A method, system and device for identifying water-saving of winter wheat root system

Abstract

The present application provides a kind of winter wheat root system water-saving identification method, system and device, it is related to crop water-saving identification technical field, the present application is carried out intercropping in specified test area, and competition area and non-competition area are divided to calculate regional competition index.Winter wheat root system sample is collected in the elongation stage, and the root system length and surface area in different soil depths are analyzed to generate root system growth index;At the same time, obtain the soil moisture content data, calculate the water absorption amount and water use efficiency of winter wheat, and analyze the root water absorption coefficient in combination with the root system growth index;Water use efficiency and root water absorption coefficient are used to generate water-saving evaluation index, and the regional competition index is compared with the set water-saving threshold to determine the root water-saving of winter wheat.

Description

Technical Field

[0001] The present invention relates to the technical field of crop water-saving property identification, and in particular to a method, system and device for identifying the water-saving property of winter wheat roots. Background Art

[0002] In current agricultural production, intercropping winter wheat and corn has become a common planting pattern. Due to their different growth cycles, intercropping can fully utilize resources such as soil, light, and water, improving resource utilization. Furthermore, intercropping allows two crops to be grown on the same land, thereby increasing yield per unit area and promoting efficient agricultural production. However, winter wheat and corn have similar jointing periods, both occurring in April and May. During this period, they compete for resources such as water and fertilizer. Therefore, it is necessary to select winter wheat and corn varieties with higher water-saving properties for intercropping to reduce resource waste caused by competition. Currently, there is no effective method to determine the water-saving properties of winter wheat based on intercrop competition.

[0003] In the existing identification of water-saving properties of winter wheat roots, research is usually conducted in a single crop environment, ignoring the mutual promotion and competition between crops in the intercropping model, resulting in the evaluation results being difficult to fully reflect the actual field conditions. In addition, the evaluation results only focus on a specific indicator, but lack a comprehensive analysis of multiple indicators, and cannot fully reflect the water-saving characteristics of the winter wheat root system. Therefore, the present invention combines the characteristics of intercropping of winter wheat and corn, and proposes a comprehensive water-saving identification method. Through regional division, root growth analysis, soil moisture measurement and competition between crops, the water-saving properties of winter wheat in the actual environment are reflected, thereby providing guidance for the selection of crop varieties when intercropping winter wheat and corn.

[0004] The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Summary of the Invention

[0005] The purpose of the present invention is to provide a method, system and device for identifying the water-saving ability of winter wheat roots, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A method for identifying the water-saving ability of winter wheat roots, comprising the following steps:

[0008] Select an experimental area and intercrop winter wheat and corn in the experimental area. The intercropping pattern is two rows of corn in a group, and a wheat area is demarcated between the two groups of corn to plant winter wheat.

[0009] The area between winter wheat and corn was divided into a competition area, and the wheat area was divided into a non-competition area. A sampling area containing both competition and non-competition areas was divided in the experimental area. The area of ​​competition and non-competition areas in the sampling area was counted, and the regional competition index was generated based on the statistical results.

[0010] Setting multiple soil depth sampling ranges, sampling the root system of winter wheat in the sampling area during the jointing stage, obtaining the root length and root surface area of ​​winter wheat in different soil depth ranges, generating the root growth index of winter wheat in different soil depth ranges, and further analyzing the generated root growth index of winter wheat in the sampling area;

[0011] The soil moisture content data of the sampling area was obtained during the jointing period, and the soil moisture reduction was generated to represent the water absorption of winter wheat. The total water supply of the sampling area was obtained, and the water use efficiency was generated based on the winter wheat water absorption and total water supply. The winter wheat root growth index and winter wheat water absorption in the sampling area were combined for analysis to generate the root water absorption coefficient.

[0012] Based on the water use efficiency and root water absorption coefficient of winter wheat in the sampling area, a water-saving evaluation index is generated, and a water-saving threshold is set. The water-saving evaluation index is compared with the regional competition index and the water-saving threshold to judge the root water-saving of winter wheat.

[0013] Furthermore, the row spacing of winter wheat is 20 cm, the plant spacing is 12 cm, and the row spacing between corn and winter wheat is 30 cm.

[0014] Furthermore, the formula for generating the regional competition index is:

[0015]

[0016] Among them, Z represents the regional competition index of winter wheat in the sampling area, s1 represents the area of ​​the competition zone, and s2 represents the area of ​​the non-competition zone.

[0017] Furthermore, the principle for generating the winter wheat root growth index in the sampling area is as follows:

[0018] The formula for generating the root growth index is:

[0019]

[0020] Among them, M i,j represents the root growth index of the j-th winter wheat plant in the i-th soil depth range, i represents the index of the soil depth range, and i∈[1,5], j represents the index of the winter wheat in the sampling area, and j∈[1,J], J represents the number of winter wheat in the sampling area, L i,j represents the root length of the j-th winter wheat plant in the i-th soil depth range, Si,j N represents the root surface area of ​​the jth winter wheat plant in the ith soil depth range, j represents the root growth index of the jth winter wheat plant;

[0021] The formula for generating the winter wheat root growth index for the sampling area is:

[0022]

[0023] Where N represents the winter wheat root growth index in the sampling area.

[0024] Furthermore, the principle on which the water use efficiency is derived is:

[0025] The formula used to generate the soil moisture reduction is:

[0026]

[0027] Among them, △θ i represents the change in soil moisture per unit area in the i-th soil depth range of the sampling area, S represents the area of ​​the sampling area, and θ i (0) represents the soil moisture content of the i-th soil depth range in the sampling area at the initial sampling time, θ i (t) represents the soil moisture content of the i-th soil depth range in the sampling area at the final moment of sampling time, △θ total It represents the reduction of soil moisture in the sampling area;

[0028] The formula based on which water use efficiency is generated is:

[0029]

[0030] W=W1+W2

[0031] Where X represents the water use efficiency of winter wheat in the sampling area, W represents the total water supply to the sampling area, W1 represents the irrigation amount in the sampling area, and W2 represents the precipitation in the sampling area.

[0032] Furthermore, the formula for generating the root water absorption coefficient is:

[0033] Y=△θ total ·N

[0034] Where Y represents the root water absorption coefficient of winter wheat in the sampling area, △θ total represents the soil moisture reduction in the sampling area, and N represents the winter wheat root growth index in the sampling area.

[0035] Furthermore, the formula for generating the water-saving evaluation index is:

[0036] K=w1·X+w2·Y

[0037] Among them, K represents the water-saving evaluation index of winter wheat in the sampling area, w1 and w2 represent the weight coefficients of water use efficiency and root water absorption coefficient, respectively, w1+w2=1, and w1>w2.

[0038] Furthermore, the principles for judging the water-saving ability of winter wheat roots are as follows:

[0039] The principles behind generating the water conservation threshold are:

[0040] Winter wheat with known water-saving grades, specifically high water-saving, medium water-saving, and low water-saving grades, was selected. The water-saving evaluation index of all winter wheat was calculated respectively. The water-saving evaluation index ranges corresponding to high water-saving, medium water-saving, and low water-saving winter wheat were obtained. The formula for generating high water-saving thresholds and low water-saving thresholds was as follows:

[0041]

[0042] Among them, ε high Indicates high water conservation threshold, U mid Indicates the highest water-saving evaluation index of medium water-saving winter wheat, D high Represents the lowest water-saving evaluation index of high water-saving winter wheat, ε low Indicates the low water conservation threshold, U low Indicates the highest water-saving evaluation index of low water-saving winter wheat, D mid Indicates the minimum water-saving evaluation index of medium water-saving winter wheat;

[0043] Within a certain range, the regional competition index increases, promoting the root growth and water absorption of winter wheat. When it reaches a certain value, this promotion reaches its maximum value, and the corresponding water-saving evaluation index is at its maximum value. At this time, the corresponding regional competition index is Z0. After that, as the regional competition index increases, the water-saving evaluation index gradually decreases due to fierce competition.

[0044] when The corresponding winter wheat varieties in the sampling area are highly water-saving;

[0045] when When , the corresponding winter wheat variety in the sampling area is medium water-saving;

[0046] when When , the corresponding winter wheat varieties in the sampling area are low water-saving;

[0047] Where Z represents the regional competition index of winter wheat in the sampling area, Express Round up.

[0048] The present invention also provides a winter wheat root water-saving ability identification system, which is used to implement the above-mentioned winter wheat root water-saving ability identification method, specifically comprising:

[0049] The intercropping module is used to select the experimental area and intercrop winter wheat and corn in the experimental area. The intercropping pattern is to plant two rows of corn in a group, and then demarcate the wheat area between the two groups of corn to plant winter wheat.

[0050] The competition calculation module is used to divide the area between winter wheat and corn into a competitive area and the wheat area into a non-competitive area. A sampling area containing both competitive and non-competitive areas is divided in the experimental area, and the area of ​​the competitive and non-competitive areas in the sampling area is calculated. The regional competition index is generated based on the statistical results.

[0051] A root system detection module is used to set multiple soil depth sampling ranges, perform root sampling on winter wheat in the sampling area during the jointing period, obtain the root length and root surface area of ​​winter wheat in different soil depth ranges, generate the root growth index of winter wheat in different soil depth ranges, and further analyze and generate the root growth index of winter wheat in the sampling area;

[0052] The moisture detection module is used to obtain soil moisture data in the sampling area during the jointing period, generate soil moisture reduction to represent the water absorption of winter wheat, and obtain the total water supply in the sampling area. The water use efficiency is generated based on the winter wheat water absorption and total water supply. The root growth index of winter wheat in the sampling area and the winter wheat water absorption are combined for analysis to generate the root water absorption coefficient.

[0053] The comprehensive judgment module is used to generate a water-saving evaluation index based on the water use efficiency and root water absorption coefficient of winter wheat in the sampling area, set a water-saving threshold, and compare the water-saving evaluation index with the regional competition index and the water-saving threshold to judge the root water-saving of winter wheat.

[0054] The present invention also provides a device for identifying the water-saving property of winter wheat roots. The device comprises: a memory, a processor, and a control program stored in the memory and executable on the processor. When the control program is executed by the processor, the method for identifying the water-saving property of winter wheat roots is implemented.

[0055] Compared with the prior art, the present invention has the following beneficial effects:

[0056] The present invention generates a regional competition index by intercropping winter wheat and corn and dividing them into competition and non-competition zones. This can more realistically simulate the root competition conditions in the actual field crop symbiotic environment, more comprehensively reflect the differences in winter wheat root water absorption efficiency in different zones, and help improve the scientificity and accuracy of water-saving evaluation. Root sampling at different soil depths ensures that the acquired data is more representative and comprehensive. The root growth characteristics in different soil layers are captured, reflecting a more complete root system condition. The generated root growth index can quantitatively reflect the morphological characteristics of the root system, providing basic data support for subsequent water-saving analysis. The generated water use efficiency reflects the water absorption capacity of winter wheat, and the water-saving performance of the winter wheat root system is evaluated from multiple perspectives.

[0057] The present invention also generates a water-saving evaluation index through water use efficiency and root water absorption coefficient, and combines it with the regional competition index to expand the water-saving evaluation from the sampling area to the winter wheat variety. It can identify the water-saving performance of winter wheat under different planting schemes, thereby improving the applicability of the scheme. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 This is a schematic diagram of a method flow in accordance with an embodiment of the present invention;

[0059] Figure 2 Schematic diagram of system modules according to an embodiment of the present invention. DETAILED DESCRIPTION

[0060] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments.

[0061] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0062] Example:

[0063] See also Figure 1 , the present invention provides a technical solution:

[0064] A winter wheat root water-saving identification method, the specific steps comprising:

[0065] Step 1: Select the test area, and plant winter wheat and corn in the test area; the mode of intercropping is two rows of corn as a group, and the winter wheat is planted in the area between the two groups of corn;

[0066] In this embodiment, the farmland with loam soil is selected as the test area, because the loam soil has stable physical properties, can better retain water than sandy soil and clay soil, and will not cause the soil to be too heavy, thereby reducing the test deviation caused by the difference in soil texture under different test conditions;

[0067] In the life cycle of winter wheat and corn, the jointing stage of the two is roughly the same, in April-May, and the crops grow most rapidly at the jointing stage, so only the mutual influence of intercropping at the jointing stage is discussed, and the jointing stage is used to replace the entire life cycle of winter wheat and corn.

[0068] The row spacing of winter wheat is 20 cm, the plant spacing is 12 cm, the row spacing of corn and winter wheat is 30 cm, the row spacing of winter wheat represents the distance between the adjacent two rows of winter wheat planted in the wheat area, the plant spacing represents the distance between the same row of winter wheat, and the row spacing of corn and winter wheat represents the distance between a row of corn and the closest row of corn in the wheat area. In the test area, the area between the two rows of corn is used as the winter wheat planting area, and is planted according to the set row spacing and plant spacing; adjusting the distance between the two rows of corn can adjust the size of the competition area and the non-competition area, and the larger the distance between the two rows of corn, the larger the proportion of the non-competition area.

[0069] Step 2: Divide the area between winter wheat and corn into a competition area, and the wheat area as a non-competition area, divide a sampling area containing both the competition area and the non-competition area in the test area, and count the area of the competition area and the non-competition area in the sampling area, and generate a regional competition index according to the statistical result;

[0070] In this embodiment, the formula for generating the regional competition index is:

[0071]

[0072] Wherein, Z represents the regional competition index of winter wheat in the sampling area, s1 represents the area of the competition area, and s2 represents the area of the non-competition area.

[0073] The regional competition index reflects the influence of the competition of winter wheat with other plants on the water-saving property of winter wheat in the actual planting scene, and the regional competition index is proportional to the area of the competition area of winter wheat, and the higher the regional competition index, the more intense the competition of winter wheat with other plants, and the lower the water-saving property.

[0074] Winter wheat in the competitive zone has limited water and nutrients, and needs to adapt to resource limitations through root expansion or adjustment, which reflects the water absorption capacity of winter wheat in harsh environments. The water and nutrients in the non-competitive zone are relatively sufficient, and the winter wheat root system can grow normally, which shows the water absorption capacity of winter wheat without interference. Considering the competitive zone and the non-competitive zone at the same time can more realistically simulate the actual growth environment.

[0075] Step 3: Set multiple soil depth sampling ranges, perform root sampling on winter wheat in the sampling area during the jointing stage, obtain the root length and root surface area of ​​winter wheat in different soil depth ranges, generate the root growth index of winter wheat in different soil depth ranges, and further analyze and generate the root growth index of winter wheat in the sampling area;

[0076] In this embodiment, five soil depth sampling ranges are set, specifically: surface soil, depth 0-20 cm; primary root layer, depth 20-40 cm; root growth layer, depth 40-60 cm; mid-deep layer, depth 60-80 cm; deep soil, depth 80-120 cm;

[0077] In this embodiment, the principle for generating the winter wheat root growth index of the sampling area is:

[0078] The formula for generating the root growth index is:

[0079]

[0080] Among them, M i,j represents the root growth index of the j-th winter wheat plant in the i-th soil depth range, i represents the index of the soil depth range, and i∈[1,5], j represents the index of the winter wheat in the sampling area, and j∈[1,J], J represents the number of winter wheat in the sampling area, L i,j represents the root length of the j-th winter wheat plant in the i-th soil depth range, S i,j N represents the root surface area of ​​the jth winter wheat plant in the ith soil depth range, j represents the root growth index of the jth winter wheat plant;

[0081] The formula for generating the winter wheat root growth index for the sampling area is:

[0082]

[0083] Where N represents the winter wheat root growth index in the sampling area.

[0084] The root growth index is the ratio of root length to root surface area, which reflects the morphological characteristics of winter wheat roots. The roots in each depth range are scanned by a root scanner to obtain the root length and surface area within the depth range. The higher the root growth index, the thinner and denser the root system is, and the longer it extends in the soil, thereby enhancing the ability to detect and absorb water, and the stronger the water-saving ability. The average value of the root growth index of each winter wheat plant represents the root growth index of the entire sampling area.

[0085] Step 4: Obtain soil moisture data in the sampling area during the jointing stage, generate soil moisture reduction to represent the water absorption of winter wheat, and obtain the total water supply in the sampling area. Generate water use efficiency based on the water absorption and total water supply of winter wheat. Combine the winter wheat root growth index and winter wheat water absorption in the sampling area for analysis to generate the root water absorption coefficient.

[0086] In this embodiment, the principle for generating water use efficiency is:

[0087] The formula used to generate the soil moisture reduction is:

[0088]

[0089] Among them, △θ i represents the change in soil moisture per unit area in the i-th soil depth range of the sampling area, S represents the area of ​​the sampling area, and θ i (0) represents the soil moisture content of the i-th soil depth range in the sampling area at the initial sampling time, θ i (t) represents the soil moisture content of the i-th soil depth range in the sampling area at the final moment of sampling time, △θ total Represents the soil moisture reduction in the sampling area.

[0090] The change of soil moisture content in the i-th soil depth range reflects the change of soil moisture content from the initial moment to the end moment during the collection period, △θ i The higher the value of , the greater the reduction in soil moisture between the two time points and the stronger the water absorption of the root system. The changes in soil moisture content in each soil depth range are summed to generate the changes in soil moisture content in five soil depth ranges, which is the soil moisture reduction.

[0091] The formula based on which water use efficiency is generated is:

[0092]

[0093] W=W1+W2

[0094] Wherein, X represents the water use efficiency of winter wheat in the sampling area, W represents the total water supply to the sampling area, W1 represents the irrigation amount of the sampling area, and W2 represents the precipitation amount of the sampling area.

[0095] The water supply amount of the sampling area is obtained according to the area ratio of the sampling area to the test area,

[0096] The water use efficiency reflects the water use efficiency of winter wheat on water resources, and the higher the water absorption amount of winter wheat, the more the winter wheat can realize high growth under smaller water supply, and also reflects that the water saving property of winter wheat is higher, and the water use efficiency is proportional to the soil moisture reduction amount of the sampling area and inversely proportional to the total water supply to the sampling area.

[0097] The formula based on which the root water absorption coefficient is obtained is:

[0098] Y = △θ total · N

[0099] Wherein, Y represents the root water absorption coefficient of winter wheat in the sampling area, △θ total represents the soil moisture reduction amount of the sampling area, and N represents the root growth index of winter wheat in the sampling area.

[0100] The root water absorption coefficient reflects the influence of the root morphological characteristics of winter wheat on the water saving property of winter wheat, the soil moisture reduction amount is a quantitative water absorption capacity index, and the root growth index corrects the difference in water absorption capacity on the root morphology, and in the case that the soil moisture reduction amount is the same, the root water absorption capacity of winter wheat with a higher root growth index is stronger because it is more slender and has a wider extension range.

[0101] Step 5: generating a water saving property evaluation index based on the water use efficiency and the root water absorption coefficient of winter wheat in the sampling area, setting a water saving property threshold, comparing the water saving property evaluation index with the regional competition index and the water saving property threshold, and judging the root water saving property of winter wheat.

[0102] In this embodiment, the formula based on which the water saving property evaluation index is generated is:

[0103] K = w1·X + w2·Y

[0104] Wherein, K represents the water saving property evaluation index of winter wheat in the sampling area, w1 and w2 represent the weight coefficients of the water use efficiency and the root water absorption coefficient respectively, w1 + w2 = 1, and w1 > w2.

[0105] The water-saving evaluation index reflects the water-saving performance of winter wheat by combining the water absorption and morphological characteristics of winter wheat. It is proportional to the water use efficiency and the root water absorption coefficient. The water use efficiency directly measures the relationship between water resource input and crop water absorption. The core goal of water-saving evaluation is to improve water resource utilization efficiency. Therefore, the weight coefficient of water use efficiency is the highest, w1=0.6; the root water absorption coefficient measures the influence of root morphology on water acquisition. Its influence on water-saving performance is an indirect indicator relative to water use efficiency. Therefore, the weight coefficient is lower than that of water use efficiency, w2=0.4.

[0106] The principles for judging the water-saving ability of winter wheat roots are as follows:

[0107] The principles behind generating the water conservation threshold are:

[0108] Winter wheat with known water-saving grades, specifically high water-saving, medium water-saving, and low water-saving grades, was selected. The water-saving evaluation index of all winter wheat was calculated respectively. The water-saving evaluation index ranges corresponding to high water-saving, medium water-saving, and low water-saving winter wheat were obtained. The formula for generating high water-saving thresholds and low water-saving thresholds was as follows:

[0109]

[0110] Among them, ε high Indicates high water conservation threshold, U mid Indicates the highest water-saving evaluation index of medium water-saving winter wheat, D high Represents the lowest water-saving evaluation index of high water-saving winter wheat, ε low Indicates the low water conservation threshold, U low Indicates the highest water-saving evaluation index of low water-saving winter wheat, D mid Indicates the minimum water-saving evaluation index of medium water-saving winter wheat;

[0111] Within a certain range, the regional competition index increases, promoting the root growth and water absorption of winter wheat. When it reaches a certain value, this promotion reaches its maximum value, and the corresponding water-saving evaluation index is at its maximum value. At this time, the corresponding regional competition index is Z0. After that, as the regional competition index increases, the water-saving evaluation index gradually decreases due to fierce competition.

[0112] when The corresponding winter wheat varieties in the sampling area are highly water-saving;

[0113] when When , the corresponding winter wheat variety in the sampling area is medium water-saving;

[0114] when When , the corresponding winter wheat varieties in the sampling area are low water-saving;

[0115] Where Z represents the regional competition index of winter wheat in the sampling area, Express Round up.

[0116] It reflects the water-saving evaluation index after being regulated by the regional competition index. When Z≤Z0, the water-saving performance will not be reduced due to the change of Z. Equivalent to comparing K and ε high When Z>Z0, as the regional competition index increases, the water-saving evaluation index gradually decreases. The water-saving evaluation index after regulation is compared with the high water-saving threshold and the low water-saving threshold to judge the water-saving performance of winter wheat varieties in the sampling area.

[0117] See also Figure 2 The present invention also provides a winter wheat root water-saving identification system, which is used to implement the above-mentioned winter wheat root water-saving identification device method, specifically comprising:

[0118] The intercropping module is used to select the experimental area and intercrop winter wheat and corn in the experimental area. The intercropping pattern is to plant two rows of corn in a group, and then demarcate the wheat area between the two groups of corn to plant winter wheat.

[0119] The competition calculation module is used to divide the area between winter wheat and corn into a competitive area and the wheat area into a non-competitive area. A sampling area containing both competitive and non-competitive areas is divided in the experimental area, and the area of ​​the competitive and non-competitive areas in the sampling area is calculated. The regional competition index is generated based on the statistical results.

[0120] A root system detection module is used to set multiple soil depth sampling ranges, perform root sampling on winter wheat in the sampling area during the jointing period, obtain the root length and root surface area of ​​winter wheat in different soil depth ranges, generate the root growth index of winter wheat in different soil depth ranges, and further analyze and generate the root growth index of winter wheat in the sampling area;

[0121] The moisture detection module is used to obtain soil moisture data in the sampling area during the jointing period, generate soil moisture reduction to represent the water absorption of winter wheat, and obtain the total water supply in the sampling area. The water use efficiency is generated based on the winter wheat water absorption and total water supply. The root growth index of winter wheat in the sampling area and the winter wheat water absorption are combined for analysis to generate the root water absorption coefficient.

[0122] The comprehensive judgment module is used to generate a water-saving evaluation index based on the water use efficiency and root water absorption coefficient of winter wheat in the sampling area, set a water-saving threshold, and compare the water-saving evaluation index with the regional competition index and the water-saving threshold to judge the root water-saving of winter wheat.

[0123] The present invention also provides a device for identifying the water-saving property of winter wheat roots. The device comprises: a memory, a processor, and a control program stored in the memory and runnable on the processor. When the control program is executed by the processor, the method for identifying the water-saving property of winter wheat roots is implemented.

[0124] The above formulas are all dimensionless and numerical calculations. The formulas are obtained by collecting a large amount of data and performing software simulation to obtain the most recent real situation. The preset parameters in the formulas are set by technicians in this field according to actual conditions.

[0125] The above embodiments can be implemented in whole or in part by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed by hardware or software depends on the specific application and design constraints of the technical solution.

[0126] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, and may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment as needed.

[0127] The above is only a specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed in this application, which should be covered by the scope of protection of the present application.

Claims

1. A method for identifying water-saving properties of winter wheat roots, characterized in that: The specific steps include: Select an experimental area and intercrop winter wheat and corn in the experimental area. The intercropping pattern is two rows of corn in a group, and a wheat area is demarcated between the two groups of corn to plant winter wheat. The area between winter wheat and corn was divided into a competition area, and the wheat area was divided into a non-competition area. A sampling area containing both competition and non-competition areas was divided in the experimental area. The area of ​​competition and non-competition areas in the sampling area was counted, and the regional competition index was generated based on the statistical results. Setting multiple soil depth sampling ranges, sampling the root system of winter wheat in the sampling area during the jointing stage, obtaining the root length and root surface area of ​​winter wheat in different soil depth ranges, generating the root growth index of winter wheat in different soil depth ranges, and further analyzing the generated root growth index of winter wheat in the sampling area; The soil moisture content data of the sampling area was obtained during the jointing period, and the soil moisture reduction was generated to represent the water absorption of winter wheat. The total water supply of the sampling area was obtained, and the water use efficiency was generated based on the winter wheat water absorption and total water supply. The winter wheat root growth index and winter wheat water absorption in the sampling area were combined for analysis to generate the root water absorption coefficient. Based on the water use efficiency and root water absorption coefficient of winter wheat in the sampling area, a water-saving evaluation index was generated, and a water-saving threshold was set. The water-saving evaluation index was combined with the regional competition index and the water-saving threshold to compare and determine the root water-saving ability of winter wheat. The principle for generating the winter wheat root growth index of the sampling area is based on: The formula for generating the root growth index is: Among them, M i,j represents the root growth index of the j-th winter wheat plant in the i-th soil depth range, i represents the index of the soil depth range, and i∈[1,5], j represents the index of the winter wheat in the sampling area, and j∈[1,J], J represents the number of winter wheat in the sampling area, L i,j represents the root length of the j-th winter wheat plant in the i-th soil depth range, S i,j N represents the root surface area of ​​the jth winter wheat plant in the ith soil depth range, j represents the root growth index of the jth winter wheat plant; The formula for generating the winter wheat root growth index for the sampling area is: Wherein, N represents the winter wheat root growth index in the sampling area; The principles upon which water use efficiency is derived are: The formula used to generate the soil moisture reduction is: Among them, △θ i represents the change in soil moisture per unit area in the i-th soil depth range of the sampling area, S represents the area of ​​the sampling area, and θ i (0) represents the soil moisture content of the i-th soil depth range in the sampling area at the initial sampling time, θ i (t) represents the soil moisture content of the i-th soil depth range in the sampling area at the final moment of sampling time, △θ total It represents the amount of soil moisture reduction in the sampling area; The formula used to generate water use efficiency is: W=W1+W2 Where X represents the water use efficiency of winter wheat in the sampling area, W represents the total water supply to the sampling area, W1 represents the irrigation amount in the sampling area, and W2 represents the precipitation in the sampling area; The formula for generating the root water absorption coefficient is: Y=△θ total ·N Where Y represents the root water absorption coefficient of winter wheat in the sampling area, △θ total represents the soil moisture reduction in the sampling area, and N represents the winter wheat root growth index in the sampling area.

2. The method for identifying water-saving properties of winter wheat roots according to claim 1, wherein: When intercropping crops, the row spacing of winter wheat is 20 cm and the plant spacing is 12 cm, and the row spacing between corn and winter wheat is 30 cm.

3. The method for identifying water-saving properties of winter wheat roots according to claim 1, wherein: The formula for generating the regional competition index is: Among them, Z represents the regional competition index of winter wheat in the sampling area, s1 represents the area of ​​the competition zone, and s2 represents the area of ​​the non-competition zone.

4. The method for identifying water-saving properties of winter wheat roots according to claim 1, wherein: The formula for generating the water conservation evaluation index is: K=w1·X+w2·Y Among them, K represents the water-saving evaluation index of winter wheat in the sampling area, w1 and w2 represent the weight coefficients of water use efficiency and root water absorption coefficient, respectively, w1+w2=1, and w1>w2.

5. The method for identifying water-saving properties of winter wheat roots according to claim 4, wherein: The principles for judging the water-saving ability of winter wheat roots are as follows: The principles behind generating the water conservation threshold are: Winter wheat with known water-saving grades, specifically high water-saving, medium water-saving, and low water-saving grades, was selected. The water-saving evaluation index of all winter wheat was calculated respectively. The water-saving evaluation index ranges corresponding to high water-saving, medium water-saving, and low water-saving winter wheat were obtained. The formula for generating high water-saving thresholds and low water-saving thresholds was as follows: Among them, ε high Indicates high water conservation threshold, U mid Indicates the highest water-saving evaluation index of medium water-saving winter wheat, D high Represents the lowest water-saving evaluation index of high water-saving winter wheat, ε low Indicates the low water conservation threshold, U low Indicates the highest water-saving evaluation index of low water-saving winter wheat, D mid Indicates the minimum water-saving evaluation index of medium water-saving winter wheat; Within a certain range, the regional competition index increases, promoting the root growth and water absorption of winter wheat. When it reaches a certain value, this promotion reaches its maximum value, and the corresponding water-saving evaluation index is at its maximum value. At this time, the corresponding regional competition index is Z0. After that, as the regional competition index increases, the water-saving evaluation index gradually decreases due to fierce competition. when The corresponding winter wheat varieties in the sampling area are highly water-saving; when When , the corresponding winter wheat variety in the sampling area is medium water-saving; when When , the corresponding winter wheat varieties in the sampling area are low water-saving; Where Z represents the regional competition index of winter wheat in the sampling area, Express Round up.

6. A winter wheat root water-saving identification system, characterized by: The system is used to implement the method for identifying the water-saving ability of winter wheat roots according to any one of claims 1 to 5, specifically comprising: The intercropping module is used to select the experimental area and intercrop winter wheat and corn in the experimental area. The intercropping pattern is to plant two rows of corn in a group, and then demarcate the wheat area between the two groups of corn to plant winter wheat. The competition calculation module is used to divide the area between winter wheat and corn into a competitive area and the wheat area into a non-competitive area. A sampling area containing both competitive and non-competitive areas is divided in the experimental area, and the area of ​​the competitive and non-competitive areas in the sampling area is calculated. The regional competition index is generated based on the statistical results. A root system detection module is used to set multiple soil depth sampling ranges, perform root sampling on winter wheat in the sampling area during the jointing period, obtain the root length and root surface area of ​​winter wheat in different soil depth ranges, generate the root growth index of winter wheat in different soil depth ranges, and further analyze and generate the root growth index of winter wheat in the sampling area; The moisture detection module is used to obtain soil moisture data in the sampling area during the jointing period, generate soil moisture reduction to represent the water absorption of winter wheat, and obtain the total water supply in the sampling area. The water use efficiency is generated based on the winter wheat water absorption and total water supply. The root growth index of winter wheat in the sampling area and the winter wheat water absorption are combined for analysis to generate the root water absorption coefficient. The comprehensive judgment module is used to generate a water-saving evaluation index based on the water use efficiency and root water absorption coefficient of winter wheat in the sampling area, set a water-saving threshold, and compare the water-saving evaluation index with the regional competition index and the water-saving threshold to judge the root water-saving of winter wheat.

7. A device for identifying water-saving properties of winter wheat roots, characterized by: The winter wheat root water-saving ability identification device includes: a memory, a processor, and a control program stored in the memory and executable on the processor. When the control program is executed by the processor, the winter wheat root water-saving ability identification method according to any one of claims 1 to 5 is implemented.

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