Lysimeter

Abstract

The utility model relates to the technical field of soil monitoring, and provides a lysimeter which comprises a weighing barrel, a permeable membrane and a monitoring assembly, the weighing barrel is provided with a first opening and a second opening, the first opening is formed in the upper end of the weighing barrel, and the second opening is formed in the lower end of the weighing barrel; the permeable membrane is laid at the second opening and is used for assisting moisture movement of the to-be-detected soil; the monitoring assembly is arranged on the weighing barrel and used for monitoring the weight of the to-be-measured soil, the soil water potential of the to-be-measured soil and the soil moisture of the to-be-measured soil. According to the lysimeter provided by the utility model, the original closed bottom is replaced by the permeable membrane material, so that the bottom of the weighing barrel is changed into an open design, the problem that soil to be measured is not communicated with natural soil below can be solved, and water can freely circulate between the soil to be measured and the natural soil; and the movement condition of field moisture can be simulated more truly.

Description

TECHNICAL FIELD

[0001] The utility model relates to soil monitoring technical field especially relates to a lysimeter. BACKGROUND

[0002] The weighing type lysimeter is a kind of equipment for measuring soil moisture evaporation and leakage, it is usually constituted by a weighing sensor and a container containing soil sample.In the weighing process, soil sample is placed in container, and the bottom of container is designed as closed type to collect leakage moisture, in the evaporation process, the equipment continuously monitors the weight change of container, to determine the evaporation amount of moisture in soil, and simultaneously, by recording the amount of moisture collected in the bottom of container, the leakage amount of moisture in soil can be determined.

[0003] However, in the process of determining leakage amount, the bottom of container bearing soil is closed type in the existing lysimeter, which causes that the soil to be measured and the lower natural soil are not connected, so that the moisture in the bottom of soil in lysimeter cannot flow freely, in the real situation in field, moisture flows to the bottom of soil due to gravity potential and matrix potential and the like, and the water absorption of soil surface evaporation and vegetation root system transports moisture in soil to the upper side, and the current lysimeter hinders the continuity of this process due to the closed structure of bottom, i.e., the determination result does not conform to the actual situation in field. SUMMARY

[0004] The first aspect of the utility model provides a kind of lysimeter, to solve the defect that determination result does not conform to the actual situation in field in prior art, utilize water-permeable membrane material to replace original closed bottom, and then the bottom of weighing barrel is changed to open design, can eliminate the problem that the soil to be measured and the lower natural soil are not connected, so that moisture can flow freely between the soil to be measured and natural soil, can more truly simulate the situation of moisture movement in field.

[0005] The second aspect of the utility model provides a kind of soil monitoring system.

[0006] The utility model provides a kind of lysimeter, including:

[0007] Weighing barrel, with first opening and second opening, the first opening is located at the upper end of the weighing barrel, and the second opening is located at the lower end of the weighing barrel;

[0008] Water-permeable membrane, laid in the second opening, the water-permeable membrane is used to assist the moisture movement of soil to be measured;

[0009] Monitoring assembly, located in the weighing barrel, the monitoring assembly is used to monitor the weight of soil to be measured, soil water potential of soil to be measured and soil moisture of soil to be measured.

[0010] The utility model provides a steam permeameter, the monitoring assembly includes:

[0011] Quality monitoring part, be located in the weighing barrel, quality monitoring part is used for monitoring the weight of the soil to be measured,

[0012] Soil water potential monitoring part, be located in the water permeable membrane, soil water potential monitoring part is used for monitoring the soil water potential of the soil to be measured,

[0013] Soil moisture monitoring part, be located in the water permeable membrane, soil moisture monitoring part is used for monitoring the soil moisture of the soil to be measured.

[0014] The utility model provides a steam permeameter, the quality monitoring part includes lifting component, weight sensor and first support piece, the first support piece is set in the weighing barrel with first support piece fixed connection, lifting component is located in the below of first support piece, weight sensor is located between lifting component and first support piece, in the weighing state, lifting component is suitable for lifting first support piece to make the soil to be measured hang in the air.

[0015] The utility model provides a steam permeameter, lifting component includes annular base and telescopic link, annular base is located below the weighing barrel with the position of first support piece corresponds, telescopic link is connected with annular base, weight sensor is located between telescopic link and first support piece, in the weighing state, telescopic link is suitable for lifting first support piece and weighing barrel to make the soil to be measured hang in the air.

[0016] The utility model provides a steam permeameter, the quality monitoring part still includes second support piece, the shape of second support piece corresponds with the shape of first support piece, second support piece is set in the weighing barrel with located between telescopic link and weight sensor.

[0017] The utility model provides a steam permeameter, the water permeable membrane includes nylon net water permeable membrane.

[0018] The utility model provides a steam permeameter still includes shell, the weighing barrel and monitoring assembly all are located in the inside of shell.

[0019] The bottom of the traditional weighing type lysimeter is closed, which causes the soil to be measured and the natural soil below the test field to be not connected, hinders the free flow of water, and in the actual field conditions, water flows to the bottom of the soil along the gravity potential and the matric potential, and can be transported to the upper part through the action of root water absorption, etc., due to the closed bottom, the water in the bottom of the soil in the lysimeter cannot flow naturally, resulting in a deviation between the measurement result and the actual field condition. The lysimeter provided in the embodiment of the utility model uses the water permeable membrane material to replace the original closed bottom, and then the bottom of the weighing barrel is designed to be open, so that the problem that the soil to be measured and the natural soil below are not connected can be eliminated during the use of the lysimeter, the water can freely flow between the soil to be measured and the natural soil, the water movement in the field can be more truly simulated, and the design makes the soil water movement process more in line with the actual situation, and the measurement authenticity is improved.

[0020] In addition, the traditional lysimeter cannot directly measure the leakage amount due to the closed bottom, and usually can only estimate the leakage amount through the water collected by the bottom water collecting device, however, this method ignores the complexity of the free flow process of water in the bottom, and the calculation of the leakage amount is not accurate enough, in the embodiment of the utility model, the water flow between the soils is restored through the water permeable membrane, and further, based on the weight of the soil to be measured, the soil water potential of the soil to be measured and the soil moisture of the soil to be measured obtained by the monitoring assembly, the leakage amount with higher accuracy can be calculated, that is, the accuracy of measuring the leakage amount can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0022] Figure 1 It is a structure schematic view of the lysimeter provided in the embodiment of the utility model.

[0023] Figure 2 It is a flow schematic view of the calculation method of the evapotranspiration amount provided in the embodiment of the utility model.

[0024] Figure 3 An example of an electronic device is shown in the following.

[0025] Reference signs:

[0026] 10: evaporation lysimeter; 20: meteorological monitoring device; 30: data acquisition device; 40: photovoltaic panel; 100: weighing bucket; 200: water permeable membrane; 300: monitoring assembly; 310: mass monitoring component; 311: lifting member; 3111: annular base; 3112: telescopic rod; 312: weight sensor; 313: first support; 314: second support; 320: soil water potential monitoring component; 330: soil moisture monitoring component; 400: housing. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0029] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0030] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0031] Figure 1 is a structural schematic diagram of the evaporation and infiltration instrument provided by the embodiments of the present application.

[0032] Referring to Figure 1 The first aspect of the present application provides an evaporation and infiltration instrument 10, which comprises a weighing barrel 100, a water-permeable membrane 200 and a monitoring assembly 300. The weighing barrel 100 has a first opening and a second opening. The first opening is arranged at the upper end of the weighing barrel 100, and the second opening is arranged at the lower end of the weighing barrel 100, that is, the weighing barrel 100 has a barrel-shaped structure with the upper and lower ends being through. The material of the weighing barrel 100 can be adaptively selected according to the actual situation, for example, a material such as stainless steel or hard plastic. In the experimental process, the weighing barrel 100 is used to carry the soil to be measured.

[0033] The water-permeable membrane 200 is arranged outside the second opening. The water-permeable membrane 200 is used to form the bottom of the weighing barrel 100, so as to assist the water movement of the soil to be measured. In the case of not hindering the water movement between the soil to be measured and the soil in the test field, the material of the water-permeable membrane 200 can be adaptively selected according to the actual situation, for example, the water-permeable membrane 200 can be a nylon net water-permeable membrane. The monitoring assembly 300 is arranged in the weighing barrel 100. The monitoring assembly 300 is used to monitor the weight of the soil to be measured, the soil water potential of the soil to be measured and the soil moisture of the soil to be measured.

[0034] Referring to Figure 1It can be understood that the bottom of the traditional weighing type lysimeter 10 is closed, which causes the non-communication between the to-be-measured soil and the natural soil below the test field, hinders the free flow of water, and in the actual field condition, water flows to the bottom of the soil along the gravity potential and the matric potential, and can be transported to the upper part through the action of root water absorption, etc. Due to the closed bottom, the water in the bottom of the soil in the lysimeter 10 cannot flow naturally, resulting in a deviation between the measurement result and the actual field condition. The lysimeter 10 provided in the embodiment of the utility model uses the water-permeable membrane 200 material to replace the original closed bottom, and then the bottom of the weighing barrel 100 is designed to be open, so that the problem of non-communication between the to-be-measured soil and the natural soil below can be eliminated during the use of the lysimeter 10, the water can flow freely between the to-be-measured soil and the natural soil, and the water movement condition in the field can be simulated more truly. This design makes the soil water movement process more in line with the actual condition, and improves the authenticity of measurement.

[0035] In addition, the traditional lysimeter 10 cannot directly measure the leakage amount due to the closed bottom, and usually can only estimate the leakage amount through the water collected by the bottom water collecting device. However, this method ignores the complexity of the free flow process of water at the bottom, resulting in inaccurate calculation of the leakage amount. In the embodiment of the utility model, the water-permeable membrane 200 restores the real water flow between the soils, and further, based on the weight of the to-be-measured soil, the soil water potential of the to-be-measured soil and the soil moisture of the to-be-measured soil obtained by the monitoring assembly 300, the leakage amount with higher accuracy can be calculated, that is, the accuracy of measuring the leakage amount can be improved.

[0036] Continuing to refer to Figure 1 In the optional embodiment of the utility model, the monitoring assembly 300 includes a mass monitoring component 310, a soil water potential monitoring component 320 and a soil moisture monitoring component 330. The mass monitoring component 310 is arranged on the outside of the weighing barrel 100 and is fixedly connected with the weighing barrel 100, and is used for monitoring the weight of the to-be-measured soil. The soil water potential monitoring component 320 is arranged on the water-permeable membrane 200, and is used for monitoring the water potential of the to-be-measured soil. The soil water potential monitoring component 320 can select an existing product such as a soil water potential sensor. The soil moisture monitoring component 330 is also arranged on the water-permeable membrane 200, and is used for monitoring the water of the to-be-measured soil. The soil moisture monitoring component 330 can select an existing product such as a soil moisture sensor.

[0037] Referring to Figure 1It can be understood that the weight of the to-be-measured soil, the water potential of the to-be-measured soil and the moisture of the to-be-measured soil can be accurately obtained, and the authenticity and accuracy of measurement can be improved in the evaporation lysimeter 10 provided by the embodiment of the utility model.

[0038] Continuing to refer to Figure 1 In the optional embodiment of the utility model, the quality monitoring component 310 comprises a lifting member 311, a weight sensor 312 and a first support 313, the first support 313 is annular structure, the first support 313 is sleeved on the weighing barrel 100 and is fixedly connected with the weighing barrel 100, the lifting member 311 is arranged below the first support 313, and the weight sensor 312 is arranged between the lifting member 311 and the first support 313. It can be understood that after the bottom of the weighing barrel 100 is opened, the moisture is free to circulate, so that direct weighing cannot be carried out at the bottom of the weighing barrel 100. In the quality monitoring component 310 provided by the embodiment of the utility model, the lifting member 311 will lift the first support 313 from the side of the weighing barrel 100 in the weighing state, the weighing barrel 100 and the to-be-measured soil in the weighing barrel 100 will be suspended, the to-be-measured soil will be separated from the natural soil, and the weight of the weighing barrel 100 and the to-be-measured soil will be all transferred to the weight sensor 312. The weight of the to-be-measured soil can be obtained through the monitoring of the weight sensor 312 and the peeling calculation.

[0039] Continuing to refer to Figure 1 In the optional embodiment of the utility model, the lifting member 311 comprises an annular base 3111 and a plurality of telescopic rods 3112, the annular base 3111 is located below the weighing barrel 100, and the plurality of telescopic rods 3112 are arranged on the annular base 3111 in a uniformly spaced manner. One end of each telescopic rod 3112 is connected with the first support 313, and the weight sensor 312 is arranged between the telescopic rod 3112 and the first support 313. In the weighing state, the telescopic rod 3112 is suitable for lifting the first support 313, so that the to-be-measured soil is suspended. It can be understood that the annular base 3111 is annular structure. On the one hand, the annular base 3111 can support the telescopic rod 3112 and the first support 313, and on the other hand, the annular base 3111 will not interfere with the up-down movement of the weighing barrel 100, so that the moisture movement between the to-be-measured soil and the natural soil can be ensured.

[0040] Continuing to refer to Figure 1In the optional embodiment of the utility model, the quality monitoring component 310 further includes a second supporting piece 314, the shape of the second supporting piece 314 corresponds to the shape of the first supporting piece 313, specifically, the second supporting piece 314 is the same as the shape of the first supporting piece 313, and both are annular structures, the second supporting piece 314 is also sleeved on the weighing barrel 100, and the second supporting piece 314 is also located between the telescopic rod 3112 and the weight sensor 312, in other words, the quality monitoring component 310 is sequentially the first supporting piece 313, the weight sensor 312, the second supporting piece 314, the telescopic rod 3112 and the annular base 3111 from top to bottom, wherein the first supporting piece 313 and the second supporting piece 314 are both sleeved on the outside of the weighing barrel 100.

[0041] Referring to Figure 1 It can be understood that, by arranging the second supporting piece 314, when arranging the weight sensor 312, the position of the telescopic rod 3112 does not have to be considered, that is, the weight sensor 312 does not have to be arranged directly above the telescopic rod 3112, so that the convenience of arranging the weight sensor 312 can be improved.

[0042] Continuing to refer to Figure 1 In the optional embodiment of the utility model, the evapotranspiration instrument 10 further includes a shell 400, the shell 400 is a barrel-shaped stainless steel structure, the bottom and the top of the shell 400 are both open structures, the weighing barrel 100 and the monitoring device are both arranged in the interior of the shell 400, and the shell 400 is used for protecting the weighing barrel 100 and the monitoring assembly 300, and it can be understood that the space between the shell 400 and the weighing barrel 100 can exactly provide lifting space for the quality monitoring component 310, and the interference between the telescopic rod 3112 and the natural soil during movement can be avoided.

[0043] Continuing to refer to Figure 1 The second aspect of the utility model embodiment provides a soil monitoring system, the soil monitoring system includes a remote control device, a weather monitoring device 20, a data acquisition device 30 and the evapotranspiration instrument 10 in any one of the preceding embodiments, the weather monitoring device 20 and the evapotranspiration instrument 10 are electrically connected with the data acquisition device 30, the data acquisition device 30 is wirelessly connected with the remote control device, for example, Bluetooth connection or WiFi connection;The weather monitoring device 20 is used for monitoring environmental rainfall, environmental temperature, environmental wind speed and environmental humidity and other data, the data acquisition device 30 is used for transmitting the environmental rainfall, the environmental temperature, the environmental wind speed, the environmental humidity, the weight of the soil to be measured, the soil water potential of the soil to be measured and the soil moisture of the soil to be measured to the remote control device, and the remote control device is used for calculating the evapotranspiration of the soil to be measured.

[0044] It can be understood that the soil monitoring system provided by the embodiment of the utility model forms an evapotranspiration measurement and calculation system through the meteorological monitoring device 20, the remote control device, the data acquisition device 30 and the lysimeter 10, so that the manual participation in the soil evapotranspiration measurement process can be reduced, on the one hand, the efficiency and accuracy of the evapotranspiration measurement are improved, and on the other hand, the manpower can be reduced, the cost is saved, and the automation of the soil evapotranspiration measurement scheme is improved.

[0045] In the optional embodiment of the utility model, the remote control device comprises a signal receiving module, a data processing module and a display module, the signal receiving module is wirelessly connected with the data acquisition device 30, the data processing module and the signal receiving module and the display module are electrically connected respectively, the data processing module is internally provided with a preset evapotranspiration calculation method, the data processing module is used for calculating the evapotranspiration of the soil to be measured based on the environmental rainfall, the weight of the soil to be measured, the soil water potential of the soil to be measured and the soil moisture of the soil to be measured, and the display module is used for displaying the evapotranspiration of the soil to be measured and the data such as the environmental rainfall, the environmental temperature, the environmental wind speed, the environmental humidity, the weight of the soil to be measured, the soil water potential of the soil to be measured and the soil moisture of the soil to be measured.

[0046] In the optional embodiment of the utility model, the soil monitoring system further comprises a photovoltaic panel 40, the photovoltaic panel 40 is electrically connected with the meteorological monitoring device 20, the data acquisition device 30 and the lysimeter 10 respectively, and the photovoltaic panel 40 is used for supplying power to the meteorological monitoring device 20, the data acquisition device 30 and the lysimeter 10 through the photovoltaic power generation principle, and it can be understood that in this way, the energy consumption can be reduced, and the soil monitoring system can be conveniently arranged in remote areas.

[0047] Figure 2 It is the flowchart of the evapotranspiration calculation method provided by the embodiment of the utility model.

[0048] Referring to Figure 2 The third aspect of the utility model provides a soil evapotranspiration calculation method, and the soil evapotranspiration calculation method can be preset in the aforementioned data processing module, and specifically, the soil evapotranspiration calculation method comprises the following steps:

[0049] S100: obtaining soil moisture movement data to be measured;

[0050] Specifically, the soil moisture movement data to be measured comprises environmental rainfall, the weight of the soil to be measured, the soil water potential of the soil to be measured and the soil moisture of the soil to be measured, and the evapotranspiration of the soil to be measured is calculated, and the data can be obtained through the aforementioned soil monitoring system.

[0051] S200: calculating a corrected leakage amount based on the moisture movement data;

[0052] It should be noted that, in the embodiment of the utility model, the water collecting device in the prior art is omitted, and the natural soil in the test soil and the test field is in contact with each other, so that the corrected leakage (actual leakage) Cannot be directly measured, so the corrected leakage, that is, the leakage in the actual situation, is calculated.

[0053] S300: Based on the water movement data and the corrected leakage, the evapotranspiration of the test soil is calculated by using the evapotranspiration calculation formula.

[0054] The evapotranspiration calculation formula is:

[0055]

[0056] Among them, The evapotranspiration, The precipitation or irrigation amount, which can be monitored by the aforementioned weather station, The corrected leakage, The soil moisture change amount in a period of time, which can be monitored by the aforementioned quality monitoring component 310.

[0057] Referring to Figure 2 It should be noted that, compared with the closed bottom edge of the lysimeter 10 in the prior art, part of the water moves to the test soil through the natural soil in the test field, which will affect the weight of the test soil. These changes will be reflected in By correcting the leakage, the influence of this part of water can be removed, secondary calculation can be avoided, and the actual evapotranspiration of the improved lysimeter 10 can be calculated.

[0058] In an optional embodiment of the utility model, the step of calculating the corrected leakage based on the water movement data comprises:

[0059] The corrected leakage is calculated based on the Darcy law, wherein the Darcy law is:

[0060]

[0061] Among them, The corrected leakage, The corrected soil water conductivity, The cross-sectional area of the infiltration surface, The water pressure head value of the soil lower boundary under the theoretical condition, The corrected soil water head value of the soil lower boundary, The thickness of the soil layer.

[0062] It should be noted that, among them, the cross-sectional area of the infiltration surface The soil layer thickness can be obtained by measuring the diameter of the soil to be measured and calculating The height of the soil to be measured can be obtained by direct measurement, and the calculation can be performed according to the prior art.

[0063] In an optional embodiment of the present application, the step of calculating the corrected leakage amount based on Darcy's law comprises:

[0064] The soil water head value at the lower boundary of the soil is corrected based on a correction formula, wherein the correction formula is:

[0065]

[0066] wherein, is the corrected soil water head value at the lower boundary of the soil, is the water pressure head value at the lower boundary of the soil under a theoretical condition, in other words, is the water pressure head value at the lower boundary of the soil under the closed condition of the weighing barrel 100, that is, is the corrected soil hydraulic conductivity, is the soil hydraulic conductivity under the theoretical condition, that is, the saturated soil hydraulic conductivity at the lower boundary of the model simulation soil.

[0067] It should be noted that the data monitored by the aforementioned soil moisture monitoring component 330 and the soil three-phase ratio and soil bulk density value measured by the indoor test can be used to obtain the corrected soil hydraulic conductivity based on the soil transfer function , specifically, reference can be made to the prior art for calculation, which will not be described hereinafter in the embodiments of the present application; the soil hydraulic conductivity under the theoretical condition can be obtained by combining the indoor test with the soil transfer function, and the implementation process can be realized by referring to the Rosetta module, which is a neural network estimation model. The soil three-phase ratio composition, soil bulk density and field moisture capacity measured by the indoor test are input into the module, and the soil hydraulic conductivity under the theoretical condition can be estimated.

[0068] In an optional embodiment of the present application, the step of correcting the soil water head value at the lower boundary of the soil based on the correction formula comprises:

[0069] The water pressure head value at the lower boundary of the model simulation soil is obtained , specifically, the following formula can be used for calculation:

[0070]

[0071] wherein, is the soil water content, is the saturated soil water content, is the residual soil water content, is the saturated hydraulic conductivity of the soil, is the effective saturated soil water content, and are empirical parameters, is taken as 0.5, is the soil depth, is the soil water pressure head, is the hydraulic conductivity function with respect to the soil water pressure head, is the initial soil water pressure head, is time.

[0072] It should be noted that in the above formula, can be obtained by combining the soil transfer function through indoor test, and the implementation process can be implemented by referring to the Rosetta module, which is a neural network estimation model. The soil three-phase composition, soil bulk density and field water capacity measured by indoor experiment are input into the module to estimate .

[0073] The above estimation results are brought into the aforementioned formula to obtain the soil water content value or soil water pressure head value at a certain position at any time by combining the crank-nicolson algorithm, that is, the water pressure head value at the lower boundary of the soil under the theoretical condition can be obtained.

[0074] Figure 3 An example of an electronic device is shown in the physical structure diagram.

[0075] As Figure 3 shown, the electronic device can include a processor (processor) 810, a communication interface (Communications Interface) 820, a memory (memory) 830 and a communication bus 840, wherein the processor 810, the communication interface 820, the memory 830 complete the communication between each other through the communication bus 840. The processor 810 can call the logical instructions in the memory 830 to execute the calculation method of soil evapotranspiration, which includes:

[0076] S100: obtaining soil water movement data to be measured;

[0077] S200: calculating the corrected leakage based on the water movement data;

[0078] S300: calculating the evapotranspiration of the soil to be measured by using the evapotranspiration calculation formula based on the water movement data and the corrected leakage.

[0079] Moreover, the logic instructions in the memory 830 described above can be realized in the form of software functional units and sold or used as independent products, and can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or say the parts that make contributions to the prior art or parts of the technical solutions can be embodied in the form of software products, and the computer software products are stored in a storage medium, including a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0080] In another aspect, the present application also provides a computer program product, which comprises a computer program, the computer program can be stored on a non-transitory computer readable storage medium, and the computer program is executed by a processor, so that the computer can execute the soil evapotranspiration calculation method provided by the above-mentioned methods, and the method comprises:

[0081] S100: obtaining soil water movement data to be measured;

[0082] S200: calculating a corrected leakage amount based on the water movement data;

[0083] S300: calculating the evapotranspiration of the soil to be measured by using an evapotranspiration calculation formula based on the water movement data and the corrected leakage amount.

[0084] In another aspect, the present application also provides a non-transitory computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the soil evapotranspiration calculation method provided by the above-mentioned methods, and the method comprises:

[0085] S100: obtaining soil water movement data to be measured;

[0086] S200: calculating a corrected leakage amount based on the water movement data;

[0087] S300: calculating the evapotranspiration of the soil to be measured by using an evapotranspiration calculation formula based on the water movement data and the corrected leakage amount.

[0088] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on multiple network units. Part or all of the modules can be selected to achieve the purposes of the embodiments according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0089] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be realized by means of software and necessary general hardware platform, and of course can also be realized by hardware. Based on such understanding, the above technical solutions can be embodied in the form of software products, and the computer software products can be stored in a computer readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and include a plurality of instructions for making a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.

[0090] It should be noted that the technical solutions in each embodiment of the utility model can be combined with each other, but the basis of the combination is that it can be realized by ordinary skilled in the art; when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, that is, it is not within the protection scope of the utility model.

[0091] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of each embodiment of the utility model.

Claims

1. An osmometer characterized in that, The application relates to a soil water potential and soil water content monitoring device. The device comprises a weighing barrel (100) with a first opening and a second opening, the first opening is arranged at the upper end of the weighing barrel (100), and the second opening is arranged at the lower end of the weighing barrel (100); a water-permeable membrane (200) is arranged at the second opening, and the water-permeable membrane (200) is used for assisting water movement of the soil to be measured; and a monitoring assembly (300) is arranged in the weighing barrel (100), and the monitoring assembly (300) is used for monitoring the weight of the soil to be measured, the soil water potential of the soil to be measured and the soil water content of the soil to be measured. The monitoring assembly (300) comprises a mass monitoring component (310) arranged in the weighing barrel (100), the mass monitoring component (310) is used for monitoring the weight of the soil to be measured; a soil water potential monitoring component (320) arranged in the water-permeable membrane (200), the soil water potential monitoring component (320) is used for monitoring the soil water potential of the soil to be measured; and a soil water content monitoring component (330) arranged in the water-permeable membrane (200), the soil water content monitoring component (330) is used for monitoring the soil water content of the soil to be measured. The mass monitoring component (310) comprises a lifting member (311), a weight sensor (312) and a first support (313), the first support (313) is sleeved on the weighing barrel (100) and is fixedly connected with the weighing barrel (100), the lifting member (311) is arranged below the first support (313), and the weight sensor (312) is arranged between the lifting member (311) and the first support (313), in a weighing state, the lifting member (311) is adapted to lift the first support (313) so that the soil to be measured is suspended.

2. The evaporimeter of claim 1, wherein, The lifting member (311) comprises a ring-shaped base (3111) and a telescopic rod (3112), the ring-shaped base (3111) is located below the weighing barrel (100) and corresponds to the position of the first support (313), the telescopic rod (3112) is connected with the ring-shaped base (3111), and the weight sensor (312) is arranged between the telescopic rod (3112) and the first support (313), in a weighing state, the telescopic rod (3112) is adapted to lift the first support (313) and the weighing barrel (100) so that the soil to be measured is suspended. The mass monitoring component (310) further comprises a second support (314), the shape of the second support (314) corresponds to the shape of the first support (313), the second support (314) is sleeved on the weighing barrel (100) and is located between the telescopic rod (3112) and the weight sensor (312). The water-permeable membrane (200) comprises a nylon mesh water-permeable membrane. The device further comprises a shell (400), and the weighing barrel (100) and the monitoring assembly (300) are arranged in the shell (400).

3. The evaporimeter of claim 2 wherein, ​ 4. The evaporimeter of claim 3 wherein, ​ 5. The evaporimeter of claim 4 wherein, ​ 6. The evaporimeter of any one of claims 1 to 5, wherein, ​ 7. The evaporimeter of any one of claims 1 to 5, wherein, ​

Images