CN115618165B - Standard measuring method, device, equipment and medium for soil greenhouse gas emission - Google Patents
Standard measuring method, device, equipment and medium for soil greenhouse gas emission Download PDFInfo
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- 239000005431 greenhouse gas Substances 0.000 title claims abstract description 119
- 239000002689 soil Substances 0.000 title claims abstract description 113
- 238000000034 method Methods 0.000 title claims abstract description 40
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 132
- 239000000618 nitrogen fertilizer Substances 0.000 claims abstract description 112
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 66
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 68
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 claims description 59
- 239000001272 nitrous oxide Substances 0.000 claims description 29
- 238000004364 calculation method Methods 0.000 claims description 17
- 235000015097 nutrients Nutrition 0.000 claims description 14
- 238000000691 measurement method Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000012272 crop production Methods 0.000 abstract description 7
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 239000003337 fertilizer Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000002386 leaching Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000004720 fertilization Effects 0.000 description 3
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- 229910021529 ammonia Inorganic materials 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/007—Determining fertilization requirements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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- G01N33/245—
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/02—Agriculture; Fishing; Mining
Abstract
The invention provides a standard measuring method, a device, equipment and a medium for soil greenhouse gas emission, which relate to the technical field of agriculture and comprise the following steps: acquiring the target yield and the nitrogen content of grains in a target area and the contrast yield of a contrast area; calculating the nitrogen fertilizer application amount of the target yield based on the target yield, the nitrogen content of the grains and the comparison yield; and calculating to obtain the standard soil greenhouse gas emission of the target yield based on the nitrogen fertilizer application amount. According to the invention, the optimal nitrogen fertilizer dosage is determined based on the crop yield, and the standard soil greenhouse gas emission amount of the crop production is calculated based on the optimal nitrogen fertilizer dosage, so that whether the greenhouse gas emission needs to be reduced in the actual production can be easily and quickly judged according to the standard soil greenhouse gas emission amount, the production management scheme is optimized, and the environmental pollution caused by nitrogen loss is reduced to the greatest extent on the basis of ensuring the crop production.
Description
Technical Field
The invention relates to the technical field of agriculture, in particular to a standard measuring method, device, equipment and medium for soil greenhouse gas emission.
Background
The soil greenhouse gas generated in the grain production process has great influence on global carbon emission. The carbon emission of crops in China in 2018 accounts for 45.5 percent of the total carbon emission of national agriculture, wherein the methane CH in the farmland 4 And nitrous oxide N 2 O accounts for 22.9 percent and 14.7 percent of the total agricultural carbon emission respectively. The greenhouse gas emission source of the dry land soil is mainly the application of nitrogen fertilizer which is an essential element for the growth of crops, and the low nitrogen application amount can reduce the emission of the greenhouse gas of the soil but can limit the cropsYield, and excessive nitrogen application reduces nitrogen fertilizer utilization rate, resulting in large amount of N 2 O is discharged, and the environment is polluted. Therefore, on the basis of ensuring the yield, the measuring standard value of the soil greenhouse gas emission amount in the crop field production process is reasonably quantized, and the method is of great importance for reducing the soil greenhouse gas emission and realizing the sustainability of the crop yield and the environmental effect.
Disclosure of Invention
The invention provides a standard measuring method, a device, equipment and a medium for soil greenhouse gas emission, aiming at reasonably quantifying a standard measuring value for soil greenhouse gas emission in the field production process of crops and realizing the sustainability of crop yield and environmental effect.
The invention provides a standard measuring method for soil greenhouse gas emission, which comprises the following steps:
acquiring the target yield and the nitrogen content of grains in a target area and the reference yield of a reference area;
calculating the nitrogen fertilizer application amount of the target yield based on the target yield, the nitrogen content of the grains and the comparison yield;
and calculating to obtain the standard soil greenhouse gas emission amount of the target yield based on the nitrogen fertilizer application amount.
According to the standard measurement method for the emission of the greenhouse gases of the soil provided by the invention, after the standard emission of the greenhouse gases of the soil for obtaining the target yield is calculated based on the application amount of the nitrogen fertilizer, the method further comprises the following steps:
acquiring the current nitrogen fertilizer application amount of the target area;
calculating to obtain the current greenhouse gas emission amount of the soil based on the current nitrogen fertilizer application amount;
comparing the current soil greenhouse gas emission with the standard soil greenhouse gas emission to obtain an emission comparison result;
and adjusting the dosage of the nitrogen fertilizer according to the discharge comparison result.
According to the standard measurement method for the soil greenhouse gas emission provided by the invention, the nitrogen fertilizer application amount of the target yield is calculated based on the target yield, the grain nitrogen content and the comparison yield, and the method comprises the following steps:
calculating to obtain a yield difference value according to the target yield and the reference yield;
calculating the product between the yield difference and the nitrogen content of the grains to obtain the demand of the nitrogen pure nutrients corresponding to the target yield;
and calculating to obtain the nitrogen fertilizer application amount based on the nitrogen pure nutrient demand corresponding to the target yield and a preset nitrogen fertilizer utilization rate.
According to the standard measurement method for the emission of the greenhouse gases of the soil, provided by the invention, the calculation formula of the application amount of the nitrogen fertilizer is as follows:
wherein N is input Representing the application amount of the nitrogen fertilizer, YIeld1 representing the target Yield, YIeld2 representing the comparison Yield, N-grain representing the nitrogen content of the grains, and NUE-N representing the utilization rate of the nitrogen fertilizer.
According to the standard measuring method for the emission of the greenhouse gases of the soil, provided by the invention, the target yield is obtained according to the following steps:
obtaining a plurality of historical crop yields of the target area;
calculating a yield average value among the historical crop yields;
and calculating to obtain the target yield based on the yield average value and a preset yield potential value.
According to the standard measuring method for the soil greenhouse gas emission provided by the invention, the standard soil greenhouse gas emission of the target yield is calculated based on the nitrogen fertilizer application amount, and the method comprises the following steps:
calculating the discharge amount of nitrous oxide based on the nitrogen fertilizer application amount;
calculating the emission amount of methane according to preset methane emission factor parameters;
and calculating to obtain the standard soil greenhouse gas emission according to the nitrous oxide emission and the methane emission.
The invention also provides a standard measuring device for the emission of greenhouse gases in soil, which comprises:
the first acquisition module is used for acquiring the target yield and the nitrogen content of grains in a target area and the contrast yield of a contrast area;
the first calculation module is used for calculating the nitrogen fertilizer application amount of the target yield based on the target yield, the nitrogen content of the grains and the contrast yield;
and the second calculation module is used for calculating the standard soil greenhouse gas emission amount of the target yield based on the nitrogen fertilizer application amount.
The standard measuring device for the emission amount of the greenhouse gases in the soil further comprises:
the second acquisition module is used for acquiring the current nitrogen fertilizer application amount of the target area;
the third calculation module is used for calculating and obtaining the current greenhouse gas emission amount of the soil based on the current nitrogen fertilizer application amount;
the comparison module is used for comparing the current soil greenhouse gas emission with the standard soil greenhouse gas emission to obtain an emission comparison result;
and the adjusting module is used for adjusting the nitrogen fertilizer using amount according to the discharge amount comparison result.
The invention also provides an electronic device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the standard measuring method for the emission amount of the soil greenhouse gases.
The present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a standard measure of soil greenhouse gas emissions as described in any of the above.
According to the standard measurement method, the device, the equipment and the medium for the soil greenhouse gas emission, the optimal nitrogen fertilizer dosage is determined based on the crop yield, and the standard soil greenhouse gas emission of the crop production is calculated based on the optimal nitrogen fertilizer dosage, so that whether the greenhouse gas emission reaches the emission reduction or the excessive emission in the actual production can be rapidly judged according to the standard soil greenhouse gas emission, the production management scheme is optimized, and the environment pollution caused by nitrogen loss is reduced to the maximum extent on the basis of ensuring the crop production.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic flow chart of a standard measurement method for soil greenhouse gas emission provided by the invention;
FIG. 2 is a schematic diagram of a standard measuring device for measuring the amount of greenhouse gases emitted from soil according to the present invention;
fig. 3 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The terminology used in the one or more embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the one or more embodiments of the invention. As used in one or more embodiments of the present invention, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used in one or more embodiments of the present invention refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that, although the terms first, second, etc. may be used herein to describe various information in one or more embodiments of the present invention, such information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, a first can also be referred to as a second and, similarly, a second can also be referred to as a first without departing from the scope of one or more embodiments of the present invention. The word "if" as used herein may be interpreted as "at \8230; \8230when" or "when 8230; \8230when", depending on the context.
FIG. 1 is a schematic flow chart of a standard measurement method for soil greenhouse gas emission provided by the invention. As shown in FIG. 1, the standard measurement method for the emission amount of greenhouse gases in soil comprises the following steps:
it should be noted that a target area and a control area are provided in a large research area, and crops are planted in the target area and in the control area, wherein the types of crops in the control area and the target area are the same, and the control area and the target area are consistent with other management measures except nitrogen fertilizer, that is, the environmental factors such as the soil type, precipitation, temperature and humidity in the control area and the target area are basically the same, the crops in the control area are not applied with nitrogen fertilizer during growth, the crops in the target area are applied with nitrogen fertilizer during growth, and in addition, the areas of the target area and the control area can be set to be the same.
As an implementable manner, specifically, historical crop yields in a preset year of the target area are obtained, the preset year can be set according to actual conditions, preferably, in order to improve the accuracy of calculation, historical crop yields in nearly 3 years or nearly 5 years are selected, then a yield average value corresponding to each historical crop yield is calculated, further, due to yield increase potential brought by water and fertilizer management and effect-enhancing fertilizer, the target yield is calculated based on the yield average value and a preset yield increase potential value, wherein the yield increase potential value can be set according to actual conditions, preferably, the yield increase potential value is set to 5%, and it is required to say that when there is an abnormality in the historical crop yields, for example, the historical crop yields are too low, the historical crop yields need to be rejected. Additionally, the nitrogen content of the grains is determined according to the nitrogen content of the grains in the target area in recent years, specifically, the nitrogen content of the crop grains in each year is measured, and then the average value corresponding to the nitrogen content of the crop grains in recent years is used as the nitrogen content of the grains. Additionally, the control yield of the control area can also be calculated according to the historical crop yield of the control area in recent years, and the calculation process of the control yield is basically the same as that of the target yield, and is not repeated herein.
As another possible implementation manner, the crop yields of the crops from the sowing stage to the maturation stage in the target area and the control area are respectively recorded, the recorded crop yield of the target area is used as the target yield, the recorded crop yield of the control area is used as the control yield, and in addition, the nitrogen content in the crop grains in the target area is measured to obtain the nitrogen content of the grains.
specifically, based on the target yield and the comparison yield, a yield difference value between a target area and the comparison area is calculated, an optimal nitrogen fertilizer application amount is calculated according to the yield difference value, the grain nitrogen content and the nitrogen fertilizer utilization rate, and the optimal nitrogen fertilizer application amount is used as the nitrogen fertilizer application amount required by the target yield.
And step 13, calculating to obtain the standard soil greenhouse gas emission amount of the target yield based on the nitrogen fertilizer application amount.
It is noted that the total amount of agricultural carbon emissions is primarily comprised of carbon dioxide CO 2 Methane CH 4 And nitrous oxide N 2 O, among others, CO emitted by soils and crops 2 Most of the carbon fixation of the plants is counteracted, and in the embodiment of the invention, carbon dioxide CO is used 2 Is negligible, and therefore, the methane CH needs to be calculated 4 And nitrous oxide N 2 O emission, alternatively, dry crops do not take methane CH into account 4 Is discharged.
Specifically, based on the nitrogen fertilizer application amount corresponding to the target yield, a preset greenhouse gas emission accounting method is combined, the emission amount of nitrous oxide and the emission amount of methane are calculated, wherein the greenhouse gas emission accounting method comprises a method of an emission factor method, a method of monitoring greenhouse gases through monitoring equipment such as nitrous oxide and methane, and the like, and further based on the emission amount of nitrous oxide and the emission amount of methane obtained through calculation, standard soil greenhouse gas emission amount corresponding to the target yield is calculated.
In addition, nitrogen fertilizer application amounts with different target yields can be calculated according to a plurality of different target yields, so that standard soil greenhouse gas emission amounts with different target yields can be calculated, and whether greenhouse gas emission reaches emission reduction or excessive conditions in actual production can be quickly judged according to the standard soil greenhouse gas emission amounts with different target yields.
In addition, the embodiment of the present invention is applicable to not only food crops but also crops such as fruits, vegetables, and the like.
According to the scheme, the target yield and the nitrogen content of the grains in the target area and the contrast yield of the contrast area are obtained; calculating the nitrogen fertilizer application amount of the target yield based on the target yield, the nitrogen content of the grains and the control yield; and calculating to obtain the standard soil greenhouse gas emission of the target yield based on the nitrogen fertilizer application amount. The method realizes the determination of the optimal nitrogen fertilizer dosage based on the crop yield and then calculates and obtains the standard soil greenhouse gas emission amount of the crop production based on the optimal nitrogen fertilizer dosage, thereby easily judging whether the greenhouse gas emission in the actual production reaches the condition of emission reduction or excess, optimizing the production management scheme, and further reducing the environmental pollution caused by nitrogen to the maximum extent on the basis of ensuring the crop production.
In an embodiment of the present invention, the step 12: calculating the nitrogen fertilizer application amount of the target yield based on the target yield, the nitrogen content of the grains and the control yield, wherein the nitrogen fertilizer application amount comprises the following steps:
calculating to obtain a yield difference value according to the target yield and the reference yield; calculating the product between the yield difference and the nitrogen content of the grains to obtain the demand of the nitrogen pure nutrients corresponding to the target yield; and calculating to obtain the nitrogen fertilizer application amount based on the nitrogen pure nutrient demand corresponding to the target yield and the preset nitrogen fertilizer utilization rate.
It should be noted that the nitrogen fertilizer utilization rates corresponding to different fertilization modes are different, for example, the range of the nitrogen fertilizer utilization rate of the dropper or the spray irrigation is 50% to 70%, and the range of the nitrogen fertilizer utilization rate of the broadcasting or the furrow application is 30% to 35%, preferably, in the embodiment, the nitrogen fertilizer utilization rate of the dropper or the spray irrigation is set to 60%, and the nitrogen fertilizer utilization rate of the broadcasting or the furrow application is set to 33%.
Specifically, a difference value between the target yield and the reference yield is calculated to obtain the yield difference value, a product between the yield difference value and the nitrogen content of the grains is calculated to use a product result as the demand of the pure nitrogen nutrients, and the application amount of the nitrogen fertilizer is calculated based on the demand of the pure nitrogen nutrients and a preset nitrogen fertilizer utilization rate. Wherein the formula for calculating the nitrogen fertilizer application amount is as follows:
wherein, N input Represents the nitrogen fertilizer application amount, yield1 represents the target Yield, yield2 represents the control Yield, and N-grain representsThe nitrogen content of the grains, NUE-N, represents the nitrogen fertilizer utilization rate.
According to the scheme, the yield difference is calculated according to the target yield and the comparison yield; calculating the product between the yield difference and the nitrogen content of the grains to obtain the demand of the nitrogen pure nutrients corresponding to the target yield; and calculating to obtain the nitrogen fertilizer application amount based on the nitrogen pure nutrient demand corresponding to the target yield and the preset nitrogen fertilizer utilization rate. The optimal nitrogen fertilizer application amount corresponding to the target yield is calculated according to the target yield, the nitrogen content of the grains and the contrast yield, so that the environmental pollution caused by nitrogen loss can be reduced to the maximum extent on the basis of ensuring the crop production yield.
In an embodiment of the present invention, the step 13: calculating to obtain the standard soil greenhouse gas emission of the target yield based on the nitrogen fertilizer application amount, wherein the method comprises the following steps:
calculating the discharge amount of nitrous oxide based on the nitrogen fertilizer application amount; calculating the emission amount of methane according to preset methane emission factor parameters; and calculating to obtain the standard soil greenhouse gas emission according to the nitrous oxide emission and the methane emission.
In addition, N is 2 The emission amount of O includes N 2 Direct discharge of O and indirect discharge caused by ammonia volatilization and nitrogen leaching.
Specifically, the N is calculated and obtained based on the nitrogen fertilizer application amount and a preset direct emission factor 2 Direct emission amount of nitrous oxide, wherein the direct emission factor setting is 0.01, and a calculation formula of the direct emission amount of nitrous oxide is as follows:
F DN2O =N input *EF N1 *44/28
wherein, F DN2O Represents the direct discharge amount of the nitrous oxide, and the unit is kilogram/mu, N input Denotes the amount of nitrogen fertilizer applied, EF N1 Representing the direct emission factor.
Additionally, based on the nitrogenCalculating the application amount of the fertilizer, the preset volatilization rate, a first indirect emission factor, farmland leaching and runoff rate and a second indirect emission factor to obtain the indirect emission of nitrous oxide, wherein the volatilization rate represents farmland ammonia or NO x Is set to 10%, the first indirect emission factor represents N caused by nitrogen precipitation 2 O indirect discharge factor is set to be 0.01, farmland leaching and runoff rate are set to be 20%, and the second indirect discharge factor represents N caused by leaching runoff 2 The indirect O emission factor is set to 0.0075. The calculation formula of the indirect emission of nitrous oxide is as follows:
F IDN2O =N input *F G *EF N2 *44/28+N input *F L *EF N3 *44/28
wherein, F IDN2O The unit of the indirect discharge of nitrous oxide is kilogram/mu and N input Denotes the amount of nitrogen application, F G Denotes the volatility, EF N2 Represents a first indirect emission factor, F L Indicating the field eluviation and runoff rate, EF N3 Representing a second indirect drainage factor.
And adding the indirect emission of the nitrous oxide and the direct emission of the nitrous oxide to obtain the emission of the nitrous oxide. And additionally, calculating the methane emission according to preset methane emission factor parameters. It should be noted that, the methane emission factor parameters in different areas are different, and the calculation formula is as follows:
F CH4 =EF CH4 /15
wherein, F CH4 Indicating the amount of methane discharged, EF CH4 Representing a methane emission factor parameter.
Further, calculating to obtain the standard soil greenhouse gas emission according to the nitrous oxide emission and the methane emission, wherein a standard soil greenhouse gas emission calculation formula is as follows:
F C =（F DN2O + F IDN2O ）*298+ F CH4 *25
wherein, F DN2O Representing direct emission of nitrous oxideAmount, F IDN2O Denotes the indirect emission of nitrous oxide, F CH4 Indicating methane emissions.
According to the scheme, the discharge amount of nitrous oxide is calculated based on the nitrogen fertilizer application amount; calculating the emission amount of methane according to preset methane emission factor parameters; and calculating to obtain the standard soil greenhouse gas emission according to the nitrous oxide emission and the methane emission. The method realizes calculation to obtain the standard soil greenhouse gas emission amount corresponding to the target yield according to the nitrogen fertilizer application amount with the best target yield, so that whether greenhouse gas emission needs to be reduced in actual production is judged according to the standard soil greenhouse gas emission amount, and the production management scheme is optimized.
In one embodiment of the present invention, in step 13 above: after calculating the standard soil greenhouse gas emission amount of the target yield based on the nitrogen fertilizer application amount, the method further comprises the following steps:
acquiring the current nitrogen fertilizer application amount of the target area; calculating to obtain the current greenhouse gas emission amount of the soil based on the current nitrogen fertilizer application amount; comparing the current soil greenhouse gas emission with the standard soil greenhouse gas emission to obtain an emission comparison result; and adjusting the dosage of the nitrogen fertilizer according to the discharge comparison result.
Specifically, in the actual production process of subsequent crops, if a user desires to obtain a crop with a target yield, the current nitrogen fertilizer application amount of the target area can be obtained, then based on the current nitrogen fertilizer application amount, the target emission amount of nitrous oxide and the target emission amount of methane are calculated, and then based on the target emission amount of nitrous oxide and the target emission amount of methane, the current soil greenhouse gas emission amount is calculated, wherein the calculation process of the current soil greenhouse gas emission amount and the standard soil greenhouse gas emission amount is basically the same, and is not repeated here. And further, comparing the current soil greenhouse gas emission with the standard soil greenhouse gas emission to obtain an emission comparison result, and if the current soil greenhouse gas emission in the emission comparison result is higher than the standard soil greenhouse gas emission, verifying that a fertilization scheme and a planting management scheme need to be optimized, so that the input of fertilizers is reduced. If the current soil greenhouse gas emission is equal to the standard soil greenhouse gas emission, the nitrogen fertilizer dosage in the research area does not need to be adjusted. If the current greenhouse gas emission of the soil is lower than the standard greenhouse gas emission of the soil, the investment of fertilizer needs to be properly increased so as to promote the growth of crops and improve the yield of the crops.
In the embodiment, by the scheme, namely, the current nitrogen fertilizer application amount of the target area is obtained; calculating to obtain the current greenhouse gas emission amount of the soil based on the current nitrogen fertilizer application amount; comparing the current soil greenhouse gas emission with the standard soil greenhouse gas emission to obtain an emission comparison result; and adjusting the dosage of the nitrogen fertilizer according to the discharge comparison result. The current soil greenhouse gas emission in the target area is compared with the standard soil greenhouse gas emission of the target yield, so that the nitrogen fertilizer using amount is adjusted, the optimization of the fertilization scheme and the planting management scheme is adjusted according to the emission comparison result, the growth of crops is promoted, and the yield of the crops reaches the target yield.
The standard measuring device for the emission amount of greenhouse gases in soil provided by the invention is described below, and the standard measuring device for the emission amount of greenhouse gases in soil described below and the standard measuring method for the emission amount of greenhouse gases in soil described above can be referred to correspondingly.
Fig. 2 is a schematic structural diagram of a device for measuring soil greenhouse gas emission according to the present invention, and as shown in fig. 2, the device for measuring soil greenhouse gas emission according to an embodiment of the present invention comprises:
a first obtaining module 21, configured to obtain a target yield and a grain nitrogen content of a target region, and a reference yield of a reference region;
a first calculating module 22, configured to calculate a nitrogen fertilizer application amount of the target yield based on the target yield, the nitrogen content of the grains, and the control yield;
and the second calculating module 23 is used for calculating the standard soil greenhouse gas emission amount of the target yield based on the nitrogen fertilizer application amount.
The standard measuring device for the emission amount of the greenhouse gases in the soil further comprises:
the second acquisition module is used for acquiring the current nitrogen fertilizer application amount of the target area;
the third calculation module is used for calculating and obtaining the current greenhouse gas emission amount of the soil based on the current nitrogen fertilizer application amount;
the comparison module is used for comparing the current soil greenhouse gas emission with the standard soil greenhouse gas emission to obtain an emission comparison result;
and the adjusting module is used for adjusting the nitrogen fertilizer using amount according to the discharge amount comparison result.
The first computing module 22 is further configured to:
calculating to obtain a yield difference value according to the target yield and the reference yield;
calculating the product between the yield difference and the nitrogen content of the grains to obtain the demand of the nitrogen pure nutrients corresponding to the target yield;
and calculating to obtain the nitrogen fertilizer application amount based on the nitrogen pure nutrient demand corresponding to the target yield and the preset nitrogen fertilizer utilization rate.
The first computing module 22 is further configured to:
the formula for calculating the application amount of the nitrogen fertilizer is as follows:
wherein, N input Representing the application amount of the nitrogen fertilizer, representing Yield1 as the target Yield, representing Yield2 as the control Yield, representing nitrogen content of the grains by N-grain, and representing the utilization rate of the nitrogen fertilizer by NUE-N.
The second calculating module 23 is further configured to:
calculating the discharge amount of nitrous oxide based on the nitrogen fertilizer application amount;
calculating the emission amount of methane according to preset methane emission factor parameters;
and calculating to obtain the standard soil greenhouse gas emission according to the nitrous oxide emission and the methane emission.
It should be noted that, the apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.
Fig. 3 is a schematic structural diagram of an electronic device provided in the present invention, and as shown in fig. 3, the electronic device may include: a processor (processor) 310, a memory (memory) 320, a communication Interface (Communications Interface) 330 and a communication bus 340, wherein the processor 310, the memory 320 and the communication Interface 330 communicate with each other via the communication bus 340. The processor 310 may invoke logic instructions in the memory 320 to perform a standard measure of soil greenhouse gas emissions, the method comprising: acquiring the target yield and the nitrogen content of grains in a target area and the contrast yield of a contrast area; calculating the nitrogen fertilizer application amount of the target yield based on the target yield, the nitrogen content of the grains and the comparison yield; and calculating to obtain the standard soil greenhouse gas emission of the target yield based on the nitrogen fertilizer application amount.
In addition, the logic instructions in the memory 320 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention or a part thereof which substantially contributes to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program that when executed by a processor performs a method for performing a standard measure of soil greenhouse gas emissions provided by the methods described above, the method comprising: acquiring the target yield and the nitrogen content of grains in a target area and the contrast yield of a contrast area; calculating the nitrogen fertilizer application amount of the target yield based on the target yield, the nitrogen content of the grains and the comparison yield; and calculating to obtain the standard soil greenhouse gas emission amount of the target yield based on the nitrogen fertilizer application amount.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A standard measurement method for soil greenhouse gas emission is characterized by comprising the following steps:
acquiring the target yield and the nitrogen content of grains in a target area and the contrast yield of a contrast area;
calculating the nitrogen fertilizer application amount of the target yield based on the target yield, the nitrogen content of the grains and the comparison yield;
calculating to obtain the standard soil greenhouse gas emission of the target yield based on the nitrogen fertilizer application amount;
calculating the nitrogen fertilizer application amount of the target yield based on the target yield, the nitrogen content of the grains and the control yield, wherein the calculating comprises the following steps:
calculating to obtain a yield difference value according to the target yield and the reference yield;
calculating the product between the yield difference and the nitrogen content of the grains to obtain the demand of the nitrogen pure nutrients corresponding to the target yield;
and calculating to obtain the nitrogen fertilizer application amount based on the nitrogen pure nutrient demand corresponding to the target yield and a preset nitrogen fertilizer utilization rate.
2. The method for measuring soil greenhouse gas emission according to claim 1, wherein after calculating the standard soil greenhouse gas emission for the target yield based on the nitrogen fertilizer application rate, the method further comprises:
acquiring the current nitrogen fertilizer application amount of the target area;
calculating to obtain the current greenhouse gas emission amount of the soil based on the current nitrogen fertilizer application amount;
comparing the current soil greenhouse gas emission with the standard soil greenhouse gas emission to obtain an emission comparison result;
and adjusting the dosage of the nitrogen fertilizer according to the discharge comparison result.
3. The method for measuring soil greenhouse gas emission according to claim 1, wherein the formula for calculating the application amount of the nitrogen fertilizer is as follows:
wherein Ninput represents the nitrogen fertilizer application amount, yield1 represents the target Yield, yield2 represents the comparison Yield, N-grain represents the nitrogen content of the grains, and NUE-N represents the nitrogen fertilizer utilization rate.
4. The method for measuring soil greenhouse gas emission according to claim 1, wherein the target yield is obtained according to the following steps:
obtaining a plurality of historical crop yields of the target area;
calculating a yield average value among the historical crop yields;
and calculating to obtain the target yield based on the yield average value and a preset yield potential value.
5. The method for measuring soil greenhouse gas emission according to claim 1, wherein the step of calculating the standard soil greenhouse gas emission for obtaining the target yield based on the nitrogen fertilizer application amount comprises:
calculating the discharge amount of nitrous oxide based on the nitrogen fertilizer application amount;
calculating the emission amount of methane according to preset methane emission factor parameters;
and calculating to obtain the standard soil greenhouse gas emission according to the nitrous oxide emission and the methane emission.
6. A device for measuring soil greenhouse gas emission, comprising:
the first acquisition module is used for acquiring the target yield and the nitrogen content of grains in a target area and the contrast yield of a contrast area;
the first calculation module is used for calculating the nitrogen fertilizer application amount of the target yield based on the target yield, the nitrogen content of the grains and the contrast yield;
the second calculation module is used for calculating and obtaining the standard soil greenhouse gas emission amount of the target yield based on the nitrogen fertilizer application amount;
the first computing module is further to:
calculating to obtain a yield difference value according to the target yield and the reference yield;
calculating the product between the yield difference and the nitrogen content of the grains to obtain the demand of the nitrogen pure nutrients corresponding to the target yield;
and calculating to obtain the nitrogen fertilizer application amount based on the nitrogen pure nutrient demand corresponding to the target yield and a preset nitrogen fertilizer utilization rate.
7. The device for measuring the emission of greenhouse gases from soil as claimed in claim 6, wherein the device for measuring the emission of greenhouse gases from soil further comprises:
the second acquisition module is used for acquiring the current nitrogen fertilizer application amount of the target area;
the third calculation module is used for calculating and obtaining the current greenhouse gas emission amount of the soil based on the current nitrogen fertilizer application amount;
the comparison module is used for comparing the current soil greenhouse gas emission with the standard soil greenhouse gas emission to obtain an emission comparison result;
and the adjusting module is used for adjusting the using amount of the nitrogen fertilizer according to the discharge amount comparison result.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executed on the processor, wherein the processor when executing the program implements the method for measuring soil greenhouse gas emission according to any one of claims 1 to 5.
9. A non-transitory computer readable storage medium having a computer program stored thereon, wherein the computer program when executed by a processor implements a standard measure of soil greenhouse gas emissions as claimed in any one of claims 1 to 5.
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| CN107660368B (en) * | 2017-11-09 | 2021-05-11 | 中国农业科学院农业资源与农业区划研究所 | Spring corn fertilizing method |
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| WO2022125834A1 (en) * | 2020-12-09 | 2022-06-16 | Board Of Trustees Of Michigan State University | Reduction of nitrogen greenhouse gas emissions in agroecosystems for precision conservation |
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