A method for controlling and preventing soil acidification

Abstract

The application discloses a method for controlling and preventing soil acidification, and belongs to the field of agricultural technology, which comprises the following steps: S1, determining the type of soil acidification in a large area of farmland and demarcating the land blocks; S2, mixing the soil in the plough layer between the land blocks with the same type of soil acidification; S3, obtaining the source of acidic substances in the mixed soil and configuring and implementing an acidic substance removal scheme; S4, backfilling the soil after the preliminary treatment into the land blocks; S5, selecting crops to be planted based on the pH value of the backfilled soil and the type of soil acidification of the corresponding land block, and simultaneously executing an acidic substance prevention scheme for the plough layer; S6, after the crops are harvested each time, performing straw returning to field, and before the start of the next planting cycle, redemarcating the land blocks according to the method in step S1; and S7, performing the treatment for controlling and preventing soil acidification according to the method in steps S2-S6. The method solves the problem that it is difficult to long-effectively and specially control and prevent different types of soil acidification in a large area of farmland.

Description

Technical Field

[0001] This application belongs to the field of agricultural technology, specifically, it describes a method for preventing and controlling soil acidification. Background Technology

[0002] For large areas of arable land, various types of soil acidification are prevalent. To maximize the effectiveness of soil acidification control, it is best to employ different and most appropriate methods for different types of soil acidification. Furthermore, soil acidification control requires long-term investment and should be conducted as a long-term, comprehensive effort. Current methods for soil acidification control primarily rely on fixed facilities, the application of soil acidification amendments, and improvements to land drainage. However, limitations in these facilities make it difficult to provide specialized control for different types of soil acidification. Moreover, often only amendments are applied directly to the soil itself, without establishing a holistic, long-term, and sustainable soil acidification control mechanism. This results in intermittent effects and an inability to consistently maintain soil properties over extended periods.

[0003] Therefore, how to achieve long-term and targeted control of different types of soil acidification in large areas of arable land is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] To address the challenge of existing technologies that struggle to achieve long-term, targeted control of different soil acidification types over large areas of arable land, this application discloses a method for controlling soil acidification. Specifically:

[0005] A method for controlling soil acidification, the method comprising:

[0006] Step S1: Based on the soil pH measurement sensor group, determine the soil acidification type in a large area of ​​cultivated land and delineate the plots, and establish the correspondence between the plots and the soil acidification type;

[0007] Step S2: Obtain topsoil from plots with the same soil acidification type and mix the topsoil between plots;

[0008] Step S3: Obtain the source of acidic substances in the mixed soil and configure and implement an acidic substance removal plan to obtain pre-treated soil and configure a topsoil acidic substance prevention plan.

[0009] Step S4: After applying improvement measures to the non-cultivated soil of the plot, the pre-treated soil is backfilled into the plot;

[0010] Step S5: Select crops to be planted based on the pH of the backfill soil and the soil acidification type of the corresponding plot, while implementing a topsoil acidification prevention plan and continuously adjusting soil parameters to ensure the cultivation quality of the planted crops.

[0011] Step S6: After each crop is harvested, straw is returned to the field. Before the start of the next planting cycle, the plots are redefined according to the method in Step S1, and a new plot-to-soil acidification type correspondence is established.

[0012] Step S7: Based on the new soil acidification type, determine the plots to be mixed with soil and carry out soil acidification control treatment according to the methods in steps S2 to S6.

[0013] Optionally, step S1, determining the soil acidification type in a large area of ​​cultivated land and delineating plots based on the soil pH measurement sensor set, and establishing the correspondence between plots and soil acidification types, includes:

[0014] A soil pH measurement sensor group is evenly deployed in a large area of ​​cultivated land. The soil pH measurement sensor group has multiple soil pH measurement sensors in the longitudinal direction to measure the soil pH values ​​at different depths.

[0015] Based on the soil pH values ​​at different depths, the soil acidification type determined by the soil pH measurement sensor group is obtained.

[0016] Obtain all adjacent soil pH measurement sensor groups corresponding to different soil acidification types, with the midpoint of the sensor group serving as the plot boundary point.

[0017] Connect the boundary points of adjacent plots with a spacing not exceeding a preset distance to obtain a closed shape, thereby delineating large-area arable land plots, where the soil acidification type within the plots is the same.

[0018] Optionally, step S2, obtaining topsoil from plots with the same soil acidification type and mixing the topsoil between plots, includes:

[0019] Obtain the soil acidification type for all plots and group plots with the same soil acidification type into the same topsoil treatment group;

[0020] Topsoil from all plots within the same topsoil treatment group was obtained and mixed uniformly.

[0021] Optionally, step S3, obtaining the source of acidic substances in the mixed soil and configuring and implementing an acidic substance removal plan to obtain pre-treated soil, and configuring a topsoil acidic substance prevention plan, includes:

[0022] To obtain the composition of acidic substances in the mixed soil and determine the source of the acidic substances;

[0023] Based on the acidic substances and their sources, a solution for removing and preventing acidic substances in the mixed soil is obtained.

[0024] Implement corresponding acid removal and prevention measures for the mixed soil to obtain pre-treated soil, and configure an acid prevention plan for the topsoil.

[0025] Optionally, the method for removing and preventing acidic substances in the mixed soil based on the source of the acidic substances includes:

[0026] Set up acidic substance removal and prevention schemes in the acidic substance treatment method database, and establish a correspondence between acidic substance removal and prevention methods and acidic substances;

[0027] Based on the acid composition of the mixed soil, the degree of influence of acid composition on the crops that can be planted in the plot is obtained.

[0028] The necessity of removing acidic substances is ranked according to the degree of impact of the composition of acidic substances on the crops that can be planted on the plot. When the necessity of removing acidic substances is higher than the preset necessity, a group of optional removal and prevention methods for acidic substances is constructed.

[0029] Obtain all the best available methods for the removal and prevention of acidic substances and set them into the data set, and build a solution for the removal and prevention of acidic substances to be validated;

[0030] For acidic substances within the proposed removal scheme that have conflicting effects, select appropriate removal and prevention methods and replace them one by one until there are no conflicting effects among all acidic substance removal methods within the proposed removal scheme.

[0031] Optionally, step S4, after applying amendments to the non-cultivated soil layer of the plot, backfilling the pre-treated soil into the plot, includes:

[0032] Based on soil acidification type, characteristics of the non-cultivated soil layer of the plot were obtained;

[0033] Based on the characteristics of the uncultivated soil, select and implement soil improvement measures for the uncultivated soil.

[0034] The pre-treated soil is backfilled into the plot according to the backfill volume of the topsoil in the same type of soil acidification.

[0035] Optionally, the selection and implementation of soil improvement measures based on the characteristics of the uncultivated soil layer includes:

[0036] Obtain the boundary line of adjacent plots, and use the boundary line as a reference to set the area within the threshold range on both sides of the boundary line as a buffer.

[0037] Based on the characteristics of the non-tillage soil in each plot, a pre-selected group of non-tillage soil improvement measures is selected from the non-tillage soil improvement measures database.

[0038] If the pre-selected improvement measures are selected from the pre-selected improvement measure group and the acid removal and prevention schemes of the mixed soil do not conflict, and there is no conflict between the pre-selected improvement measures, then the improvement measures for non-tillage soil are obtained.

[0039] The soil improvement measures for the non-cultivated layer are implemented in the non-buffer zone of the corresponding plots to control soil acidification in the non-cultivated layer of each plot.

[0040] Optionally, step S5, selecting planting crops based on the pH of the backfill soil and the soil acidification type of the corresponding plot, while implementing a topsoil acidification prevention plan and continuously adjusting soil parameters to ensure the cultivation quality of the planting crops, includes:

[0041] Based on the pH of the backfill soil and the soil acidification type of the corresponding plot, the matching degree of the planting crop and the soil acidification control effect within the plot is obtained.

[0042] Obtain crops with a matching degree of no less than the preset soil acidification resistance effect, and plant them;

[0043] Implement a topsoil acidification prevention program during crop planting and growth.

[0044] Real-time monitoring of crop growth and adjustment of soil parameters ensure the quality of crop cultivation.

[0045] Optionally, step S6, which involves returning straw to the field after each crop harvest and, before the start of the next planting cycle, re-delineating the plots according to the method in step S1 and establishing a new correspondence between the plots and soil acidification types, includes:

[0046] After the crops are harvested, the straw should be returned to the field.

[0047] Based on the farming patterns of the region where a large area of ​​arable land is located, the start time of the next farming cycle can be obtained.

[0048] Before the start of the next farming cycle, large-scale farmland plots are re-delineated according to the method in step S1, and the correspondence between the new plots and soil acidification types is obtained.

[0049] Optionally, step S7, determining the plots for soil mixing based on the new soil acidification type, and performing controlled soil acidification treatment according to the methods in steps S2-S6, includes:

[0050] After obtaining the new soil acidification type, follow steps S2 to S5 to mix the topsoil, improve the non-topsoil, and select and plant the new crops.

[0051] After the crops are harvested, the straw is returned to the field and new plots are demarcated according to the method in step S6.

[0052] The beneficial effects of this application include:

[0053] 1. Specific control of soil acidification in large areas of arable land. In the technical solution of this application, the soil acidification type in each area of ​​large-scale arable land is identified. Then, based on the identification results, a treatment method for the corresponding soil acidification type is selected and implemented. Based on this method, specific control of different types of soil acidification can be carried out, thereby ensuring more effective and professional acidification control for various types of soil acidification.

[0054] 2. Long-term control of soil acidification on large areas of arable land. The technical solution of this application analyzes the long-term and continuous acidification of large areas of arable land. Furthermore, after each crop harvest and straw return to the field, the next step involves re-controlling soil acidification according to the entire implementation process. Under these circumstances, long-term control of soil acidification on large areas of arable land can be achieved, thus preventing the soil from reverting to an acidic environment due to the failure to maintain long-term soil acidification control.

[0055] 3. Scientific control of soil acidification on large areas of arable land. In the technical solution of this application, different methods are used to control acidification in the topsoil and non-topsoil layers of each plot. Soil replacement and pre-treatment are also performed on the topsoil layer. The selected treatment methods avoid conflicts with each other. Furthermore, considering the significant differences in the composition of acidic substances, the physical properties of the soil itself, and the biological community of the non-topsoil layer with different acidification types, different methods are also used for each type. These methods do not conflict with the topsoil layer or the non-topsoil layers of adjacent plots with different soil acidification types, ensuring the scientific nature of the soil acidification control measures and achieving highly efficient control. Attached Figure Description

[0056] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the embodiments of this application or the prior art will be briefly introduced below. Obviously, the following description is only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The drawings are used to provide a further understanding of this disclosure and constitute a part of the specification. They are used together with the following detailed description to explain this disclosure, but do not constitute a limitation of this disclosure. In the drawings:

[0057] Figure 1 A flowchart illustrating a method for controlling soil acidification provided in this application embodiment;

[0058] Figure 2 This is a schematic diagram of a soil pH measurement sensor group in a method for controlling soil acidification provided in an embodiment of this application;

[0059] Figure 3 This is a schematic diagram of the plot distribution in a method for controlling soil acidification provided in an embodiment of this application;

[0060] Figure 4 This is a schematic diagram of the inter-plot buffer zone in a method for controlling soil acidification provided in an embodiment of this application. Detailed Implementation

[0061] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Furthermore, in the embodiments of this application, "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0062] Currently, based on agricultural practice results, soil acidification is a key issue that needs attention. Further analysis and research have revealed that there are various types of soil acidification, among which the main types include: (1) Surface acidification. This is characterized by the highest acidity in the surface layer (usually 0-30cm), with the pH value gradually increasing with depth. This phenomenon is more likely to occur in natural environments, but in farmland, it is more common in areas where organic fertilizers are applied in large quantities or where physiologically acidic fertilizers are applied. This type of problem mainly occurs during seed germination or seedling stages. (2) Subsurface acidification. This is characterized by the lower acidity in the surface layer, but a significant increase below the subsurface layer (e.g., 30-60cm). This phenomenon mainly occurs in farmland where excessive nitrogen fertilizer is applied, or where soil conditioners are applied only to the topsoil layer. The impact of this type on crops occurs after the seedling stage, when the crop roots easily penetrate to the subsurface depth. At this time, the roots are affected by the combined effects of aluminum toxicity, manganese toxicity, and nutrient deficiency in the soil, leading to reduced crop yield and decreased stress resistance. (3) Uniform acidification type. This is characterized by a relatively uniform pH value in the soil layer within a large depth range (usually 0~100cm). This phenomenon is more likely to occur in sandy soil farmland that is prone to acid rain or has been subjected to long-term and excessive use of physiologically acidic fertilizers. The impact of this type on crops will cover the entire growth cycle of the crops, because in order to increase yield, only a limited number of crops can be selected for planting.

[0063] In existing technologies, soil acidification types across an entire region are typically treated as a single type. However, in reality, farmland, especially large arable land, can exhibit different soil acidification types. Factors such as micro-topography, soil parent material and texture, historical land use patterns, and variations in agricultural management can easily lead to different soil acidification types. In other words, it is common for a large area of ​​arable land to contain different soil acidification types. Obviously, using the same soil acidification resistance method is insufficient for targeted control. Furthermore, a common practice is to assume that after performing soil acidification resistance operations for the entire crop growth cycle, the same method can be directly applied to subsequent farmland management. This approach not only makes it difficult to implement correct targeted soil acidification control methods but also easily leads to soil re-acidification due to the failure to consistently implement soil acidification control operations over a long period.

[0064] To address the problems existing in the prior art, this application discloses a method for controlling soil acidification, such as... Figure 1 The diagram shown is a flowchart of a method for controlling soil acidification according to an embodiment of this application. Specifically:

[0065] Step S1: Based on the soil pH measurement sensor group, determine the soil acidification type in a large area of ​​cultivated land and delineate the plots, and establish the correspondence between the plots and the soil acidification type.

[0066] Step S2: Obtain topsoil from plots with the same soil acidification type and mix the topsoil between plots.

[0067] Step S3: Obtain the source of acidic substances in the mixed soil and configure and implement an acidic substance removal plan to obtain pre-treated soil.

[0068] Step S4: After applying improvement measures to the non-cultivated soil of the plot, the pre-treated soil is backfilled into the plot.

[0069] Step S5: Select crops to be planted based on the pH of the backfill soil and the soil acidification type of the corresponding plot, and continuously adjust soil parameters to ensure the cultivation quality of the planted crops.

[0070] Step S6: After each crop is harvested, straw is returned to the field. Before the start of the next planting cycle, the plots are redefined according to the method in Step S1, and a new plot-to-soil acidification type correspondence is established.

[0071] Step S7: Based on the new soil acidification type, determine the plots to be mixed with soil and carry out soil acidification control treatment according to the methods in steps S2 to S6.

[0072] The purpose of all the above steps is to achieve targeted and long-term control over large areas of arable land, so as to gradually improve the fertility of large areas of arable land and continuously and effectively increase the pH value, thereby increasing crop yield and expanding the range of arable crops.

[0073] The following will provide a detailed explanation of all the steps above:

[0074] As described in step S110, the purpose of this step is to determine the types of soil acidification present in a large area of ​​cultivated land, and to analyze the locations of each soil acidification type in the plots, thereby determining the appropriate soil acidification control methods that can be used for each plot. Specifically:

[0075] Step S11: Distribute soil pH measurement sensor groups evenly in a large area of ​​cultivated land. The soil pH measurement sensor groups have multiple soil pH measurement sensors in the longitudinal direction to measure soil pH values ​​at different depths.

[0076] This step addresses the issue that, for determining the type of soil acidification in large areas of arable land, determining the soil pH value is clearly the core task. Furthermore, different types of soil acidification are determined based on the soil pH value at different depths, thus requiring pH measurements at different depths. This process necessitates the use of a device capable of achieving this effect and conducting soil pH measurements at various depths.

[0077] In this process, soil pH measurement sensor arrays need to be evenly deployed throughout the large area of ​​cultivated land to obtain measurement values.

[0078] In some embodiments, to reduce costs, a small number of soil pH measurement sensors can be used to measure the soil pH of the entire large area of ​​soil, then removed and measured at another location to achieve soil pH measurement of the entire large area of ​​cultivated land.

[0079] For the soil pH measurement sensor group, considering the root depth of common crops, the insertion depth of the sensor group in the soil layer is not less than 100cm.

[0080] The structure of the soil pH measurement sensor group is as follows: Figure 2 The diagram shows a soil pH measurement sensor group in a method for controlling soil acidification provided in this application embodiment. The outer part is made of rigid material to prevent the soil pH measurement sensor group from being difficult to insert into the soil layer. Multiple soil pH measurement sensors are evenly distributed within the rigid material. These sensors can measure the soil pH value at their respective depths. Each soil pH measurement sensor is equipped with a dedicated signal transmission structure to ensure that the sensor can independently transmit the measured pH value to the signal recognition device.

[0081] Among them, the soil pH measurement sensor group needs to be inserted vertically into the soil layer, so that the pH value of soil layers at different depths can be accurately measured.

[0082] Step S12: Based on the soil pH values ​​at different depths, obtain the soil acidification type determined by the soil pH measurement sensor group.

[0083] The purpose of this step is to determine the type of soil acidification in the area measured by the soil pH measurement sensor set, based on the results obtained from the acquired soil pH measurement sensor set.

[0084] The soil pH values ​​at different depths obtained by each soil pH measurement sensor group are recorded, and the soil acidification type obtained by the soil pH measurement sensor group is determined based on the relationship between the obtained layer depth and pH value.

[0085] Among them, for the soil pH measurement sensor group, after it is inserted into the soil, the soil pH value at different depths is obtained by sensors at different depths and recorded separately.

[0086] Step S13: Obtain all adjacent soil pH measurement sensor groups corresponding to different soil acidification types. The midpoint of the sensor group is the plot boundary point.

[0087] The purpose of this step is to determine the soil acidification type of each plot within a large area of ​​farmland after the soil pH measurement sensor group has determined the soil acidification type at its measurement location.

[0088] Detailed records are kept for each soil pH measurement sensor group or for each measurement point obtained through the soil pH measurement sensor group.

[0089] Specifically, the method involves acquiring two adjacent soil pH measurement sensor sets for each group and analyzing the soil acidification type at the monitoring point where this group of soil pH measurement sensor sets is located.

[0090] If adjacent soil pH measurement sensor groups are found to correspond to different soil acidification types, then these two soil pH measurement sensor groups are considered to be located in adjacent but different plots.

[0091] When adjacent soil pH measurement sensor groups are found to have different soil acidification types, the center point of the distance between the two soil pH measurement sensor groups is obtained, and this center point is considered to be the boundary point between two plots with different soil acidification types.

[0092] In order to obtain the boundary points, it is necessary to cover all soil pH measurement sensor groups or all measurement points in order to determine the boundary points of the entire large area of ​​cultivated land.

[0093] Step S14: Connect the boundary points of adjacent plots with a spacing not exceeding the preset spacing to obtain a closed shape, thereby delineating large-area arable land plots, wherein the soil acidification type within the plots is the same.

[0094] The purpose of this step is to specifically delineate plots within a large area of ​​arable land.

[0095] After obtaining the land parcel boundary points, it is necessary to acquire all boundary points with adjacent relationships and set adjacent boundary points into the same boundary point group.

[0096] The preset spacing can be set according to the needs and experience of the technicians, or the average value of the obtained dividing point spacing can be used as the preset spacing.

[0097] In this process, adjacent boundary points with a spacing not exceeding a preset distance are connected to form a closed shape.

[0098] For each dividing point, its adjacent dividing points are only the eight dividing points around it, without considering adjacent points in the diagonal direction.

[0099] After obtaining the closed plot, the soil acidification type within the plot is verified. Only when the soil acidification type is found to be the same for each soil pH measurement sensor group or measurement point within the obtained closed plot, can the plot be considered delineated. Figure 3 The diagram shows a plot distribution diagram of a method for controlling soil acidification provided in this application embodiment. The × mark in plot 1 indicates the location of the sensor or the insertion of the sensor, which is uniformly configured. In fact, in plots 1 to 5, the sensors or measurement points in each plot are determined according to the method of plot 1, resulting in 5 plots. The soil acidification types between each adjacent plot are different, and the soil acidification types in each plot are exactly the same.

[0100] The beneficial effect of step S1 is that, based on the fixed-point measurement of the soil acidification type of the large area of ​​cultivated land and the measurement of the entire large area, the clustering area of ​​each soil acidification type in the large area of ​​cultivated land can be determined, thereby obtaining the plots where different soil acidification types are located.

[0101] As described in step S2, the purpose of this step is to dilute the acidity of the topsoil, which is an artificial replacement of the topsoil. The reason for selecting topsoil layers with the same soil acidification type for soil mixing is that these areas have similar soil environments. The reason not to treat all soil layers is that this method might expose some accumulated, deep-seated adverse conditions to the surface, making it difficult for crops to grow. Specifically:

[0102] Step S21: Obtain the soil acidification type corresponding to all plots and set plots with the same soil acidification type into the same topsoil treatment group.

[0103] The purpose of this step is to identify plots of land where artificial replacement of the topsoil is possible, so that specific replacement treatments can be carried out subsequently.

[0104] After obtaining the land parcel information, the soil acidification type corresponding to all land parcels is analyzed.

[0105] After obtaining the soil acidification type for each plot, all plots with the same soil acidification type are set into the same topsoil treatment group. The so-called topsoil treatment group is a data group used to record the data of plots that need to be mixed with topsoil.

[0106] For all soil acidification types, all plots corresponding to the same soil acidification type are recorded in the same topsoil treatment group.

[0107] Step S22: Obtain the topsoil from all plots within the same topsoil treatment group and mix them evenly.

[0108] The purpose of this step is to neutralize the acidity by mixing topsoils within the same topsoil treatment group.

[0109] In this process, the topsoil of all plots within the same topsoil layer is collected and then mixed evenly.

[0110] In some embodiments, given the large volume of soil in the topsoil, soil mixing can be performed on topsoil from only two plots with the same soil acidification type.

[0111] Regarding soil mixing operations, soil mixing and treatment equipment and some usable industrial equipment can be used for processing, and this application does not impose any restrictions.

[0112] This requires obtaining and mixing the topsoil from all the topsoil treatment groups to obtain the mixed soil.

[0113] The beneficial effect of step S2 is that the topsoil of plots with the same soil acidification type can be mixed and treated, thereby pre-adjusting the pH value of the topsoil under the same soil acidification type environment, which can reduce the total cost of configuring acid removal methods in different plots.

[0114] As described in step S3, the purpose of this step is to further treat the mixed topsoil, especially in cases of excessive acidity, using physical and chemical treatments to improve soil properties before it can be used as topsoil. Specifically:

[0115] Step S31: Obtain the composition of acidic substances in the mixed soil and determine the source of acidic substances.

[0116] The purpose of this step is to determine the source of the acidic substances in the soil, identify the treatment methods for these acidic substances, and implement appropriate control measures for the sources of acidic substances during subsequent crop planting.

[0117] The composition of acidic substances in the mixed soil was actually tested to obtain the composition of acidic substances.

[0118] In terms of the source of acidic substances, it is necessary to analyze the possible sources of these acidic substances, such as natural environment (e.g., acid rain), applied chemical fertilizers or acidic fertilizers, geological conditions, etc., in order to determine the source of the various acidic substances present.

[0119] In cases where the source of acidic substances is fertilizer application, the solution to prevent acidic substances is to reduce the amount of such fertilizers applied and adjust the timing of their application.

[0120] Step S32: Based on the acidic substances and their sources, obtain a solution for removing and preventing acidic substances in the mixed soil.

[0121] The purpose of this step is to appropriately remove excessive acidic substances or other ions in the topsoil that can lower soil pH. Simultaneously, corresponding preventative measures need to be developed to address the sources of these acidic substances. Specifically:

[0122] S321. Set the acid substance removal and prevention schemes into the acid substance treatment method database, and establish the correspondence between acid substance removal and prevention methods and acid substances.

[0123] The purpose of this step is to incorporate methods for removing and preventing acidic substances into the constructed database based on practical and theoretical experience, and to establish a correspondence between these methods and the acidic substances themselves. This allows for the direct determination of methods for removing and preventing acidic substances based on the acidic substances themselves in the topsoil mixture.

[0124] The process involves recording all the acidic substances obtained and the corresponding practical and / or theoretical removal and prevention methods, and then setting them in an acidic substance treatment method database.

[0125] Among them, all methods for removing acidic substances, as well as methods for removing potential sources of acidic substances, are established in relation to the acidic substances themselves.

[0126] Among them, various acidic substances and their sources and prevention methods are also established in correspondence with acidic substances. At this time, three information correspondences are established between acidic substances & acidic substance sources, acidic substance removal methods and acidic substance prevention methods, which can be used in the subsequent screening of acidic substance removal and prevention methods.

[0127] S322. Based on the acid composition of the mixed soil, obtain the degree of influence of the acid composition on the crops that can be planted in the plot.

[0128] The purpose of this step is to establish a reference point to lay the foundation for subsequent treatment method selection by setting a reference object. There are numerous methods in multiple fields for the removal of acidic substances in soil, such as chemical treatment, physical treatment and biological treatment. The methods contained in these fields may conflict with each other and cannot be used at the same time, nor is it possible to apply all methods.

[0129] Among them, considering that the purpose of controlling soil acidification in large areas of cultivated land is to improve soil fertility in order to increase crop yield, the impact of plots on cultivable crops is taken as the basis of analysis.

[0130] This requires analyzing the composition of acidic substances in the mixed soil and their impact on crop growth.

[0131] In determining the impact of acidic substances on cultivable crops, in addition to analyzing pH values, it is also necessary to analyze other substances such as heavy metal ions and undegraded fertilizers.

[0132] S323. Rank the necessity of acid substance removal according to the degree of impact of the acid substance composition on the crops that can be planted on the plot. When the necessity of acid substance removal is higher than the preset necessity, construct a group of optional acid substance removal and prevention methods.

[0133] The purpose of this step is to determine whether the presence of certain substances in the topsoil does not require extremely high removal standards, while other substances require deep removal. Whether these substances need to be treated requires specific analysis.

[0134] Among them, the necessity of removing acidic substances from the degree of their impact on cultivable crops is ranked. This ranking is actually directly equivalent to the impact of these substances on the growth status of cultivable crops.

[0135] Regarding the necessity of presetting, on the one hand, it can be set directly based on the experience of technical personnel, and on the other hand, it can be determined by directly obtaining the quantitative average value of the impact of growth status.

[0136] When it is found that the necessity for removing acidic substances is higher than the preset necessity, it is considered that the acidic substances must be removed and prevented.

[0137] Based on the established database of acidic substance treatment methods, after identifying the acidic substances that need to be removed, the appropriate substance removal and prevention methods are selected directly based on the various correspondences existing in the database.

[0138] S324. Obtain all the best possible removal and prevention methods for acidic substances and set them into the data set, and construct the acidic substance removal and prevention scheme to be validated.

[0139] The purpose of this step is to identify the appropriate method to be used when there are multiple treatment methods available for the removal and prevention of the same acidic substance.

[0140] For all methods of treating acidic substances, including both removal and prevention, to achieve the best treatment results, it is obvious that the best method should be selected for each type of acidic substance.

[0141] For a single plot of land, all available methods need to be set into the database corresponding to that plot, thereby establishing a solution for the removal and prevention of acidic substances to be verified.

[0142] In some embodiments, other related auxiliary schemes are also set up in the established acid substance removal and prevention scheme to further improve the removal and prevention effect of acid substances.

[0143] S325. Obtain the available removal and prevention methods for acidic substances within the acidic substance removal scheme to be verified, which have conflicting implementation effects, and replace them one by one until there are no conflicting implementation effects among all acidic substance removal methods within the acidic substance removal scheme to be verified.

[0144] The purpose of this step is to address the issue that, given the existence of multiple directly implemented methods for removing and preventing acidic substances in the established and validated acidic substance removal and prevention schemes, these methods may have conflicting performance and effectiveness, leading to decreased results.

[0145] Among them, the methods of obtaining the acidic substance removal and prevention schemes to be verified are conflicting. For example, the selected methods are to add quicklime and increase the number of earthworms and other native animals. However, based on the growth environment requirements of native animals, the addition of quicklime will cause the animals to die or escape, resulting in poor effect. Therefore, the two methods are obviously conflicting.

[0146] Among them, for the conflicting methods in the acidic substance removal and prevention schemes to be verified, one method should be replaced. Taking the two methods mentioned above as examples, the so-called replacement means that either the method of applying quicklime should be changed to another method that will not have a negative impact on native animals, or other biological control methods should be used to replace the method of applying native animals.

[0147] This involves verifying whether there are any conflicts between all methods in the acid removal and prevention scheme and other methods. Once it is confirmed that each method does not conflict with any other method, the final acid removal and prevention scheme is considered to have been established.

[0148] Step S33: Implement corresponding acid removal and prevention measures for the mixed soil to obtain pre-treated soil, and configure an acid prevention plan for the topsoil.

[0149] The purpose of this step is to treat the topsoil with acidic substances and to develop preventative measures to avoid the reaccumulation of acidic substances.

[0150] The obtained mixed soil needs to be treated based on the obtained acid removal method to reduce the acid content in the mixed soil.

[0151] In particular, after the acidic substances in the mixed soil were removed, the treated soil can be considered suitable for backfilling. At the same time, methods for preventing acidic substances in these topsoil layers were also determined, which can provide preventive guidance for the subsequent specific use of the soil.

[0152] The beneficial effects of step S3 are that, on the one hand, the mixed soil of the topsoil is treated based on the acid substance removal scheme, avoiding the presence of too much acid in the mixed soil, which would result in insufficient soil acidification control. On the other hand, it also avoids the possible conflicts between the acid substance removal and prevention methods in the mixed soil, so as to ensure that all the methods selected can play their best role.

[0153] As described in step S4, the purpose of this step is to backfill the topsoil after the soil acidification control process has been carried out, the mixed soil in the topsoil has been treated, and a soil acidification prevention plan for crop planting and growth has been determined. Specifically:

[0154] Step S41: Based on the soil acidification type, obtain the characteristics of the uncultivated soil layer of the plot.

[0155] The purpose of this step is that the soil parameters and acidification control methods of the non-tillage layer are different in different types of soil acidification, and these soils cannot be treated by simple direct tillage. Therefore, it is necessary to carry out special treatment for these soils based on the characteristics of the non-tillage layer soil.

[0156] Among them, based on the soil acidification type, specific characteristics of the uncultivated soil are obtained, including compaction, heavy metal ion content, and water content.

[0157] Step S42: Based on the characteristics of the non-tillage layer soil, select and implement soil improvement measures for the non-tillage layer soil.

[0158] The purpose of this step is, after obtaining the characteristics of the non-tillage soil, to determine the treatment method for the non-tillage soil. This is to avoid the situation where the tillage layer has undergone acidification control treatment, but the non-tillage layer contains a large amount of acidic substances, which would significantly reduce the effectiveness of soil acidification resistance. Specifically:

[0159] Step S421: Obtain the boundary line of adjacent plots, and use the boundary line as a reference to set the area within the threshold range on both sides of the boundary line as a buffer zone.

[0160] The purpose of this step is that, in the technical solution of this application, two adjacent plots have different soil acidification types, which will affect each other. At the same time, the methods selected for different soil types may conflict with each other, which may cause serious clumping problems between the two plots in severe cases. Therefore, it is necessary to adopt a physical separation method to separate them.

[0161] The purpose of this step is to determine the specific parameters of the physically separated regions, so that the buffer can be constructed based on these parameters.

[0162] Specifically, the buffer zone is used as a transition zone within a certain range on both sides of the boundary line.

[0163] While this description only outlines the width and location of the buffer zone, in practice, if necessary—for example, in cases of deep digging or deep burial of straw back into the field, especially when one plot uses these methods while an adjacent plot uses other methods—the buffer zone may also include a longitudinal buffer, forming a physical barrier between the two plots. For example... Figure 4 The diagram shown is a schematic diagram of the buffer zone between plots in a method for controlling soil acidification provided in an embodiment of this application. In fact, for plots 1 to 5, a buffer zone is set between every two adjacent plots, but it is not shown here.

[0164] Step S422: Based on the characteristics of the non-cultivated soil in each plot, select the corresponding pre-selected improvement measures group for the non-cultivated soil from the non-cultivated soil improvement measures database.

[0165] The purpose of this step is that there are multiple treatment methods for non-cultivated soils for each type of soil acidification, and the focus of the methods for different types of soil acidification is completely different, and even the methods themselves are completely different, so special selection is required.

[0166] Based on the type of soil acidification corresponding to each plot, the appropriate soil acidification remediation measures are determined from the overall picture.

[0167] Further analysis was conducted on the characteristics of the non-cultivated soil layer within each plot, and a further screening was carried out from the identified available soil acidification improvement measures.

[0168] For further screening results, especially when it is determined that multiple soil improvement methods need to be used together, the method disclosed in step S32 should be used to select the soil improvement method in order to avoid conflicts between the selected methods and to use the best soil acidification improvement method.

[0169] For the pre-set soil acidification improvement measures, these methods are all set into the data group to obtain the pre-selected improvement measure group.

[0170] Step S423: Select from the pre-selected improvement measures group a pre-selected improvement measure item that does not conflict with the acid removal and prevention schemes of the mixed soil, and there is no conflict between the pre-selected improvement measures, and then obtain the improvement measures for the non-cultivated layer soil.

[0171] The purpose of this step is to avoid the fact that, in the specific process of improving acidification in non-tillage soils, the methods ultimately selected may conflict with each other, and may also conflict with the methods selected for the removal and prevention of acidic substances in the tillage layer, leading to a decrease in effectiveness.

[0172] In the case of conflicts between soil acidification improvement methods from the pre-selected improvement measures group, the method disclosed in step S32 can be used to handle them.

[0173] Among them, for the methods selected from the pre-selected improvement measures group, it is also necessary to conduct a conflict analysis with the acid removal scheme of the mixed soil, and adjust it based on the analysis results. The specific method is as described in step S32, and will not be repeated here.

[0174] Once it has been confirmed that all selected methods can be used normally, then this method can be applied.

[0175] Step S424: Implement the soil improvement measures for the non-cultivated layer in the non-buffer zone of the corresponding plot to control soil acidification in the non-cultivated layer of each plot.

[0176] The purpose of this step is to implement the selected methods after considering the soil acidification improvement measures for the uncultivated layer.

[0177] This includes identifying the non-buffer zone of the land parcel and carrying out preliminary treatments such as excavation and sun-drying.

[0178] Among them, the improvement measures for the selected non-cultivated soil will be implemented in the non-buffer zone of the corresponding plots after the preliminary treatment, so as to improve soil acidification and control soil acidification.

[0179] Step S43: According to the backfill volume of the topsoil in the same type of soil acidification, the pre-treated soil is backfilled into the plot.

[0180] The purpose of this step is to backfill the soil after mixing and treating the topsoil of the plot, so that the plot can then be used for crop planting.

[0181] During the acquisition of topsoil for each plot, the volume of soil extracted is already known. At this point, the mixed soil can be backfilled based on this value.

[0182] Obviously, it is necessary to pre-treat all plots of land in the large area of ​​cultivated land before backfilling with soil.

[0183] In the backfilling process, it is necessary to ensure that the soil after the initial treatment corresponds to the corresponding soil acidification type of the plot, and mismatch is prohibited.

[0184] The beneficial effects of step S4 are that, on the one hand, it can ensure reasonable and effective soil acidification improvement of the non-cultivated layer of each plot; on the other hand, it can ensure that the soil acidification improvement method used in the non-cultivated layer does not conflict with the soil acidification removal and prevention methods used in the mixed soil of the cultivated layer; in addition, it avoids mutual influence between the soil acidification improvement methods used in adjacent plots, thereby fully improving the soil acidification improvement effect of the non-cultivated layer.

[0185] As described in step S5, the purpose of this step is to complete the final step in the entire soil acidification control system: crop planting and subsequent straw return to the field, thereby improving soil looseness and reducing soil acidity. Specifically:

[0186] S51. Based on the pH of the backfill soil and the soil acidification type of the corresponding plot, obtain the matching degree of the soil acidification control effect between the planted crops and the plot.

[0187] The purpose of this step is to consider the fact that the backfill soil has only undergone one deacidification process and that the soil in the non-cultivated layer is likely to have a significant impact on the growth of crops. Therefore, whether considering the crop's resistance to the environment or the large amount of crop straw produced, it is necessary to consider the crops that can be planted.

[0188] The process involves measuring the pH value and other characteristic parameters of the backfill soil, and then selecting suitable crops to plant based on the obtained information.

[0189] In addition, the root depth of the crop and the extent to which the uncultivated layer may affect the crop can be considered to select crops with higher resistance.

[0190] Among them, the matching degree between the planted crop and the soil acidification control effect is essentially an analysis of whether the planted crop can grow normally in the treated plot.

[0191] S52. Obtain planting crops with a matching degree of not less than the preset soil acidification resistance effect, and plant them.

[0192] The purpose of this step is to identify the specific crop and then plant it.

[0193] Among them, the matching degree of the preset soil acidification resistance effect means that the crop can still grow normally or maintain a normal growth state to a large extent on the basis of the soil acidification resistance treatment scheme.

[0194] This requires ensuring that the selected crops can maintain optimal growth on plots that have already been tested for soil acidification resistance, while also avoiding the use of excessive substances that could cause soil acidification during the growth process.

[0195] After the crops are determined, they are planted in the corresponding plots of land for cultivation.

[0196] S53. Implement a topsoil acidification prevention program during the planting and growth of crops.

[0197] The purpose of this step is to implement an acidification resistance scheme for the topsoil.

[0198] For the acidification resistance of the topsoil in each plot, corresponding acidification prevention plans have been set up. Therefore, in the specific crop planting, it is necessary to fully implement the plan.

[0199] In some embodiments, if it is found that the implemented acidification resistance scheme leads to crop yield reduction, other schemes can be added on top of the established prevention schemes to ensure crop yield while implementing acidification resistance in the topsoil.

[0200] S54. Monitor the growth status of planted crops in real time and adjust soil parameters to ensure the cultivation quality of planted crops.

[0201] The purpose of this step is to monitor the growth of the planted crops and use the monitoring results as the basis for constructing auxiliary plans.

[0202] Among these methods, real-time monitoring of the growth status of planted crops is conducted to adjust the soil. This can be achieved by introducing biostimulants to adjust the growth status of planted crops, such as by using the method described in patent CN120167170A or similar methods, thereby regulating soil parameters and ensuring the cultivation quality of planted crops. Of course, other methods can also be used for this purpose.

[0203] Alternatively, appropriate physical, chemical, or biological methods can be used for treatment. For example, the survival rate of native animals can be monitored, and if the survival rate is found to be insufficient, additional native animals can be introduced into the plot to improve the cultivation quality of the crops.

[0204] Other predictive methods can also be used, such as adjusting the soil in advance based on precipitation forecasts and applying quantitative organic fertilizer topdressing based on fertilizer consumption forecasts.

[0205] The beneficial effect of this step is that it allows for real-time monitoring of the growth status of planted crops during specific soil parameter analysis, and the adjustment of soil parameters based on the monitoring results during crop growth to ensure crop planting quality. This also ensures the quality of crop straw, and with guaranteed straw quantity, straw return to the field can be implemented more effectively.

[0206] As described in step S6, the purpose of this step is to enable the return of straw to the field during the soil acidification control process, thereby increasing the organic matter in the soil and achieving the effect of controlling soil acidification. Specifically:

[0207] Step S61: After the planted crops are harvested, the straw is returned to the field.

[0208] The purpose of this step is to return the straw to the field after obtaining the crop straw. This method can improve the organic matter and transport capacity of the soil, thereby controlling soil acidification.

[0209] Among these, for straw return to the field, full return is preferred to increase the amount of organic matter produced.

[0210] In the process of returning straw to the field, it can be processed in accordance with the method described in patent CN120898573A or similar methods. Of course, other methods can also be used, and this application does not limit them.

[0211] Step S62: Based on the farming patterns of the large area of ​​cultivated land, obtain the start time of the next farming cycle.

[0212] The purpose of this step is to determine the start time of the next farming cycle and the timing of soil acidification type testing, so that the start time of the next farming cycle can be determined based on the results.

[0213] Among these methods, the start time of the next farming cycle is predicted based on the local farming schedule.

[0214] In addition, the start time of the next planting cycle can be determined based on weather monitoring. Obviously, other methods can also be used, and this application does not limit them.

[0215] Step S63: Before the start of the next farming cycle, re-delineate large-scale farmland plots according to the method in step S1, and obtain the correspondence between the new plots and soil acidification types.

[0216] The purpose of this step is that, within each crop planting cycle, after the soil acidification resistance treatment of the previous planting cycle and the weather changes during the fallow period, the soil acidification type and soil acidification data of the plots in the previous planting cycle may have changed, so it is necessary to remeasure and delineate the plots.

[0217] Before the start of the next farming cycle, measurements need to be taken according to the method in step S1 to redefine the plots.

[0218] The beneficial effect of step S6 is that by redefining the plots, the soil acidification prevention and control methods for different plots can be reconfigured based on the obtained measurement results, so as to comprehensively improve the specialization of soil acidification prevention and control work. Furthermore, monitoring is carried out before the start of each soil cultivation cycle, which can achieve long-term effectiveness of soil acidification prevention and control.

[0219] As described in step S7, the purpose of this step is to cultivate crops and conduct soil acidification resistance assessments during the new crop planting cycle. Specifically:

[0220] Step S71: After obtaining the new soil acidification type, follow the methods in steps S2 to S5 to carry out soil mixing of the topsoil, soil improvement of the non-topsoil, and selection and planting of crops for the new plot.

[0221] The purpose of this step is to perform all soil acidification control operations for the next planting cycle.

[0222] In this process, soil treatment is carried out according to the methods disclosed in steps S2 to S5, and crop selection and planting are carried out, as well as the maintenance of planting quality.

[0223] Step S72: After the crops are harvested, follow the method in step S6 to carry out straw return to the field and delineate new plots.

[0224] The purpose of this step is to achieve seamless integration across all soil acidification control operation cycles.

[0225] The method in step S6 is used to return straw to the field and to delineate plots before the start of the next new crop planting cycle.

[0226] The beneficial effect of step S7 is that it can effectively connect the planting cycles of various crops, thereby achieving long-term control over soil acidification in large areas of cultivated land.

[0227] The beneficial effects of this application include:

[0228] 1. Specific control of soil acidification in large areas of arable land. In the technical solution of this application, the soil acidification type in each area of ​​large-scale arable land is identified. Then, based on the identification results, a treatment method for the corresponding soil acidification type is selected and implemented. Based on this method, specific control of different types of soil acidification can be carried out, thereby ensuring more effective and professional acidification control for various types of soil acidification.

[0229] 2. Long-term control of soil acidification on large areas of arable land. The technical solution of this application analyzes the long-term and continuous acidification of large areas of arable land. Furthermore, after each crop harvest and straw return to the field, the next step involves re-controlling soil acidification according to the entire implementation process. Under these circumstances, long-term control of soil acidification on large areas of arable land can be achieved, thus preventing the soil from reverting to an acidic environment due to the failure to maintain long-term soil acidification control.

[0230] 3. Scientific control of soil acidification on large areas of arable land. In the technical solution of this application, different methods are used to control acidification in the topsoil and non-topsoil layers of each plot. Soil replacement and pre-treatment are also performed on the topsoil layer. The selected treatment methods avoid conflicts with each other. Furthermore, considering the significant differences in the composition of acidic substances, the physical properties of the soil itself, and the biological community of the non-topsoil layer with different acidification types, different methods are also used for each type. These methods do not conflict with the topsoil layer or the non-topsoil layers of adjacent plots with different soil acidification types, ensuring the scientific nature of the soil acidification control measures and achieving highly efficient control.

[0231] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to computer program instructions. The aforementioned computer program can be stored in a non-volatile storage medium, and when executed, it performs the steps of the above method embodiments. Alternatively, if the integrated unit of the present invention is implemented as a software functional module and sold or used as an independent product, it can also be stored in a non-volatile storage medium. Based on this understanding, the technical solution of the embodiments of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a non-volatile storage medium and includes several instructions to cause an electronic device (which may be a personal computer, server, network device, etc.) to execute all or part of the methods described in the various embodiments of the present invention.

[0232] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for controlling soil acidification, characterized in that, The method includes: Step S1: Based on the soil pH measurement sensor group, determine the soil acidification type in a large area of ​​cultivated land and delineate the plots, and establish the correspondence between the plots and the soil acidification type; Step S2: Obtain topsoil from plots with the same soil acidification type and mix the topsoil between plots; Step S3: Obtain the source of acidic substances in the mixed soil and configure and implement an acidic substance removal plan to obtain pre-treated soil and configure a topsoil acidic substance prevention plan. Step S4: After applying improvement measures to the non-cultivated soil of the plot, the pre-treated soil is backfilled into the plot; Step S5: Select crops to be planted based on the pH of the backfill soil and the soil acidification type of the corresponding plot, while implementing a topsoil acidification prevention plan and continuously adjusting soil parameters to ensure the cultivation quality of the planted crops. Step S6: After each crop is harvested, straw is returned to the field. Before the start of the next planting cycle, the plots are redefined according to the method in Step S1, and a new plot-to-soil acidification type correspondence is established. Step S7: Based on the new soil acidification type, determine the plots to be mixed with soil and carry out soil acidification control treatment according to the methods in steps S2 to S6.

2. The method for controlling soil acidification according to claim 1, characterized in that, Step S1, based on the soil pH measurement sensor set, determines the soil acidification type in a large area of ​​cultivated land and delineates plots, and establishes the correspondence between plots and soil acidification types, including: A soil pH measurement sensor group is evenly deployed in a large area of ​​cultivated land. The soil pH measurement sensor group has multiple soil pH measurement sensors in the longitudinal direction to measure the soil pH values ​​at different depths. Based on the soil pH values ​​at different depths, the soil acidification type determined by the soil pH measurement sensor group is obtained. Obtain all adjacent soil pH measurement sensor groups corresponding to different soil acidification types, with the midpoint of the sensor group serving as the plot boundary point. Connect the boundary points of adjacent plots with a spacing not exceeding a preset distance to obtain a closed shape, thereby delineating large-area arable land plots, where the soil acidification type within the plots is the same.

3. The method for controlling soil acidification according to claim 1, characterized in that, Step S2, obtaining topsoil from plots with the same soil acidification type and mixing the topsoil between plots, includes: Obtain the soil acidification type for all plots and group plots with the same soil acidification type into the same topsoil treatment group; Topsoil from all plots within the same topsoil treatment group was obtained and mixed uniformly.

4. The method for controlling soil acidification according to claim 1, characterized in that, Step S3 involves obtaining the source of acidic substances in the mixed soil and configuring and implementing an acidic substance removal plan to obtain pre-treated soil and configuring a topsoil acidic substance prevention plan, including: To obtain the composition of acidic substances in the mixed soil and determine the source of the acidic substances; Based on the composition and source of acidic substances, a solution for the removal and prevention of acidic substances in mixed soil is obtained. Implement corresponding acid removal and prevention measures for the mixed soil to obtain pre-treated soil, and configure an acid prevention plan for the topsoil.

5. The method for controlling soil acidification according to claim 4, characterized in that, The method for removing and preventing acidic substances in the mixed soil based on the source of the acidic substances includes: Set up acidic substance removal and prevention schemes in the acidic substance treatment method database, and establish a correspondence between acidic substance removal and prevention methods and acidic substances; Based on the acid composition of the mixed soil, the degree of influence of acid composition on the crops that can be planted in the plot is obtained. The necessity of removing acidic substances is ranked according to the degree of impact of the composition of acidic substances on the crops that can be planted on the plot. When the necessity of removing acidic substances is higher than the preset necessity, a group of optional removal and prevention methods for acidic substances is constructed. Obtain all the best available methods for the removal and prevention of acidic substances and set them into the data set, and build a solution for the removal and prevention of acidic substances to be validated; For acidic substances within the proposed removal scheme that have conflicting effects, select appropriate removal and prevention methods and replace them one by one until there are no conflicting effects among all acidic substance removal methods within the proposed removal scheme.

6. The method for controlling soil acidification according to claim 1, characterized in that, Step S4, after applying soil amendment measures to the non-cultivated soil layer of the plot, backfilling the pre-treated soil into the plot, includes: Based on soil acidification type, characteristics of the non-cultivated soil layer of the plot were obtained; Based on the characteristics of the uncultivated soil, select and implement soil improvement measures for the uncultivated soil. The pre-treated soil is backfilled into the plot according to the backfill volume of the topsoil in the same type of soil acidification.

7. The method for controlling soil acidification according to claim 6, characterized in that, The selection and implementation of soil improvement measures based on the characteristics of the uncultivated soil layer include: Obtain the boundary line of adjacent plots, and use the boundary line as a reference to set the area within the threshold range on both sides of the boundary line as a buffer. Based on the characteristics of the non-tillage soil in each plot, a pre-selected group of non-tillage soil improvement measures is selected from the non-tillage soil improvement measures database. If the pre-selected improvement measures are selected from the pre-selected improvement measure group and the acid removal and prevention schemes of the mixed soil do not conflict, and there is no conflict between the pre-selected improvement measures, then the improvement measures for non-tillage soil are obtained. The soil improvement measures for the non-cultivated layer are implemented in the non-buffer zone of the corresponding plots to control soil acidification in the non-cultivated layer of each plot.

8. The method for controlling soil acidification according to claim 1, characterized in that, Step S5 involves selecting crops based on the pH of the backfill soil and the soil acidification type of the corresponding plot, implementing a topsoil acidification prevention plan, and continuously adjusting soil parameters to ensure the cultivation quality of the crops. This includes: Based on the pH of the backfill soil and the soil acidification type of the corresponding plot, the matching degree of the planting crop and the soil acidification control effect in the plot is obtained. Obtain crops with a matching degree of no less than the preset soil acidification control effect, and plant them; Implement a topsoil acidification prevention program during crop planting and growth. Real-time monitoring of crop growth and adjustment of soil parameters ensure the quality of crop cultivation.

9. The method for controlling soil acidification according to claim 1, characterized in that, Step S6 involves returning straw to the field after each crop harvest and, before the start of the next planting cycle, re-delineating the land plots according to the method in step S1 and establishing a new correspondence between the land plots and soil acidification types, including: After the crops are harvested, the straw should be returned to the field. Based on the farming patterns of the region where a large area of ​​arable land is located, the start time of the next farming cycle can be obtained. Before the start of the next farming cycle, large-scale farmland plots are re-delineated according to the method in step S1, and the correspondence between the new plots and soil acidification types is obtained.

10. A method for controlling soil acidification according to claim 1, characterized in that, Step S7 involves identifying the plots for soil mixing based on the new soil acidification type, and then performing controlled soil acidification treatment according to the methods in steps S2-S6, including: After obtaining the new soil acidification type, follow steps S2 to S5 to mix the topsoil, improve the non-topsoil, and select and plant the new crops. After the crops are harvested, the straw is returned to the field and new plots are demarcated according to the method in step S6.

Images