Soil texture structure improvement method and system for viscous reclaimed rice soil

Abstract

The invention relates to the field of soil improvement, and discloses a soil texture structure improvement method and system for viscous reclaimed rice soil, and the method comprises the following steps: obtaining aeolian sand and an organic material, and respectively carrying out material pretreatment to obtain qualified aeolian sand and qualified organic material; the soil of the target area is subjected to ploughing treatment, and clean soil subjected to ploughing treatment is obtained; mixing qualified aeolian sand, qualified organic materials and clean soil to obtain mixed soil, and evaluating and optimizing permeability of the mixed soil to obtain qualified mixed soil; the method comprises the following steps: laying a plow pan on qualified mixed soil, carrying out repeated waterflooding-drying circulation treatment on the plow pan, then laying a plow layer by using the qualified mixed soil, and carrying out flatness adjustment and flatness optimization on the plow layer so as to improve the texture structure of the soil. The structure of the reclamation rice soil can be effectively improved, the permeability and fertility of the soil are improved, and a good soil environment is provided for rice growth.

Description

Technical Field

[0001] The invention relates to the field of soil improvement, and in particular to a method and system for improving the soil texture structure of clay reclaimed paddy soil. Background Art

[0002] Clay reclaimed paddy soil refers to a type of soil encountered when land is reclaimed in rice-growing areas. This type of soil usually has high viscosity, is easy to adhere into blocks, and contains more clay components. In clay reclaimed paddy soil, the high clay content will cause the soil to be strong in viscosity and easy to form a block structure, thus affecting the drainage of the soil. If the drainage is poor, waterlogging and waterlogging are likely to occur, affecting the growth of crops. In addition, the permeability of clay reclaimed paddy soil is poor, and the flow of gas and water in the soil is restricted, affecting the activity of microorganisms in the soil and the growth of plant roots. Therefore, it is necessary to take corresponding soil improvement and management measures, such as adding organic matter to improve soil structure, improve soil permeability and suitability, and promote crop growth. Therefore, this paper proposes a soil texture structure improvement method and system for clay reclaimed paddy soil, which is used to improve soil texture structure, solve the problems of heavy soil texture, poor aeration, and low fertility in clay reclaimed paddy soil, provide a good soil environment for rice growth, and thereby improve the ability of soil to be suitable for rice growth as well as rice yield and quality. Summary of the invention

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

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: A first aspect of the present invention provides a method for improving the soil texture structure of clay reclaimed paddy soil, comprising the following steps: Acquire aeolian sand and organic materials, and perform material pretreatment on the aeolian sand and the organic materials respectively to obtain qualified aeolian sand and qualified organic materials; The target soil area is a region where the clay reclaimed paddy soil that needs to be improved in soil texture structure is located, and the soil in the target area is plowed and loosened to obtain clean soil after the plowing and loosening treatment; The qualified aeolian sand, the qualified organic material and the clean soil after plowing and loosening are mixed to obtain mixed soil, and the qualified mixed soil is obtained by evaluating and optimizing the permeability of the mixed soil; In the target soil area, qualified mixed soil is laid as the plow bottom layer. After repeated flooding and drying cycles, the mixed soil is used to lay the tillage layer. After the flatness of the tillage layer is adjusted and optimized, the soil texture structure is improved.

[0005] Furthermore, in a preferred embodiment of the present invention, the steps of pre-treating the aeolian sand to obtain qualified aeolian sand are specifically as follows: The volume of the aeolian sand obtained and poured into the aeolian sand crushing equipment is controlled so that the volume of the aeolian sand particles is maintained within a preset aeolian sand particle standard volume threshold to obtain qualified aeolian sand.

[0006] Furthermore, in a preferred embodiment of the present invention, the steps of pre-treating the organic material to obtain qualified organic material are specifically as follows: Pre-constructing the first data network model based on rice variety characteristics and organic material types; Obtaining a target rice variety to be planted on the clay reclaimed paddy soil, and matching the variety characteristics of the target rice variety and the target organic materials corresponding to the variety characteristics that meet the requirements for planting the target rice variety based on the first data network model; Obtaining a material sample of a target organic material, and calculating an average size of the material sample to obtain a material sample sieve for sieving the material sample; The target material sample is screened by the material sample screen to obtain screened organic material, and the moisture content of the screened organic material is adjusted by the moisture content control device to obtain qualified organic material.

[0007] Furthermore, in a preferred embodiment of the present invention, the steps of adjusting the moisture content of the screened organic material by the moisture content control device to obtain qualified organic material are specifically as follows: The moisture content of the screened organic material is monitored in real time by a moisture meter of the moisture content control device. When the moisture content of the screened organic material is maintained within a preset standard moisture content threshold of the screened organic material, the moisture content adjustment of the screened organic material is stopped to obtain qualified organic material.

[0008] Furthermore, in a preferred embodiment of the present invention, the area where the clay 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 the clean soil after plowing and loosening. Specifically, the steps are as follows: The target soil area is measured by a GIS system to obtain the elevation information of clean soil at different positions in the target soil area and the soil depth information at different positions in the target soil area; In a pre-constructed knowledge graph based on soil depth information and plowing power of a plowing machine, soil depth information at different locations in a target soil area is matched to different target plowing powers of the plowing machine; The target plowing parameters are preset based on the target plowing power, the plowing parameters in the plowing machine are set as 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 clean soil after plowing and loosening.

[0009] Furthermore, in a preferred embodiment of the present invention, the step of mixing the qualified aeolian sand, the qualified organic material and the clean soil after ploughing to obtain the mixed soil is specifically: The qualified aeolian sand and the qualified organic material are poured into a soil mixing device in a ratio of 1:1-1:3 for mixing to obtain an organic mixture, and then all the clean soil in the target soil area that has been plowed and loosened is mixed with the organic mixture through the soil mixing device to obtain mixed soil.

[0010] Furthermore, in a preferred embodiment of the present invention, the step of obtaining qualified mixed soil by optimizing the permeability evaluation of the mixed soil is specifically as follows: Divide the mixed soil sample collection area in the target soil area, and perform sampling processing in all mixed soil sample collection areas 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 the target average temperature, the target average humidity and the standard permeability threshold, so as to control the permeation liquid to perform permeation tests on different mixed soil samples, and the permeability pressure and permeation flow rate of the permeation liquid in all mixed soil samples are monitored in real time by the permeameter, so as to obtain the current permeability state, and obtain the standard permeability threshold corresponding to the target soil area to be tested from the second network model for permeability evaluation; If there is a mixed soil sample whose permeability under the current permeability 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 a qualified mixed soil; If there is a mixed soil sample whose permeability under the current permeability state is not within the standard permeability threshold, 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; 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.

[0011] Furthermore, in a preferred embodiment of the present invention, when there is an abnormal permeability collection area in the target soil area, the step of performing soil permeability optimization treatment on the mixed soil in the abnormal permeability collection area to obtain qualified mixed soil is specifically as follows: In all permeability anomaly collection areas, calculate the organic matter mixture content in the abnormal area within the mixed soil, and the standard content of the organic matter mixture in the non-permeability anomaly collection area; If the content of organic mixture in the abnormal area is less than the standard content of organic mixture, the corresponding abnormal permeability collection area is marked as a Class I abnormal area; if the content of organic mixture in the abnormal area is greater than the standard content of organic mixture, the corresponding abnormal permeability collection area is marked as a Class II abnormal area; In all the first-class abnormal areas, calculating a first difference between the content of the organic mixture in the abnormal area and the standard content of the organic mixture, and obtaining an organic material supplementary mixture based on the first difference; Control the soil mixing equipment to perform secondary soil mixing treatment with the organic material supplement mixture and the mixed soil in all the first-class abnormal areas. During the secondary soil mixing treatment process, a secondary permeability test is performed at the same time. When the permeability of the soil in the first-class abnormal area is maintained within the standard permeability threshold, the secondary soil mixing treatment is stopped to obtain qualified mixed soil; In all the second-category abnormal areas, a second difference between the content of the organic matter mixture in the abnormal area and the standard content of the organic matter mixture is calculated, and based on the second difference, clean soil after plowing and loosening treatment is added to the mixed soil in the second-category abnormal area; The soil mixing equipment is controlled to perform secondary soil mixing treatment in the second type of abnormal area. During the secondary soil mixing treatment, a secondary permeability test is performed simultaneously. When the permeability of the soil in the second type of abnormal area is maintained within the standard permeability threshold, the secondary soil mixing treatment is stopped to obtain qualified mixed soil.

[0012] Furthermore, in a preferred embodiment of the present invention, the steps of laying a plow bottom layer on qualified mixed soil in the target soil area, repeatedly flooding and drying the plow bottom layer, and then laying a tillage layer with the mixed soil, and adjusting and optimizing the flatness of the tillage layer to improve the soil texture structure are specifically as follows: The qualified mixed soil is laid as the plow bottom layer in the target soil area by using soil laying equipment, and the plow bottom layer is repeatedly flooded and dried in a cycle before the mixed soil is used for laying the tillage layer; In the target soil area, the soil to be assessed for flatness is assessed and analyzed by a level meter to obtain the flatness of the soil to be assessed for flatness. If the flatness of the soil to be assessed for flatness is not within a preset standard flatness threshold, a specification parameter table of the soil paving equipment is obtained, wherein the specification parameter table of the soil paving equipment records the standard adjustment force of the soil paving equipment for soils of different flatnesses; The flatness of the soil to be evaluated for laying flatness is introduced into the soil laying equipment. In the soil laying equipment, a target adjustment force for the flatness of the soil to be evaluated for laying flatness is generated according to the specification parameter table of the soil laying equipment, so as to control the soil laying equipment to adjust the soil flatness of the soil to be evaluated for laying flatness according to the target adjustment force in the target soil area, so that the flatness of the soil to be evaluated for laying flatness in the target soil area is maintained within the standard flatness threshold to achieve improvement of the soil texture structure.

[0013] The second aspect of the present invention further provides a soil texture structure improvement system for clay reclaimed paddy soil, the soil texture structure improvement system comprising a memory and a processor, the memory storing a soil texture structure improvement method, and when the soil texture structure improvement method is executed by the processor, the following steps are implemented: Acquire aeolian sand and organic materials, and perform material pretreatment on the aeolian sand and the organic materials respectively to obtain qualified aeolian sand and qualified organic materials; The target soil area is a region where the clay reclaimed paddy soil that needs to be improved in soil texture structure is located, and the soil in the target area is plowed and loosened to obtain clean soil after the plowing and loosening treatment; The qualified aeolian sand, the qualified organic material and the clean soil after plowing and loosening are mixed to obtain mixed soil, and the qualified mixed soil is obtained by evaluating and optimizing the permeability of the mixed soil; In the target soil area, qualified mixed soil is laid as the plow bottom layer. After repeated flooding and drying cycles, the mixed soil is used to lay the tillage layer. The soil texture structure is improved after the flatness of the tillage layer is adjusted and optimized.

[0014] The present invention solves the technical defects existing in the background technology, and the present invention has the following beneficial effects: pre-treatment of aeolian sand and organic materials to obtain qualified aeolian sand and qualified organic materials, and plowing and loosening of all soils in the target soil area to obtain clean soil after plowing and loosening; soil mixing and soil permeability evaluation and optimization of qualified aeolian sand, qualified organic materials and clean soil after plowing and loosening to obtain qualified mixed soil, paving the plow bottom layer of the qualified mixed soil, repeatedly flooding-drying the plow bottom layer in a cycle, and then paving the tillage layer with qualified mixed soil, and improving the soil texture structure after adjusting the flatness and optimizing the flatness of the tillage layer. The present invention can effectively improve the structure of reclaimed paddy soil, improve soil permeability and fertility, provide a good soil environment for rice growth, and finally achieve the optimization of the hierarchical structure of viscous reclaimed paddy soil and improve rice yield and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A flow chart showing a method for improving the soil texture structure of clayey reclaimed paddy soil is provided; Figure 2 A flow chart of a method for performing soil plowing and soil mixing treatment on a target soil area is shown; Figure 3 A soil texture structure improvement system for clayey reclaimed paddy soil is shown. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0019] Figure 1 A flow chart of a method for improving the soil texture structure of clay reclaimed paddy soil is shown, comprising the following steps: S102: Obtaining aeolian sand and organic materials, and performing material pretreatment on the aeolian sand and the organic materials respectively to obtain qualified aeolian sand and qualified organic materials; The purpose of the present invention is to provide a method for improving the soil texture structure of clay reclaimed paddy soil to solve the problems of heavy clay texture, poor aeration, low fertility, etc., so as to provide a good soil environment for rice.

[0020] In this embodiment, in order to achieve the above-mentioned improvement of soil texture structure, it is necessary to add an appropriate amount of organic materials, such as organic fertilizers, mineral fertilizers, etc., to the soil to improve the permeability of the soil. When adding organic materials, it is necessary to screen the organic materials and add them to the soil together with the aeolian sand. Therefore, step S102 specifically includes two aspects of the processing of organic materials and the processing of aeolian sand, which are specifically described below.

[0021] In this embodiment, the process of obtaining qualified aeolian sand is specifically as follows: obtaining aeolian sand and aeolian sand crushing equipment, while presetting a standard volume threshold of aeolian sand particles, pouring aeolian sand into the aeolian sand crushing equipment to control the volume of aeolian sand particles, so that the volume of aeolian sand particles is maintained within the standard volume threshold of aeolian sand particles, and obtaining qualified aeolian sand.

[0022] It should be noted that aeolian sand is a pile of sand particles formed by wind transportation and deposition, with fine particle size and obvious stratification structure. Mixing aeolian sand with organic materials and adding it to the soil can help improve the soil texture and make the soil more conducive to rice cultivation.

[0023] In this embodiment, the process of obtaining qualified organic materials specifically includes the following contents: The first data network model based on rice variety characteristics and organic material types is pre-built.

[0024] A target rice variety to be planted on the clay reclaimed paddy soil is obtained, and the variety characteristics of the target rice variety and the target organic materials corresponding to the variety characteristics that meet the requirements for planting the target rice variety are matched based on the first data network model.

[0025] A material sample of the target organic material is obtained, and an average size of the material sample is calculated to obtain a sieve for sieving the material sample, which is calibrated as the material sample sieve.

[0026] The target material sample is screened through a material sample screen to obtain screened organic material, and the moisture content of the screened organic material is adjusted through a moisture content control device to obtain qualified organic material.

[0027] The moisture content of the screened organic material is monitored in real time by a moisture meter of the moisture content control device. When the moisture content of the screened organic material is maintained within a preset standard moisture content threshold of the screened organic material, the moisture content adjustment of the screened organic material is stopped to obtain qualified organic material.

[0028] It should be noted that the moisture content is adjusted to control the moisture content of the organic material. The moisture content can be controlled by equipment such as a dryer, a dehumidifier, and a humidifier, and the moisture content of the organic material needs to be controlled between 30% and 40%. The organic material in this range can maximize the fertility and water permeability of the soil. At the same time, the pretreatment also requires the particle size control of the aeolian sand, and the aeolian sand particle size is controlled at 0.1-0.5 mm, that is, the standard volume threshold of the aeolian sand particles. The volume of the aeolian sand particles can be controlled using an aeolian sand crushing device. The present invention can obtain qualified aeolian sand and qualified organic materials by pretreating aeolian sand and organic materials, thereby providing conditions for improving the texture structure of the soil.

[0029] S104: The area where the clay reclaimed paddy soil that needs to be improved in soil texture structure is located is taken as a target soil area, and the soil in the target area is plowed and loosened to obtain clean soil after the plowing and loosening treatment.

[0030] In this embodiment, after determining the area where the soil texture structure is improved, the area is marked as the target soil area, and the elevation information of the soil at different positions in the target soil area and the soil depth information at different positions in the target soil area are obtained by introducing a GIS system to measure the elevation of the target soil area. 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 rock layer at the bottom of the soil. The soil depth at different positions in the target soil area can be obtained through the elevation information.

[0031] It should be noted that if the soil in the improved area is relatively compact, it will be unfavorable for soil improvement, and will lead to a decrease in permeability, water retention and other effects, which is not conducive to the growth of rice roots and water absorption. Therefore, it is necessary to plow and loosen the soil. The soil after plowing and loosening has good air permeability and is more conducive to rice planting and growth. Before plowing and loosening, it is necessary to clean up the debris in the soil, such as gravel, branches, garbage, etc., to prevent affecting the mixing efficiency and rice planting effect in the subsequent mixing, and obtain clean soil after plowing and loosening. A plowing machine can be used to plow and loosen the soil. The plowing machine continuously stirs the soil in the soil to achieve the purpose of plowing and loosening. When the plowing machine is plowing and loosening, the depth of the soil needs to be obtained. The soil depth may be different in the same area. When plowing and loosening soil at different depths, the plowing machine needs to set different parameters such as power and strength. Generally, the deeper the soil depth, the higher the power that needs to be set. The higher the power, the greater the corresponding plowing force.

[0032] In this embodiment, the corresponding plowing power is determined by pre-constructing a knowledge graph based on soil depth information and plowing power of a plowing machine. The knowledge graph can be pre-set in the first data network model, and the knowledge graph of soil depth information and plowing power of a plowing machine is matched in the first data network model, so that the soil depth information at different positions in the target soil area is matched according to the knowledge graph to correspond to different target plowing powers of the plowing machine. The knowledge graph describes different plowing powers of the plowing machine corresponding to different soil depths.

[0033] Based on the knowledge graph, the target plowing power corresponding to the soil depth information at different positions in the target soil area is obtained, and based on the target plowing power, the target plowing parameters are preset, 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 clean soil after plowing and loosening.

[0034] It should be noted that since the power corresponding to soils of different depths is different, the plowing power required by the plowing machine on the soil at different positions is obtained based on the soil depth-plowing machine plowing power knowledge graph, and the soil is loosened in real time in the target soil area. During the plowing process, the plowing power is adjusted in real time according to the different depths of the plowing machine to achieve plowing force adjustment.

[0035] S106: Mix the qualified aeolian sand, the qualified organic material and the clean soil after plowing to obtain mixed soil, and evaluate and optimize the permeability of the mixed soil to obtain qualified mixed soil.

[0036] In this embodiment, the qualified aeolian 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, and then all the clean soil after plowing and loosening in the target soil area is mixed with the organic mixture through the soil mixing device to obtain mixed soil.

[0037] Divide the mixed soil sample collection area in the target soil area, and perform sampling in all the mixed soil sample collection areas to obtain different mixed soil samples; Based on the historical data network, the daily average temperature and daily average humidity of the target soil area are obtained, calibrated to the target average temperature and target average humidity, the permeate and the permeameter are obtained, the permeate is controlled to perform permeation tests on different mixed soil samples under the conditions of the target average temperature and target average humidity, and the permeate pressure and permeate flow rate of the permeate in all mixed soil samples are monitored in real time by the permeameter; Based on the infiltration pressure and infiltration flow rate of the infiltration liquid in the mixed soil sample, the current infiltration state is obtained, and based on the historical data network, the standard permeability corresponding to the mixed soil sample under the current infiltration state is retrieved and defined as the standard permeability threshold; If there is a mixed soil sample whose permeability under the current permeability 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 a qualified mixed soil; If there is a mixed soil sample whose permeability under the current permeability state is not within the standard permeability threshold, 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; 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.

[0038] S108: Lay a plow bottom layer of qualified mixed soil in the target soil area, subject the plow bottom layer to repeated flooding-drying cycles, and then lay a tillage layer with qualified mixed soil, adjust and optimize the flatness of the tillage layer to improve the soil texture structure.

[0039] In this embodiment, soil laying equipment is required when laying the plow bottom layer and the tillage layer in the target soil area. The soil laying equipment is used to lay qualified mixed soil in the target soil area to obtain soil to be assessed for laying flatness. The soil laying process is to use qualified mixed soil as a material, and then to construct the tillage layer after the plow bottom layer is constructed to meet the standards. In order to achieve flatness during soil laying, a level is used to evaluate and analyze the flatness of the soil to be assessed for laying flatness, and the flatness of the soil to be assessed for laying flatness is obtained, and analyzed by a preset standard flatness threshold. If the flatness of the soil to be assessed for laying flatness is not within the standard flatness threshold, a specification parameter table of the soil laying equipment is obtained, and the specification parameter table of the soil laying equipment records the standard adjustment force of the soil laying equipment for soils of different flatnesses. The flatness of the soil to be evaluated for laying flatness is introduced into the soil laying equipment. In the soil laying equipment, an adjustment force for the flatness of the soil to be evaluated for laying flatness is generated according to the specification parameter table of the soil laying equipment, calibrated as the target adjustment force, and the soil laying equipment is controlled to adjust the soil flatness of the soil to be evaluated for laying flatness according to the target adjustment force in the target soil area, so that the flatness of the soil to be evaluated for laying flatness in the target soil area is maintained within the standard flatness threshold.

[0040] It should be noted that after obtaining qualified mixed soil, qualified mixed soil is needed to be used to lay the plow bottom layer and the tillage layer respectively. Among them, the tillage layer is a layer of soil located on the soil surface, which contains most of the organic matter and root system. It is the main area for crop growth and root development and is used for fertilization, irrigation, etc. The plow bottom layer refers to a layer of soil below the soil surface, usually located below the tillage layer. It is the soil layer below the tillage layer and has the characteristics of high density and easy nutrient storage. After the plow bottom layer is laid and constructed to meet the standards, the tillage layer is constructed. After the laid plow bottom layer is repeatedly flooded and dried, qualified mixed soil is used to lay the tillage layer.

[0041] After the plow bottom layer and the tillage layer are laid, the flatness of the soil after laying needs to be analyzed and optimized. A higher flatness is conducive to subsequent sowing and management. A level meter is a device for monitoring flatness. If the flatness is low, the adjustment force of the soil flatness is obtained in the specification parameter table of the soil laying equipment according to the flatness. Because the flatness is large, the force required is also large. The flatness of different positions in the target soil area may be different, so the required force needs to be intelligently controlled. After obtaining the target adjustment force, the soil laying equipment is used to adjust the flatness so that the flatness of the soil to be evaluated in the target soil area is maintained within the standard flatness threshold. The present invention can improve the viscosity and compactness of the soil by evaluating the flatness of qualified mixed soil and adjusting the flatness of soil with low flatness, which is helpful for rice sowing and management. During the experiment, after 10 cycles of irrigation and drying, the clay content of the plow bottom layer increased by about 15% and the compactness increased by about 10%. At the same time, the descent rate of the soil wetting front slowed down by about 20%. These data indicate that the method of the present invention can effectively improve the viscosity and compactness of the soil and enhance the water and fertilizer retention of the soil.

[0042] Figure 2 A flow chart of a method for performing soil plowing and soil mixing treatment on a target soil area is shown, comprising the following steps: S202: Qualified aeolian sand, qualified organic materials and clean soil after plowing are mixed to obtain mixed soil.

[0043] S204: Evaluate the permeability of all mixed soils within the target soil area.

[0044] In this embodiment, in order to realize the permeability evaluation of all mixed soils in the target soil area, a second network model based on the daily average temperature, daily average humidity and standard permeability threshold is pre-established. The model records the daily average temperature, daily average humidity and other data of different target soil areas, as well as the corresponding standard permeability threshold as a comparison basis for the corresponding data of different target soil areas currently obtained in real time.

[0045] When a permeability test is required for a target soil, the target soil is defined as the target soil to be tested, and a sample collection area for mixed soil is divided in the target soil area to be tested, and different mixed soil samples are obtained by collecting samples in the sample collection area. A first preset condition based on daily average temperature data and daily average humidity data matching the target soil to be tested is obtained from the second network model, and under the first preset condition, a controlled permeation liquid is used to perform a permeation test on different mixed soil samples, and the permeation pressure and permeation flow rate of the permeation liquid in all mixed soil samples are monitored in real time by a permeameter, so as to obtain the current permeability state of the mixed soil sample; the standard permeability threshold corresponding to the target soil area to be tested is obtained from the second network model for permeability evaluation.

[0046] In this embodiment, the specific evaluation process is: If there is a mixed soil sample whose permeability under the current permeability 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 a qualified mixed soil; If there is a mixed soil sample whose permeability under the current permeability state is not within the standard permeability threshold, the corresponding mixed soil sample will be marked as an abnormal permeability sample, and the collection area corresponding to the abnormal permeability sample will be marked as an abnormal permeability collection area.

[0047] It should be noted that after the mixed soil is obtained, its permeability needs to be evaluated to ensure that it is suitable for growing rice. The soil thickness of the tillage layer should be maintained at 15-20 cm and maintain good permeability. The thickness of the organic material and aeolian sand laid on the surface is 5 cm. The soil thickness of the plow bottom layer should be maintained at 8-10 cm and a certain degree of compaction is required. The mixed thickness of organic material and aeolian sand laid on the upper layer is about 2-3 cm. After the mixed soil is obtained, a permeability test is required to evaluate its permeability. The tillage layer with higher permeability (saturated hydraulic conductivity of 10-50 cm / hour) is conducive to the growth and water absorption of rice roots. The plow bottom layer with a certain degree of compactness (saturated hydraulic conductivity of 0.5-10 cm / hour) can play a role in retaining water and fertilizer. The mixed soil is permeated and the permeability pressure and permeability flow rate obtained after the permeability test are analyzed to obtain the permeability state. The combination of permeability pressure and permeability flow rate represents different permeability states, through which the permeability of the mixed soil can be evaluated. Under the current temperature and humidity conditions, the standard permeability threshold can be retrieved through the historical data network, which is usually 30-50 cm / hour. The second network model stores various historical data, including but not limited to various standard data of soil. The mixed soil is sampled in different areas to ensure the accuracy and diversity of the test. Finally, based on the relationship between permeability and the standard permeability threshold, it is determined whether there is mixed soil with abnormal permeability in different collection areas.

[0048] Through the above steps, it can be ensured that the permeability and compactness of the mixed soil are suitable for the growth of rice, thereby improving the yield and quality of rice.

[0049] S206: When there is an abnormal permeability collection area in the target soil area, the soil permeability optimization process is performed on the mixed soil in the abnormal permeability collection area.

[0050] In this embodiment, when an abnormal permeability collection area is found after evaluation according to step S204, the content of the organic mixture in the mixed soil is calculated in the abnormal permeability collection area and calibrated as the organic mixture content in the abnormal area, and the content of the organic mixture in the non-permeability abnormal collection area is calculated and calibrated as the standard content of the organic mixture; the content of the organic mixture in the abnormal area is compared with the standard content of the organic mixture, if the content of the organic mixture in the abnormal area is less than the standard content of the organic mixture, the corresponding abnormal permeability collection area is calibrated as a type I abnormal area, if the content of the organic mixture in the abnormal area is greater than the standard content of the organic mixture, the corresponding abnormal permeability collection area is calibrated as a type II abnormal area; In all the first-class abnormal areas, a first difference between the content of the organic mixture in the abnormal area and the standard content of the organic mixture is calculated, calibrated as the first-class content difference, and an organic material supplementary mixture is obtained based on the first-class content difference; Control the soil mixing equipment to perform secondary soil mixing treatment with the organic material supplement mixture and the mixed soil in all the first-class abnormal areas. During the secondary soil mixing treatment process, a secondary permeability test is performed at the same time. When the permeability of the soil in the first-class abnormal area is maintained within the standard permeability threshold, the secondary soil mixing treatment is stopped to obtain qualified mixed soil; In all the second-category abnormal areas, the second difference between the organic matter mixture content in the abnormal area and the standard organic matter mixture content is calculated and calibrated as the second-category content difference; based on the second difference, the clean soil treated by plowing and loosening is supplemented in the mixed soil of the second-category abnormal area; The soil mixing equipment is controlled to perform secondary soil mixing treatment in the second type of abnormal area. During the secondary soil mixing treatment, a secondary permeability test is performed simultaneously. When the permeability of the soil in the second type of abnormal area is maintained within the standard permeability threshold, the secondary soil mixing treatment is stopped to obtain qualified mixed soil.

[0051] It should be noted that if there is an abnormal permeability collection area, that is, the permeability of the mixed soil in the area is abnormal, it is necessary to optimize the permeability of the mixed soil in the abnormal permeability collection area, because the mixed soil with abnormal permeability may lead to poor drainage, stagnation of water in the soil, increase the water content in the soil, and cause insufficient oxygen content in the soil, affecting the respiration and growth of crop roots; or it may lead to the 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, it is necessary to optimize the permeability. The reason for the abnormal permeability of mixed soil may be too much or too little organic material, or it may be that the mixing is not thorough enough. Therefore, it is necessary to calculate the current content of organic material in the abnormal permeability collection area and analyze it with the standard content, so as to classify the abnormal permeability collection area and obtain a type I abnormal area and a type II abnormal area. The organic matter content in the type I abnormal area is less, and the organic matter content in the type II abnormal area is more, and this requires different methods. In a type of abnormal area, organic materials need to be supplemented, the content of organic matter that needs to be supplemented, that is, a type of content difference, is calculated, and the organic material supplement mixture is obtained.

[0052] In this embodiment, the content of the organic material supplement mixture is equal to the first-class content difference, and the organic material supplement mixture is mixed with the mixed soil for a secondary soil mixing process in all the first-class abnormal areas through a soil mixing device. In the secondary mixing process, not only the content of organic materials is supplemented to make the organic material content equal to the standard content, but also the secondary mixing will improve the permeability, thereby obtaining qualified mixed soil. In the second-class abnormal collection area, because the content of organic materials is large, it is necessary to supplement clean soil after plowing and loosening to reduce the content of organic materials. Similarly, the second-class content difference is obtained, and based on the second-class content difference, the soil mixing equipment is controlled to supplement the clean soil after plowing and loosening in the second-class abnormal area, and perform a secondary soil mixing process to obtain qualified mixed soil. The present invention can improve the permeability of mixed soil to obtain qualified mixed soil.

[0053] like Figure 3 As shown, the second aspect of the present invention further provides a soil texture structure improvement system for clay reclaimed paddy soil, the soil texture structure improvement system comprising a memory 31 and a processor 32, the memory 31 stores a soil texture structure improvement method, and when the soil texture structure improvement method is executed by the processor 32, the following steps are implemented: Acquire aeolian sand and organic materials, and perform material pretreatment on the aeolian sand and organic materials to obtain qualified aeolian sand and qualified organic materials; The soil is plowed and loosened in the area where the clay reclaimed paddy soil needs to be improved in soil texture structure, so as to obtain clean soil after plowing and loosening; Mixing qualified aeolian sand, qualified organic materials and clean soil after plowing to obtain mixed soil, and evaluating and optimizing the permeability of the mixed soil; In the target soil area, a plow bottom layer of qualified mixed soil is laid. After the plow bottom layer is repeatedly flooded and dried in a cycle, a tillage layer of qualified mixed soil is laid. The soil texture structure is improved after the flatness of the tillage layer is adjusted and optimized.

[0054] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for improving the soil texture structure of clay reclaimed paddy soil, characterized in that: The following steps are involved: Acquire aeolian sand and organic materials, and perform material pretreatment on the aeolian sand and the organic materials respectively to obtain qualified aeolian sand and qualified organic materials; The target soil area is a region where the clay reclaimed paddy soil that needs to be improved in soil texture structure is located, and the soil in the target area is plowed and loosened to obtain clean soil after the plowing and loosening treatment; The qualified aeolian sand, the qualified organic material and the clean soil after plowing and loosening are mixed to obtain mixed soil, and the qualified mixed soil is obtained by evaluating and optimizing the permeability of the mixed soil; In the target soil area, a plow bottom layer of qualified mixed soil is laid. After the plow bottom layer is repeatedly flooded and dried in a cycle, a tillage layer of qualified mixed soil is laid. The soil texture structure is improved after the flatness of the tillage layer is adjusted and optimized.

2. A method for improving the soil texture structure of clay reclaimed paddy soil according to claim 1, characterized in that: The steps of pre-treating the aeolian sand to obtain qualified aeolian sand are as follows: The volume of the aeolian sand obtained and poured into the aeolian sand crushing equipment is controlled so that the volume of the aeolian sand particles is maintained within a preset aeolian sand particle standard volume threshold to obtain qualified aeolian sand.

3. The method for improving the soil texture structure of clay reclaimed paddy soil according to claim 1, characterized in that: The steps of pre-treating the organic material to obtain qualified organic material are as follows: Pre-constructing the first data network model based on rice variety characteristics and organic material types; Obtaining a target rice variety to be planted on the clay reclaimed paddy soil, and matching the variety characteristics of the target rice variety and the target organic materials corresponding to the variety characteristics that meet the requirements for planting the target rice variety based on the first data network model; Obtaining a material sample of a target organic material, and calculating an average size of the material sample to obtain a material sample sieve for sieving the material sample; The target material sample is screened by the material sample screen to obtain screened organic material, and the moisture content of the screened organic material is adjusted by the moisture content control device to obtain qualified organic material.

4. A method for improving the soil texture structure of clay reclaimed paddy soil according to claim 3, characterized in that: The specific steps of adjusting the moisture content of the screened organic material by the moisture content control device to obtain qualified organic material are: The moisture content of the screened organic material is monitored in real time by a moisture meter of the moisture content control device. When the moisture content of the screened organic material is maintained within a preset standard moisture content threshold of the screened organic material, the moisture content adjustment of the screened organic material is stopped to obtain qualified organic material.

5. The method for improving the soil texture structure of clay reclaimed paddy soil according to claim 1, characterized in that: The step of taking the area where the clay reclaimed paddy soil that needs to be improved in soil texture structure is located as the target soil area, and performing plowing and loosening treatment on the soil in the target area to obtain clean soil after the plowing and loosening treatment is specifically as follows: The target soil area is measured by a GIS system to obtain the elevation information of clean soil at different positions in the target soil area and the soil depth information at different positions in the target soil area; In a pre-constructed knowledge graph based on soil depth information and plowing power of a plowing machine, soil depth information at different locations in a target soil area is matched to different target plowing powers of the plowing machine; The target plowing parameters are preset based on the target plowing power, the plowing parameters in the plowing machine are set as 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 clean soil after plowing and loosening.

6. A method for improving the soil texture structure of clay reclaimed paddy soil according to claim 1, characterized in that: The step of mixing the qualified aeolian sand, the qualified organic material and the clean soil after plowing to obtain the mixed soil is specifically: The qualified aeolian sand and the qualified organic material are poured into a soil mixing device in a ratio of 1:1-1:3 for mixing to obtain an organic mixture, and then all the clean soil in the target soil area that has been plowed and loosened is mixed with the organic mixture through the soil mixing device to obtain mixed soil.

7. A method for improving the soil texture structure of clay reclaimed paddy soil according to claim 6, characterized in that: The step of obtaining qualified mixed soil by optimizing the permeability evaluation of the mixed soil is specifically as follows: Divide the mixed soil sample collection area in the target soil area, and perform sampling processing in all mixed soil sample collection areas 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 the target average temperature, the target average humidity and the standard permeability threshold, so as to control the permeation liquid to perform permeation tests on different mixed soil samples, and the permeability pressure and permeation flow rate of the permeation liquid in all mixed soil samples are monitored in real time by the permeameter, so as to obtain the current permeability state, and obtain the standard permeability threshold corresponding to the target soil area to be tested from the second network model for permeability evaluation; If there is a mixed soil sample whose permeability under the current permeability 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 a qualified mixed soil; If there is a mixed soil sample whose permeability under the current permeability state is not within the standard permeability threshold, 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; 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.

8. A method for improving the soil texture structure of clay reclaimed paddy soil according to claim 7, characterized in that: When there is an abnormal permeability collection area in the target soil area, the steps of optimizing the soil permeability of the mixed soil in the abnormal permeability collection area to obtain qualified mixed soil are specifically as follows: In all permeability anomaly collection areas, calculate the organic matter mixture content in the abnormal area within the mixed soil, and the standard content of the organic matter mixture in the non-permeability anomaly collection area; If the content of organic mixture in the abnormal area is less than the standard content of organic mixture, the corresponding abnormal permeability collection area is marked as a Class I abnormal area; if the content of organic mixture in the abnormal area is greater than the standard content of organic mixture, the corresponding abnormal permeability collection area is marked as a Class II abnormal area; In all the first-class abnormal areas, calculating a first difference between the content of the organic mixture in the abnormal area and the standard content of the organic mixture, and obtaining an organic material supplementary mixture based on the first difference; Control the soil mixing equipment to perform secondary soil mixing treatment with the organic material supplement mixture and the mixed soil in all the first-class abnormal areas. During the secondary soil mixing treatment process, a secondary permeability test is performed at the same time. When the permeability of the soil in the first-class abnormal area is maintained within the standard permeability threshold, the secondary soil mixing treatment is stopped to obtain qualified mixed soil; In all the second-category abnormal areas, a second difference between the content of the organic matter mixture in the abnormal area and the standard content of the organic matter mixture is calculated, and based on the second difference, clean soil after plowing and loosening treatment is added to the mixed soil in the second-category abnormal area; The soil mixing equipment is controlled to perform secondary soil mixing treatment in the second type of abnormal area. During the secondary soil mixing treatment, a secondary permeability test is performed simultaneously. When the permeability of the soil in the second type of abnormal area is maintained within the standard permeability threshold, the secondary soil mixing treatment is stopped to obtain qualified mixed soil.

9. A method for improving the soil texture structure of clay reclaimed paddy soil according to claim 1, characterized in that: The steps of laying a plow bottom layer of qualified mixed soil in the target soil area, repeatedly flooding and drying the plow bottom layer, and then laying a tillage layer with qualified mixed soil, adjusting the flatness of the tillage layer and optimizing the flatness to improve the soil texture structure are specifically as follows: The qualified mixed soil is laid as the plow bottom layer in the target soil area by using soil laying equipment, and the plow bottom layer is repeatedly flooded and dried in a cycle before the mixed soil is used for laying the tillage layer; In the target soil area, the soil to be assessed for flatness is assessed and analyzed by a level meter to obtain the flatness of the soil to be assessed for flatness. If the flatness of the soil to be assessed for flatness is not within a preset standard flatness threshold, a specification parameter table of the soil paving equipment is obtained, wherein the specification parameter table of the soil paving equipment records the standard adjustment force of the soil paving equipment for soils of different flatnesses; The flatness of the soil to be evaluated for laying flatness is introduced into the soil laying equipment. In the soil laying equipment, a target adjustment force for the flatness of the soil to be evaluated for laying flatness is generated according to the specification parameter table of the soil laying equipment, so as to control the soil laying equipment to adjust the soil flatness of the soil to be evaluated for laying flatness according to the target adjustment force in the target soil area, so that the flatness of the soil to be evaluated for laying flatness in the target soil area is maintained within the standard flatness threshold to achieve improvement of the soil texture structure.

10. A soil texture structure improvement system for clay reclaimed paddy soil, characterized in that: The soil texture structure improvement system comprises a memory and a processor, wherein a soil texture structure improvement method program is stored in the memory, and when the soil texture structure improvement method program is executed by the processor, the soil texture structure improvement method steps as described in any one of claims 1 to 9 are implemented: Acquire aeolian sand and organic materials, and perform material pretreatment on the aeolian sand and the organic materials respectively to obtain qualified aeolian sand and qualified organic materials; The target soil area is a region where the clay reclaimed paddy soil that needs to be improved in soil texture structure is located, and the soil in the target area is plowed and loosened to obtain clean soil after the plowing and loosening treatment; The qualified aeolian sand, the qualified organic material and the clean soil after plowing and loosening are mixed to obtain mixed soil, and the qualified mixed soil is obtained by evaluating and optimizing the permeability of the mixed soil; In the target soil area, a plow bottom layer of qualified mixed soil is laid. After the plow bottom layer is repeatedly flooded and dried in a cycle, a tillage layer of qualified mixed soil is laid. The soil texture structure is improved after the flatness of the tillage layer is adjusted and optimized.

Images