Saline-alkali area farmland crop irrigation method, device and system and electronic equipment

Abstract

The invention provides a saline-alkali area farmland crop irrigation method, device and system and electronic equipment, and relates to the technical field of smart agriculture, the method comprises the following steps: on the basis of an actual value and a target value of soil salt reserve of a target saline-alkali area farmland, determining that the target saline-alkali area farmland needs to be subjected to crop irrigation; and based on the environmental data in the target saline-alkali area farmland, obtaining the irrigation amount of the target saline-alkali area farmland, and then performing crop irrigation on the target saline-alkali area farmland based on the irrigation amount. According to the saline-alkali area farmland crop irrigation method, device and system and the electronic equipment provided by the invention, the target saline-alkali area farmland can be irrigated more scientifically and more reasonably based on the soil salt reserves of the target saline-alkali area farmland, so that on-demand supply of crop moisture in the target saline-alkali area farmland is met, and the irrigation efficiency of the target saline-alkali area farmland is improved. The relative stability of the salt concentration in the soil can be ensured, and the problems of salt stress and the like caused by salt migration in the production process of farmland crops in the saline-alkali area are effectively solved.

Description

Technical Field

[0001] The present invention relates to the field of smart agricultural technology, and in particular to a method, device, system and electronic equipment for irrigating farmland crops in saline-alkali areas. Background Art

[0002] Soil salinization refers to the process in which salt from the bottom of the soil accumulates to the surface of the soil as water moves to form saline soil. Soil salinization causes many kinds of harm to human activities, including affecting the physical and chemical properties of the soil, causing adverse effects on engineering facilities and land use, inhibiting plant growth, and reducing crop yields and quality. Reducing the migration and accumulation of deep salt to the surface soil during crop growth, and maintaining the relative stability of root layer salt, are key factors in reducing salt stress on crops in saline-alkali areas and promoting healthy crop growth.

[0003] However, unreasonable irrigation of farmland in saline-alkali areas can easily cause deep salt to migrate and accumulate in the surface soil, leading to secondary salinization in saline-alkali areas, further aggravating soil salinization in saline-alkali areas, causing crop yield reduction and affecting production efficiency. Therefore, scientific and reasonable irrigation of crops in saline-alkali areas is of great significance for increasing crop yields in saline-alkali areas, improving soil quality in saline-alkali areas, protecting the ecological environment and promoting sustainable agricultural development.

[0004] In the related art, the traditional irrigation method for farmland crops in saline-alkali areas mainly adopts the soil moisture sensor method, the crop evaporation model calculation method, the water surface evaporation method and other technologies to achieve the timely supply of crop water and reduce the risk of secondary salinization caused by excessive irrigation. However, the above-mentioned traditional irrigation method for farmland crops in saline-alkali areas cannot effectively control the migration and accumulation of soil salt in saline-alkali farmland to the surface soil, and reduce the large fluctuations in root layer soil salt. Therefore, how to irrigate farmland crops in saline-alkali areas more reasonably and scientifically, so as to more effectively control the migration and accumulation of soil salt in saline-alkali farmland to the surface soil, is a technical problem that needs to be solved urgently in this field. Summary of the invention

[0005] The present invention provides a method, device, system and electronic equipment for irrigating crops in saline-alkali areas, which are used to solve the defects of the traditional method for irrigating crops in saline-alkali areas in the prior art and can effectively control the migration and accumulation of soil salt in saline-alkali areas to the surface soil, so as to realize more reasonable and scientific irrigation of crops in saline-alkali areas, thereby more effectively controlling the migration and accumulation of soil salt in saline-alkali areas to the surface soil.

[0006] The invention provides a method for irrigating crops in saline-alkali areas, comprising the following steps.

[0007] Get the current irrigation cycle of the target saline-alkali area farmland. The actual value of the soil salt reserve of the target saline-alkali area farmland at a time node, the first time node in the current irrigation cycle is the starting time of the current irrigation cycle, and the interval between any two adjacent time nodes in the current irrigation cycle is a first preset time length, Indicates a positive integer with a starting value of 2; Based on the In the case where it is determined that the target crop planted in the target saline-alkali farmland needs to be irrigated based on the actual value of the soil salt reserve of the target saline-alkali farmland at the first time point and the target value of the soil salt reserve of the target saline-alkali farmland, the target crop planted in the target saline-alkali farmland needs to be irrigated based on the first time point. The environmental data of the target saline-alkali farmland in the time period corresponding to the time node is obtained. The irrigation volume of the target saline-alkali area farmland at the time point, The time period corresponding to the time node is The time node is related to the During the period between the time nodes, the target value of the soil salt reserve of the target saline-alkali farmland is obtained based on the basic parameters of each layer of soil in the target saline-alkali farmland, wherein the basic parameters include soil bulk density and soil depth; Based on the The target crops planted in the target saline-alkali farmland are irrigated according to the irrigation amount of the target saline-alkali farmland at each time point. Increase by 1, return to the current irrigation cycle of the target saline-alkali area farmland. Steps to calculate the actual value of soil salt reserves in the target saline-alkali area farmland at each time node.

[0008] According to a method for irrigating crops in saline-alkali area farmland provided by the present invention, the target value of soil salt reserve of the target saline-alkali area farmland is obtained based on the following steps: Obtaining the soil conductivity value of each layer of soil in the target saline-alkali farmland after being corrected by standard temperature before the target crop is planted in the target saline-alkali farmland; Based on the soil conductivity value of each layer of soil in the target saline-alkali farmland corrected by standard temperature before the target crop is planted in the target saline-alkali farmland, obtaining the soil salt content of each layer of soil in the target saline-alkali farmland before the target crop is planted in the target saline-alkali farmland; Calculate the cumulative salt content of the target saline-alkali farmland before the target crop is planted in the target saline-alkali farmland based on the soil salt content of each layer of soil in the target saline-alkali farmland and the basic parameters of each layer of soil in the target saline-alkali farmland before the target crop is planted in the target saline-alkali farmland; Based on the cumulative salt content of the target saline-alkali farmland before the target crop is planted in the target saline-alkali farmland, the first The target value of soil salt reserves in the target saline-alkali area farmland at the time node.

[0009] According to a method for irrigating crops in saline-alkali areas provided by the present invention, the method is based on the The environmental data of the target saline-alkali farmland in the time period corresponding to the time node is obtained. The irrigation volume of the target saline-alkali area farmland at each time point includes: Based on the The average daily wind speed at the target height of the target saline-alkali area farmland, the average daily minimum relative humidity and the average plant height of the target crop in the period corresponding to the time node are calculated. The crop coefficient correction value corresponding to each time node; Based on the The crop coefficient correction value corresponding to the time node and the The reference crop evapotranspiration of the target saline-alkali area farmland at the time node is calculated. The irrigation volume of the target saline-alkali area farmland at each time point.

[0010] According to a method for irrigating crops in saline-alkali areas provided by the present invention, based on the The actual value of the soil salt reserve of the target saline-alkali farmland at a time point and the target value of the soil salt reserve of the target saline-alkali farmland are used to determine whether it is necessary to irrigate the target crops planted in the target saline-alkali farmland, including: In the said When the actual value of the soil salt reserve of the target saline-alkali farmland at a time point is greater than the product of the target value of the soil salt reserve of the target saline-alkali farmland and the salt target coefficient, it is determined that crop irrigation is required for the target crops planted in the target saline-alkali farmland.

[0011] According to a method for irrigating crops in saline-alkali area farmland provided by the present invention, the first The actual value of soil salt reserves in the target saline-alkali area farmland at each time point, including: Get the The conductivity value of the soil solution of each layer of soil in the target saline-alkali area farmland at each time point; Based on the The soil solution conductivity value of each layer of soil in the target saline-alkali farmland at the time node and the basic parameters of each layer of soil in the target saline-alkali farmland are calculated. The actual value of soil salt reserves in the target saline-alkali area farmland at each time node.

[0012] According to a method for irrigating crops in saline-alkali area farmland provided by the present invention, the method of obtaining the first Before the actual value of the soil salt reserve of the target saline-alkali area farmland at a time node, the method further includes: Determining a target soil depth corresponding to the target saline-alkali farmland based on the type of target crops planted in the target saline-alkali farmland; Based on the target soil depth, the soil in the target saline-alkali area farmland is divided into a target number of layers; Obtain the basic parameters of each layer of soil in the target saline-alkali area farmland.

[0013] According to a method for irrigating crops in saline-alkali area farmland provided by the present invention, the method of obtaining the first After determining the actual value of soil salt reserves of the target saline-alkali area farmland at a time node, the method further comprises: Based on the The actual value of the soil salt reserve of the target saline-alkali farmland at a time point and the target value of the soil salt reserve of the target saline-alkali farmland are used to determine that there is no need to irrigate the target crops planted in the target saline-alkali farmland. Increase by 1, return to the current irrigation cycle of the target saline-alkali area farmland. Steps to calculate the actual value of soil salt reserves in the target saline-alkali area farmland at each time node.

[0014] The present invention also provides a saline-alkali area farmland crop irrigation device, comprising the following modules: The data acquisition module is used to obtain the current irrigation cycle of the target saline-alkali area farmland. The actual value of the soil salt reserve of the target saline-alkali area farmland at a time node, the first time node in the current irrigation cycle is the starting time of the current irrigation cycle, and the interval between any two adjacent time nodes in the current irrigation cycle is a first preset time length, Indicates a positive integer with a starting value of 2; A data calculation module is used to calculate the In the case where it is determined that the target crop planted in the target saline-alkali farmland needs to be irrigated based on the actual value of the soil salt reserve of the target saline-alkali farmland at the first time point and the target value of the soil salt reserve of the target saline-alkali farmland, the target crop planted in the target saline-alkali farmland needs to be irrigated based on the first time point. The environmental data of the target saline-alkali farmland in the time period corresponding to the time node is obtained. The irrigation volume of the target saline-alkali area farmland at the time point, The time period corresponding to the time node is The time node is related to the During the period between the time nodes, the target value of the soil salt reserve of the target saline-alkali farmland is obtained based on the basic parameters of each layer of soil in the target saline-alkali farmland, wherein the basic parameters include soil bulk density and soil depth; A loop control module is used to The target crops planted in the target saline-alkali farmland are irrigated according to the irrigation amount of the target saline-alkali farmland at each time point. Increase by 1, return to the current irrigation cycle of the target saline-alkali area farmland. Steps to calculate the actual value of soil salt reserves in the target saline-alkali area farmland at each time node.

[0015] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, any of the above-mentioned methods for irrigating farmland crops in saline-alkali areas is implemented.

[0016] The present invention also provides a saline-alkali area farmland crop irrigation system, comprising: the electronic device as described above, a profile soil salinity testing subsystem, an environmental information monitoring subsystem and an irrigation control subsystem; the electronic device is electrically connected to the profile soil salinity testing subsystem, the environmental information monitoring subsystem and the irrigation control subsystem respectively; The profile soil salinity test subsystem is used to obtain the first The actual value of the soil salt reserve of the target saline-alkali farmland at the time node, and the obtained value of the first irrigation cycle of the target saline-alkali farmland in the current irrigation cycle The actual value of the soil salt reserve of the target saline-alkali area farmland at a time node is sent to the electronic device; The environmental information monitoring subsystem is used to obtain the The environmental data of the target saline-alkali farmland in the period corresponding to the time node, and the obtained The environmental data of the farmland in the target saline-alkali area during the time period corresponding to the time node is sent to the electronic device; The irrigation control subsystem is used to control the irrigation control subsystem based on the first The target saline-alkali area farmland is irrigated at a certain time point, and the irrigation equipment is controlled to irrigate the target crops planted in the target saline-alkali area farmland.

[0017] The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the method for irrigating farmland crops in saline-alkali areas as described in any one of the above methods is implemented.

[0018] The present invention also provides a computer program product, comprising a computer program, which, when executed by a processor, implements any of the above-mentioned methods for irrigating farmland crops in saline-alkali areas.

[0019] The method, device, system and electronic device for irrigating crops in saline-alkali area farmland provided by the present invention obtain the first irrigation cycle of the target saline-alkali area farmland. The actual value of soil salt reserves in the target saline-alkali farmland at the time node, as well as the basic parameters of each layer of soil in the target saline-alkali farmland, are obtained. After the target value of soil salt storage in saline-alkali area farmland is set at the target time node, based on the The actual value and target value of soil salt reserves in the target saline-alkali farmland at the time node are used to determine the need for crop irrigation for the target crops planted in the target saline-alkali farmland. The environmental data of the target saline-alkali farmland in the period corresponding to the time node is obtained. The irrigation volume of farmland in the saline-alkali area at the target time node is then calculated based on the The irrigation volume of farmland in the target saline-alkali area at the time node is After the time node, within the second preset time period, the target crops planted in the target saline-alkali area farmland are irrigated. Increase by 1, return to the current irrigation cycle of the target saline-alkali farmland The steps of calculating the actual value of the soil salt reserves of the target saline-alkali farmland at each time node can carry out more scientific and reasonable irrigation for the target saline-alkali farmland based on the soil salt reserves of the target saline-alkali farmland, which can not only meet the on-demand supply of crop water in the target saline-alkali farmland, but also ensure the relative stability of the salt concentration in the soil, and effectively solve the problems such as salt stress caused by salt migration in the process of crop production in the saline-alkali farmland, which is helpful to achieve water saving, salt stabilization and production promotion in the saline-alkali farmland, and can provide technical support for promoting sustainable production and high-quality development of saline-alkali farmland. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 The present invention is a schematic diagram of the process of irrigating crops in saline-alkali areas.

[0022] Figure 2 It is a schematic diagram of the structure of the saline-alkali area farmland crop irrigation device provided by the present invention.

[0023] Figure 3 It is a structural schematic diagram of the electronic device provided by the present invention.

[0024] Figure 4 It is a structural schematic diagram of the saline-alkali area farmland crop irrigation system provided by the present invention.

[0025] Figure 5 It is a structural schematic diagram of a cross-section soil salinity testing subsystem in a saline-alkali region farmland crop irrigation system provided by the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the description of the present application, the terms "first", "second", etc. are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually a class, and the number of objects is not limited. For example, the first object can be one or more. In addition, in the description of the present application, "and / or" represents at least one of the connected objects, and the character " / " generally represents that the front and back associated objects are in an "or" relationship.

[0029] It should be noted that unreasonable irrigation of farmland in saline-alkali areas can easily cause deep salt to migrate and accumulate to the surface soil and cause large fluctuations in the salt content of the root layer. When the salt accumulation in the surface or root layer of the soil is too high, it will seriously reduce the soil quality, lead to crop yield reduction, and even cause the imbalance of the ecosystem. Therefore, reducing the migration and accumulation of deep salt to the surface soil during crop growth and maintaining the relative stability of root layer salt are key factors in reducing salt stress of crops in saline-alkali areas and promoting healthy growth of crops.

[0030] In the related technologies, the traditional irrigation methods for farmland crops in saline-alkali areas mainly use the soil moisture sensor method, the crop evaporation model calculation method, the water surface evaporation method and other technologies to achieve the on-demand supply of crop moisture and reduce the secondary salinization problem caused by unreasonable irrigation. However, the above traditional irrigation methods for farmland crops in saline-alkali areas all use moisture as the control factor and the irrigation amount as the main control parameter. The decision on the timing of irrigation is also based on the soil moisture content or the cumulative irrigation amount, and does not consider factors such as crop type, soil depth, and soil salt content. As a result, the above traditional irrigation methods for farmland crops in saline-alkali areas cannot effectively control the migration and accumulation of soil salt in farmland in saline-alkali areas to the surface soil.

[0031] In the related art, the traditional method of irrigation for crops in saline-alkali areas can also reduce the salt content of the surface soil of saline-alkali areas by flooding with water to press and wash salt from saline-alkali areas. However, the above traditional method of irrigation for crops in saline-alkali areas consumes a large amount of fresh water resources, which not only easily causes the rise of groundwater levels, but also may further increase the risk of secondary salinization of the soil, leading to a series of ecological and environmental problems.

[0032] Therefore, how to irrigate crops in saline-alkali areas more reasonably and scientifically based on the soil salinity of farmland in saline-alkali areas, so as to more effectively control the migration and accumulation of soil salt in saline-alkali areas to the surface soil, reduce the impact of irrigation water on soil salinity, and maintain the relative stability of soil salinity in the root zone, is an important technical guarantee for achieving sustainable production of crops in saline-alkali areas.

[0033] Combine the following Figure 1 The invention describes a method for irrigating crops in saline-alkali areas.

[0034] Figure 1 The schematic diagram of the process of the method for irrigating crops in saline-alkali areas provided by the present invention is as follows: Figure 1 As shown, the method includes the following steps: Step 101, obtaining the first irrigation cycle of the target saline-alkali area farmland The actual value of the soil salt reserve of the target saline-alkali area farmland at a time node, the first time node in the current irrigation cycle is the starting time of the current irrigation cycle, and the interval between any two adjacent time nodes in the current irrigation cycle is a first preset time length, Indicates a positive integer starting at 2.

[0035] It should be noted that the embodiment of the present invention is implemented by a saline-alkali area farmland crop irrigation device. The saline-alkali area farmland crop irrigation device can be configured in electronic devices such as computers or servers.

[0036] Specifically, the target saline-alkali farmland is the crop irrigation object of the saline-alkali farmland crop irrigation method provided by the present invention. The saline-alkali farmland refers to the farmland located in the saline-alkali area, and the total salt content of the soil in the saline-alkali farmland is usually greater than 0.1%.

[0037] It is understandable that the target saline-alkali farmland can be determined based on actual needs. In the embodiments of the present invention, the target saline-alkali farmland is not specifically limited.

[0038] It should be noted that the duration of the irrigation cycle of the target saline-alkali farmland can be determined according to factors such as the type of crops planted in the target saline-alkali farmland, the geographical location of the target saline-alkali farmland, and climatic conditions. For example, the irrigation cycle of the target saline-alkali farmland can be 30 days or 45 days. In the embodiment of the present invention, the duration of the irrigation cycle of the target saline-alkali farmland and the specific value of the first preset duration are not specifically limited.

[0039] In the embodiment of the present invention, the first preset duration can be determined based on the growth period of the target crop, and then multiple time nodes can be determined within the current irrigation cycle of the target saline-alkali area farmland based on the first preset duration. For example, when the target crop is in the seedling stage, the value range of the first preset duration can be 10 to 20 days; when the target crop is in the vigorous stage, the value range of the first preset duration can be 5 to 10 days; when the target crop is in the mature stage, the value of the first preset duration can be 7 to 14 days.

[0040] It can be understood that the end time of the previous irrigation cycle of the target saline-alkali area farmland is the start time of the current irrigation cycle of the target saline-alkali area farmland.

[0041] Accordingly, when the current irrigation cycle of the target saline-alkali farmland is determined, it can be determined that the current moment is the first irrigation cycle of the target saline-alkali farmland. Whether the preset time has passed after the time node; Represents a positive integer with a starting value of 2; the first time node in the current irrigation cycle of the target saline-alkali area farmland is the starting time of the current irrigation cycle of the target saline-alkali area farmland.

[0042] Determine the current irrigation cycle of the target saline-alkali area farmland at the current moment. If the preset time has passed after a time node, it can be determined that the current time is the first time in the current irrigation cycle of the target saline-alkali area farmland. The time node can be obtained through actual measurement, mathematical statistics and numerical calculation. The actual value of the soil salt reserve of the target saline-alkali farmland at the time node can also be obtained based on the basic parameters of the soil in the target saline-alkali farmland through numerical calculation, mathematical statistics or deep learning technology. The target value of soil salt reserves in farmland in saline-alkali area at a target time node.

[0043] It should be noted that the soil salt reserve of saline-alkali farmland is used to describe the total amount of salt contained in the soil of saline-alkali farmland. When the soil salt reserve of saline-alkali farmland is the target value of the soil salt reserve of saline-alkali farmland, it is most conducive to the growth of crops planted in the saline-alkali farmland.

[0044] As an optional embodiment, based on the basic parameters of each layer of soil in the target saline-alkali area farmland, the first Before determining the target value of soil salt reserves of the target saline-alkali farmland at a time node, the method further includes: determining a target soil depth corresponding to the target saline-alkali farmland based on the type of target crops planted in the target saline-alkali farmland.

[0045] Specifically, in the embodiment of the present invention, based on the types of crops planted in the target saline-alkali farmland, the theoretical depth that the roots of the above crops can reach during the growth period can be determined as the target soil depth corresponding to the target saline-alkali farmland.

[0046] For example, if the crops planted in the target saline-alkali farmland are shallow-rooted crops, the theoretical root depth that the crops can reach during growth is usually 100 cm, and accordingly, the target soil depth corresponding to the target saline-alkali farmland is 100 cm. If the crops planted in the target saline-alkali farmland are deep-rooted crops, the theoretical root depth that the crops can reach during growth can reach 200 cm, and accordingly, the target soil depth corresponding to the target saline-alkali farmland is 200 cm.

[0047] Preferably, the target soil depth for wheat planted in saline-alkali farmland is 160 cm, the target soil depth for sunflower planted in saline-alkali farmland is 200 cm, and the target soil depth for sugar beet planted in saline-alkali farmland is 100 cm. The basic soil parameter is soil bulk density.

[0048] Based on the target soil depth, the soil in the target saline-alkali area farmland is divided into a target number of layers.

[0049] Specifically, in order to improve the accuracy of crop irrigation in the target saline-alkali area farmland, in an embodiment of the present invention, the soil in the target saline-alkali area farmland can be divided into multiple layers based on the target soil depth, so that based on the basic parameters of each layer of soil in the target saline-alkali area farmland, it can be judged whether crop irrigation is needed for the target crops planted in the target saline-alkali area farmland.

[0050] It should be noted that in the embodiment of the present invention, the depth of each layer of soil in the target saline-alkali farmland can be determined based on prior knowledge and / or actual conditions (for example, the target soil depth corresponding to the target saline-alkali farmland). For example, the depth of each soil layer in the target saline-alkali area farmland It can be 20cm.

[0051] Accordingly, in the embodiment of the present invention, the target soil depth corresponding to the target saline-alkali farmland and the predefined depth of each soil layer in the target saline-alkali farmland can be used to calculate the soil depth of each soil layer in the target saline-alkali farmland. , determine the target number , and then the soil in the target saline-alkali area farmland can be divided into layer.

[0052] Preferably, the soil bulk density of each layer of soil in the target saline-alkali area farmland in the embodiment of the present invention can be measured by the ring knife method.

[0053] Obtain the basic parameters of each layer of soil in the target saline-alkali area farmland.

[0054] Specifically, the soil in the target saline-alkali area farmland is divided into After the first layer is formed, the first Soil bulk density of soil layer and the soil depth of each layer , as the first Basic parameters of the soil layer. Among them, .

[0055] It should be noted that the first After obtaining the basic parameters of the soil layer, there is no need to obtain them again during the current irrigation cycle.

[0056] As an optional embodiment, the target value of the soil salt reserve of the target saline-alkali farmland is obtained based on the following steps: obtaining the soil conductivity value of each layer of soil in the target saline-alkali farmland after standard temperature correction before the target crop is planted in the target saline-alkali farmland. In the embodiment of the present invention, the first layer of soil in the target saline-alkali area farmland can be The soil extract test of the first layer of soil was carried out to obtain the soil extract of the first layer of soil in the target saline-alkali area before the target crops were planted in the target saline-alkali area. Soil conductivity value of the soil layer .

[0057] Among them, soil electrical conductivity (EC) is an indicator for measuring water-soluble salts in the soil. It reflects the total amount of salt ions in the soil and is an important factor in determining whether salt ions in the soil restrict crop growth.

[0058] Preferably, in the embodiment of the present invention, the first time point of the target crop in the target saline-alkali farmland one day before the target crop is planted in the target saline-alkali farmland can be obtained. Soil conductivity value of the soil layer .

[0059] Preferably, the target crop is planted in the target saline-alkali farmland one day before the target crop is planted in the target saline-alkali farmland. Soil conductivity value of the soil layer It can be obtained by taking soil by drilling, sieving, mixing the water and soil ratio, and then testing with a conductivity meter.

[0060] Obtain the target crop in the target saline-alkali farmland before planting it in the target saline-alkali farmland Soil conductivity value of the soil layer After that, the target crops can be planted in the target saline-alkali farmland before the first Soil conductivity value of the soil layer Correction is performed to obtain the first Soil conductivity value of the layer of soil after standard temperature correction .

[0061] It should be noted that the soil conductivity value after standard temperature correction refers to the soil conductivity value of the above soil at the above standard temperature. Since soil conductivity is affected by temperature, the conductivity values ​​measured at different temperatures will be different. In order to compare and standardize the measurement results, it is usually necessary to correct the soil conductivity value to the standard temperature. Usually, the standard temperature is 25℃.

[0062] Temperature correction of soil conductivity is usually performed based on the linear relationship between conductivity and temperature.

[0063] Based on the soil electrical conductivity value of each layer of soil in the target saline-alkali farmland corrected by standard temperature before the target crops are planted in the target saline-alkali farmland, the soil salt content of each layer of soil in the target saline-alkali farmland before the target crops are planted in the target saline-alkali farmland is obtained.

[0064] Specifically, for the first The first layer of soil in the target saline-alkali farmland before the target crops are planted in the target saline-alkali farmland Soil conductivity value of the layer of soil after standard temperature correction The following formula can be used to calculate the target crop before it is planted in the target saline-alkali farmland. Soil salt content of the soil layer :

[0065] in, Indicates the conversion coefficient between soil salt content and soil conductivity corrected for standard temperature; The value of is determined based on the test data fitting.

[0066] Based on the soil salt content of each soil layer in the target saline-alkali farmland before the target crops are planted in the target saline-alkali farmland and the basic parameters of each soil layer in the target saline-alkali farmland, the cumulative salt content of the target saline-alkali farmland before the target crops are planted in the target saline-alkali farmland is calculated.

[0067] Specifically, the first target crop in the target saline-alkali farmland before the target crop is planted in the target saline-alkali farmland is obtained. Soil salt content of the soil layer Afterwards, the first Soil salt content of the soil layer and the first The basic parameters of the soil layer are used to calculate the cumulative salt content of the target saline-alkali farmland before the target crops are planted in the target saline-alkali farmland. :

[0068] Based on the cumulative salt content of the target saline-alkali farmland before the target crop was planted in the target saline-alkali farmland, calculate the The target value of soil salt reserves in farmland in saline-alkali area at a target time node.

[0069] Specifically, the cumulative salt content of the target saline-alkali farmland before the target crop is planted in the target saline-alkali farmland is calculated. After that, the target value of soil salt reserves in the target saline-alkali area farmland can be calculated by the following formula: :

[0070] in, Indicates the salt control coefficient; salt control coefficient The value of is determined according to the type of crop planted and prior knowledge. For example, when the crop planted is wheat, wheat has weak salt tolerance and the salt control coefficient is The value range is less than 0.1; when the crop planted is sunflower, sunflower has strong salt tolerance and the salt control coefficient The value range of can be 0.1 to 0.2.

[0071] Preferably, the salt control coefficient .

[0072] As an optional embodiment, the first irrigation cycle of the target saline-alkali area farmland is obtained. The actual value of soil salt reserves in the target saline-alkali area farmland at each time point, including: The conductivity value of soil solution in each soil layer in the target saline-alkali area farmland at each time node.

[0073] Based on The soil solution conductivity value of each layer of soil in the target saline-alkali area farmland and the basic parameters of each layer of soil in the target saline-alkali area farmland at the time node are calculated. The actual value of soil salt reserves in the target saline-alkali area farmland at each time node.

[0074] Specifically, for the first In order to obtain the soil salt content in real time and reduce the damage to the farmland soil structure and the impact on the growth of crops, the embodiment of the present invention can be carried out by The first The target time point is the farmland in the saline-alkali area. Soil solution conductivity value of the soil layer .

[0075] Among them, the profile soil solution is the liquid phase in the soil, mainly composed of water, soluble salts and nutrients. The profile soil solution test is an important part of soil physical and chemical analysis. It is used to determine the content and form of dissolved minerals, organic matter, trace elements, etc. in the soil, as well as to understand the soil solution's pH, conductivity and other physical and chemical properties. The test methods for profile soil solution testing mainly include: atomic electrode method, conductivity method and electrochemical method.

[0076] Based on The target time point is the farmland in the saline-alkali area. Soil solution conductivity value of the soil layer , can be calculated by the following formula The target time point is the farmland in the saline-alkali area. Soil salt content of the soil layer :

[0077] in, Indicates the conversion factor between soil salt content and soil solution conductivity; The value of is determined based on the test data fitting.

[0078] Get the The target time point is the farmland in the saline-alkali area. Soil salt content of the soil layer Afterwards, the first The actual value of soil salt storage in the target saline-alkali area farmland at each time point : .

[0079] It should be noted that, in the embodiment of the present invention, the first Soil conductivity value of the soil layer , calculate the target value of soil salt reserves in the target saline-alkali area farmland , before the target crops are planted in the target saline-alkali farmland, the soil salt content of the target saline-alkali farmland can be determined more accurately based on solid soil by taking soil, screening, sieving, and mixing the water-soil ratio, and taking soil before the target crops are planted in the target saline-alkali farmland will not affect the growth of the target crops and the planting soil in the target saline-alkali area.

[0080] Moreover, in the embodiment of the present invention, the first Soil conductivity value of the soil layer , calculate the target value of soil salt reserves in the target saline-alkali area farmland , it can avoid duplication of work, and conduct simultaneous testing with soil bulk density, reduce labor intensity and improve work efficiency.

[0081] In the embodiment of the present invention, when obtaining the The actual value of soil salt storage in the target saline-alkali area farmland at each time point When the soil solution is extracted in situ, it is used to obtain the The target time point is the farmland in the saline-alkali area. Soil solution conductivity value of the soil layer , it can realize the real-time detection of the soil solution conductivity value of any layer of soil in the target saline-alkali farmland, and will not destroy the soil structure in the target saline-alkali farmland or affect the growth of target crops.

[0082] In the embodiment of the present invention, the soil conductivity test method is used to obtain the first Soil conductivity value of the soil layer , the target value of soil salt reserves in the target saline-alkali area can be obtained more accurately , using soil solution determination method, obtain the The actual value of soil salt storage in the target saline-alkali area farmland at each time point , can timely grasp the salt dynamics of the target saline-alkali area farmland, so as to obtain the first The target time point is the farmland in the saline-alkali area. Soil solution conductivity value of the soil layer .

[0083] Step 102: Based on the In the case where it is determined that the target crop planted in the target saline-alkali farmland needs to be irrigated based on the actual value of the soil salt reserve of the target saline-alkali farmland at the first time point and the target value of the soil salt reserve of the target saline-alkali farmland, the target crop planted in the target saline-alkali farmland needs to be irrigated based on the first time point. The environmental data of the target saline-alkali farmland in the time period corresponding to the time node is obtained. The irrigation volume of the target saline-alkali area farmland at the time point, The time period corresponding to the time node is The time node is related to the During the period between the time nodes, the target value of the soil salt reserve of the target saline-alkali farmland is obtained based on the basic parameters of each layer of soil in the target saline-alkali farmland, and the basic parameters include soil bulk density and soil depth.

[0084] Specifically, obtain the The actual value of soil salt storage in the target saline-alkali area farmland at each time point and the target value of soil salt storage in the target saline-alkali area farmland Afterwards, based on The actual value of soil salt storage in the target saline-alkali area farmland at each time point and the target value of soil salt storage in the target saline-alkali area farmland , through numerical calculation, mathematical statistics or deep learning technology, it is determined whether crop irrigation is needed for the target crops planted in the farmland in the target saline-alkali area.

[0085] As an optional embodiment, based on The actual value of the soil salt reserve of the target saline-alkali farmland in the target saline-alkali zone and the target value of the soil salt reserve of the target saline-alkali farmland at the time node are used to determine whether it is necessary to irrigate the target crops planted in the target saline-alkali farmland, including: When the actual value of the soil salt reserve of the target saline-alkali zone farmland at a time node is greater than the product of the target value of the soil salt reserve of the target saline-alkali zone farmland and the salt target coefficient, it is determined that crop irrigation is required for the target crops planted in the target saline-alkali zone farmland. The salt target coefficient is a coefficient used to control the soil salt content within a preset range, and the salt target coefficient is determined based on the type of crop and the texture characteristics of the soil.

[0086] Specifically, in In the case of After a time node, irrigate the target crops planted in the farmland in the target saline-alkali area within a preset time period; In the case of Time nodes and There is no need to irrigate the target crops planted in the farmland in the target saline-alkali area between the time nodes.

[0087] Preferably, the salt target coefficient The value is not greater than 10%.

[0088] Based on the The actual value of soil salt storage in the target saline-alkali area farmland at each time point and the target value of soil salt storage in the target saline-alkali area farmland When it is determined that crop irrigation is required for the target crops planted in the target saline-alkali farmland, the irrigation amount of the target saline-alkali farmland can be obtained through numerical calculation, mathematical statistics or deep learning calculation based on the environmental data and historical irrigation data in the target saline-alkali farmland.

[0089] As an optional embodiment, based on The environmental data of the target saline-alkali farmland in the period corresponding to the time node is obtained. The irrigation volume of farmland in saline-alkali area at the target time node includes: The average daily wind speed at the target height of the target saline-alkali farmland, the average daily minimum relative humidity, and the average plant height of the crops planted in the target saline-alkali farmland during the period corresponding to the time node are calculated. The crop coefficient correction value corresponding to each time node.

[0090] Specifically, in the embodiment of the present invention, a sensor such as an anemometer can be used to obtain the first The average daily wind speed at the target height in the target saline-alkali area farmland during the period corresponding to the time node (m / s).

[0091] In the embodiment of the present invention, a sensor such as a hygrometer can also be used to obtain the first The average daily minimum relative humidity of farmland in the target saline-alkali area during the period corresponding to the time node (%).

[0092] In the embodiment of the present invention, a sensor such as a height sensor can also be used to obtain the first The average plant height of the target crop in the period corresponding to the time node (m).

[0093] Get the The average daily wind speed at the target height in the target saline-alkali area farmland during the period corresponding to the time node , the average value of daily minimum relative humidity and the average plant height of target crops planted in farmland in the target saline-alkali area Afterwards, the following formula can be used to calculate the The crop coefficient correction value corresponding to the time node :

[0094] in, Indicates the crop coefficient recommended by the Food and Agriculture Organization of the United Nations (FAO). The crop coefficient is used to describe the ratio of water requirement to possible evapotranspiration of crops at different development stages. The value of is the crop water requirement and reference water demand ratio; crop water requirement The value of can be obtained through experiments, referring to the water demand The value of can be calculated based on the local meteorological data using empirical formulas. For example, the value of The values ​​are 0.3, 1.0-1.15, and 0.35 respectively.

[0095] Based on The crop coefficient correction value corresponding to the time node and the The reference crop evapotranspiration of the target saline-alkali area farmland at the time node is calculated. Irrigation volume of farmland in saline-alkali area at target time node.

[0096] Specifically, no. The crop coefficient correction value corresponding to the time node , can be calculated by the following formula Irrigation volume of farmland in saline-alkali area at target time point :

[0097] in, Indicates Reference crop evapotranspiration of farmland in the target saline-alkali area at each time point; represents the salt elution coefficient; represents the irrigation water utilization coefficient. Reference crop evapotranspiration of target saline-alkali area farmland at each time point It can be calculated based on the PM formula recommended by FAO-56.

[0098] Salt elution coefficient , refers to the increase in irrigation volume corresponding to leaching salt below the soil depth (e.g. 100 cm depth). Salt leaching coefficient The value of is usually determined according to the crop type and prior knowledge.

[0099] Preferably, the salt elution coefficient The value range is 0.2 to 0.4.

[0100] Irrigation water utilization coefficient It refers to the ratio of the effective water volume irrigated into the field to the water volume introduced at the head of the canal, and can be used to reflect the leakage loss of canals at all levels in the irrigation area. The value of can be determined based on prior knowledge and / or actual conditions.

[0101] Preferably, the irrigation water utilization coefficient The value of is 0.9.

[0102] Step 103: Based on the The target crops planted in the target saline-alkali farmland are irrigated according to the irrigation amount of the target saline-alkali farmland at each time point. Increase by 1, return to the current irrigation cycle of the target saline-alkali area farmland. Steps to calculate the actual value of soil salt reserves in the target saline-alkali area farmland at each time node.

[0103] Specifically, obtain the Irrigation volume of farmland in saline-alkali area at target time point Afterwards, you can Within the second preset time period after the time node, the target crops planted in the target saline-alkali area farmland are irrigated, and the irrigation amount is Irrigation volume of farmland in saline-alkali area at target time point .

[0104] It should be noted that the second preset duration in the embodiment of the present invention may be determined based on prior knowledge and / or actual conditions, for example, the value range of the second preset duration may be 12 hours to 24 hours. The value of the second preset duration is not specifically limited in the embodiment of the present invention.

[0105] Based on Irrigation volume of farmland in saline-alkali area at target time point After irrigating the target crops planted in the target saline-alkali area, Increase by 1, return to the current irrigation cycle of the target saline-alkali farmland Steps to calculate the actual value of soil salt reserves in the target saline-alkali area farmland at each time node.

[0106] As an optional embodiment, the first irrigation cycle of the target saline-alkali area farmland is obtained. After determining the actual value of the soil salt reserve of the target saline-alkali area farmland at the time node, the method further comprises: The actual value of the soil salt reserve of the target saline-alkali farmland at the time node and the target value of the soil salt reserve of the target saline-alkali farmland are used to determine that there is no need to irrigate the target crops planted in the target saline-alkali farmland. Increase by 1, return to the current irrigation cycle of the target saline-alkali farmland Steps to calculate the actual value of soil salt reserves in the target saline-alkali area farmland at each time node.

[0107] The embodiment of the present invention obtains the first irrigation cycle of the target saline-alkali area farmland. The actual value of soil salt reserves in the target saline-alkali farmland at the time node, as well as the basic parameters of each layer of soil in the target saline-alkali farmland, are obtained. After the target value of soil salt storage in saline-alkali area farmland is set at the target time node, based on the The actual value of the soil salt reserve of the target saline-alkali farmland in the target saline-alkali area at the time node and the target value of the soil salt reserve of the target saline-alkali farmland are used to determine the need for crop irrigation for the target crops planted in the target saline-alkali farmland. The environmental data of the target saline-alkali farmland in the period corresponding to the time node is obtained. The irrigation volume of farmland in the saline-alkali area at the target time node is then calculated based on the The irrigation volume of farmland in the target saline-alkali area at the time node is After the time node, within the second preset time period, the target crops planted in the target saline-alkali area farmland are irrigated. Increase by 1, return to the current irrigation cycle of the target saline-alkali farmland The steps of calculating the actual value of the soil salt reserves of the target saline-alkali farmland at each time node can carry out more scientific and reasonable irrigation for the target saline-alkali farmland based on the soil salt reserves of the target saline-alkali farmland, which can not only meet the on-demand supply of crop water in the target saline-alkali farmland, but also ensure the relative stability of the salt concentration in the soil, and effectively solve the problems such as salt stress caused by salt migration in the process of crop production in the saline-alkali farmland, which is helpful to achieve water saving, salt stabilization and production promotion in the saline-alkali farmland, and can provide technical support for promoting sustainable production and high-quality development of saline-alkali farmland.

[0108] Figure 2 This is a schematic diagram of the structure of the saline-alkali area farmland crop irrigation device provided by the present invention. Figure 2 The saline-alkali area farmland crop irrigation device provided by the present invention is described. The saline-alkali area farmland crop irrigation device described below and the saline-alkali area farmland crop irrigation method provided by the present invention described above can be referred to each other. Figure 2 As shown, the device includes: a data acquisition module 201, a data calculation module 202 and a cycle control module 203.

[0109] The data acquisition module 201 is used to obtain the current irrigation cycle of the target saline-alkali area farmland. The actual value of the soil salt reserve of the target saline-alkali area farmland at each time node. The first time node in the current irrigation cycle is the starting time of the current irrigation cycle. The interval between any two adjacent time nodes in the current irrigation cycle is the first preset time length. Indicates a positive integer starting at 2.

[0110] The data calculation module 202 is used to calculate the The actual value of the soil salt reserve of the target saline-alkali farmland in the target saline-alkali area at the time node and the target value of the soil salt reserve of the target saline-alkali farmland are used to determine the need for crop irrigation for the target crops planted in the target saline-alkali farmland. The environmental data of the target saline-alkali farmland in the period corresponding to the time node is obtained. The irrigation volume of farmland in saline-alkali area at the target time node, The time period corresponding to the time node is The time node and During the period between the three time nodes, the target value of soil salt reserve in the target saline-alkali farmland is obtained based on the basic parameters of each layer of soil in the target saline-alkali farmland, including soil bulk density and soil depth.

[0111] The loop control module 203 is used to The irrigation amount of the target saline-alkali area farmland at each time point is used to irrigate the target crops planted in the target saline-alkali area farmland. Increase by 1, return to the current irrigation cycle of the target saline-alkali farmland Steps to calculate the actual value of soil salt reserves in the target saline-alkali area farmland at each time node.

[0112] Specifically, the data acquisition module 201, the data calculation module 202 and the cycle control module 203 are electrically connected.

[0113] The saline-alkali area farmland crop irrigation device of the embodiment of the present invention obtains the first The actual value of soil salt reserves in the target saline-alkali farmland at the time node, as well as the basic parameters of each layer of soil in the target saline-alkali farmland, are obtained. After the target value of soil salt storage in saline-alkali area farmland is set at the target time node, based on the The actual value of the soil salt reserve of the target saline-alkali farmland in the target saline-alkali area at the time node and the target value of the soil salt reserve of the target saline-alkali farmland are used to determine the need for crop irrigation for the target crops planted in the target saline-alkali farmland. The environmental data of the target saline-alkali farmland in the period corresponding to the time node is obtained. The irrigation volume of farmland in the saline-alkali area at the target time node is then calculated based on the The irrigation volume of farmland in the target saline-alkali area at the time node is After the time node, within the second preset time period, the target crops planted in the target saline-alkali area farmland are irrigated. Increase by 1, return to the current irrigation cycle of the target saline-alkali farmland The steps of calculating the actual value of the soil salt reserves of the target saline-alkali farmland at each time node can carry out more scientific and reasonable irrigation for the target saline-alkali farmland based on the soil salt reserves of the target saline-alkali farmland, which can not only meet the on-demand supply of crop water in the target saline-alkali farmland, but also ensure the relative stability of the salt concentration in the soil, and effectively solve the problems such as salt stress caused by salt migration in the process of crop production in the saline-alkali farmland, which is helpful to achieve water saving, salt stabilization and production promotion in the saline-alkali farmland, and can provide technical support for promoting sustainable production and high-quality development of saline-alkali farmland.

[0114] Figure 3 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 3As shown, the electronic device 3 may include: a processor 310, a communications interface 320, a memory 330 and a communication bus 340, wherein the processor 310, the communications interface 320 and the memory 330 communicate with each other via the communication bus 340. The processor 310 may call the logic instructions in the memory 330 to execute the method for irrigating crops in saline-alkali area farmland, the method comprising: obtaining the first irrigation cycle of the target saline-alkali area farmland; The actual value of the soil salt reserve of the target saline-alkali area farmland at each time node. The first time node in the current irrigation cycle is the starting time of the current irrigation cycle. The interval between any two adjacent time nodes in the current irrigation cycle is the first preset time length. Indicates a positive integer with a starting value of 2; based on The actual value of the soil salt reserve of the target saline-alkali farmland in the target saline-alkali area at the time node and the target value of the soil salt reserve of the target saline-alkali farmland are used to determine the need for crop irrigation for the target crops planted in the target saline-alkali farmland. The environmental data of the target saline-alkali farmland in the period corresponding to the time node is obtained. The irrigation volume of farmland in saline-alkali area at the target time node, The time period corresponding to the time node is The time node and During the period between the first and second time nodes, the target value of soil salt reserves in the target saline-alkali farmland is obtained based on the basic parameters of each layer of soil in the target saline-alkali farmland, including soil bulk density and soil depth; The irrigation amount of the target saline-alkali area farmland at each time point is used to irrigate the target crops planted in the target saline-alkali area farmland. Increase by 1, return to the current irrigation cycle of the target saline-alkali farmland Steps to calculate the actual value of soil salt reserves in the target saline-alkali area farmland at each time node.

[0115] In addition, the logic instructions in the above-mentioned memory 330 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0116] Figure 4 FIG. 1 is a schematic diagram of the structure of the saline-alkali area farmland crop irrigation system provided by the present invention. Figure 4 As shown, a saline-alkali area farmland crop irrigation system comprises: the electronic device 3 as described above, the profile soil salinity testing subsystem 1, the environmental information monitoring subsystem 2 and the irrigation control subsystem 4; the electronic device 3 is electrically connected to the profile soil salinity testing subsystem 1, the environmental information monitoring subsystem 2 and the irrigation control subsystem 4 respectively; The profile soil salinity test subsystem 1 is used to obtain the current irrigation cycle of the target saline-alkali area farmland. The actual value of soil salt reserves of the target saline-alkali farmland at the time node is obtained, and the first The actual value of the soil salt reserve of the target saline-alkali area farmland at each time node is sent to the electronic device 3; Environmental information monitoring subsystem 2 is used to obtain The environmental data of the farmland in the target saline-alkali area during the period corresponding to the time node, and the obtained The environmental data of the farmland in the target saline-alkali area during the period corresponding to each time node is sent to the electronic device 3; The irrigation control subsystem 4 is used to control the irrigation control subsystem 4 based on the first The irrigation amount of the target saline-alkali area farmland at each time node is controlled, and the irrigation equipment is controlled to irrigate the target crops planted in the target saline-alkali area.

[0117] Specifically, the profile soil salinity testing subsystem 1 can be used to detect the actual value of the soil salt reserves of the target saline-alkali farmland in real time, and determine the range of change in the soil salt content of the target saline-alkali farmland.

[0118] The environmental information monitoring subsystem 2 can be used to monitor in real time the meteorological information of the growth environment of the target crops planted in the farmland in the target saline-alkali area, including parameters such as solar radiation, air temperature, relative humidity and wind speed.

[0119] The irrigation control subsystem 4 performs irrigation control on the target saline-alkali area farmland crops according to the decision result of the electronic device 3 .

[0120] Figure 5 Schematic diagram of the structure of the soil salinity test subsystem in the saline-alkali area farmland crop irrigation system provided by the present invention. Figure 5 As shown, the profile soil salt testing subsystem 1 can be composed of a profile soil liquid extraction device 11, a liquid testing device 12, a gas buffer device 13 and a power system 14.

[0121] The profile soil liquid extraction device 11 is connected to the liquid testing device 12 via a first pipeline 15 .

[0122] Preferably, the number of the profile soil liquid extraction devices 11 on the same point profile is not less than 5.

[0123] The liquid testing device 12 is connected to the gas buffer device 13 via a second pipeline 18 .

[0124] Preferably, a conductivity sensor 16 is installed in the liquid testing device 12 for testing the conductivity value of the soil liquid.

[0125] Preferably, a liquid discharge port 17 is provided at the bottom of the liquid testing device 12 and is automatically controlled by a valve.

[0126] The gas buffer device 13 is connected to the power system 14 through the third pipeline 19. The gas buffer device 13 is used to buffer the gas pressure so that the solution in the soil layer can continuously and stably enter the liquid testing device 12; the power system 14 can provide vacuum pump force to put the entire pipeline in a negative pressure state, so that the liquid in the soil can automatically enter the liquid testing device 12 under the action of the pressure difference.

[0127] Optionally, the irrigation control subsystem 4 in the embodiment of the present invention may be composed of a head control system, a flow monitoring system, a field valve control system, a terminal irrigation system, and the like.

[0128] On the other hand, the present invention further provides a computer program product, the computer program product comprising a computer program, the computer program can be stored in a non-transitory computer-readable storage medium, when the computer program is executed by a processor, the computer can execute the saline-alkali area farmland crop irrigation method provided by the above methods, the method comprising: Get the current irrigation cycle of the target saline-alkali area farmland. The actual value of the soil salt reserve of the target saline-alkali area farmland at each time node. The first time node in the current irrigation cycle is the starting time of the current irrigation cycle. The interval between any two adjacent time nodes in the current irrigation cycle is the first preset time length. Indicates a positive integer with a starting value of 2; based on The actual value of the soil salt reserve of the target saline-alkali farmland in the target saline-alkali area at the time node and the target value of the soil salt reserve of the target saline-alkali farmland are used to determine the need for crop irrigation for the target crops planted in the target saline-alkali farmland. The environmental data of the target saline-alkali farmland in the period corresponding to the time node is obtained. The irrigation volume of farmland in saline-alkali area at the target time node, The time period corresponding to the time node is The time node and During the period between the first and second time nodes, the target value of soil salt reserves in the target saline-alkali farmland is obtained based on the basic parameters of each layer of soil in the target saline-alkali farmland, including soil bulk density and soil depth; The irrigation amount of the target saline-alkali area farmland at each time point is used to irrigate the target crops planted in the target saline-alkali area farmland. Increase by 1, return to the current irrigation cycle of the target saline-alkali farmland Steps to calculate the actual value of soil salt reserves in the target saline-alkali area farmland at each time node.

[0129] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented when the computer program is executed by a processor to perform the method for irrigating crops in saline-alkali areas provided by the above methods, the method comprising: Get the current irrigation cycle of the target saline-alkali area farmland. The actual value of the soil salt reserve of the target saline-alkali area farmland at each time node. The first time node in the current irrigation cycle is the starting time of the current irrigation cycle. The interval between any two adjacent time nodes in the current irrigation cycle is the first preset time length. Indicates a positive integer with a starting value of 2; based on The actual value of the soil salt reserve of the target saline-alkali farmland in the target saline-alkali area at the time node and the target value of the soil salt reserve of the target saline-alkali farmland are used to determine the need for crop irrigation for the target crops planted in the target saline-alkali farmland. The environmental data of the target saline-alkali farmland in the period corresponding to the time node is obtained. The irrigation volume of farmland in saline-alkali area at the target time node, The time period corresponding to the time node is The time node and During the period between the first and second time nodes, the target value of soil salt reserves in the target saline-alkali farmland is obtained based on the basic parameters of each layer of soil in the target saline-alkali farmland, including soil bulk density and soil depth; The irrigation amount of the target saline-alkali area farmland at each time point is used to irrigate the target crops planted in the target saline-alkali area farmland. Increase by 1, return to the current irrigation cycle of the target saline-alkali farmland Steps to calculate the actual value of soil salt reserves in the target saline-alkali area farmland at each time node.

[0130] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0131] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0132] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for irrigating crops in saline-alkali areas, characterized in that: include: Get the current irrigation cycle of the target saline-alkali area farmland. The actual value of the soil salt reserve of the target saline-alkali area farmland at a time node, the first time node in the current irrigation cycle is the starting time of the current irrigation cycle, and the interval between any two adjacent time nodes in the current irrigation cycle is a first preset time length, Indicates a positive integer with a starting value of 2; Based on the In the case where it is determined that the target crop planted in the target saline-alkali farmland needs to be irrigated based on the actual value of the soil salt reserve of the target saline-alkali farmland at the first time point and the target value of the soil salt reserve of the target saline-alkali farmland, the target crop planted in the target saline-alkali farmland needs to be irrigated based on the first time point. The environmental data of the target saline-alkali farmland in the time period corresponding to the time node is obtained. The irrigation volume of the target saline-alkali area farmland at the time point, The time period corresponding to the time node is The time node is related to the During the period between the time nodes, the target value of the soil salt reserve of the target saline-alkali farmland is obtained based on the basic parameters of each layer of soil in the target saline-alkali farmland, wherein the basic parameters include soil bulk density and soil depth; Based on the The target crops planted in the target saline-alkali farmland are irrigated according to the irrigation amount of the target saline-alkali farmland at each time point. Increase by 1, return to the current irrigation cycle of the target saline-alkali area farmland. Steps to calculate the actual value of soil salt reserves in the target saline-alkali area farmland at each time node.

2. The method for irrigating crops in saline-alkali areas according to claim 1, characterized in that: The target value of soil salt reserves of the target saline-alkali area farmland is obtained based on the following steps: Obtaining the soil conductivity value of each layer of soil in the target saline-alkali farmland after being corrected by standard temperature before the target crop is planted in the target saline-alkali farmland; Based on the soil conductivity value of each layer of soil in the target saline-alkali farmland corrected by standard temperature before the target crop is planted in the target saline-alkali farmland, obtaining the soil salt content of each layer of soil in the target saline-alkali farmland before the target crop is planted in the target saline-alkali farmland; Calculate the cumulative salt content of the target saline-alkali farmland before the target crop is planted in the target saline-alkali farmland based on the soil salt content of each layer of soil in the target saline-alkali farmland and the basic parameters of each layer of soil in the target saline-alkali farmland before the target crop is planted in the target saline-alkali farmland; Based on the cumulative salt content of the target saline-alkali farmland before the target crop is planted in the target saline-alkali farmland, the first The target value of soil salt reserves in the target saline-alkali area farmland at the time node.

3. The method for irrigating crops in saline-alkali areas according to claim 1, characterized in that: The The environmental data of the target saline-alkali farmland in the time period corresponding to the time node is obtained. The irrigation volume of the target saline-alkali area farmland at each time point includes: Based on the The average daily wind speed at the target height of the target saline-alkali area farmland, the average daily minimum relative humidity and the average plant height of the target crop in the period corresponding to the time node are calculated. The crop coefficient correction value corresponding to each time node; Based on the The crop coefficient correction value corresponding to the time node and the The reference crop evapotranspiration of the target saline-alkali area farmland at the time node is calculated. The irrigation volume of the target saline-alkali area farmland at each time point.

4. The method for irrigating crops in saline-alkali areas according to claim 1, characterized in that: Based on the The actual value of the soil salt reserve of the target saline-alkali farmland at a time point and the target value of the soil salt reserve of the target saline-alkali farmland are used to determine whether it is necessary to irrigate the target crops planted in the target saline-alkali farmland, including: In the said When the actual value of the soil salt reserves of the target saline-alkali farmland at a time point is greater than the product of the target value of the soil salt reserves of the target saline-alkali farmland and the salt target coefficient, it is determined that crop irrigation is needed for the target crops planted in the target saline-alkali farmland, and the salt target coefficient is determined based on the type of crop and the texture characteristics of the soil.

5. The method for irrigating crops in saline-alkali areas according to claim 1, characterized in that: Get the current irrigation cycle of the target saline-alkali area farmland. The actual value of soil salt reserves in the target saline-alkali area farmland at each time point, including: Get the The soil conductivity value of each layer of soil in the target saline-alkali area farmland at each time point; Based on the The soil conductivity value of each layer of soil in the target saline-alkali farmland at the time node and the basic parameters of each layer of soil in the target saline-alkali farmland are calculated. The actual value of soil salt reserves in the target saline-alkali area farmland at each time node.

6. The method for irrigating crops in saline-alkali areas according to claim 1, characterized in that: The target saline-alkali area farmland is obtained in the current irrigation cycle Before the actual value of the soil salt reserve of the target saline-alkali area farmland at a time node, the method further includes: Based on the type of the target crop, determining the target soil depth corresponding to the target saline-alkali area farmland; Based on the target soil depth, the soil in the target saline-alkali area farmland is divided into a target number of layers; Obtain the basic parameters of each layer of soil in the target saline-alkali area farmland.

7. The method for irrigating crops in saline-alkali areas according to any one of claims 1 to 6, characterized in that: The target saline-alkali area farmland is obtained in the current irrigation cycle After determining the actual value of soil salt reserves of the target saline-alkali area farmland at a time node, the method further comprises: Based on the The actual value of the soil salt reserve of the target saline-alkali farmland at a time point and the target value of the soil salt reserve of the target saline-alkali farmland are used to determine that there is no need to irrigate the target crops planted in the target saline-alkali farmland. Increase by 1, return to the current irrigation cycle of the target saline-alkali area farmland. Steps to calculate the actual value of soil salt reserves in the target saline-alkali area farmland at each time node.

8. A device for irrigation of crops in saline-alkali areas, characterized in that: include: The data acquisition module is used to obtain the current irrigation cycle of the target saline-alkali area farmland. The actual value of the soil salt reserve of the target saline-alkali area farmland at a time node, the first time node in the current irrigation cycle is the starting time of the current irrigation cycle, and the interval between any two adjacent time nodes in the current irrigation cycle is a first preset time length, Indicates a positive integer with a starting value of 2; A data calculation module is used to calculate the In the case where it is determined that the target crop planted in the target saline-alkali farmland needs to be irrigated based on the actual value of the soil salt reserve of the target saline-alkali farmland at the first time point and the target value of the soil salt reserve of the target saline-alkali farmland, the target crop planted in the target saline-alkali farmland needs to be irrigated based on the first time point. The environmental data of the target saline-alkali farmland in the time period corresponding to the time node is obtained. The irrigation volume of the target saline-alkali area farmland at the time point, The time period corresponding to the time node is The time node is related to the During the period between the time nodes, the target value of the soil salt reserve of the target saline-alkali farmland is obtained based on the basic parameters of each layer of soil in the target saline-alkali farmland, wherein the basic parameters include soil bulk density and soil depth; A loop control module is used to The target crops planted in the target saline-alkali farmland are irrigated according to the irrigation amount of the target saline-alkali farmland at each time point. Increase by 1, return to the current irrigation cycle of the target saline-alkali area farmland. Steps to calculate the actual value of soil salt reserves in the target saline-alkali area farmland at each time node.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the method for irrigating farmland crops in saline-alkali areas as described in any one of claims 1 to 7 is implemented.

10. A saline-alkali area farmland crop irrigation system, characterized in that: include: The electronic device, the profile soil salinity testing subsystem, the environmental information monitoring subsystem and the irrigation control subsystem according to claim 9; the electronic device is electrically connected to the profile soil salinity testing subsystem, the environmental information monitoring subsystem and the irrigation control subsystem respectively; The profile soil salinity test subsystem is used to obtain the first The actual value of the soil salt reserve of the target saline-alkali farmland at the time node, and the obtained value of the first irrigation cycle of the target saline-alkali farmland in the current irrigation cycle The actual value of the soil salt reserve of the target saline-alkali area farmland at a time node is sent to the electronic device; The environmental information monitoring subsystem is used to obtain the The environmental data of the target saline-alkali farmland in the period corresponding to the time node, and the obtained The environmental data of the farmland in the target saline-alkali area during the time period corresponding to the time node is sent to the electronic device; The irrigation control subsystem is used to control the irrigation control subsystem based on the first The irrigation amount of the target saline-alkali area farmland at a time node is controlled to control the irrigation equipment to irrigate the crops in the target saline-alkali area farmland.

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