mixed soil can be ensured to be suitable for the growth of rice, thereby improving the yield and quality of rice.

[0095] S206: When there is an abnormal permeability collection area in the target soil area, the soil permeability optimization processing is performed on the mixed soil in the abnormal permeability collection area.

[0096] In this embodiment, when an abnormal permeability collection area is found according to the evaluation in step S204, the content of the organic matter mixture in the mixed soil in the abnormal permeability collection area is calculated, which is marked as the abnormal area organic matter mixture content, and the content of the organic matter mixture in the non-permeability abnormal collection area is calculated, which is marked as the organic matter mixture standard content. The content of the organic matter mixture in the abnormal area is compared with the content of the organic matter mixture in the standard area. If the content of the organic matter mixture in the abnormal area is less than the content of the organic matter mixture in the standard area, the corresponding abnormal permeability collection area is marked as a first type of abnormal area. If the content of the organic matter mixture in the abnormal area is greater than the content of the organic matter mixture in the standard area, the corresponding abnormal permeability collection area is marked as a second type of abnormal area.

[0097] In all the first-class abnormal regions, a first difference between the content of the organic material mixture in the abnormal region and the standard content of the organic material mixture is calculated, which is defined as a first-class content difference, and based on the first-class content difference, an organic material supplement mixture is obtained;

[0098] The soil mixing device is controlled to perform secondary soil mixing of the organic material supplement mixture and the mixed soil in all the first-class abnormal regions, and the secondary permeation test is performed simultaneously during the secondary soil mixing, and when the permeability of the soil in the first-class abnormal region is maintained within the standard permeability threshold, the secondary soil mixing is stopped, and qualified mixed soil is obtained.

[0099] In all the second-class abnormal regions, a second difference between the content of the organic material mixture in the abnormal region and the standard content of the organic material mixture is calculated, which is defined as a second-class content difference, and based on the second difference, clean soil after ploughing and loosening is supplemented in the mixed soil in the second-class abnormal region.

[0100] The soil mixing device is controlled to perform secondary soil mixing in the second-class abnormal region, and the secondary permeation test is performed simultaneously during the secondary soil mixing, and when the permeability of the soil in the second-class abnormal region is maintained within the standard permeability threshold, the secondary soil mixing is stopped, and qualified mixed soil is obtained.

[0101] It should be noted that if a permeability abnormal collection region appears, i.e., the permeability of the mixed soil in the region is abnormal, the permeability of the mixed soil in the permeability abnormal collection region needs to be optimized, because the mixed soil with abnormal permeability may cause poor drainage, water stagnation in the soil, increase the content of water in the soil, cause insufficient oxygen content in the soil, affect the respiration and growth of crop roots, or cause accumulation of harmful substances such as salt and heavy metals in the soil, thereby affecting the growth and health of plants, and even causing soil poisoning. Therefore, the permeability needs to be optimized. The reason for the abnormal permeability of the mixed soil may be that the content of the organic material is too high or too low, or the mixing is not thorough enough. Therefore, the content of the organic material in the current permeability abnormal collection region needs to be calculated and analyzed with the standard content, so as to classify the permeability abnormal collection region into a first-class abnormal region and a second-class abnormal region. The content of the organic material in the first-class abnormal region is less, and the content of the organic material in the second-class abnormal region is more, and different methods need to be taken. In the first-class abnormal region, the organic material needs to be supplemented, the content of the organic material that needs to be supplemented, i.e., the first-class content difference, is calculated, and an organic material supplement mixture is obtained.

[0102] In the embodiment, the content of the organic material supplement mixture is equal to a first type content difference value, and the organic material supplement mixture is mixed with the mixed soil in all first type abnormal areas by a soil mixing device for secondary soil mixing, so that the content of the organic material is supplemented to be equal to the standard content, and the secondary mixing improves the permeability, so that the qualified mixed soil is obtained. In the second type abnormal area, the content of the organic material is large, so that the clean soil after ploughing and loosening is supplemented to reduce the content of the organic material. A second type content difference value is obtained, and based on the second type content difference value, the soil mixing device is controlled to supplement the clean soil after ploughing and loosening in the second type abnormal area and perform secondary soil mixing to obtain the qualified mixed soil. The permeability of the mixed soil is improved, and the qualified mixed soil is obtained.

[0103] As shown in Figure 3 The second aspect of the present application further provides a soil texture structure improvement system for viscous reclaimed paddy soil, which comprises a memory 31 and a processor 32, the memory 31 stores a soil texture structure improvement method, and the processor 32 executes the soil texture structure improvement method to realize the following steps:

[0104] The aeolian sand and the organic material are obtained, and the aeolian sand and the organic material are pretreated to obtain qualified aeolian sand and qualified organic material;

[0105] The soil ploughing and loosening treatment is performed on the area where the viscous reclaimed paddy soil needs to be improved, and the clean soil after ploughing and loosening is obtained;

[0106] The qualified aeolian sand, the qualified organic material and the clean soil after ploughing and loosening are mixed to obtain the mixed soil, and the permeability of the mixed soil is evaluated and optimized;

[0107] The qualified mixed soil is laid on the ploughed bottom layer in the target soil area, and after the repeated flooding-drying cycle treatment of the ploughed bottom layer, the tillage layer is laid with the qualified mixed soil, and the flatness adjustment and optimization of the tillage layer are performed to realize the soil texture structure improvement.

[0108] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for improving the soil texture and structure of cohesive reclaimed paddy soil, characterized in that, Includes the following steps: Aeolian sand and organic materials are obtained, and the aeolian sand and organic materials are pretreated respectively to obtain qualified aeolian sand and qualified organic materials. The area where the clayey reclaimed paddy soil that needs to be improved in terms of soil texture and structure is located is taken as the target soil area. The soil in the target soil area is plowed and loosened to obtain clean soil after plowing and loosening. The qualified aeolian sand, the qualified organic material, and the clean soil after plowing and loosening are mixed to obtain mixed soil. The qualified mixed soil is obtained by evaluating and optimizing the permeability of the mixed soil. In the target soil area, a plow layer of qualified mixed soil is laid. After repeated watering-drying cycle treatment of the plow layer, a topsoil layer of qualified mixed soil is laid. After adjusting and optimizing the flatness of the topsoil layer, the soil texture and structure are improved. The specific steps for pretreating the organic material to obtain qualified organic material are as follows: A first data network model based on rice variety characteristics and organic material types is pre-constructed; The target rice variety for planting on cohesive reclaimed paddy soil is obtained, and the variety characteristics of the target rice variety are matched based on the first data network model, as well as the target organic materials that meet the requirements for planting the target rice variety. Obtain a material sample of the target organic material, calculate the average size of the material sample, and obtain a material sample sieve for screening the material sample; The target material sample is sieved through the material sample sieve to obtain sieved organic material. The moisture content of the sieved organic material is adjusted by the moisture content control equipment to obtain qualified organic material. The specific steps for adjusting the moisture content of screened organic materials using moisture content control equipment to obtain qualified organic materials are as follows: The moisture content of the screened organic material is monitored in real time by a moisture meter of a moisture content control device. When the moisture content of the screened organic material is maintained within the preset standard moisture content threshold, the moisture content adjustment of the screened organic material is stopped, and qualified organic material is obtained.

2. The method for improving the soil texture and structure of cohesive reclaimed paddy soil according to claim 1, characterized in that, The specific steps for pretreating the aeolian sand to obtain qualified aeolian sand are as follows: The volume of aeolian sand obtained and poured into the aeolian sand is controlled by the aeolian sand crushing equipment, so that the volume of aeolian sand particles is maintained within the preset standard volume threshold of aeolian sand particles, thus obtaining qualified aeolian sand.

3. The method for improving the soil texture and structure of cohesive reclaimed paddy soil according to claim 1, characterized in that, The specific steps for identifying the area containing the cohesive reclaimed paddy soil requiring soil texture and structure improvement as the target soil area, and for loosening the soil in the target soil area to obtain clean soil after loosening are as follows: The elevation of the target soil area is measured by a GIS system to obtain the elevation information of clean soil at different locations within the target soil area, as well as the soil depth information at different locations within the target soil area. In a pre-built knowledge graph based on soil depth information and plow power, soil depth information at different locations within the target soil area is matched to the different target plow powers of the plow. Based on the target plowing power, the target plowing parameters are preset, the plowing parameters in the plower are set to the target plowing parameters, and the plower is controlled to loosen the clean soil in the target soil area based on the target plowing parameters, so as to obtain the loosened clean soil.

4. The method for improving the soil texture and structure of cohesive reclaimed paddy soil according to claim 1, characterized in that, The specific steps for mixing the qualified aeolian sand, the qualified organic material, and the clean soil after plowing and loosening to obtain the mixed soil are as follows: The qualified aeolian sand and the qualified organic material are mixed in a ratio of 1:1 to 1:3 into a soil mixing device to obtain an organic mixture. Then, all the clean soil in the target soil area that has been plowed and loosened is mixed with the organic mixture in the soil mixing device to obtain mixed soil.

5. The method for improving the soil texture and structure of cohesive reclaimed paddy soil according to claim 4, characterized in that, The specific steps for obtaining qualified mixed soil by optimizing the permeability of the mixed soil are as follows: The target soil area is divided into sample collection areas for the mixed soil, and sampling is performed in all sample collection areas of the mixed soil to obtain different mixed soil samples; The daily average temperature and daily average humidity of the target soil area are matched from the pre-constructed second network model of target average temperature, target average humidity and standard permeability threshold to control the permeate in different mixed soil samples. The permeability pressure and permeation velocity of the permeate in all mixed soil samples are monitored in real time by a permeameter to obtain the current permeation state. The standard permeability threshold corresponding to the target soil area to be tested is obtained from the second network model for permeability assessment. If a mixed soil sample maintains its permeability within the standard permeability threshold under the current permeability state, the corresponding mixed soil sample is labeled as a normal permeability sample, and the mixed soil corresponding to the normal permeability sample is labeled as a qualified mixed soil. If the permeability of a mixed soil sample under the current permeability state is not within the standard permeability threshold, the corresponding mixed soil sample will be marked as a permeability anomalous sample, and the collection area corresponding to the permeability anomalous sample will be marked as a permeability anomalous collection area. If there are areas with abnormal permeability in the target soil area, the mixed soil in the areas with abnormal permeability will be subjected to soil permeability optimization treatment to obtain qualified mixed soil.

6. The method for improving the soil texture and structure of cohesive reclaimed paddy soil according to claim 5, characterized in that, The specific steps for optimizing the permeability of the mixed soil within the target soil area to obtain qualified mixed soil are as follows: Within all areas of permeability anomaly sampling, calculate the content of organic matter mixture in the anomalous areas of the mixed soil, and the standard content of organic matter mixture in the non-permeability anomaly sampling areas; If the content of organic matter mixture in the abnormal area is less than the standard content of organic matter mixture, the corresponding permeability abnormality collection area is marked as a Class I abnormal area; if the content of organic matter mixture in the abnormal area is greater than the standard content of organic matter mixture, the corresponding permeability abnormality collection area is marked as a Class II abnormal area. In all anomalous regions, calculate the first difference between the content of the organic mixture in the anomalous region and the standard content of the organic mixture, and obtain the supplementary organic mixture based on the first difference; The soil mixing equipment is used to supplement the organic material mixture with the mixed soil in all Class I abnormal areas for secondary soil mixing treatment. During the secondary soil mixing treatment, a secondary permeability test is also performed. When the permeability of the soil in the Class I abnormal area is maintained within the standard permeability threshold, the secondary soil mixing treatment is stopped, and qualified mixed soil is obtained. In all Class II anomaly areas, the second difference between the organic matter mixture content in the anomaly area and the standard content of the organic matter mixture is calculated, and clean soil after plowing treatment is added to the mixed soil in the Class II anomaly areas based on the second difference; The soil mixing equipment is controlled to perform secondary soil mixing in the Class II abnormal area. During the secondary soil mixing process, a secondary permeability test is also conducted. When the permeability of the soil in the Class II abnormal area is maintained within the standard permeability threshold, the secondary soil mixing process is stopped, and qualified mixed soil is obtained.

7. The method for improving the soil texture and structure of cohesive reclaimed paddy soil according to claim 1, characterized in that, The specific steps for improving soil texture and structure include: laying a plow layer of qualified mixed soil in the target soil area, repeatedly flooding and drying the plow layer, laying a topsoil layer of qualified mixed soil, and adjusting and optimizing the flatness of the topsoil layer. The soil laying equipment is used to lay qualified mixed soil in the target soil area as a plow layer. After the plow layer is repeatedly flooded and dried, the mixed soil is then laid as the topsoil. In the target soil area, the flatness of the soil to be evaluated is evaluated by using a level to obtain the flatness of the soil to be evaluated. If the flatness of the soil to be evaluated is not within the preset standard flatness threshold, the specification parameter table of the soil laying equipment is obtained. The specification parameter table of the soil laying equipment records the standard adjustment force of the soil laying equipment for soils with different flatness. The flatness of the soil to be evaluated is imported into the soil laying equipment. In the soil laying equipment, according to the specification parameter table of the soil laying equipment, a target adjustment force for the flatness of the soil to be evaluated is generated. This controls the soil laying equipment to adjust the flatness of the soil to be evaluated in the target soil area according to the target adjustment force, so that the flatness of the soil to be evaluated in the target soil area is maintained within the standard flatness threshold, thereby improving the soil texture and structure.

8. A soil texture and structure improvement system for cohesive reclaimed paddy soil, characterized in that, The soil texture structure improvement system includes a memory and a processor. The memory stores a soil texture structure improvement method program. When the soil texture structure improvement method program is executed by the processor, it implements the steps of the soil texture structure improvement method as described in any one of claims 1-7: Aeolian sand and organic materials are obtained, and the aeolian sand and organic materials are pretreated respectively to obtain qualified aeolian sand and qualified organic materials. The area where the clayey reclaimed paddy soil that needs to be improved in terms of soil texture and structure is located is taken as the target soil area. The soil in the target soil area is plowed and loosened to obtain clean soil after plowing and loosening. The qualified aeolian sand, the qualified organic material, and the clean soil after plowing and loosening are mixed to obtain mixed soil. The qualified mixed soil is obtained by evaluating and optimizing the permeability of the mixed soil. In the target soil area, a plow layer of qualified mixed soil is laid. After repeated watering-drying cycles, a topsoil layer of qualified mixed soil is laid. After adjusting and optimizing the flatness of the topsoil layer, the soil texture and structure are improved.

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