Method for efficiently returning corn straw to field

Abstract

The invention discloses an efficient corn straw returning method, which belongs to the technical field of agriculture and comprises the following steps: layering soil of a large-scale corn field along the vertical direction, and acquiring the organic matter concentration of each soil layer; obtaining a soil middle layer organic matter concentration value in the corn field to obtain corn field subareas of the large-range corn field; based on the organic matter concentration historical numerical value of each soil layer in the corn field subareas, obtaining an organic matter transfer rule between the soil layers; on the basis of an organic matter transfer rule between soil layers, the returning straw amount of the corn field subareas is obtained; based on the amount of returning straw of the corn field subareas, the putting amount of a corrosion promoting agent of the corn field subareas is obtained; the method comprises the following steps: preparing returning straws and a corrosion promoting agent based on the returning straw amount of corn field subareas and the corrosion promoting agent putting amount of the corn field subareas, and setting a new soil bottom layer in autumn; and constructing a new soil middle layer and a new soil surface layer based on the new soil bottom layer. The problem that in the prior art, the amount of returned straw is set unreasonably is solved. And the obtaining effect of straw returning operation is fully improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of agricultural technology, and particularly relates to a high-efficiency corn stalks field returning method. BACKGROUND

[0002] The northeast black soil region is an important base for corn production in China, with an annual planting area of nearly 220 million mu, and corn production accounting for 34% of the country's total, which is of great strategic significance to the country's food security. In recent years, the soil fertility of corn fields in the northeast region has been declining, which has become an important factor restricting the increase of corn yield per unit.

[0003] Stalks field returning is an important measure to improve the soil fertility of corn fields. However, the full amount of corn stalks field returning rate is low in the northeast black soil region, and the stalks residue is too large after being returned to the field by shallow rotation and deep plowing in spring, which affects corn transplanting and root growth. In addition, the soil temperature in the northeast region is low for a long time, and the stalks field returning treatment is only carried out for a short time, which often cannot fully play the effect of stalks field returning, resulting in a decrease in the effect of stalks field returning. In addition, the amount of stalks put into the field is not a research object in stalks field returning, which can easily lead to unreasonable amount of stalks put into the field, resulting in resource waste, or the stalks cannot be completely decomposed due to too much stalks field returning, affecting root development, or the amount of stalks put into the field is insufficient, resulting in a decrease in the effect of stalks field returning.

[0004] Therefore, how to develop a corn stalks field returning method that can guarantee the effect of stalks field returning and avoid resource waste or insufficient amount of stalks put into the field, so as to realize high-efficiency corn stalks field returning, is a technical problem that needs to be solved by those skilled in the art. SUMMARY

[0005] In order to solve the problems existing in the current technical solution of corn stalks field returning, the application discloses a corn stalks field returning method, which aims to reasonably determine the amount of stalks put into the field and orderly adjust the soil layering. On the basis of ensuring reasonable amount of stalks put into the field, the position of the soil layer is adjusted to allow the corn stalks to have a longer decomposition time, increase the release amount of organic matter of the corn stalks, and achieve the purpose of high-efficiency corn stalks field returning. Specifically, A high-efficiency corn stalks field returning method, the method comprising: Layering the soil of a large range of corn fields along the vertical direction, and obtaining the organic matter concentration of each soil layer; Obtaining the organic matter concentration value of the middle layer of the soil in the large range of corn fields to obtain the corn field partition of the large range of corn fields; Based on the historical value of the organic matter concentration of each soil layer in the corn field partition, obtaining the organic matter transfer rule between the soil layers; Based on the organic matter transfer rule between the soil layers, obtaining the amount of stalks field returning of the corn field partition; based on the amount of returned straw of the corn field subarea, obtaining the amount of the corrodent to be put into the corn field subarea; based on the amount of returned straw of the corn field subarea and the amount of the corrodent to be put into the corn field subarea, arranging the returned straw and the corrodent, and setting a new soil bottom layer in the autumn; based on the new soil bottom layer, constructing a new soil middle layer and a new soil surface layer.

[0006] Optionally, the soil of the large-scale corn field is layered along the vertical direction, and the organic matter concentration of each soil layer is obtained, including: obtaining the soil environment of the planting area of the large-scale corn field, and determining the thickness of the layered soil; based on the soil bulk density distribution of the large-scale corn field, determining the depth of the soil surface layer; removing the depth of the soil surface layer from the thickness of the layered soil to obtain the thickness of the remaining soil layer; dividing the thickness of the remaining soil layer equally, and the soil layers corresponding to the divided soil layer thicknesses from top to bottom are the soil middle layer and the soil bottom layer, respectively; obtaining the organic matter concentration of each soil layer in all sampling areas in the large-scale corn field.

[0007] Optionally, the organic matter concentration value of the soil middle layer in the large-scale corn field is obtained to obtain the corn field subarea of the large-scale corn field, including: obtaining the organic matter concentration of the soil middle layer in the organic matter concentration of each soil layer, and determining the collection position of the organic matter concentration value of the soil middle layer; including all adjacent collection positions in the same range interval, and the difference of the corresponding organic matter concentration value of the soil middle layer is not higher than the preset concentration difference, the range interval is the corn field subarea of the large-scale corn field; The corn field subarea of the large-scale corn field contains no less than 1 collection position.

[0008] Optionally, based on the historical values of the organic matter concentration of each soil layer in the corn field subarea, the organic matter transfer rule between the soil layers is obtained, including: obtaining the historical data of the organic matter concentration of each soil layer in the corn field subarea and preprocessing to obtain the preprocessed organic matter concentration data of each soil layer; based on the preprocessed organic matter concentration data of each soil layer, obtaining the organic matter concentration curve of each soil layer; based on the organic matter concentration curve of each soil layer, obtaining the organic matter transfer rule between the soil layers.

[0009] Optionally, the organic matter concentration historical data of each soil layer in the corn field partition is acquired and preprocessed to obtain the preprocessed organic matter concentration data of each soil layer, including: The corn variety planted in the corn field partition and the corn growth cycle are acquired to obtain the organic matter consumption of the corn; The fertilizer application time and the fertilizer application amount of the corn field partition are acquired to obtain the exogenous organic matter increase amount; The exogenous organic matter increase amount and the organic matter consumption of the corn are combined with the historical data of the soil surface layer organic matter concentration to obtain the preprocessed organic matter concentration data of the soil surface layer; The composition curve of the historical data of the soil middle layer organic matter concentration in the corn field partition is acquired, and the numerical change similarity between the historical data of the soil middle layer organic matter concentration and the historical data of the soil surface layer organic matter concentration is acquired; When the numerical change similarity is not less than a preset similarity, the time period when the organic matter concentration of the soil middle layer changes is acquired; The data fluctuation on the historical data curve of the soil middle layer organic matter concentration is removed to obtain the preprocessed organic matter concentration data of the soil middle layer.

[0010] Optionally, the organic matter transfer rule between the soil layers is acquired based on the organic matter concentration change curve of each soil layer, including: The organic matter transfer rule between the soil layers includes the organic matter transfer rule between the soil bottom layer and the soil middle layer, and the organic matter transfer rule between the soil middle layer and the soil surface layer; The actual organic matter concentration equation of each soil layer is acquired based on the preprocessed organic matter concentration curve of each soil layer; The organic matter concentration change value generated by the corn straw decomposition process of each soil layer is acquired, and the theoretical organic matter concentration equation of each soil layer is acquired; The organic matter transfer rule between the soil layers is acquired based on the actual organic matter concentration equation and the theoretical organic matter concentration equation of each soil layer.

[0011] Optionally, the amount of straw returned to the field in the corn field partition is acquired based on the organic matter transfer rule between the soil layers, including: After the corn is harvested, the measured organic matter concentration value of the soil bottom layer in the corn field partition is acquired, and the measured organic matter concentration value of the soil bottom layer is adjusted to a new soil middle layer organic matter concentration; The measured organic matter concentration value of the soil surface layer in the corn field partition is acquired, and the measured organic matter concentration value of the soil surface layer is adjusted to a new soil bottom layer organic matter concentration; Based on the organic matter transfer rule between the soil layers, the new soil middle layer organic matter supply concentration under the action of the new soil middle layer organic matter concentration is acquired; obtaining the soil bottom layer organic matter demand of the corn field subarea based on the new soil bottom layer organic matter concentration and the new soil middle layer organic matter supply concentration; obtaining the corn stalk returning amount of the corn field subarea based on the soil bottom layer organic matter demand of the corn field subarea and the organic matter output rate of the corn stalk decomposition process.

[0012] Optionally, the corn stalk returning amount of the corn field subarea is obtained based on the corn stalk returning amount of the corn field subarea and the corn stalk decomposition rate under the action of the decomposing agent. obtaining the corn stalk returning amount of the corn field subarea based on the new soil bottom layer organic matter concentration and the new soil middle layer organic matter supply concentration; obtaining the corn stalk returning amount of the corn field subarea based on the new soil bottom layer organic matter concentration and the new soil middle layer organic matter supply concentration; obtaining the corn stalk returning amount of the corn field subarea based on the new soil bottom layer organic matter concentration and the new soil middle layer organic matter supply concentration;

[0013] Optionally, the corn stalk returning amount of the corn field subarea and the decomposing agent are configured based on the corn stalk returning amount of the corn field subarea and the decomposing agent amount of the corn field subarea, and the new soil bottom layer is set in the autumn. obtaining the corn stalk returning amount of the corn field subarea and the decomposing agent amount of the corn field subarea based on the corn stalk returning amount of the corn field subarea and the decomposing agent amount of the corn field subarea of all the corn field subareas; uniformly spraying the decomposing agent on the corn stalk returning amount to obtain treated corn stalk returning amount. mixing the soil of the soil surface of the corn field subarea and the treated corn stalk returning amount, and setting the mixture as the new soil bottom layer.

[0014] Optionally, the new soil middle layer and the new soil surface layer are constructed based on the new soil bottom layer. after the new soil bottom layer is obtained, the soil of the original soil bottom layer is set on the new soil bottom layer to form the new soil middle layer. after the new soil middle layer is obtained, the soil of the original soil middle layer is set on the new soil middle layer to form the new soil surface layer.

[0015] The beneficial effects of the present application include: 1. The rationality of the straw amount setting is improved. In the technical scheme of the present application, the decomposition time of the corn stalk is obtained, and the mutual influence of the organic matter between the soil layers after the corn stalk returning treatment is obtained. The corn stalk amount is adjusted based on the two parameters, and the rational adjustment of the corn stalk is realized.

[0016] 2. Full use of existing resources. In the technical solution of this application, straw is buried in the autumn and lasts from autumn to the following spring. The straw decomposes again during the freeze-thaw cycle in winter, which reduces the problems of incomplete straw decomposition and harmful gas generation that exist under conventional straw return to the field measures. At the same time, it utilizes the water, light and heat resources of the soil in Northeast China before freezing, and uses lime nitrogen to adjust the soil carbon-nitrogen ratio to promote straw decomposition.

[0017] 3. Extended decomposition time of straw. In the technical solution of this application, after the corn straw is returned to the field, it is first placed at the bottom layer and decomposes in the lowest environment. After one crop of corn is planted and harvested, the soil layer is adjusted, changing the bottom layer to the middle layer. At this time, the corn straw decomposes further. After another corn planting and harvest, the middle layer is transformed into the top layer. In Northeast China, this is equivalent to a decomposition time of 2 years for the corn straw, which significantly extends the decomposition time and allows the corn straw to provide more organic matter. Attached Figure Description

[0018] 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: Figure 1 A flowchart illustrating an efficient method for returning corn stalks to the field, as provided in this application embodiment; Figure 2 A schematic diagram of cornfield zoning for an efficient corn straw return method provided in this application embodiment; Figure 3 This application provides an embodiment of an efficient method for returning corn straw to the field, illustrating the changes in organic matter in different soil layers. Figure 4 This is a schematic diagram of soil stratification in an efficient corn straw return method provided in an embodiment of this application. Detailed Implementation

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application. In addition, in the embodiments of the present application, "first", "second", and the like are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence.

[0020] In the current corn field straw returning operation, the methods used include straw crushing returning technology, straw deep burying returning technology and the like. These technologies are often difficult to protect the soil itself, resulting in the loss of organic matter in the soil. At the same time, they require a high operating level, which increases the amount of manpower and material resources investment. In addition, it is difficult to ensure that the amount of corn straw put in is reasonable, and the corn straw decomposition time after being put in is relatively long, resulting in poor effect of corn straw returning operation. In order to solve the above problems, the present application discloses a corn straw efficient returning method, as shown in Figure 1 The corn straw efficient returning method flow chart disclosed by the embodiments of the present application is specific. A corn straw efficient returning method, the method comprises: S110, layering the soil of a large range of corn field along the vertical direction, and obtaining the organic matter concentration of each soil layer.

[0021] S120, obtaining the organic matter concentration value of the middle layer of the soil in the large range of corn field, so as to obtain the corn field partition of the large range of corn field.

[0022] S130, obtaining the organic matter transfer rule between the soil layers based on the historical value of the organic matter concentration of each soil layer in the corn field partition.

[0023] S140, obtaining the returning straw amount of the corn field partition based on the organic matter transfer rule between the soil layers.

[0024] S150, obtaining the decomposition agent putting amount of the corn field partition based on the returning straw amount of the corn field partition.

[0025] S160, configuring the returning straw and the decomposition agent based on the returning straw amount of the corn field partition and the decomposition agent putting amount of the corn field partition, and setting a new soil bottom layer in the autumn.

[0026] S170, constructing a new soil middle layer and a new soil surface layer based on the new soil bottom layer.

[0027] The purpose of all the above steps is to accurately determine the amount of corn straw input when the corn straw is returned to the field, and to set the straw to the bottom layer of soil, and after decomposition, to set it to the middle layer of soil. Based on this method, the decomposition time of the decomposed corn straw can be fully extended, and the effect of corn straw returning to the field is improved.

[0028] The specific content of all the above steps will be described in detail below. As described in step S110, the purpose of this step is to determine the amount of straw input in the corn straw returning to the field, and the specific judgment parameter is the organic matter concentration of the soil layer in the corn field. The concentration parameter can be used to determine the subsequent soil depth parameter and the organic matter concentration of the soil layer, and the parameter is used for the analysis process of the subsequent corn straw amount. Specifically: S111, obtain the soil environment of the planting area of the large-area corn field, and determine the thickness of the layered soil.

[0029] The purpose of this step is to determine the soil thickness that can perform corn straw returning to the field based on the maximum plowing depth that can be adjusted in the corn straw returning to the field in the corn field.

[0030] Among them, for the so-called soil environment, it can be determined according to the location of the area or the variety of corn planted and other information, such as the location close to the external water source. The soil moisture content of the area is usually higher, and the thickness of the soil is larger and is demarcated.

[0031] Among them, the thickness of the layered soil can also be determined according to the maximum plowing depth of the soil in previous years.

[0032] S112, determine the soil surface layer depth based on the soil bulk density distribution of the large-area corn field.

[0033] The purpose of this step is to determine the soil surface layer depth based on the soil bulk density distribution of the large-area corn field.

[0034] Among them, considering the maximum depth limit of the large horsepower tractor and hydraulic turnover plow during deep plowing operation, and the large volume of corn straw, the surface layer depth can be set larger in the high-efficiency returning to the field, for example, the surface layer depth is set to 40cm.

[0035] In some embodiments, the surface layer depth is also set according to the corn variety selection result of the next year and the root depth of the corn variety, but it also needs to ensure that the soil surface layer depth can support the input application of agricultural equipment.

[0036] S113, removing the soil surface layer depth from the thickness of the stratified soil to obtain a remaining soil layer thickness.

[0037] The purpose of this step is to adjust the relative position of the soil layer during the process of straw returning to the field in the technical solution of the present application. Overall, it is necessary to set other levels except the surface layer.

[0038] After determining the soil surface layer depth, the soil surface layer depth parameter is directly removed, and the remaining soil layer is the combined level of the middle soil layer and the bottom soil layer.

[0039] For the remaining soil layer thickness, the thickness of the entire stratified soil needs to be obtained, and in this case, the remaining soil layer thickness can be directly obtained.

[0040] S114, dividing the remaining soil layer thickness equally, and the soil layers corresponding to the divided soil layer thickness are the middle soil layer and the bottom soil layer from top to bottom.

[0041] The purpose of this step is to obtain the middle soil layer and bottom soil layer parameters.

[0042] The obtained middle and bottom soil layer mixing area is directly divided equally.

[0043] For the obtained middle soil layer and bottom soil layer, the soil surface layer depth parameter is removed, and then directly divided.

[0044] S115, obtaining the organic matter concentration of each soil layer in all sampling areas in a large-scale corn field.

[0045] The purpose of this step is that the organic matter concentration in different soil layers in the corn field is different after straw returning to the field or before the first straw returning to the field operation. The detection of the organic matter concentration in these soil layers can be used for corn field area division based on the detection result and analysis of the corn straw input amount.

[0046] For a large-scale corn field, random sampling is performed in the entire area, and the obtained sampling results are analyzed to obtain the detection result of the organic matter concentration of different soil layers.

[0047] In some embodiments, the average of the organic matter concentrations of the three soil layers can also be used to determine.

[0048] In some embodiments, the determination is directly made according to each unit that has been set in the large-scale corn field, such as a large number of set edge areas in the large-scale corn field, and all corn field units in the large-scale corn field are obtained according to the arrangement area of the edge area.

[0049] For the detection of the organic matter concentration, if the detection is based on the arrangement area of the corn field edge line, only one sampling point is arranged in the small area corn field area surrounded by each corn field edge line.

[0050] The beneficial effect of step S110 is that through the determination of the soil layering and the way of obtaining the organic matter concentration of each soil layer, the entire area can be identified and determined, and based on the analysis result, the soil environment in the corn field can be better determined.

[0051] As described in step S120, the purpose of this step is that for a large-scale corn field, the area is extremely large, which means that the large-scale corn field often contains multiple small-area corn fields, or different corn varieties are planted in different areas. After this situation occurs, the distribution of the organic matter concentration in the soil layer of the corresponding area will change significantly, so it is necessary to determine the corn field partition of the corn field. Specifically: S121, obtaining the soil middle layer organic matter concentration in the organic matter concentration of each soil layer, and determining the collection position of the soil middle layer organic matter concentration value.

[0052] The purpose of this step is to determine the collection position of the organic matter concentration value of the soil in the large-scale corn field according to the detection result of the organic matter concentration, and according to the result required, the large-scale corn field can be partitioned and determined.

[0053] Among them, the obtained organic matter concentration value of each soil layer is only the soil middle layer organic matter concentration value.

[0054] Among them, the reason why only the soil middle layer organic matter concentration value is determined is that in the technical solution of the present application, the soil middle layer will be adjusted to the soil surface layer when corn is planted the next year. Therefore, according to the concentration state of the soil middle layer organic matter concentration value, the corn field partition of the large-scale corn field can be determined.

[0055] Among them, for a large-scale corn field, it is usually operated in the form of a farm, which means that the corn field edge line arranged therein is not fixed, but can be adjusted in position. Therefore, in actual operation, the corn field partition can be further determined according to the collection position of the soil middle layer organic matter concentration value.

[0056] S122. All adjacent sampling locations whose corresponding soil organic matter concentration difference is not higher than a preset concentration difference are included in the same range interval, which is a cornfield partition of a large cornfield.

[0057] The purpose of this step is to determine the zoning of cornfields during the large-scale straw return to the field.

[0058] Among them, such as Figure 2 The diagram illustrates the zoning of a cornfield using a method for efficient corn straw return to the field, as provided in this embodiment. Based on the principle that adjacent sampling points have a soil organic matter concentration difference not exceeding a preset value, all such sampling points are grouped into the same range, thus creating cornfield zoning. Specifically, the entire cornfield is divided into zones C1 to C10 based on the detection results. Each cornfield zone contains multiple sampling points. Only when sampling points are adjacent and the organic matter concentration difference between them does not exceed a preset value can these sampling points be grouped into the same cornfield zone. Furthermore, the cornfield is divided based on the location of all sampling points. For example, in zone C4, there are 6 sampling points located above, to the left of, and on top of the C4 label in the main diagram. However, the organic matter concentration difference between the leftmost sampling point and two adjacent sampling points in zone C3 exceeds the preset organic matter concentration difference; therefore, these two sampling points belong to different cornfield zones.

[0059] The resulting cornfield zoning is often irregular in shape. To facilitate subsequent corn stalk return to the field, the edges of the zoning area can be supplemented to obtain a regular shape.

[0060] S123. The cornfield partition of the large-scale cornfield contains no less than one collection location.

[0061] The purpose of this step is to ensure the rationality of the delineation of cornfield zones during the determination of large-scale cornfield zones.

[0062] For the analysis of the cornfield obtained, it is necessary to ensure that it includes at least one sampling location.

[0063] If there is only one sampling location, the method required for dividing the cornfield into zones is to divide the area based on the existing boundary lines of a large cornfield. This divided area is then called the cornfield zone.

[0064] The beneficial effect of step S120 is that a large range of corn fields can be divided into multiple corn field partitions, so that the input amount of corn straw in each corn field partition can be determined according to the corn field partition, so as to better improve the calculation precision of the input amount of corn straw.

[0065] As described in step S130, the purpose of this step is that in the corn field area, the organic matter concentration in different layers of soil is mutually transmitted, which will cause the change of the organic matter concentration in different soil layers, and thus the organic matter transmission rule needs to be determined to determine the subsequent organic matter concentration data. Specifically: S131, obtain the organic matter concentration historical data of each soil layer in the corn field partition and perform preprocessing to obtain the preprocessed organic matter concentration data of each soil layer.

[0066] The purpose of this step is to ensure that the obtained organic matter transmission rule has high precision, so that the historical data recorded therein needs to be preprocessed before the relevant parameters are obtained, and then the preprocessed data is used to obtain the result.

[0067] Among them, for the organic matter concentration data of each soil layer in the corn field partition, the recorded historical data needs to be obtained, and the obtained historical data needs to be processed.

[0068] Among them, all the preprocessed organic matter concentration data obtained need to be processed in addition to excluding interference.

[0069] S132, based on the preprocessed organic matter concentration data of each soil layer, obtain the organic matter concentration curve of each soil layer.

[0070] The purpose of this step is that all the preprocessed organic matter concentration data needs to be obtained according to the data result, and the organic matter concentration curve of the soil layer is obtained, and then the organic matter transmission rule can be obtained based on the curve.

[0071] Among them, the preprocessed organic matter concentration data is directly expressed as curve information according to the law of collection time.

[0072] Among them, for the obtained organic matter concentration curve of each soil layer, the obtained concentration curve needs to be labeled with corresponding soil layer information.

[0073] S133, based on the organic matter concentration curve of each soil layer, obtain the organic matter transmission rule between the soil layers.

[0074] The purpose of this step is to ultimately obtain the organic matter transfer law data between the soil layers after obtaining the organic matter concentration curve.

[0075] Wherein, the organic matter concentration curve of each soil layer is obtained.

[0076] Wherein, the organic matter transfer law between the adjacent soil layers is obtained according to the obtained organic matter concentration curve, that is, the organic matter transfer law between the top soil layer and the middle soil layer, and the middle soil layer and the bottom soil layer is obtained respectively.

[0077] Wherein, considering that the overall technical concept of the present application also involves position adjustment between soil layers, in the specific processing, the expected transfer law between the top soil layer and the bottom soil layer in the current time period, and the current middle soil layer and the bottom soil layer can also be considered, because in the next year, the current top soil layer will become the bottom soil layer, the current bottom soil layer will become the middle soil layer, and the current middle soil layer will also become the top soil layer.

[0078] The beneficial effect of step S130 is that by obtaining the organic matter transfer law between the soil layers, the obtained results can be used to determine the accurate amount of corn straw in each corn field partition to avoid waste and insufficient total amount of corn straw.

[0079] However, the key technical solution in the technical solution of step S130 in the above is not described, so the contents of the key steps S131 and S133 need to be described in detail. The specific content of step S131 includes: S1311, obtaining the corn variety and corn growth cycle in the corn field partition to obtain the organic matter consumption of corn.

[0080] The purpose of this step is that the organic matter concentration in the corn field area decreases, which means that the organic matter content decreases, and the cause of this phenomenon is obviously the consumption of the corn growth process, and the consumption of different corn varieties and different growth cycles of corn is different, so the corn variety information needs to be obtained to determine the organic matter consumption.

[0081] Wherein, the corn variety information in the corn field partition is obtained, and the organic matter consumption of corn is obtained based on the obtained corn variety information.

[0082] Wherein, the corresponding relationship between the corn variety, the corn growth cycle, and the organic matter consumption of corn can be established by following the test method, so that the organic matter consumption of the corn variety for subsequent corn planting can be predicted.

[0083] In which, the organic matter consumption of corn varieties in different growth periods can also be determined directly according to the test results of corn varieties.

[0084] S1312, obtain the fertilization time and fertilization amount of the corn field partition to obtain the exogenous organic matter growth amount.

[0085] The purpose of this step is to add inorganic fertilizer and organic fertilizer for large-scale corn fields, especially for large-scale corn fields operated in a farm mode. Inorganic fertilizer often increases the rate at which corn consumes organic matter, and the addition of organic fertilizer significantly increases the organic matter of the corn field, that is, the fertilizer will all lead to the growth of organic matter, and this factor is not stable, so this information needs to be used as an interference amount.

[0086] In which, all the fertilization times and types of fertilizers supplemented in the management of the corn field partition are recorded.

[0087] In which, the amount of fertilizer in the corn field between the fertilization times is obtained, and the exogenous organic matter growth amount is determined according to the parameters of the amount of fertilizer.

[0088] In which, the reduction of organic matter in the soil surface layer also needs to be considered for the exogenous organic matter growth amount, because the addition of inorganic fertilizer will cause the organic matter content in the soil surface layer to decrease.

[0089] In which, the organic matter content in the soil surface layer will increase after the addition of organic fertilizer, so the organic matter growth amount of the soil surface layer needs to be obtained.

[0090] In which, the so-called exogenous organic matter growth amount refers to the change in the organic matter of the soil surface layer after the addition of organic fertilizer and / or inorganic fertilizer after the fertilization operation.

[0091] S1313, combine the exogenous organic matter growth amount and the organic matter consumption amount of corn with the soil surface layer organic matter concentration historical data to obtain the pretreated soil surface layer organic matter concentration data.

[0092] The purpose of this step is to combine the obtained value with the soil surface layer organic matter concentration historical data after the exogenous organic matter growth amount of the soil surface layer is determined, and the result obtained is the pretreatment result of the soil surface layer.

[0093] In which, for the obtained soil surface layer organic matter concentration historical data, the corresponding relationship between all the organic matter concentration data and time in all the obtained historical data is obtained.

[0094] In which, for the obtained time information, the topdressing information is also obtained synchronously according to the time information, and the exogenous organic matter growth amount information is also obtained.

[0095] Wherein, according to the obtained time information, the organic matter consumption value of corn also needs to be obtained according to the time information, so that the organic matter parameter after the corn is planted can be obtained according to the consumption value.

[0096] Wherein, after obtaining the exogenous organic matter growth, the predicted value consumption value and the concentration historical data, based on the three data, the organic matter concentration data of the soil surface layer if the corn field partition is not planted with corn can be obtained, more specifically, the soil surface layer organic matter concentration historical data and the organic matter consumption data of corn are added and subtracted by the exogenous organic matter growth.

[0097] S1314, obtain the composition curve of the organic matter concentration historical data of the middle layer of soil in the corn field partition, and obtain the value change similarity in the organic matter concentration historical data curve of the middle layer of soil and the surface layer of soil.

[0098] The purpose of this step is that after the change of the organic matter concentration of the soil surface layer occurs or fluctuates, the change of the organic matter concentration will not necessarily affect the middle layer of soil, that is, not all the change parameters of the organic matter concentration of the soil surface layer, but once the predicted value concentration historical data of the two soil layers is similar, it means that the current organic matter of the two soil layers exists mutual penetration effect.

[0099] Wherein, the organic matter concentration historical data curve of the middle layer of soil and the surface layer of soil is directly obtained.

[0100] Wherein, it should be noted that for the similarity judgment process, the data used for comparison and judgment is not the data after preprocessing, but all the obtained historical data of organic matter concentration, because only when the historical data curve is similar, it can be considered that there is mutual transmission effect of organic matter between the two soil layers in this time period.

[0101] Wherein, for the value change similarity, firstly, the composition curve of the organic matter concentration historical data of the surface layer of soil and the middle layer of soil is obtained, and then according to the composition curve, it is determined whether the curve of the middle layer of soil fluctuates in a period of time after the curve of the surface layer of soil fluctuates. The subsequent period of time can be set by the technical personnel, and when it is found that the curve of the middle layer of soil also fluctuates, it is considered that the value change similarity is high.

[0102] Wherein, when the curve of the middle layer of soil fluctuates in the subsequent period of time, it is also necessary to determine the fluctuation amplitude, only when the fluctuation amplitude is not lower than the preset fluctuation amplitude, it can be considered that the data fluctuation on the curve of the middle layer of soil can be applied to the judgment process of the value change similarity.

[0103] In some embodiments, the data change rate at the time point of data fluctuation of the data of the soil middle layer and the soil surface layer in the corresponding time period in the constituting curve of the organic matter concentration historical data of the soil surface layer and the soil middle layer can be directly judged, and when the change rates are similar, it is considered that the numerical value change is high in similarity.

[0104] S1315, obtaining the time period in which the organic matter concentration numerical value of the soil middle layer changes when the numerical value change similarity is not lower than the preset similarity.

[0105] The purpose of this step is to find that the numerical value change similarity is not lower than the preset similarity, and it is considered that the organic matter concentration numerical value of the soil middle layer is affected by the organic matter concentration of the soil surface layer, but in the process of corn straw returning and corn cultivation, it is not yet time to fertilize, so it is necessary to determine the time period in which the organic matter concentration numerical value changes in the current parameter judgment, and it is determined that the data is caused by the change of the organic matter concentration of the soil surface layer.

[0106] Among them, the determination of the preset similarity can be set by the technician, or determined based on the mean value of the historical change similarity. Specifically, the obtained mean value is the preset similarity.

[0107] Among them, when the time change similarity is not lower than the preset similarity, it is considered that the change of the organic matter concentration numerical value in the corresponding time period is caused by the exogenous organic matter growth of the soil surface layer.

[0108] Among them, for the data change caused by the exogenous organic matter growth of the soil surface layer to the soil middle layer, the change is caused by excessive exogenous organic matter input, not by spontaneous organic matter transfer between soil layers, so for the soil middle layer, the change of the organic matter concentration numerical value of the soil middle layer caused by the exogenous organic matter growth of the soil surface layer needs to be removed.

[0109] S1316, removing the data fluctuation on the organic matter concentration historical data curve of the soil middle layer to obtain the pretreated organic matter concentration data of the soil middle layer.

[0110] The purpose of this step is that the data fluctuation existing in the organic matter concentration history of the soil middle layer is often caused by exogenous organic matter growth, so in the subsequent processing, the subsequent processing caused by the exogenous organic matter growth value needs to be processed to obtain the pretreated data.

[0111] Among them, for the organic matter concentration historical data curve of the soil middle layer, when it is found that there is data fluctuation, the fluctuation is removed.

[0112] Wherein, after removing the data fluctuation on the historical data curve of the organic matter concentration in the middle layer of the soil, the obtained result is the pretreated organic matter concentration data in the middle layer of the soil.

[0113] Wherein, for the data processing of the surface layer of the soil, in addition to being able to remove the exogenous organic matter growth, the corn organic matter consumption needs to be combined synchronously and removed from the organic matter concentration of each measurement node of the surface layer of the soil.

[0114] Wherein, the further decomposition state of the corn straw in the middle layer of the soil after decomposition in the bottom layer region is determined, so as to determine the organic matter concentration change state existing therein.

[0115] Wherein, for different soil layers, especially after the corn straw is returned to the field, the organic matter content of different soil layers is different, such as Figure 3 As shown in the organic matter change diagram of different soil layers in the corn straw efficient returning to the field method provided by the embodiment of the application, it can be seen that the fluctuation of the surface layer is more significant, the change of the surface layer is the most obvious, the sudden increase region is the change caused by the increase of the fertilizer, and for the middle layer of the soil, the fluctuation is relatively insignificant, but it also appears, which often means that the fertilizer infiltrates into the middle layer of the soil, and the bottom layer of the soil is almost free of fluctuation, which means that the decomposition process is relatively stable.

[0116] Wherein, for the organic matter transfer state between different soil layers, the organic matter concentration data of the bottom layer of the soil is basically not affected by the exogenous organic matter growth of the surface layer of the soil, so in the specific processing, the correlation between the data fluctuation of the bottom layer of the soil and the data fluctuation of the surface layer of the soil does not need to be analyzed.

[0117] For step S133, the purpose is to directly obtain the organic matter transfer law between the soil layers, and specifically: S1331, the organic matter transfer law between the soil layers includes the organic matter transfer law between the bottom layer of the soil and the middle layer of the soil and the organic matter transfer law between the middle layer of the soil and the surface layer of the soil.

[0118] The purpose of this step is to determine the organic matter transfer law between the bottom layer of the soil and the middle layer of the soil and the organic matter transfer law between the middle layer of the soil and the surface layer of the soil in the determination of the organic matter transfer law between the soil layers, so as to determine the specific analysis object.

[0119] Wherein, for the determination of the organic matter transfer law between the bottom layer of the soil and the middle layer of the soil, the pretreated data between the two soil layers needs to be used, and the curve correspondence relationship between the two is established to determine the mutual organic matter transfer data between the two.

[0120] Wherein, for the transfer rule of organic matter in the middle layer and surface layer of soil, the pretreated data between the two layers needs to be used, and the curve correspondence between the two layers is established to determine the mutual transfer data of organic matter between the two layers.

[0121] S1332, based on the pretreated organic matter concentration curve of each soil layer, an actual organic matter concentration equation of each soil layer is obtained.

[0122] The purpose of this step is to analyze the organic matter concentration curve in the process of analyzing the transfer form of organic matter between soil layers, and then the specific form of change of organic matter concentration can be determined based on the organic matter concentration curve.

[0123] Wherein, in the process of determining the organic matter concentration equation, the obtained results need to be fitted according to the pretreated organic matter concentration curve of each soil layer.

[0124] Wherein, as shown in Figure 3 , for the organic matter concentration curve of each soil layer, a fitting equation needs to be established for all the information in it.

[0125] Wherein, for the curve of the surface layer of soil, it can be found that the curve presents a situation similar to periodic fluctuation, but if the spontaneous organic matter transfer scheme between soil layers is considered, the exogenous organic matter growth needs to be removed to obtain its own numerical change.

[0126] Wherein, the organic matter of the surface layer of soil has two destinations, one is the consumption of the growth process of corn, and the other is the penetration of organic matter to the middle layer of soil.

[0127] Wherein, for the organic matter concentration curve of the middle layer of soil, the data fluctuation in the curve has been removed, so the fitting curve can be directly obtained based on the curve after pretreatment.

[0128] Wherein, in the process of obtaining the fitting curve, the fitting curves of different soil layers are analyzed, for example, for the surface layer of soil, the fitting equation is: ; Wherein, C st represents the organic matter concentration of the surface layer of soil at time t without topdressing; C s1 represents the organic matter concentration of the surface layer of soil at the initial time without topdressing; f t ​represents the rate of organic matter depletion in different time periods during corn planting, and the value is related to the corn variety, and can be obtained based on long-term planting data or laboratory or field test; t0 and t1 represent different time periods during the growth of corn, respectively; V represents the soil surface layer volume of the corn field. In addition, when corn is not planted, it is obvious that f ( t ) is 0.

[0129] For the middle layer of soil, the fitting equation is: ; wherein, C mt represents the organic matter concentration of the middle layer of soil at time t ; C m0 represents the initial time organic matter concentration of the middle layer of soil; C m1 represents the final time organic matter concentration of the middle layer of soil; a 1 and a 2 represent the parameters of the organic matter concentration change equation of the middle layer of soil. Further, for the interval of t , the entire time period is from January to mid-December, and 4.5 represents mid-April and 12.5 represents mid-December.

[0130] For the bottom layer of soil, the fitting equation is: ; wherein, C bt represents the organic matter concentration of the bottom layer of soil at time t ; A 1 and A 2 represent the parameters of the organic matter concentration equation of the bottom layer of soil; C b0 represents the initial time organic matter concentration of the bottom layer of soil.

[0131] wherein, for the organic matter concentration fitting equation of each soil layer above, the data is obtained based on actual measurement data, except that for the soil surface layer, the change in organic matter concentration caused by topdressing or supplemental fertilization is removed, and the equation is constructed directly based on the growth cycle of corn, and for the middle layer and bottom layer of soil, the equation is established directly based on the actual measurement data.

[0132] S1333, obtain the change value of the organic matter concentration generated by the corn stalk decomposition process of each soil layer, and obtain the theoretical organic matter concentration equation of each soil layer.

[0133] The purpose of this step is that it is difficult to directly obtain the organic matter transfer law between different soil layers based on the difference in organic matter concentration between different soil layers, so other methods are used to process it.

[0134] Among them, for the organic matter transfer law between each soil layer, from its final impact, it is the deviation between the measured data and the theoretical data of the organic matter concentration in different soil layers.

[0135] Among them, for the actual organic matter concentration equation of each soil layer, it is further necessary to obtain the theoretical organic matter concentration equation.

[0136] Among them, for the theoretical organic matter concentration equation, it is necessary to obtain the change value of the organic matter concentration of each soil layer in the corn stalk decomposition process, so as to determine the theoretical organic matter concentration of each soil layer based on the value.

[0137] Among them, after determining the theoretical organic matter concentration of each soil layer, it is necessary to obtain the fitting equation based on the obtained value, which is the theoretical organic matter concentration equation of each soil layer.

[0138] Among them, considering the particularity of the surface layer of the soil, the organic matter is more important for the transfer of organic matter to the middle layer of the soil, which does not involve the provision of organic matter by the corn stalk decomposition process, and the main source of organic matter is the topdressing, so it is not necessary to consider the theoretical organic matter concentration equation of the surface layer of the soil.

[0139] Among them, the middle layer of the soil and the bottom layer of the soil obviously need to obtain the theoretical organic matter concentration equation, and the specific obtaining process can be obtained based on laboratory simulation and experimental field simulation.

[0140] S1334, based on the actual organic matter concentration equation and the theoretical organic matter concentration equation of each soil layer, obtain the organic matter transfer law between the soil layers.

[0141] The purpose of this step is to obtain the organic matter transfer law based on the equation after obtaining the theoretical and actual concentration equations of the organic matter of each soil layer.

[0142] Among them, for the organic matter transfer relationship between the middle layer of the soil and the bottom layer of the soil, the deviation value between the theoretical and actual organic matter concentration equations of the bottom layer of the soil can be considered as the organic matter transferred downward by the middle layer of the soil. Then, the difference between the theoretical and actual organic matter concentration of the bottom layer of the soil is obtained, that is, the organic matter transfer law between the middle layer of the soil and the bottom layer of the soil. The organic matter transfer equation is: ; wherein, ΔC bt represents the organic matter transfer result between the soil surface layer and the soil middle layer; C bt represents the fitting equation of the organic matter concentration of the soil middle layer, that is, the actual organic matter concentration equation of the soil middle layer; C bt represents the theoretical organic matter concentration equation of the soil middle layer, which can be obtained based on the experimental data of the laboratory or the experimental field, and is not limited herein.

[0143] wherein, for the organic matter transfer law between the soil surface layer and the soil middle layer, considering that the organic matter is affected by gravity, for the change of the organic matter concentration, two cases can occur, one is rising, which means that the total amount of the organic matter provided by the soil surface layer to the soil middle layer is higher than the total amount of the organic matter transferred from the middle layer to the bottom layer, and the other is falling, which means that the total amount of the organic matter transferred from the middle layer to the bottom layer is higher than the total amount of the organic matter transferred from the surface layer to the middle layer. However, which case is, the deviation value of the theoretical and actual organic matter concentration equations is derived from the transfer of the surface layer to it and the transfer of it to the bottom layer, so in order to obtain the organic matter transfer law of the soil surface layer and the soil middle layer, the following equation can be used to determine: ; wherein, ΔC mt represents the organic matter transfer result from the soil surface layer to the soil middle layer, C mt represents the fitting equation of the organic matter concentration of the soil middle layer, that is, the actual organic matter concentration equation of the soil middle layer; C mt represents the theoretical organic matter concentration equation of the soil middle layer.

[0144] As described in step S140, the purpose of this step is to determine the amount of straw returned to the field after obtaining the organic matter transfer law, so as to ensure that the amount of straw put in meets the amount required for corn growth and soil improvement, and also to avoid excessive input of straw returned to the field, which leads to resource waste. Specifically: S141, after the corn is harvested, the measured organic matter concentration value of the soil bottom layer of the corn field partition is obtained, and the measured organic matter concentration value of the soil bottom layer is adjusted to a new soil middle layer organic matter concentration.

[0145] The purpose of this step is to change the relative position of the soil layer in each cycle of the technical solution of the application, that is, in the next straw returning cycle, the soil surface layer is changed to the soil bottom layer, and the straw is buried in the soil bottom layer, and the current soil bottom layer will be changed to the soil middle layer in the next stage. In order to better determine the amount of straw to be arranged, it is necessary to determine the organic matter concentration of the current soil bottom layer.

[0146] Among them, after the corn is harvested, the organic matter concentration of the current soil bottom layer is directly measured, and the value is directly set as the new soil middle layer organic matter concentration.

[0147] Among them, the meaning of the new soil middle layer organic matter concentration is the soil middle layer in the next straw returning stage.

[0148] S142, obtaining the measured organic matter concentration value of the soil surface layer of the corn field partition, and adjusting the measured organic matter concentration value of the soil surface layer to the new soil bottom layer organic matter concentration.

[0149] The purpose of this step is that after the corn is harvested, it is obviously necessary to adjust the position of the soil layer, and the soil surface layer will become the new soil bottom layer. Therefore, in the specific processing, it is necessary to measure the organic matter concentration value of the soil surface layer, which will be used for subsequent deviation amount calculation.

[0150] Among them, after the corn is harvested, the organic matter concentration value of the soil surface layer is directly measured, and the measured organic matter concentration value is obtained.

[0151] Among them, the measured organic matter concentration value of the soil surface layer is directly determined as the new soil bottom layer organic matter concentration.

[0152] S143, based on the organic matter transfer rule between the soil layers, obtaining the new soil middle layer organic matter supply concentration under the action of the new soil middle layer organic matter concentration.

[0153] The purpose of this step is that according to the organic matter transfer rule between the soil layers, the soil middle layer organic matter supply concentration existing between the new soil layers can be obtained.

[0154] Among them, the concept of new soil middle layer organic matter attack concentration is that in the new corn straw returning cycle, the change amount of the organic matter concentration of the soil bottom layer caused by the transfer of the organic matter from the soil middle layer to the soil bottom layer.

[0155] S144, based on the new soil bottom layer organic matter concentration and the new soil middle layer organic matter supply concentration, obtaining the soil bottom layer organic matter demand amount of the corn field partition.

[0156] The purpose of this step is to determine the amount of corn stalks to be inputted according to the demand of organic matter in the soil surface layer in the corn cultivation.

[0157] In which, the demand of organic matter concentration in the soil surface layer is determined according to the corn planting plan in the future time or the corn growth requirement.

[0158] In which, for the northeast region, corn is one-year crop, and then the demand of organic matter concentration in the soil surface layer in the future second year is determined, and theoretically, the organic matter concentration in the soil middle layer in the future first year is obtained, which is based on the organic matter transfer law.

[0159] In which, after the organic matter concentration in the soil middle layer in the future first year is obtained, the organic matter concentration in the soil bottom layer in the time period is analyzed, and the organic matter concentration transferred from the soil middle layer to the bottom layer in the future time is determined based on the organic matter transfer law.

[0160] In which, after all the transferred organic matter concentrations are obtained, the organic matter concentration in the soil bottom layer in the future time period is obtained, and considering that the parameter is obtained based on the demand of organic matter concentration in the soil surface layer, the obtained organic matter concentration in the soil bottom layer is the demand of organic matter in the soil bottom layer of the corn field partition.

[0161] S145, based on the demand of organic matter in the soil bottom layer of the corn field partition and the organic matter output rate of the corn stalk decomposition process, the amount of returned corn stalks in the corn field partition is obtained.

[0162] The purpose of this step is to obtain the amount of returned corn stalks in the corn field partition after obtaining the demand of organic matter in the soil bottom layer.

[0163] In which, the difference between the demand of organic matter in the soil bottom layer and the current organic matter concentration in the soil surface layer is obtained, and the difference is the organic matter concentration that can be provided after the inputted corn stalks are decomposed.

[0164] In which, the organic matter output rate of the corn stalk decomposition process is obtained, and then the ratio of the provided organic matter concentration and the organic matter output rate is obtained, and the obtained result is the amount of returned corn stalks in the corn field partition.

[0165] The beneficial effect of step S140 is that the amount of returned corn stalks inputted into different corn field partitions in the corn field is obtained through the demand and the organic matter transfer law between the soil layers, so as to ensure the rationality of the calculation of the input amount, and the problem that the inputted amount of stalks is insufficient to support the purpose of improving the soil and / or increasing the yield can be completely avoided.

[0166] As step S150, the purpose of this step is that the climate in the northeast is cold, in order to ensure the decomposition rate of corn straw, it is also necessary to put in the straw to put in the accelerator, and in order to avoid the problem of excessive soil toxin or insufficient decomposition rate caused by excessive or insufficient accelerator input, the input amount is reasonably set. Specifically: S151, obtain the straw decomposition efficiency of different accelerators, and determine the type of accelerator.

[0167] S152, based on the type of accelerator, obtain the decomposition rate of corn straw under the action of the accelerator.

[0168] S153, based on the decomposition rate of corn straw and the amount of straw returned to the field in the corn field partition, obtain the amount of accelerator put in the corn field partition.

[0169] Among them, for step S151, the performance parameters of the accelerator that can be selected can be determined and selected. The stability of the accelerator, the toxicity of the decomposition product, the inhibition of the growth of corn and the like should be considered in the selection process.

[0170] For step S152, after the type and brand of the accelerator are selected, the decomposition rate needs to be obtained. In the specific processing, the decomposition rate can be determined based on laboratory simulation, test field simulation and the like.

[0171] For step S153, it is necessary to ensure that the accelerator is uniformly sprayed on the corn straw, so in the determination process of the amount of accelerator, the amount of accelerator is obtained according to the amount of straw returned to the field.

[0172] As step S160, the purpose of this step is to determine the amount of straw and the amount of accelerator after the straw and the accelerator are put into the field. Specifically: S161, based on the amount of straw returned to the field in the corn field partition and the amount of accelerator put in the corn field partition obtained for all corn field partitions, configure the straw and the accelerator for all corn field partitions.

[0173] S162, uniformly spray the accelerator on the straw returned to the field to obtain the treated straw returned to the field.

[0174] S163, when the corn field is in the stage in autumn, mix the soil on the surface of the soil in the corn field partition with the treated straw returned to the field, and set it as the new soil bottom.

[0175] After the amount of corn straw and accelerator is determined, the accelerator is uniformly sprayed on the corn straw to achieve the pretreatment of the corn straw.

[0176] Wherein, the corn stalks after pre-treatment and the current soil surface layer of soil are uniformly mixed, and after mixing, are buried in the soil bottom layer area.

[0177] Wherein, during the corn returning to field process, the mixed treated returning to field stalks are buried in the soil bottom layer area when the corn field is in the stage in autumn, thereby forming a new soil bottom layer.

[0178] As step S170, the purpose of this step is to make corresponding adjustments to other soil layers. Specifically: S171, after obtaining the new soil bottom layer, the soil of the original soil bottom layer is arranged on the new soil bottom layer to form a new soil middle layer.

[0179] S172, after obtaining the new soil middle layer, the soil of the original soil middle layer is arranged on the new soil middle layer to form a new soil surface layer.

[0180] Wherein, after determining the new soil bottom layer, other soil layers are also adjusted based on the layer. As Figure 4 As shown in the soil layering schematic diagram in the corn stalk efficient returning to field method provided by the embodiment of the application, the outer contour line is a vertical cross-sectional view of the soil, and the dashed arrow part represents the position transfer direction between the soil layers. Taking the northeast region as an example, the corn planting time is mostly in the early April every year, and plowing is needed before planting. At this time, the soil surface layer is plowed to be treated, and in October, the corn is harvested, and the soil surface layer is transferred to the position of the soil bottom layer, thereby being changed into the soil bottom layer. The original soil bottom layer is exchanged to the position of the soil middle layer, and the original soil bottom layer is changed into the new soil middle layer. The original soil middle layer is transferred to the position of the soil surface layer and becomes the new soil surface layer. Based on the method, the corn stalk decomposition time can be sufficiently prolonged to achieve the beneficial effect of improving the decomposition degree.

[0181] Wherein, for steps S160-S170, corresponding devices and technologies have been developed to support the technical solutions of steps S160-S170 of the application, for example, the soil layer replacement plowing machine can be provided with a replacement layer to support the operation of three soil layers.

[0182] Wherein, it should be noted that the analysis of all the above steps is based on organic matter, but in fact, other soil nutrients can also be determined, and the technical solutions can be implemented for all types of nutrients.

[0183] For all the above steps, through years of technical verification, it is found that the technical mode can increase the yield by 10.8% on average compared with the traditional mode, increase the nitrogen utilization rate by 8.5%, and increase the average income per hectare by 1315 yuan. After 3 years of technology implementation, the plough layer thickness increases to 35 cm, the soil bulk density of 0-40 cm soil layer decreases by 8.8%, the proportion of large aggregates increases by 10.4 percentage points, and the organic matter content increases by 14.8%.

[0184] The beneficial effects of the present application include: 1. The setting rationality of the straw input amount is improved. In the technical scheme of the present application, the decomposition time of corn straw is obtained, and the mutual influence of organic matter between soil layers after the straw is returned to the field is obtained. Based on the two parameters, the input amount of corn straw is adjusted to realize the reasonable adjustment of corn straw.

[0185] 2. The existing resources are fully utilized. In the technical scheme of the present application, the straw is filled in the autumn season, and the duration is from autumn to the next spring. The straw is decomposed again in the process of freezing and thawing in winter, which reduces the problems of straw floating and harmful gas generation existing in the conventional straw returning to the field measure, and utilizes the water, light and heat resources before soil freezing in the northeast region, and adjusts the soil carbon-nitrogen ratio by using lime nitrogen to promote the decomposition of straw.

[0186] 3. The decomposition time of straw is prolonged. In the technical scheme of the present application, after the corn straw is returned to the field, the straw is first arranged at the bottom layer and decomposed in the environment of the bottom layer, and after the corn is planted and harvested, the position of the soil layer is adjusted, so that the bottom layer of the soil changes to the middle layer of the soil. At this time, the corn straw is further decomposed, and after the corn is planted and harvested again, the middle layer of the soil changes to the surface layer. In the northeast region, at this time, the decomposition time of corn straw is 2 years, which fully prolongs the decomposition time and allows the corn straw to provide more organic matter.

[0187] Those skilled in the art can understand that all or part of the steps of the above method embodiments can be completed by computer program instruction related hardware. The aforementioned computer program can be stored in a non-volatile storage medium. When the computer program is executed, the steps of the above method embodiments are executed. Alternatively, when the above integrated units of the present application are realized in the form of software function modules and sold or used as independent products, they can also be stored in a non-volatile storage medium. Based on this understanding, the technical solutions of the embodiments of the present application can be embodied in the form of software products, which are stored in a non-volatile storage medium and include a plurality of instructions for causing an electronic device (which can be a personal computer, a server, a network device, etc.) to execute all or part of the methods described in the embodiments of the present application.

[0188] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A method for efficient corn stalks field returning, characterized in that, The method comprises: stratifying the soil of the large-scale corn field in a vertical direction and obtaining the organic matter concentration of each soil layer; obtaining the soil middle layer organic matter concentration value in the large-scale corn field to obtain the corn field partition of the large-scale corn field; obtaining the organic matter transfer rule between soil layers based on the historical value of the organic matter concentration of each soil layer in the corn field partition; obtaining the returned straw amount of the corn field partition based on the organic matter transfer rule between the soil layers; obtaining the put-in amount of the rotting agent of the corn field partition based on the returned straw amount of the corn field partition; configuring the returned straw and the rotting agent based on the returned straw amount of the corn field partition and the put-in amount of the rotting agent of the corn field partition, and setting a new soil bottom layer in the autumn; based on the new soil bottom layer, a new soil middle layer and a new soil surface layer are constructed.

2. The method according to claim 1, wherein, The stratifying the soil of the large-scale corn field in a vertical direction and obtaining the organic matter concentration of each soil layer comprises: obtaining the soil environment of the planting area of the large-scale corn field and determining the stratifiable soil thickness; determining the soil surface layer depth based on the soil bulk density distribution of the large-scale corn field; remove the soil surface layer depth from the stratifiable soil thickness to obtain the remaining soil layer thickness; divide the remaining soil layer thickness equally, and the soil layers corresponding to the divided soil layer thickness are the soil middle layer and the soil bottom layer from top to bottom; obtaining the organic matter concentration of each soil layer in all sampling areas in the large-scale corn field.

3. The method according to claim 1, wherein, The obtaining the soil middle layer organic matter concentration value in the large-scale corn field to obtain the corn field partition of the large-scale corn field comprises: obtaining the soil middle layer organic matter concentration in the organic matter concentration of each soil layer and determining the collection position of the soil middle layer organic matter concentration value; all adjacent collection positions corresponding to the soil middle layer organic matter concentration value difference not higher than the preset concentration difference are included in the same range interval, and the range interval is the corn field partition of the large-scale corn field; The corn field partition of the large-scale corn field contains no less than 1 collection position.

4. The method according to claim 1, wherein, The obtaining the organic matter transfer rule between soil layers based on the historical value of the organic matter concentration of each soil layer in the corn field partition comprises: obtaining the historical data of the organic matter concentration of each soil layer in the corn field partition and preprocessing to obtain the preprocessed organic matter concentration data of each soil layer; obtaining the organic matter concentration curve of each soil layer based on the preprocessed organic matter concentration data of each soil layer; obtaining the organic matter transfer rule between soil layers based on the organic matter concentration curve of each soil layer.

5. The method according to claim 4, wherein, The obtaining the historical data of the organic matter concentration of each soil layer in the corn field partition and preprocessing to obtain the preprocessed organic matter concentration data of each soil layer comprises: obtaining the corn variety and corn growth cycle planted in the corn field partition to obtain the organic matter consumption amount of corn; obtaining the fertilizing time and amount of the corn field partition to obtain the exogenous organic matter growth amount; combining the exogenous organic matter growth amount, the organic matter consumption amount value of corn and the historical data of the soil surface layer organic matter concentration to obtain the preprocessed organic matter concentration data of the soil surface layer; Obtaining the historical data curve of the organic matter concentration of the middle layer of the soil in the corn field partition, and obtaining the similarity of the numerical change in the historical data curve of the organic matter concentration of the middle layer of the soil and the surface layer of the soil; When the numerical change similarity is not less than a preset similarity, obtaining the time period when the organic matter concentration of the middle layer of the soil changes; Removing the data fluctuation on the historical data curve of the organic matter concentration of the middle layer of the soil to obtain the preprocessed organic matter concentration data of the middle layer of the soil.

6. The method according to claim 4, wherein, Based on the organic matter concentration curve of each soil layer, the organic matter transfer rule between the soil layers is obtained, including: The organic matter transfer rule between the soil layers includes the organic matter transfer rule between the bottom layer of the soil and the middle layer of the soil, and the organic matter transfer rule between the middle layer of the soil and the surface layer of the soil; Based on the preprocessed organic matter concentration curve of each soil layer, the actual organic matter concentration equation of each soil layer is obtained; Obtaining the change value of the organic matter concentration generated by the corn straw decomposition process of each soil layer, and obtaining the theoretical organic matter concentration equation of each soil layer; Based on the actual organic matter concentration equation and the theoretical organic matter concentration equation of each soil layer, the organic matter transfer rule between the soil layers is obtained.

7. The method according to claim 1, wherein the corn stalks are high- efficiency returned to the field by the method, characterized in that, Based on the organic matter transfer rule between the soil layers, the amount of straw returned to the field in the corn field partition is obtained, including: After the corn is harvested, the measured organic matter concentration value of the bottom layer of the soil in the corn field partition is obtained, and the measured organic matter concentration value of the bottom layer of the soil is adjusted to a new organic matter concentration of the middle layer of the soil; Obtaining the measured organic matter concentration value of the surface layer of the soil in the corn field partition, and adjusting the measured organic matter concentration value of the surface layer of the soil to a new organic matter concentration of the bottom layer of the soil; Based on the organic matter transfer rule between the soil layers, the new organic matter supply concentration of the new middle layer of the soil under the action of the new organic matter concentration of the middle layer of the soil is obtained; Based on the new organic matter concentration of the bottom layer of the soil and the new organic matter supply concentration of the middle layer of the soil, the demand amount of the organic matter of the bottom layer of the soil in the corn field partition is obtained; Based on the demand amount of the organic matter of the bottom layer of the soil in the corn field partition and the organic matter output rate of the corn straw decomposition process, the amount of straw returned to the field in the corn field partition is obtained.

8. The method according to claim 1, wherein, Based on the amount of straw returned to the field in the corn field partition, the amount of accelerator put into the corn field partition is obtained, including: Obtaining the straw decomposition efficiency of different accelerators to determine the type of accelerator; Based on the type of accelerator, the corn straw decomposition speed under the action of the accelerator is obtained; Based on the corn straw decomposition speed and the amount of straw returned to the field in the corn field partition, the amount of accelerator put into the corn field partition is obtained.

9. The method according to claim 1, wherein the corn stalks are efficiently returned to the field by the method. Based on the amount of straw returned to the field in the corn field partition and the amount of accelerator put into the corn field partition in the corn field partition, the straw returned to the field and the accelerator are configured, and a new bottom layer of the soil is set in the autumn, including: Based on the amount of straw returned to the field in the corn field partition and the amount of accelerator put into the corn field partition obtained for all corn field partitions, the straw returned to the field and the accelerator are configured for all corn field partitions; The accelerator is uniformly sprayed on the straw returned to the field to obtain treated straw returned to the field; In the stage of the corn field in the autumn, the soil of the surface layer of the soil in the corn field partition is mixed with the treated straw returned to the field, and a new bottom layer of the soil is set.

10. The method according to claim 1, wherein, The new soil bottom layer is used to build a new soil middle layer and a new soil surface layer, including: After the new soil bottom layer is obtained, the soil of the original soil bottom layer is arranged on the new soil bottom layer to form a new soil middle layer; After the new soil middle layer is obtained, the soil of the original soil middle layer is arranged on the new soil middle layer to form a new soil surface layer.

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