Rice field-wetland water resource allocation method

Abstract

The rice field-wetland water resource allocation method comprises the following steps: acquiring nutrient substance concentrations of different sampling points in a rice field; obtaining a target nutrient substance gap of the rice field based on the required concentration of the nutrient substances in the rice growth stage; acquiring nutrient substance concentrations of different sampling points in the wetland water resource; based on the target nutrient substance gap of the rice field, obtaining a target wetland area for supplying water to the rice field and a water resource quantity input to the rice field; the predicted precipitation amount is obtained, and the nutrient substance concentration of the paddy field area after precipitation is obtained; and obtaining water resource allocation based on the rice field rainfall nutrient substance concentration. The problem that the concentration of nutrient substances in a water body does not meet the growth requirement of rice because a water resource mode is qualitatively input to the rice field only through the change of the water level of the rice field is solved. Therefore, by considering the nutrient concentration of the rice field, the nutrient concentration of the wetland water resource, the influence of rainfall on the concentration and other factors, quantitative adjustment of the nutrient concentration of the rice field water resource is achieved.

Description

Technical Field

[0001] The present application belongs to the field of smart agricultural technology, and specifically, belongs to a rice field-wetland water resources allocation method. Background Art

[0002] The development of smart agriculture has entered a critical period. At present, in almost all agricultural fields, attempts have been made to use smart agricultural facilities to increase crop yields, and good results have been achieved. However, in recent years, it has been found that compared with traditional rice planting technology, the development of smart agriculture has certain shortcomings, especially the rice cultivation technology using flooding technology, which has less application of smart agricultural facilities and technologies. The reason is that in the current rice cultivation, only the water level monitoring technology in the rice field is established, and the rice field is watered and drained based on the monitoring results. The problem with this method is that the demand for nutrients of rice is different in different growth cycles. If the water supply and drainage operation is only based on the change of rice field water level, it cannot meet the flexible and precise adjustment of nutrients based on the surrounding wetland water resources. It is too dependent on the experience of farmers. More commonly, farmers will add fertilizers that exceed the demand for rice. This situation is easy to lead to a reduction in rice production on the one hand, and on the other hand, it fails to make full use of the nutrients in the surrounding wetland water resources. The long-term application of a large amount of fertilizers has a greater impact on the surrounding environment, mainly leading to eutrophication of wetland water resources, making it difficult to achieve the goal of green agriculture.

[0003] In summary, how to establish a reasonable rice field-wetland water resources allocation method to ensure that rice obtains sufficient nutrients during different growth cycles and achieve the development goal of green agriculture in rice cultivation is a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0004] The purpose of this application is to provide a rice field-wetland water resources allocation method to solve the problem of difficulty in rationally utilizing nutrients in wetland water resources and simply utilizing water resources in wetland water resources in the existing rice field and wetland water resources allocation technology.

[0005] A rice field-wetland water resources allocation method, the allocation method comprising: Obtain the nutrient concentrations at different sampling points in the rice field, and obtain the average concentration of all nutrients in the rice field to obtain the existing nutrient concentrations in the rice field; Based on the required concentration of nutrients in the rice growth stage, the target nutrient gap of the rice field is obtained; Obtain the nutrient concentrations at different sampling points in the wetland water resources and obtain the average nutrient concentrations in different areas of the wetland; Based on the target nutrient gap of the rice field, the target wetland area for supplying water to the rice field is obtained, and the amount of water resources input from the wetland water resources to the rice field is obtained to obtain the water volume of the rice field; Obtain the predicted precipitation, obtain the nutrient concentration of the rice field area after precipitation, and obtain the nutrient concentration of the rice field precipitation; Based on the nutrient concentration of rice field precipitation, the amount of wetland water resources input from wetland water resources to rice field water resources is obtained.

[0006] Optionally, the step of obtaining the nutrient concentrations at different sampling points in the rice field and obtaining the average of all nutrient concentrations in the rice field to obtain the existing nutrient content in the rice field includes: Setting sampling points in the rice field area and obtaining the existing nutrient concentrations in the rice field at the sampling points; Based on the existing nutrient concentrations in the paddy fields at the sampling points, obtaining the mean nutrient concentrations in the paddy fields at the sampling points; The water level height and the area of ​​the rice field are obtained, and based on the average concentration of the existing nutrients in the rice field, the existing nutrient content of all the rice fields is obtained.

[0007] Optionally, obtaining the target nutrient gap of the rice field based on the required concentration of nutrients at the rice growth stage includes: Based on the demand for nutrients during the growth stage of rice, a nutrient requirement concentration table for rice throughout its life cycle is established to obtain a rice nutrient requirement concentration table; Based on the rice nutrient requirement concentration table, obtaining the staged target nutrient requirement of the rice field; Based on the required concentration of the target nutrients in the rice field at each stage, the target nutrient gap in the rice field is obtained.

[0008] Optionally, obtaining the target nutrient gap of the rice field based on the required concentration of the target nutrient of the rice field at a certain stage includes: The area and water level of each rice field are obtained respectively, the water volume of each rice field is obtained, and the corresponding relationship between the water volume of each rice field and the rice field number is established; Based on the water volume of the rice field, the target nutrient mass of the rice field at different stages corresponding to the rice field numbers is obtained. The determination equation of the target nutrient mass of the rice field at different stages is: ; in, It indicates the target nutrient quality of rice fields at different stages; S Indicates the area of ​​rice fields; represents the mean water level height of the rice field; Indicates the stage-by-stage nutrient requirement concentration; Based on the existing nutrient content of the rice field, the target nutrient gap of the rice field is obtained, and the determination equation of the target nutrient gap of the rice field is: ; in, It indicates the target nutrient gap of rice fields; It indicates the total target nutrients of rice fields at each stage; S Indicates the area of ​​rice fields; represents the mean water level height of the rice field; Indicates the average concentration of nutrients in rice fields.

[0009] Optionally, obtaining the nutrient concentrations at different sampling points in the wetland water resources to obtain the average nutrient concentrations in different areas of the wetland includes: Sampling points are set in the wetland water resource area to obtain wetland sampling points and obtain the concentrations of all wetland nutrients obtained at the wetland sampling points; Based on the concentrations of all wetland nutrients obtained at the wetland sampling points, the concentrations of different types of nutrients in the wetland water resources are obtained to obtain the regional nutrient concentrations; Based on the nutrient concentration in the region, the difference between the nutrient concentration at all sampling points in the wetland water resources and the nutrient concentration in the region is obtained to obtain the deviation of the nutrient concentration at the sampling point; Acquire the sampling point where the nutrient concentration deviation of the sampling point is lower than the nutrient concentration deviation of the preset sampling point to obtain an edge sampling point; Adjacent edge sampling points are connected to form an average nutrient concentration area of ​​wetland water resources, and the average nutrient concentration of different areas of the wetland is obtained.

[0010] Optionally, the concentrations of different types of nutrients in the wetland water resources are obtained based on the concentrations of all wetland nutrients obtained at the wetland sampling points to obtain the regional nutrient concentrations, including: Based on all nutrient concentrations obtained at the wetland sampling points, obtaining all nutrient concentrations of the wetland; Based on the concentrations of all the wetland nutrients, obtaining the wetland nutrient with the highest wetland nutrient concentration to obtain the dominant wetland nutrient; Setting the area covered by the wetland sampling points with the same dominant wetland nutrients as the coverage area of ​​the dominant wetland nutrients; The average concentration of all the wetland nutrients in the coverage area of ​​all the dominant wetland nutrients is obtained to obtain the regional wetland nutrient concentration.

[0011] Optionally, based on the target nutrient gap of the rice field, obtaining the target wetland area for supplying water to the rice field, and obtaining the amount of water resources input from the wetland water resources to the rice field to obtain the water volume of the rice field includes: Obtain the target nutrient gap of rice fields to obtain the demand for different nutrients in rice fields; Based on the demand of the paddy field for different nutrients, the amount of water in the paddy field is obtained. The equation for determining the amount of water in the paddy field is: ; in, Preprocessing parameters representing the amount of water input to rice fields from the coverage area of ​​dominant wetland nutrients; Indicates different target nutrient gaps in the target nutrient gap of rice fields; Indicates the first part of the target nutrient gap in rice fields p The target nutrient gap is The corresponding value in ; represents the concentration of regional wetland nutrients; Indicates m The amount of water input to rice fields from the area covered by dominant wetland nutrients; Indicates m The proportion of water resources input to rice fields from the area covered by dominant wetland nutrients; Indicates m The target nutrient gap in rice fields is Any value in ; Indicates p The target nutrient concentration for the area covered by the dominant wetland nutrient is The corresponding value in ; m An index of the area covered by dominant wetland nutrients; n Indicates the total amount of coverage area index of dominant wetland nutrients; p The target nutrient index representing the target nutrient gap in the rice field; q The total amount of target nutrient index representing the target nutrient gap in rice fields.

[0012] Optionally, also include: Comparing the nutrient concentration in the rice field with the nutrient concentration required for the rice at the growth stage, and if the nutrient concentration in the rice field is higher than the target nutrient requirement of the rice field at the stage, obtaining the adjusted amount of the nutrient concentration; Based on the adjusted amount of the nutrient concentration, the water resource allocation amount is obtained, and the determination equation of the water resource allocation amount is: ; in, represents the amount of water resources allocated, indicating the amount of water resources allocated from rice fields to wetlands; represents the nutrient concentration within the covered area of ​​non-dominant wetland nutrients; Based on the water resource allocation amount, an equal amount of water resource allocation from the wetland to the rice field is obtained.

[0013] Optionally, the step of obtaining the predicted precipitation, obtaining the nutrient concentration in the paddy field area after precipitation, and obtaining the nutrient concentration in the paddy field precipitation includes: Obtaining the predicted precipitation in the area where the rice field is located, and obtaining the water level height of the rice field caused by the predicted precipitation, to obtain the water level height of the rice field after precipitation; Based on the water level height of the paddy field after the precipitation and the area of ​​the paddy field, obtaining the concentration of nutrient substances in the paddy field precipitation; The nutrient concentration of the wetland after precipitation is obtained, and the dominant area of ​​the dominant wetland nutrients after precipitation is obtained.

[0014] Optionally, the step of obtaining the amount of wetland water resources input from wetland water resources to paddy field water resources based on the concentration of nutrient substances in rice field precipitation includes: Based on the nutrient concentration of the rice field precipitation, obtaining the target nutrient gap of the rice field after precipitation or the adjusted amount of the nutrient concentration; Based on the target nutrient gap of the rice field after the precipitation, the amount of wetland water resources input to the rice field after the precipitation from the coverage area of ​​the different dominant wetland nutrients after the precipitation is obtained, or, based on the adjusted amount of the nutrient concentration, the amount of water resources allocated after the precipitation is obtained, and water resources are allocated between the rice field and the wetland.

[0015] The beneficial effects of this application include: 1. Rationally utilize the nutrients in wetland water resources. Based on the analysis and regional division of nutrients in wetland water resources, rationally call for nutrients in wetland water resources, and analyze the target nutrient gap in rice fields, so as to input wetland water from the corresponding areas in wetland water resources, so as to achieve the purpose of fully utilizing the nutrients in wetland water resources.

[0016] 2. Weather factors are introduced. By obtaining the predicted precipitation and analyzing the impact of the predicted precipitation on the concentration of nutrients in the rice fields, the new nutrient concentration in the rice fields can be determined when precipitation occurs or in the predicted results of precipitation. Then, water resources in the relevant areas are continuously drawn from the wetland water resource system to replenish the nutrients in the rice fields, thus achieving all-weather nutrient filling of the rice fields.

[0017] 3. Accurately determine the nutrients in the rice fields. By setting sampling points in the rice fields, determine the nutrient concentration and the total nutrient content, and at the same time determine the nutrient gap of rice in different growth cycles. Based on the gap, the water resources of the rice fields and wetlands are allocated to ensure that the concentration of nutrients in the rice fields is the same as the growth requirements of rice in different rice growth cycles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments of the present application or the prior art. Obviously, the following description is only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific implementation methods, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings: Figure 1 A flow chart of a rice field-wetland water resources allocation method provided in an embodiment of the present application; Figure 2 A schematic diagram of the spatial distribution of rice fields and wetlands in a rice field-wetland water resources allocation method provided in an embodiment of the present application; Figure 3 A schematic diagram of the dominant wetland nutrient coverage area disclosed in a rice field-wetland water resources allocation method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application. In addition, in the embodiments of the present application, "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0020] In the current development of smart agricultural technology, all-weather and all-time precision control technology has begun to be gradually promoted. For example, stable drip irrigation technology based on automatic control is used for corn, and precise drug delivery technology is used for fruit trees. However, it can be seen that these intelligent technologies are more commonly used in arid areas and dryland areas in the agricultural field. For rice, although drip irrigation or sprinkler irrigation technology is currently used in some areas, the effect of its use is unsatisfactory. The reason is that rice fields are usually set up in areas with abundant water resources, and traditional rice fields mostly use flood irrigation technology, which is difficult to achieve in a short period of time. Completely replace flood irrigation technology with sprinkler irrigation or drip irrigation technology. In the existing smart agriculture of rice fields, the water storage capacity in the rice fields is mostly automatically detected, and then the water level is adjusted. The main problem with this method is that there is a difference in the nutrient concentration in the wetland water resources and the nutrient concentration in the rice fields compared with the wetland water resources in the rice fields and their marginal areas. In conventional methods, wetland water resources are actually treated as pure water, and the nutrient resources in the wetland water resources are not fully utilized. Therefore, in this case, the existing smart agriculture has more serious limitations in the allocation of rice field-wetland water resources.

[0021] In the technical solution of this application, a rice field-wetland water resources allocation method is disclosed to solve the problems existing in the current allocation scheme, such as Figure 1 As shown, it is a flow chart of a rice field-wetland water resources allocation method provided in an embodiment of the present application, specifically: S110, obtaining the nutrient concentrations at different sampling points in the rice field, and obtaining the average value of all nutrient concentrations in the rice field, to obtain the existing nutrient content in the rice field.

[0022] S120. Based on the demand for nutrients during the rice growth stage, obtain the total target nutrient gap in the rice field.

[0023] S130. Obtain nutrient concentrations at different sampling points in wetland water resources to obtain average nutrient concentrations in different areas of the wetland.

[0024] S140. Based on the target total nutrient gap of the rice field, a target wetland area for supplying water to the rice field is obtained, and the amount of water resources input from the wetland water resources to the rice field is obtained to obtain the water volume of the rice field.

[0025] S150, obtaining predicted precipitation, obtaining nutrient concentration in the rice field area after precipitation, and obtaining precipitation nutrient concentration in the rice field.

[0026] S160. Based on the concentration of nutrient substances in the rice field precipitation, the amount of wetland water resources input from the wetland water resources to the rice field water resources is obtained.

[0027] The purpose of all the above steps is to obtain the rice field parameters in the rice field-wetland water resource system and perform sampling processing to obtain the current nutrient content in the rice field, and determine the nutrient gap in the rice field based on the demand for nutrients in different growth cycles of rice, so as to determine that in the allocation of rice field water resources, water resources can be reasonably allocated from the wetland area based on the obtained gap value. At the same time, based on the predicted value of precipitation, the impact of precipitation on nutrient concentration is determined, and the amount of water resources to be allocated is calculated based on the parameter, so as to determine the concentration adjustment method after precipitation, thereby realizing the precise and all-weather allocation of water resources in rice fields.

[0028] Below, we will explain in detail the contents of all the above steps, specifically: As described in step S110, the purpose is to obtain the concentration of all nutrients currently existing in the rice field. The reason for obtaining this parameter is that there will be a variety of different nutrients in the rice field area, and the demand for nutrients is different in different growth cycles of rice. Therefore, it is necessary to lay the foundation for the calculation of nutrient gaps in the subsequent rice growth process based on all existing nutrient concentrations. Specifically including: S111, setting sampling points in the rice field area, and obtaining water samples at the sampling points.

[0029] The purpose of this step is that in the rice field area, especially in a large area of ​​rice fields, when water supply and drainage or precipitation occurs, the concentration of nutrients in the rice fields is different. After a period of time, these nutrients will be evenly distributed in the rice fields. However, considering that in the technical solution of this application, it is also necessary to consider the impact of precipitation on concentration, the impact of rice field water supply and drainage on concentration, etc., it is usually necessary to be able to obtain the water resource allocation for rice field-wetland water resources in a short time. Therefore, setting sampling points in the rice fields can better obtain the existing nutrient concentrations in the rice field area.

[0030] The nutrient concentration in the rice field indicates the current concentration of the nutrients that already exist in the rice field.

[0031] Among them, based on the rice field area of ​​the standard graphics, sampling points are set according to the length and width of the rice field, among which the four adjacent sampling points and the rice field area are similar graphics.

[0032] In some embodiments, a plurality of sampling points are set based on the water inlet, the drainage outlet, the diagonal area between the water inlet and the drainage outlet, and the middle area of ​​the paddy field area to configure the sampling points.

[0033] In some embodiments, the shapes of the sampling points are set based on the shape of the rice field, and the sampling points are set within the rice field.

[0034] Among them, water samples are obtained at rice field sampling points, and all existing nutrients in the samples are obtained, and the concentration of nutrients therein is obtained.

[0035] In some embodiments, a device for identifying and detecting the concentration of nutrients is set at the sampling point, and the device has an automatic detection function, and then the existing nutrient concentration of the rice field is obtained in real time.

[0036] In some embodiments, water samples are obtained from the sampling point area, and then based on specific detection, the types of nutrients in the sampling point and the existing nutrient concentrations are obtained.

[0037] Among them, for all the obtained nutrient types and nutrient concentrations, it is necessary to record the nutrient types and the corresponding nutrient concentrations therein, so as to establish a corresponding relationship.

[0038] Among them, the existing nutrient concentration in rice fields includes the concentration of main nutrients in the current rice fields, including: nitrogen concentration, phosphorus concentration, potassium concentration, trace element concentration, organic matter concentration, etc.

[0039] S112. Based on the existing nutrient concentrations in the rice fields at the sampling points, obtain the average nutrient concentrations in the rice fields at the sampling points.

[0040] The purpose of this step is that for the rice field area, the existing nutrient concentration in the rice field will be disturbed, so by calculating the mean of the existing nutrient concentration in the rice field, the disturbance of the existing nutrient concentration in the rice field can be fully eliminated. In addition, considering that in the technical solution of the present application, the total amount of water resources allocated is determined based on the corresponding nutrient concentration, and for the specific calculation method, the nutrient content is used as a limiting value, and by obtaining the mean, the nutrient content can be calculated with higher accuracy, rather than directly calculated based on the obtained concentration value.

[0041] Among them, based on the existing substance concentrations in rice fields obtained at all sampling points, the mean of the existing nutrient concentrations in all types of rice fields was calculated to obtain the results.

[0042] In some embodiments, based on the correspondence between all existing nutrients in the rice fields and their corresponding concentrations described in step S111, the mean of all existing nutrient concentrations in the rice fields is calculated to obtain a result.

[0043] S113, obtaining the water level height and area of ​​the rice fields, and obtaining the existing nutrient content of all the rice fields based on the average concentration of the existing nutrients in the rice fields.

[0044] The purpose of this step is that paddy field water may be introduced or discharged, which may cause changes in the nutrient concentration in the paddy field water, especially during the introduction process. For example, the concentration near the water inlet is significantly higher or lower, but after standing for a period of time, the nutrient concentration of the paddy field water will approach the same. This application is a 24 / 7 monitoring method, that is, the drainage and water inlet process must also be monitored, and then the gap is calculated. This method can be used to determine the uniform concentration after standing to obtain a more accurate nutrient gap.

[0045] Among them, the volume of water in the rice field is obtained based on the water level height and area of ​​the rice field.

[0046] Among them, after determining the existing nutrient concentrations of all rice fields, the existing nutrient content of all rice fields is obtained by multiplying the water volume and concentration.

[0047] As described in step S120, the purpose of this step is to obtain the demand for nutrients of rice in the rice field during different growth cycles, so as to lay the foundation for the subsequent water resource allocation process. However, it is particularly important to note that in fact, in this step, the nutrient concentration gap parameter finally determined adopts this value because if it is determined directly based on the total amount of nutrients, it may cause the normal growth process of rice to be disturbed. For example, during the heading period of rice, the demand for organic matter and nitrogen increases. At this time, if only the total amount is guaranteed, the nutrient concentration in the rice field is likely to be too high, causing the osmotic pressure of rice to be lower than the environmental osmotic pressure, resulting in rice dehydration, and then reducing yield. Therefore, this application determines the final result by setting a concentration gap plan. Specifically: S121. Based on the demand for nutrients during the growth stages of rice, a nutrient requirement concentration table for the entire life cycle of rice is established to obtain a rice nutrient requirement concentration table.

[0048] The purpose of this step is to determine the nutrient requirements of rice during its growth cycle. The specific nutrient requirements of rice during different growth cycles are determined to obtain the concentration requirements.

[0049] Among them, based on the variety of rice currently planted in the rice fields, the demand of this variety of rice for different types of nutrients is obtained.

[0050] Among them, based on the demand of rice for different types of nutrients, the concentration demand of the rice variety for different nutrients can be directly obtained or estimated based on parameters such as information query, variety description, etc. For the estimation process, calculations can be performed based on the growth cycle of rice, the average daily demand for nutrients, the water volume of the rice field, etc.

[0051] Among them, in the calculation of all nutrient concentrations, considering that there are multiple nutrients in the rice field at the same time, and that rice has different requirements for different nutrients in different growth cycles, in order to avoid the concentration of one nutrient meeting the demand, while the concentration of other nutrients exceeds the demand and leads to reduced production, the required concentration of rice for all relevant nutrients needs to be obtained simultaneously in the construction of the concentration table. As shown in Table 1, the requirements of a certain variety of rice for the concentration of relevant nutrients in different growth cycles are: Table 1 Nutrient requirement concentration of a certain rice variety during its entire life cycle ; It can be seen that during the growth of this variety of rice, except for the demand for organic matter which remains basically unchanged during the seedling stage, tillering stage, heading stage and maturity stage, the demand for other nutrients fluctuates significantly. Therefore, in the specific analysis, it is necessary to rationally allocate water resources in the rice fields based on these requirement values.

[0052] S122. Based on the rice nutrient requirement concentration table, obtain the staged target nutrient requirement of the rice field.

[0053] The purpose of this step is that although the demand for different nutrients can be determined during the growth cycle of rice, in the subsequent water resource allocation, it is actually only possible to determine the total amount of water resources when allocating between rice fields and wetland water resources. If the allocation is only based on concentration, it is actually difficult to obtain accurate values ​​for the entire allocation process. Therefore, the calculation method based on the staged target nutrient demand of rice fields can ensure that in the actual allocation of water resources, the allocation amount of water resources can be determined based on this parameter to allocate water resources between rice fields and wetlands.

[0054] The current growth cycle of rice is obtained to determine the demand for various nutrients during the growth period of the rice.

[0055] Among them, based on the water volume in the rice field and the rice nutrient requirement concentration table, the required amount of all nutrients is calculated. The specific calculation method is the product of the concentration and the water volume.

[0056] Among them, according to the units of various parameters in Table 1, kg / mu and percentage, the percentage parameters do not need to be converted. For the concentration units, it is necessary to convert them based on the conversion relationship between the units in Table 1 and the water volume, that is: determine the water volume per mu of rice field, and then convert them based on the units of mu and square meters.

[0057] Among them, for all nutrients, such as all nutrients shown in Table 1, corresponding stage-by-stage target nutrient requirements for rice fields are established.

[0058] S123. Obtaining the target nutrient gap of the rice field based on the required concentration of the target nutrient in the rice field at each stage.

[0059] The purpose of this step is that for the specific growth process of rice, all nutrients in it actually need to be adjusted based on the concentration value to ensure the rice yield, and for the allocation process of rice fields and wetlands, the total amount of allocated water resources and the nutrient content gap are calculated. By determining the amount of water resources allocated to adjust the nutrient concentration, the amount of water resources allocated can be calculated based on the concentration gap in the calculation of the amount of water resources allocated. Specifically: S1231. Obtain the area and water level of each rice field respectively, obtain the water volume of each rice field, and establish a corresponding relationship between the water volume of each rice field and the rice field number.

[0060] The purpose of this step is that the calculation of nutrient concentration in rice fields actually needs to be based on the rice fields themselves. In addition, considering that in actual terrain, rice fields are usually set up around wetland water resource areas, this leads to differences in nutrient concentrations in water resources in rice fields. This is because wetland water resource areas are usually much larger than the area of ​​a single rice field, and there are usually differences in the water volume of each rice field. Therefore, the water volume of the rice field must be calculated separately, and the nutrient concentration gap is calculated based on this value. In addition, considering that there will be multiple rice fields around wetland water resources, the nutrient concentration is calculated for each rice field separately, so that the water resources of each rice field can be allocated separately. Among them, the common spatial relationships between wetland water resources and rice fields are as follows: Figure 2 As shown, it is a schematic diagram of the spatial distribution of rice fields and wetlands in a rice field-wetland water resource allocation method provided in an embodiment of the present application, wherein the digitally labeled areas are rice field numbers, wherein for each rice field, it is necessary to determine the nutrient gap in the rice field separately, and then input nutrients based on different wetland areas.

[0061] The area and water level of each rice field are obtained, and each rice field is labeled accordingly.

[0062] Among them, the rice field area and water level are recorded for each rice field, so as to obtain the water volume of each rice field.

[0063] The corresponding relationship between the water volume and the corresponding rice field number is established, so as to determine the water volume in each rice field with a number.

[0064] S1232. Based on the water volume of the rice field, obtain the target nutrient mass of the rice field corresponding to the different rice field numbers. The determination equation of the target nutrient mass of the rice field is: ; in, It indicates the target nutrient quality of rice fields at different stages; S Indicates the area of ​​rice fields; represents the mean water level height of the rice field; Indicates the stage-by-stage nutrient requirement concentration.

[0065] The purpose of this step is to calculate the demand for various nutrients of rice in different rice growth cycles after the water volume and the required concentration of the stage target nutrients of the rice field have been determined, so as to ensure that the gap of relevant nutrients can be obtained in the subsequent calculations, so that in the subsequent water resource allocation, the amount of water resources to be allocated to the rice field can be determined based on the obtained nutrient gap value. In addition, it is also determined based on the stage target nutrient quality of the rice field corresponding to the rice field number, which can be used to allocate water resources to each subsequent rice field.

[0066] Among them, for the calculation of the average water level height of the rice field, by calculating the water level depth of each area in the rice field, this method can achieve a more accurate determination of the water level of the rice field.

[0067] Among them, it is necessary to correspond the water volume and the average water level height in each rice field based on the rice field number, so as to determine the water volume in each rice field.

[0068] Among them, it is necessary to calculate the phased target nutrient mass in each rice field based on the rice field number, and after the phased target nutrient mass has been obtained, it should be matched with the corresponding rice field number.

[0069] S1234. Based on the existing nutrient content of the rice field, the target nutrient gap of the rice field is obtained. The determination equation of the target nutrient gap of the rice field is: ; in, It indicates the target nutrient gap of rice fields; It indicates the total target nutrients of rice fields at each stage; S Indicates the area of ​​rice fields; represents the mean water level height of the rice field; Indicates the average concentration of nutrients in rice fields.

[0070] The purpose of this step is to obtain the current nutrient gap in the rice field by determining the existing nutrient concentration in the rice field and applying the volume of water in the rice field.

[0071] Among them, the concentration of existing nutrients in the rice fields is determined based on the sampling points mentioned above, and the average concentration is calculated.

[0072] Among them, it is necessary to determine the average water level height of the rice field, as well as the area of ​​the rice field, and take the difference to obtain the result.

[0073] Among them, for the target nutrient gap obtained in the rice fields, there will obviously be positive and negative values. The positive value means the amount of nutrients that need to be input into the rice fields, and the negative value means the amount of nutrients that need to be discharged from the rice fields to the wetland water resources area.

[0074] As described in step S130, the purpose of this step is that since wetlands occupy a large area and wetland areas usually need to be connected to other water sources, the hydrological environment of wetland areas is relatively complex. In the allocation of water resources between rice fields and wetlands, the nutrient content in different locations of the wetland area is very different. For example, in areas where there are a large number of aquatic plants in the wetland, the organic matter content and nitrogen content are significantly higher than those in areas where there are no aquatic plants. A key purpose of the present application is to set up different water intake equipment in the wetland water resources. The nutrient concentrations in the water resources input into the rice fields by such equipment are different. By utilizing the difference in nutrient concentrations, water resources from different regions are applied to the rice fields, and the total amount of water resources input is different. Thus, by adopting a combination of water resources from different regions, the concentration of nutrients in the rice field water resources can be adjusted, and water resources can be allocated. Specifically: S131. Set sampling points in the wetland water resource area to obtain wetland sampling points, and obtain the concentrations of all wetland nutrients obtained at the wetland sampling points.

[0075] The purpose of this step is to determine the nutrient concentrations in different areas of the wetland water resource coverage area, so that based on the obtained wetland nutrient concentrations, the enrichment conditions of different nutrients in the wetland water resource area can be determined.

[0076] The technical means adopted in this step are the same as the method for setting sampling points and obtaining nutrient concentrations disclosed in step S110, and will not be repeated here.

[0077] S132. Based on the concentrations of all wetland nutrients obtained at the wetland sampling points, the concentrations of different types of nutrients in the wetland water resources are obtained to obtain the regional nutrient concentrations.

[0078] The purpose of this step is to obtain the nutrient concentration of different areas in the wetland water resource area during the process of obtaining the nutrient concentration of the wetland water resource area. In this technical solution, the zoning analysis of the wetland water resource concentration can be achieved to obtain the nutrient concentration in different areas. Specifically: S1321. Obtain the wetland nutrient concentration based on all nutrient concentrations obtained at the wetland sampling points.

[0079] The purpose of this step is that for wetland water resource areas, the enrichment of various nutrients is different. Therefore, in the specific treatment process, the nutrients enriched in different areas of the wetland water resource area are determined. Therefore, this step is based on the nutrient concentrations obtained at the sampling points to determine the nutrient enrichment in different areas.

[0080] The nutrient concentration obtained at each sampling point is obtained, and the measurement value can be obtained based on the corresponding sensor.

[0081] Among them, all nutrient concentration parameters in wetland water resources are obtained and the parameters are recorded.

[0082] Among them, the spatial positions of all sampling points are recorded to lay the foundation for subsequent regional division work.

[0083] S1322. Based on the wetland nutrient concentration, obtain the wetland nutrient with the highest wetland nutrient concentration to obtain the dominant wetland nutrient.

[0084] The purpose of this step is that for the water resources in the wetland area, the nutrient contents at different sampling points are basically different. By sorting the nutrient contents, the dominant wetland nutrients at the current sampling point can be determined.

[0085] Among them, the concept of dominant wetland nutrients is the nutrients with the highest nutrient concentration parameters.

[0086] Among them, for the nutrient concentration parameters obtained at the sampling points, all nutrient concentrations therein are ranked, and the nutrient with the largest concentration value is selected as the dominant wetland nutrient.

[0087] In some embodiments, the concentration parameters of various nutrients at the current sampling point are also analyzed. When it is found that among the nutrient concentration parameters at the sampling point, although the concentration of a certain type of nutrient is not the highest, but the concentrations of this nutrient at all the surrounding sampling points are dominant wetland nutrients and the concentration parameters are similar, then the nutrient at the sampling point is also confirmed as the dominant wetland nutrient.

[0088] S1323. Set the area covered by the wetland sampling points with the same dominant wetland nutrients as the coverage area of ​​the dominant wetland nutrients.

[0089] The purpose of this step is to determine the dominant wetland nutrients, based on the sampling points corresponding to the dominant wetland nutrients, and to delineate the area where the dominant wetland nutrients are located. The adjacent sampling points can be directly connected, and the resulting closed figure is the coverage area of ​​the dominant wetland nutrients. Figure 3 As shown, it is a schematic diagram of the coverage area of ​​the dominant wetland nutrients disclosed in a rice field-wetland water resources allocation method provided in an embodiment of the present application, wherein N1~N4 represent the coverage areas 1~4 of the dominant wetland nutrients, and the dominant nutrient is nitrogen, P1~P2 represent the coverage areas 1~2 of the dominant wetland nutrients, and the dominant nutrient is phosphorus, and K1 represents the coverage area 1 of the dominant wetland nutrients, and the dominant nutrient is potassium. It should be noted that in order to simplify the description, this application does not reflect the areas of organic matter, trace elements, etc., but only shows nitrogen, phosphorus and potassium.

[0090] Among them, the dominant wetland nutrients corresponding to all sampling points are obtained for record.

[0091] Among them, the sampling points of the same type of dominant wetland nutrients are set in the same sampling point data set, and the spatial positions of these sampling points are determined. This can be determined based on various methods such as the spacing between sampling points and setting spatial coordinate values, which are not limited here.

[0092] Among them, the spacing of all the dominant wetland nutrients is determined to determine the spacing between two adjacent sampling points in the same sampling point data set. If it is found that the spacing between a sampling point and other data points is much larger than the spacing between two adjacent sampling points, the sampling point is considered not to belong to the sampling point corresponding to the dominant wetland nutrients.

[0093] In some embodiments, based on the spatial coordinate values ​​of the sampling points, the adjacent relationship of the sampling points in the wetland area is determined, and the adjacent sampling points are directly connected, and the resulting closed graph is the coverage area of ​​the dominant wetland nutrient. It should be noted that when this method is used, the values ​​obtained are sampling point data sets.

[0094] Among them, for the coverage area of ​​the dominant wetland nutrients that have been obtained, it is necessary to set a corresponding label for it, and at the same time record the dominant wetland nutrients corresponding to the label, so that the dominant wetland nutrients corresponding to the area can be determined based on the corresponding area label.

[0095] In some embodiments, in the case where all dominant wetland nutrients are exactly the same, it is necessary to determine the nutrient with the second highest nutrient concentration in the sampling point as the dominant wetland nutrient.

[0096] In some embodiments, for two or more areas where the dominant wetland nutrients are the same but the concentrations of the dominant wetland nutrients are different, these areas are labeled separately and regarded as coverage areas of different dominant wetland nutrients.

[0097] S1324. Obtain the average concentration of all the wetland nutrients in the coverage area of ​​all the dominant wetland nutrients to obtain the regional wetland nutrient concentration.

[0098] The purpose of this step is to simplify the calculation for areas covered by dominant wetland nutrients, where there are multiple nutrients. In the subsequent water resource allocation, only the calculation of the amount of water resources to be allocated needs to be based on fewer calculation processes. The mean concentration of wetland nutrients in areas covered by different dominant wetland nutrients can be calculated to obtain unique concentration values ​​for such areas.

[0099] The coverage area of ​​the dominant wetland nutrients obtained is determined based on a plurality of different nutrient sampling points, and a direct mean calculation is performed on the concentrations of all applied substances in these sampling points.

[0100] Among them, for the obtained mean value of wetland nutrient concentration, a corresponding relationship is established between the mean value and the coverage area of ​​the corresponding dominant wetland nutrient, and the regional wetland nutrient concentration is obtained. It should be noted that this type of method only analyzes the concentration of the dominant wetland nutrient, and it is not necessary to determine other nutrients.

[0101] In some embodiments, the mean concentration of other nutrients in the coverage area of ​​the dominant wetland nutrient is obtained and recorded. This method can ensure that the input of other nutrients is also monitored during the allocation of water resources, and corresponding measures are taken to reasonably allocate water resources. For example, if it is found that the total amount of dominant wetland nutrients input into the rice field meets the requirements, but the content of other nutrients is too high, then it is necessary to divert water from other areas with lower nutrient concentrations, and select areas with higher nutrient concentrations in the dominant wetland for diversion operations, so as to ensure that the concentration of the dominant wetland nutrients remains basically unchanged, and dilute the content of other nutrients.

[0102] Among them, in determining the amount of water in rice fields, it is taken into account that the nutrient concentration in the wetland cannot meet the effect of increasing the nutrient concentration in the rice fields. Therefore, in this case, it is still possible to further analyze the nutrient concentration gap in the rice fields and add fertilizers to them based on the nutrient concentration in the coverage area of ​​the dominant wetland nutrients and allocate water resources according to the above steps.

[0103] S133. Based on the regional nutrient concentration, obtain the difference between the nutrient concentration of all sampling points in the wetland water resources and the regional nutrient concentration to obtain the sampling point nutrient concentration deviation.

[0104] The purpose of this step is that, for the sampling points, it is obviously necessary to obtain the distribution area of ​​the corresponding regional nutrient concentration, based on the nutrient concentration parameters in the sampling points, to obtain the edge sampling points of the coverage area. As for the determination of the edge sampling points, it is necessary to set the analysis value. In this application, the nutrient concentration and the regional nutrient concentration difference are used for determination.

[0105] It should be noted that in steps S1321 to 1324, a method for determining the coverage area of ​​dominant wetland nutrients has been disclosed. For this step and subsequent steps, a more universal method for delineating nutrient concentration areas is disclosed.

[0106] The nutrient concentrations at the sampling points in the wetland area are obtained, and the dominant wetland nutrients are obtained, and the sampling points of the dominant wetland nutrients are set in the same data group.

[0107] Among them, the regional nutrient concentration in the data group is obtained, and the deviation between the regional nutrient concentration and the nutrient concentration of other sampling points is obtained. After obtaining the value, it can be determined based on the deviation whether other sampling points should be included in the regional nutrient concentration data group.

[0108] The calculation of regional nutrient concentration has been done above and will not be repeated here.

[0109] S134, obtaining the sampling point where the nutrient concentration deviation of the sampling point is lower than the nutrient concentration deviation of the preset sampling point, and obtaining the edge sampling point.

[0110] The purpose of this step is to obtain the concentration area of ​​the nutrient, and to determine the area so as to obtain the edge sampling points of the area, and then the nutrient concentration area can be obtained based on the edge sampling points.

[0111] Among them, the nutrient concentration deviation at the sampling point is compared with the nutrient concentration deviation at the preset sampling point. If it is lower than, the current sampling point is the edge sampling point.

[0112] The method used to obtain the preset difference is to determine the regional nutrient concentration and set a deviation for the regional nutrient concentration, which is the deviation of the nutrient concentration at the preset sampling point.

[0113] In some embodiments, the preset deviation is the difference between the average nutrient concentration of the entire humidity area and the regional nutrient concentration.

[0114] In some embodiments, the preset deviation amount is set according to actual needs and experience of technicians.

[0115] S135, connecting the adjacent edge sampling points to form an average nutrient concentration area of ​​the wetland water resources, and obtaining the average nutrient concentration of different areas of the wetland.

[0116] The purpose of this step is to determine the coverage area for regional nutrient concentrations and then calculate the mean nutrient concentrations in different areas of the wetland.

[0117] Among them, the calculation method for the average nutrient concentration in different areas is the same as that in step S1324 and will not be repeated here.

[0118] As described in step S140, the purpose of this step is to select a water supply area based on the target nutrient gap of the rice field, and then calculate the water delivery to the rice field based on the determined water supply area, so as to achieve reasonable water resource allocation between the rice field and the wetland. Specifically: S141. Obtain the target nutrient gap of the rice field to obtain the demand of the rice field for different nutrients.

[0119] The purpose of this step is to set a limit value for determining the total amount of water delivered to the rice fields and obtain the corresponding parameters. Considering that it is difficult to directly calculate the nutrient concentration of wetland water resources, the nutrient mass is treated as a limit value to simplify the calculation.

[0120] Among them, the calculation method of the target nutrient gap in rice fields has been explained above and will not be repeated here.

[0121] Among them, it is necessary to calculate the demand for all types of nutrients of rice during the current growth stage.

[0122] S142. Based on the demand of the paddy field for different nutrients, the amount of water in the paddy field is obtained. The equation for determining the amount of water in the paddy field is: ; in, Preprocessing parameters representing the amount of water input to rice fields from the coverage area of ​​dominant wetland nutrients; Indicates different target nutrient gaps in the target nutrient gap of rice fields; Indicates the first part of the target nutrient gap in rice fields p The target nutrient gap is The corresponding value in ; represents the concentration of regional wetland nutrients; Indicates m The amount of water input to rice fields from the area covered by dominant wetland nutrients; Indicates m The proportion of water resources input to rice fields from the area covered by dominant wetland nutrients; Indicates m The target nutrient gap in rice fields is Any value in ; Indicates p The target nutrient concentration for the area covered by the dominant wetland nutrient is The corresponding value in ; m An index of the area covered by dominant wetland nutrients; n Indicates the total amount of coverage area index of dominant wetland nutrients; p The target nutrient index representing the target nutrient gap in the rice field; q The total amount of target nutrient index representing the target nutrient gap in rice fields.

[0123] The purpose of this step is to set up an equation for a specific calculation method of the amount of water in the paddy field, so that the amount of water in the paddy field can be reasonably determined based on the equation.

[0124] Among them, for the above equation , that is, the different target nutrient gaps in the target nutrient gap of rice fields, refers to the analysis of the specific demand of rice for all nutrients in the current growth cycle, such as nitrogen, phosphorus, potassium, organic matter content and trace elements, and the nutrient quality gap calculation is carried out to determine the total amount of nutrients that need to be input or discharged into the rice fields in the allocation of water resources.

[0125] Among them, for the above equation , which is the first target nutrient gap in rice fields. p The target nutrient gap is The corresponding value in refers to the concentration of a certain nutrient within the target nutrient gap in the current rice growth. That is, The value of The value in is the same as that in , and further, is the concentration of a certain type of nutrient in the gap of target nutrients for rice.

[0126] Among them, for the above equation , that is, p The target nutrient concentration for the area covered by the dominant wetland nutrient is The corresponding value in refers to p The nutrient concentration within the coverage area of ​​a dominant wetland nutrient, that is, The value of The values ​​in are the same, and further, the concentrations of all types of nutrients in the coverage area of ​​dominant wetland nutrients, such as p is 2, and the corresponding nutrient is potassium. The corresponding value in is , these values ​​represent the potassium concentration in wetland nutrients in all areas.

[0127] S143, comparing the nutrient concentration in the rice field with the nutrient concentration required for the rice during the growth stage, and if the nutrient concentration in the rice field is higher than the stage target nutrient requirement of the rice field, obtaining an adjusted amount of the nutrient concentration.

[0128] The purpose of this step is that when allocating water resources between rice fields and wetlands, it is generally believed that when no fertilizer is applied, the concentration of certain nutrients in some areas of the wetland may be higher than the concentration of nutrients in the rice fields, such as areas with a large number of aquatic plants at the edge of the wetland. The humus of such plants will increase the concentration of nutrients, but in the rice fields, especially in the absence of chemical fertilizers, this part of the water resources can be directly used to allocate nutrients. However, in the current rice planting, additional fertilizers are mainly needed, which is prone to the problem of excessive nutrient concentration in the rice fields, affecting rice production. At this time, the fertilizer nutrients in the rice fields need to be diluted, which requires a certain amount of water resources in the rice fields to be discharged first, and then the water resources of the wetlands are introduced to achieve a dilution effect.

[0129] Herein, based on the water resources already set up at the sampling points, the nutrient concentration in the rice fields is obtained, and the average nutrient concentration is obtained.

[0130] Among them, the obtained average nutrient concentration is compared with the stage target nutrient demand of the rice field. If it is found that the nutrient concentration in the rice field exceeds the actual demand of the rice field, it means that the current nutrient content in the rice field exceeds the standard. This excess can easily lead to a reduction in rice production. It is determined that the nutrients in the rice field need to be diluted so that their concentration meets the needs of rice.

[0131] S144. Based on the adjusted amount of the nutrient concentration, obtain the water resource allocation amount. The determination equation of the water resource allocation amount is: ; in, represents the amount of water resources allocated, indicating the amount of water resources allocated from rice fields to wetlands; Represents the nutrient concentration within the covered area of ​​non-dominant wetland nutrients.

[0132] The purpose of this step is to dilute the nutrient concentration in the rice field, taking into account that the amount of water stored in the rice field is fixed, it is impossible to reduce the nutrient concentration by simply adding water. Therefore, the method adopted in this application is to obtain the total amount of nutrients in the current rice field and the stage-by-stage target nutrient demand of the rice field, and then based on the difference, determine the amount of water resources that the rice field needs to discharge to the wetland, and the amount of water resources that need to be injected into the rice field, so as to achieve the dilution effect of the nutrients in the rice field.

[0133] Among them, the calculation of the difference between the total amount of nutrients in the rice fields and the stage-by-stage target nutrient demand of the rice fields is the same as the calculation method of the target nutrient gap of the rice fields, except that the calculation result according to this method is a negative value, so it can be treated as an absolute value here.

[0134] Among them, considering that in addition to the need to drain water from rice fields to wetland areas, since the main idea of ​​this step is to dilute nutrients, there are still a certain amount of nutrients in the water resources used for dilution. In the allocation of water resources, the impact of this part of nutrients also needs to be considered.

[0135] Among them, for the water resources that need to be allocated, since they need to be adjusted with the help of wetland water resources, the denominator parameter needs to be determined based on the nutrient concentration of wetland water resources.

[0136] S145. Based on the water resource allocation amount, obtain an equal amount of water resource allocation from the wetland to the rice field.

[0137] The purpose of this step is to allocate water resources in the rice fields, especially for diluting the fertilizers contained therein. After the water resources are exported from the rice fields, water resources need to be allocated to the rice fields. Since the method for determining the water resources that need to be allocated has been disclosed in step S144, after the water resources in the rice fields are discharged, water resources need to be input into the rice fields to dilute the nutrients.

[0138] Among them, in the process of allocating water resources from wetlands to rice fields, the total amount of water resources allocated from wetlands to rice fields is the same as the calculated amount of water resources allocated.

[0139] Among them, for water resources allocated in rice fields, it is necessary to avoid areas covered by dominant wetland nutrients, because the nutrient concentration in such areas is low. Using water resources in this area can ensure a better dilution effect.

[0140] The nutrient concentration within the coverage area of ​​the non-dominant wetland nutrients that needs to be obtained can be calculated based on the average nutrient concentration of the edge area of ​​the coverage area of ​​the dominant wetland nutrients.

[0141] In some embodiments, multiple sampling points are set in the coverage area of ​​non-dominant wetland nutrients to obtain the nutrient concentration in the area, and the average is calculated, and the result obtained is the nutrient concentration result.

[0142] Among them, in the process of water resource allocation, the water resource of the volume value of water resource allocation can be first output from the rice field to the wetland, and then the water resource of the same volume value can be input from the coverage area of ​​​​nutrients in the non-dominant wetland into the rice field to achieve the dilution of nutrients in the rice field. It should be noted that this method requires a higher frequency of detection of nutrient concentrations in the rice field. It can be carried out at a frequency of 1 to 3 times every 0.5 to 1 day, and determine whether to perform water resource allocation operations based on the test results to avoid excessive nutrient concentrations in the rice field for too long, which may cause serious seedling burns.

[0143] In some embodiments, water resources are allocated by simultaneously inputting wetland water resources into the rice fields and outputting water resources from the rice fields to the wetlands. It is only necessary to ensure that the total amount of water resources input into the rice fields is the water resource allocation amount. This method can fully reduce the water resource allocation time and avoid serious seedling burning. Of course, this method also needs to ensure high-frequency detection of nutrient concentrations within a day, which can be performed at a frequency of 1 to 3 times per 0.5 to 1 day, and determine whether to perform the water resource allocation operation based on the detection results.

[0144] like Figure 3As shown, for the rice field-wetland water resource allocation process, the rice fields are D1~D5, wherein each rice field has different nutrient requirements. Based on the algorithm obtained in the above steps, for different rice fields, the water resources in the coverage area of ​​the dominant nutrients called are different, wherein the direction of the arrow is the direction of water resource input from the coverage area of ​​the dominant nutrients to the corresponding rice fields. Taking D1 as an example, the source areas of the allocated water resources are N1, K1 and P1. Based on this method, water resources are allocated to each rice field from the corresponding coverage area of ​​the dominant nutrients.

[0145] As described in step S150, the purpose of this step is to introduce other interference factors, so as to ensure that under the influence of such interference factors, such interference factors can be eliminated based on the current water resource allocation method, so as to ensure that the nutrient concentration in the rice field can always match the nutrient concentration requirement of the rice. Specifically: S151. Obtain the predicted precipitation in the area where the rice field is located, and obtain the water level height of the rice field caused by the predicted precipitation, to obtain the water level height of the rice field after precipitation.

[0146] The purpose of this step is to take into account that after precipitation, the water level in the rice fields is bound to rise, which will obviously cause the concentration of nutrients in the rice fields to decrease. In essence, it is equivalent to introducing an interfering value, precipitation, which needs to be processed.

[0147] Among them, for predicting precipitation, numerical prediction of precipitation can be carried out based on the weather forecast system to determine the water level height of the rice field during precipitation.

[0148] S152. Obtaining the concentration of nutrient substances in the rice field precipitation based on the water level of the rice field after the precipitation and the area of ​​the rice field.

[0149] The purpose of this step is that the water level in the rice fields after rainfall will rise, but since the area of ​​the rice fields will not change, in actual calculations, the concentration of nutrients in the rice fields after rainfall can be calculated based on this parameter, and then all the above algorithm contents can be completed based on this new concentration.

[0150] Among them, the concentration of all nutrients in the rice fields before precipitation is obtained, and based on the concentration value and the amount of water resources in the rice fields, the nutrient content before precipitation is obtained.

[0151] Among them, the nutrient concentration of rice field precipitation can be calculated based on the nutrient content before precipitation and the volume of rice field water after precipitation.

[0152] S153. Obtain the nutrient concentration of the wetland after precipitation, and obtain the dominant area of ​​the dominant wetland nutrient after precipitation.

[0153] The purpose of this step is that the nutrient concentration in the wetland area and rice field area after precipitation will change greatly, especially short-term sudden precipitation, which has a great impact on the nutrient concentration in the wetland and rice field. Considering that in the technical solution of the present application, a large number of sampling points have been set up, and the nutrient concentration in the sampling points can be measured, even after precipitation occurs, or for the prediction of precipitation, the coverage area of ​​the dominant wetland nutrients after precipitation can be obtained, and the nutrient concentration therein can be obtained, and then the water resources of the rice fields and wetlands can be allocated based on the new nutrient concentration value.

[0154] Among them, the determination of the coverage area of ​​the dominant wetland nutrients after precipitation is the same as the method disclosed above and will not be repeated here.

[0155] Among them, the analysis of the dominant wetland nutrient coverage area under predicted precipitation conditions can be determined based on historical data. Of course, considering that the water storage capacity of rice fields increases after precipitation, it is also possible to allocate water resources in advance based on the predicted precipitation values. However, it is still better to allocate water resources based on the detected values ​​after precipitation.

[0156] As described in step S160, the purpose is to further allocate water resources in the rice fields after precipitation, and to ensure that the nutrient concentration and demand are the same during allocation. Therefore, in the specific technical implementation, the water resource allocation amount for wetlands and rice fields needs to be determined based on the nutrient concentration of rice field precipitation. Specifically: S161. Based on the nutrient concentration of the rice field after precipitation, obtain the target nutrient gap of the rice field after precipitation or the adjusted amount of the nutrient concentration.

[0157] The purpose of this step is to calculate the target nutrient gap after or before precipitation occurs (based on the predicted precipitation value), and then calculate the water resource allocation amount based on the gap value. Taking into account that there may still be a situation where the nutrient concentration in the rice field is higher than the growth requirement of rice, it is also necessary to adjust the nutrient concentration to reduce it. In other words, the purpose of this step also involves the situation of drainage from rice fields to wetlands, so the amount of nutrient concentration to be adjusted also needs to be determined.

[0158] Among them, the calculation method of the target nutrient gap of the rice field after precipitation is the same as the calculation method of the target nutrient gap of the rice field disclosed in step S120, and will not be repeated here.

[0159] The adjusted nutrient concentration refers to the value of the nutrient concentration in the rice field being higher than the required concentration of the rice field's stage target nutrients. This value can be calculated directly for the concentration or based on the total amount of nutrients.

[0160] Among them, the calculation of the adjusted amount of nutrient concentration can be determined based on the predicted precipitation. Specifically, the total amount of water in the rice field is obtained based on the predicted precipitation, and on this basis, the ratio of the nutrient content and the total amount of water in the rice field is obtained to obtain the nutrient concentration of the rice field area based on the predicted precipitation.

[0161] S162. Based on the target nutrient gap of the rice field after the precipitation, obtain the amount of wetland water resources input to the rice field after the precipitation from the coverage area of ​​the different dominant wetland nutrients after the precipitation, or, based on the adjusted amount of the nutrient concentration, obtain the amount of water resources allocated after the precipitation, and allocate water resources between the rice field and the wetland.

[0162] The purpose of this step is to calculate the amount of wetland water resources input into the rice fields after precipitation, or to obtain the water resources that need to be allocated after actual precipitation based on the precipitation forecast value, so as to ensure that through the allocation of water resources, the nutrient concentration in the rice fields can be fully matched with the target nutrient concentration requirement value.

[0163] The determination method of this step is the same as the method disclosed in S140 and will not be repeated here.

[0164] Among them, in the technical solution of the present application, the regional nutrient concentration of the wetland water resources after precipitation is also recalculated, and in the subsequent water source processing, water resources need to be allocated according to the new area.

[0165] In some embodiments, the impact of precipitation on the nutrient concentration in wetland water resources is not taken into account, because the wetland area covers a much larger area than the rice field, and the change in nutrient concentration caused by precipitation is much smaller than that in the rice field area. Therefore, there is no need to re-test the nutrient concentration of the wetland and it can be directly applied based on the original value.

[0166] In some embodiments, in determining the amount of water resources to be allocated to the rice fields in this step and all the above steps, the original water resources in the rice fields are completely drained and then refilled. In this case, the calculation can be made directly based on the stage-by-stage target nutrient demand of the rice fields, and this value can be directly used as the target nutrient gap.

[0167] In some embodiments, each time water resources are allocated, a certain amount of existing water resources in the rice fields are released, and the amount of water resources after the release is determined. The target nutrient gap is calculated based on the amount of water resources after the release, and the amount of water resources allocated is calculated.

[0168] The beneficial effects of this application include: 1. Rationally utilize the nutrients in wetland water resources. Based on the analysis and regional division of nutrients in wetland water resources, rationally call for nutrients in wetland water resources, and analyze the target nutrient gap in rice fields, so as to input wetland water from the corresponding areas in wetland water resources, so as to achieve the purpose of fully utilizing the nutrients in wetland water resources.

[0169] 2. Weather factors are introduced. By obtaining the predicted precipitation and analyzing the impact of the predicted precipitation on the concentration of nutrients in the rice fields, the new nutrient concentration in the rice fields can be determined when precipitation occurs or in the predicted results of precipitation. Then, water resources in the relevant areas are continuously drawn from the wetland water resource system to replenish the nutrients in the rice fields, thus achieving all-weather nutrient filling of the rice fields.

[0170] 3. Accurately determine the nutrients in the rice fields. By setting sampling points in the rice fields, determine the nutrient concentration and the total nutrient content, and at the same time determine the nutrient gap of rice in different growth cycles. Based on the gap, the water resources of the rice fields and wetlands are allocated to ensure that the concentration of nutrients in the rice fields is the same as the growth requirements of rice in different rice growth cycles.

[0171] A person of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to computer program instructions, and the aforementioned computer program can be stored in a non-volatile storage medium. When the computer program is executed, it executes the steps of the above method embodiments. Alternatively, if the above-mentioned integrated unit of the present invention is implemented in the form of a software function 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 embodiment of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a non-volatile storage medium and includes a number of instructions for 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 each embodiment of the present invention.

[0172] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rice field-wetland water resources allocation method, characterized in that: The preparation method comprises: Obtain the nutrient concentrations at different sampling points in the rice field, and obtain the average concentration of all nutrients in the rice field to obtain the existing nutrient concentration in the rice field; Based on the required concentration of nutrients in the rice growth stage, the target nutrient gap of the rice field is obtained; Obtain the nutrient concentrations at different sampling points in the wetland water resources and obtain the average nutrient concentrations in different areas of the wetland; Based on the target nutrient gap of the rice field, the target wetland area for supplying water to the rice field is obtained, and the amount of water resources input from the wetland water resources to the rice field is obtained to obtain the water volume of the rice field; Obtain the predicted precipitation, obtain the nutrient concentration of the rice field area after precipitation, and obtain the nutrient concentration of the rice field precipitation; Based on the nutrient concentration of rice field precipitation, the amount of wetland water resources input from wetland water resources to rice field water resources is obtained.

2. The rice field-wetland water resources allocation method according to claim 1, characterized in that: The step of obtaining the nutrient concentrations at different sampling points in the rice field and obtaining the mean value of all nutrient concentrations in the rice field to obtain the existing nutrient content in the rice field includes: Setting sampling points in the rice field area and obtaining the existing nutrient concentrations in the rice field at the sampling points; Based on the existing nutrient concentrations in the paddy fields at the sampling points, obtaining the mean nutrient concentrations in the paddy fields at the sampling points; The water level height and the area of ​​the rice field are obtained, and based on the average concentration of the existing nutrients in the rice field, the existing nutrient content of all the rice fields is obtained.

3. The rice field-wetland water resources allocation method according to claim 1, characterized in that: The method of obtaining the target nutrient gap of the rice field based on the required nutrient concentration of the rice during the growth stage includes: Based on the demand for nutrients during the growth stage of rice, a nutrient requirement concentration table for rice throughout its life cycle is established to obtain a rice nutrient requirement concentration table; Based on the rice nutrient requirement concentration table, obtaining the staged target nutrient requirement of the rice field; Based on the required concentration of the target nutrients in the rice field at each stage, the target nutrient gap in the rice field is obtained.

4. The rice field-wetland water resources allocation method according to claim 3, characterized in that: The step of obtaining the target nutrient gap of the rice field based on the required concentration of the target nutrient of the rice field at the stage includes: The area and water level of each rice field are obtained respectively, the water volume of each rice field is obtained, and the corresponding relationship between the water volume of each rice field and the rice field number is established; Based on the water volume of the rice field, the target nutrient mass of the rice field at different stages corresponding to the rice field numbers is obtained. The determination equation of the target nutrient mass of the rice field at different stages is: ； in, It indicates the target nutrient quality of rice fields at different stages; S Indicates the area of ​​rice fields; represents the mean water level height of the rice field; Indicates the stage-by-stage nutrient requirement concentration; Based on the existing nutrient content of the rice field, the target nutrient gap of the rice field is obtained, and the determination equation of the target nutrient gap of the rice field is: ； in, It indicates the target nutrient gap of rice fields; It indicates the total target nutrients in rice fields at certain stages; S Indicates the area of ​​rice fields; represents the mean water level height of the rice field; Indicates the average concentration of nutrients in rice fields.

5. The rice field-wetland water resources allocation method according to claim 1, characterized in that: The method of obtaining the nutrient concentrations at different sampling points in the wetland water resources and obtaining the average nutrient concentrations in different areas of the wetland includes: Sampling points are set in the wetland water resource area to obtain wetland sampling points and obtain the concentrations of all wetland nutrients obtained at the wetland sampling points; Based on the concentrations of all wetland nutrients obtained at the wetland sampling points, the concentrations of different types of nutrients in the wetland water resources are obtained to obtain the regional nutrient concentrations; Based on the nutrient concentration in the region, the difference between the nutrient concentration at all sampling points in the wetland water resources and the nutrient concentration in the region is obtained to obtain the deviation of the nutrient concentration at the sampling point; Acquire the sampling point where the nutrient concentration deviation of the sampling point is lower than the nutrient concentration deviation of the preset sampling point to obtain an edge sampling point; Adjacent edge sampling points are connected to form an area of ​​average nutrient concentration of wetland water resources, and the average nutrient concentration of different areas of the wetland is obtained.

6. The rice field-wetland water resources allocation method according to claim 5, characterized in that: The concentration of all wetland nutrients obtained based on the wetland sampling points is used to obtain the concentration of different types of nutrients in the wetland water resources to obtain the regional nutrient concentration, including: Based on the concentrations of all nutrients obtained at the wetland sampling points, obtaining the wetland nutrient concentration; Based on the wetland nutrient concentration, obtaining the wetland nutrient with the highest wetland nutrient concentration to obtain the dominant wetland nutrient; Setting the area covered by the wetland sampling points with the same dominant wetland nutrients as the coverage area of ​​the dominant wetland nutrients; The average concentration of all the wetland nutrients in the coverage area of ​​all the dominant wetland nutrients is obtained to obtain the regional wetland nutrient concentration.

7. The rice field-wetland water resources allocation method according to claim 1, characterized in that: The method of obtaining a target wetland area for supplying water to the rice field based on the target nutrient gap of the rice field, and obtaining the amount of water resources input from the wetland water resources to the rice field to obtain the amount of water in the rice field includes: Obtain the target nutrient gap of rice fields to obtain the demand for different nutrients in rice fields; Based on the demand of the paddy field for different nutrients, the amount of water in the paddy field is obtained. The equation for determining the amount of water in the paddy field is: ； in, Preprocessing parameters representing the amount of water input to rice fields from the coverage area of ​​dominant wetland nutrients; Indicates different target nutrient gaps in the target nutrient gap of rice fields; Indicates the first part of the target nutrient gap in rice fields p The target nutrient gap is The corresponding value in ; represents the concentration of regional wetland nutrients; Indicates m The amount of water input to rice fields from the area covered by dominant wetland nutrients; Indicates m The proportion of water resources input to rice fields from the area covered by dominant wetland nutrients; Indicates m The target nutrient gap in rice fields is Any value in ; Indicates p The target nutrient concentration for the area covered by the dominant wetland nutrient is The corresponding value in ; m An index of the area covered by dominant wetland nutrients; n Indicates the total amount of coverage area index of dominant wetland nutrients; p The target nutrient index representing the target nutrient gap in the rice field; q The total amount of target nutrient index representing the target nutrient gap in rice fields.

8. The rice field-wetland water resources allocation method according to claim 7, characterized in that: Also includes: Comparing the nutrient concentration in the rice field with the nutrient concentration required for the rice at the growth stage, and if the nutrient concentration in the rice field is higher than the target nutrient requirement of the rice field at the stage, obtaining the adjusted amount of the nutrient concentration; Based on the adjusted amount of the nutrient concentration, the water resource allocation amount is obtained, and the determination equation of the water resource allocation amount is: ； in, represents the amount of water resources allocated, indicating the amount of water resources allocated from rice fields to wetlands; represents the nutrient concentration within the covered area of ​​non-dominant wetland nutrients; Based on the water resource allocation amount, an equal amount of water resource allocation from the wetland to the rice field is obtained.

9. The rice field-wetland water resources allocation method according to claim 1, characterized in that: The method of obtaining the predicted precipitation, obtaining the nutrient concentration of the paddy field area after the precipitation, and obtaining the nutrient concentration of the paddy field precipitation includes: Obtaining the predicted precipitation in the area where the rice field is located, and obtaining the water level height of the rice field caused by the predicted precipitation, to obtain the water level height of the rice field after precipitation; Based on the water level height of the paddy field after the precipitation and the area of ​​the paddy field, obtaining the concentration of nutrient substances in the paddy field precipitation; The nutrient concentration of the wetland after precipitation is obtained, and the dominant area of ​​the dominant wetland nutrients after precipitation is obtained.

10. The rice field-wetland water resources allocation method according to any one of claims 1 to 9, characterized in that: The method of obtaining the amount of wetland water resources input from wetland water resources to paddy field water resources based on the concentration of nutrient substances in rice field precipitation includes: Based on the nutrient concentration of the rice field precipitation, obtaining the target nutrient gap of the rice field after precipitation or the adjusted amount of the nutrient concentration; Based on the target nutrient gap of the rice field after the precipitation, the amount of wetland water resources input to the rice field after the precipitation from the coverage area of ​​the different dominant wetland nutrients after the precipitation is obtained, or, based on the adjusted amount of the nutrient concentration, the amount of water resources allocated after the precipitation is obtained, and water resources are allocated between the rice field and the wetland.

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