CN116485573A - Tobacco field irrigation prescription chart generation method and device - Google Patents
Tobacco field irrigation prescription chart generation method and device Download PDFInfo
- Publication number
- CN116485573A CN116485573A CN202310335560.1A CN202310335560A CN116485573A CN 116485573 A CN116485573 A CN 116485573A CN 202310335560 A CN202310335560 A CN 202310335560A CN 116485573 A CN116485573 A CN 116485573A
- Authority
- CN
- China
- Prior art keywords
- irrigation
- tobacco
- water content
- soil
- field
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 136
- 230000002262 irrigation Effects 0.000 title claims abstract description 112
- 238000003973 irrigation Methods 0.000 title claims abstract description 112
- 238000000034 method Methods 0.000 title claims abstract description 58
- 244000061176 Nicotiana tabacum Species 0.000 title description 2
- 239000002689 soil Substances 0.000 claims abstract description 152
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 145
- 241000208125 Nicotiana Species 0.000 claims abstract description 134
- 238000004364 calculation method Methods 0.000 claims abstract description 62
- 230000008020 evaporation Effects 0.000 claims abstract description 47
- 238000001704 evaporation Methods 0.000 claims abstract description 47
- 238000010586 diagram Methods 0.000 claims abstract description 16
- 238000003860 storage Methods 0.000 claims abstract description 13
- 238000004458 analytical method Methods 0.000 claims abstract description 8
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 238000001556 precipitation Methods 0.000 claims description 37
- 241000196324 Embryophyta Species 0.000 claims description 12
- 238000004590 computer program Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 230000005068 transpiration Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000003621 irrigation water Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001766 physiological effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- G01N33/246—Earth materials for water content
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/16—Control of watering
-
- 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
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0631—Resource planning, allocation, distributing or scheduling for enterprises or organisations
- G06Q10/06315—Needs-based resource requirements planning or analysis
-
- 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—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/02—Agriculture; Fishing; Forestry; Mining
Landscapes
- Business, Economics & Management (AREA)
- Engineering & Computer Science (AREA)
- Human Resources & Organizations (AREA)
- Life Sciences & Earth Sciences (AREA)
- Strategic Management (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Economics (AREA)
- Tourism & Hospitality (AREA)
- Chemical & Material Sciences (AREA)
- General Business, Economics & Management (AREA)
- Theoretical Computer Science (AREA)
- Marketing (AREA)
- Entrepreneurship & Innovation (AREA)
- General Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Remote Sensing (AREA)
- Animal Husbandry (AREA)
- Marine Sciences & Fisheries (AREA)
- Mining & Mineral Resources (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Primary Health Care (AREA)
- Food Science & Technology (AREA)
- Agronomy & Crop Science (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Development Economics (AREA)
- Educational Administration (AREA)
- Environmental & Geological Engineering (AREA)
- Game Theory and Decision Science (AREA)
- Operations Research (AREA)
- Quality & Reliability (AREA)
- Water Supply & Treatment (AREA)
- Environmental Sciences (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The application provides a tobacco field irrigation prescription diagram generation method and device, which belong to the field of tobacco field management and comprise the following steps: collecting the current soil water content of a tobacco field to be treated and acquiring meteorological data; measuring the field maximum water holding capacity of the tobacco field to be treated by adopting a cutting ring method, and calculating the optimum soil water content range and the lower limit of the soil water content requirement for tobacco growth by combining the water storage rule of tobacco varieties in the tobacco field to be treated; substituting the meteorological data into an EToCalmulator tool to calculate the reference crop evaporation amount so as to calculate the actual crop evaporation amount by using a single crop coefficient method; and comparing and analyzing the current soil water content with the water content range and the lower limit of the demand, calculating the irrigation quantity according to the analysis result by a preset irrigation calculation method, summarizing the calculation result of the irrigation quantity, and generating an irrigation prescription diagram of the tobacco field to be treated. The scheme aims at details such as the water quantity of irrigation and the like in the irrigation prescription diagram generated by the tobacco fields to be treated, so that farmers can be helped to better manage the tobacco fields, and the yield and the quality are improved.
Description
Technical Field
The invention belongs to the field of tobacco field management, and particularly relates to a tobacco field irrigation prescription chart generation method and device.
Background
Tobacco is an important cash crop in China, and the planting area and the tobacco yield are the first in the world. Moisture is one of important ecological factors affecting the growth and development of tobacco leaves and the quality of tobacco leaves, and can effectively regulate and control the yield and quality of tobacco leaves.
Insufficient or excessive water can seriously affect the growth and development of tobacco leaves and the quality of the tobacco leaves, and the improper irrigation period can reduce the yield and quality of the tobacco leaves and even aggravate the occurrence of tobacco diseases.
The smoke Tian Guanshui prescription chart is a reasonable irrigation plan and scheme chart which is formulated by indicating different irrigation conditions and requirements of a tobacco field. Details of irrigation time, water quantity and the like are generally included in the chart, so that farmers can be helped to better manage tobacco fields, and yield and quality are improved.
The prior art discloses an irrigation prescription map inversion method (patent application number: CN 202110078410.8) based on unmanned aerial vehicle spectral data, which comprises the following steps: (1) remote sensing data acquisition; extracting crop information of the remote sensing image; (3) estimating the space-time distribution of the field evapotranspiration; (4) field data acquisition: the unmanned aerial vehicle is subjected to field sampling synchronously on the flight day, so that the soil moisture absorption layer of the soil root system can be effectively utilized, and the soil moisture content and the field water holding capacity are obtained; (5) The irrigation prescription map is inverted by combining historical meteorological irrigation data, real-time thermal infrared, multispectral high-resolution remote sensing image data and soil moisture information data of a ground sensor with different irrigation technologies.
According to the scheme, the water filling amount required by each growth period of crops is determined by combining historical meteorological data with other data, however, specific meteorological conditions are different each year, when actual water filling is carried out, whether water is lacking currently cannot be considered, and the condition of precipitation in a future period of time is considered, otherwise, the condition of just-filled water, just-filled water precipitation and the like are extremely likely to occur, so that excessive water content in a field is caused, and especially the influence on crops which are intolerant to waterlogging is huge; the evaporation is calculated based on the remote sensing data and Qwater model, and the remote sensing data is difficult to continuously observe in one day, so that the calculated evaporation amount is usually only the result of a specific moment, and the calculated evaporation amount is difficult to represent the evaporation amount of each moment in the whole day, thereby reducing the calculation accuracy of the irrigation amount; in addition, the scheme needs unmanned aerial vehicle multispectral equipment, thermal infrared equipment, flux towers and other supports, has high cost, and is difficult to popularize and apply in actual production.
Disclosure of Invention
The application provides a tobacco field irrigation prescription diagram generation method and device, and aims to solve the problems that in the existing farmland irrigation technology, future water reduction conditions are not considered by combining with meteorological data, calculated water irrigation quantity accuracy is low, excessive soil moisture is easily caused to damage crops and water resource waste, equipment cost required by an implementation scheme is high, and popularization and application are difficult in actual production.
In order to achieve the above purpose, the present solution adopts the following technical solution, including:
collecting the current soil water content of the tobacco field to be treated and acquiring meteorological data of the tobacco field to be treated;
measuring the field maximum water holding capacity of the tobacco field to be treated by adopting a cutting ring method, and calculating the optimum soil water content range and the lower limit of the soil water content requirement for tobacco growth by combining the water storage rule of tobacco varieties in the tobacco field to be treated;
substituting the meteorological data into an EToCalmulator tool to calculate the reference crop evaporation amount so as to calculate the actual crop evaporation amount by using a single crop coefficient method;
and comparing and analyzing the current soil water content with the optimum soil water content range and the lower limit of the soil water content requirement, calculating the irrigation quantity by a preset irrigation calculation method according to the analysis result and combining the actual evaporation quantity of crops, and summarizing the calculation result of the irrigation quantity to generate an irrigation prescription diagram of the tobacco field to be treated.
Preferably, the irrigation calculation method is preset, specifically:
a. judging whether the current soil water content is greater than or equal to the optimal soil water content range, if so, not filling water; if not, executing the step b;
b. judging whether the current soil water content is greater than the lower limit of the soil water content requirement, if so, executing the step c; if not, obtaining a first irrigation quantity calculation result according to a preset first calculation formula;
c. judging whether the final water content of the first soil before the cut-off precipitation is larger than the lower limit of the soil water content requirement according to the current soil water content, the actual crop evaporation amount and the meteorological data, if so, executing e, and if not, executing d;
d. judging whether the final water content of the second soil after precipitation is in the range of the water content of the most suitable soil according to the precipitation amount of the meteorological data, if so, obtaining a second irrigation amount calculation result according to a preset second calculation formula; if not, obtaining a third irrigation quantity calculation result according to a preset third calculation formula;
e. judging whether the final water content of the second soil after precipitation is in the range of the water content of the most suitable soil or not by combining the precipitation amount, and if so, not irrigating; if not, obtaining a fourth irrigation quantity calculating result according to a preset fourth calculation formula.
Preferably, the first calculation formula is preset asWherein W is 1 For a first irrigation quantity, W upper And W is lower Respectively the upper limit and the lower limit of the optimum soil water content range, W soil Is the current soil moisture content.
Preferably, the second calculation formula is preset asWherein W is 2 For a second irrigation quantity, W base As the basic irrigation quantity, W min Is the lower limit of the water content requirement of the soil, t1 is the precipitation occurrence time, ET c The actual evaporation amount for crops;
presetting a third calculation formula asWherein W is 3 For the third irrigation quantity, W pre And t2 is the precipitation ending time.
Preferably, the fourth calculation formula is preset asWherein W is 4 And the fourth irrigation amount.
Preferably, the optimal soil moisture content range and the lower limit of the soil moisture content requirement for tobacco growth are calculated by combining the water storage rule of tobacco varieties in a tobacco field to be treated, and the soil moisture content range and the lower limit of the soil moisture content requirement are specifically as follows: and multiplying the soil relative humidity range and the drought index/soil relative humidity minimum requirement suitable for tobacco growth by the field maximum water holding capacity respectively to obtain the optimum soil water content range and the soil water content requirement lower limit.
Preferably, the formula for calculating the actual evaporation amount of the crops by using a single crop coefficient method is ET C ＝K C *ET 0 Wherein ET is 0 ET for reference crop evaporation C K is the actual evaporation quantity of crops C Is the coefficient of the crop and is used for the control of the plant,A f represents the average wet soil evaporation factor, K cb Representing the coefficient of the flue-cured tobacco base crop.
A tobacco field irrigation prescription map generating device, comprising:
the basic data acquisition module: the method comprises the steps of collecting the current soil water content of the tobacco field to be treated and obtaining meteorological data of the tobacco field to be treated;
the soil water content threshold value calculating module: the method is used for measuring the field maximum water holding capacity of the tobacco field to be treated by adopting a cutting ring method, and calculating the optimum soil water content range and the lower limit of the soil water content requirement for tobacco growth by combining the water storage rule of tobacco varieties in the tobacco field to be treated;
the evapotranspiration amount calculation module: the method comprises the steps of substituting meteorological data into an EToCalmulator tool to calculate reference crop evaporation amount, so that the actual crop evaporation amount is calculated by using a single crop coefficient method;
irrigation prescription map generation module: and comparing and analyzing the current soil moisture content with the optimum soil moisture content range and the lower limit of the soil moisture content requirement, calculating the irrigation quantity by a preset irrigation calculation method according to the analysis result and combining the actual evaporation quantity of crops, and summarizing the calculation result of the irrigation quantity to generate an irrigation prescription diagram of the tobacco field to be treated.
An electronic device comprising a memory and a processor, the memory for storing one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement a tobacco field irrigation prescription map generation method as described in any of the above.
A computer-readable storage medium storing a computer program which when executed by a computer implements a tobacco field irrigation prescription map generation method as described in any one of the above.
The invention has the following beneficial effects:
(1) Tobacco is a crop which is not resistant to waterlogging, and the growth of the crop is greatly influenced when the soil is excessively wet, the scheme not only considers the current water shortage condition of a field, but also combines weather forecast data, considers the water consumption and the water precipitation condition in a period of time in the future, and formulates corresponding water filling strategies aiming at different weather conditions, thereby avoiding the conditions of damaging the crop and wasting water resources due to the excessive soil moisture of a tobacco field;
(2) The accuracy of the daily evapotranspiration calculated by adopting a meteorological data Penman-Monteth formula is widely verified worldwide, the calculated evapotranspiration can more represent the actual evapotranspiration condition of the day, and the numerical accuracy is higher;
(3) The scheme only needs the support of soil water content measuring equipment, has low cost and easy popularization, and is suitable for crops planted in small plots in the south mountain land, such as tobacco;
(4) The scheme aims at details such as water quantity of irrigation included in an irrigation prescription graph generated by the tobacco field to be treated, the moisture content of soil of the tobacco field can be monitored in real time, tobacco is ensured to grow in an optimal moisture environment, farmers can be helped to better manage the tobacco field, and yield and quality are improved.
Drawings
FIG. 1 is a flow chart of a method for generating a tobacco field irrigation prescription map in the invention
FIG. 2 is a schematic diagram of the embodiment of the invention in example 1
FIG. 3 is a schematic view showing the field moisture cycle process in example 1 of the present invention
FIG. 4 is a schematic diagram of a tobacco field irrigation prescription graph generating device according to the present invention
Detailed Description
Example 1
As shown in fig. 1, a tobacco field irrigation prescription diagram generating method comprises the following steps:
s11, collecting the current soil water content of the tobacco field to be processed and acquiring meteorological data of the tobacco field to be processed;
s12, measuring the field maximum water holding capacity of the tobacco field to be treated by adopting a cutting ring method, and calculating the optimum soil water content range and the lower limit of the soil water content requirement for tobacco growth by combining the water storage rule of tobacco varieties in the tobacco field to be treated;
s13, substituting meteorological data into an EToCalculator tool to calculate the reference crop evaporation amount so as to calculate the actual crop evaporation amount by using a single crop coefficient method;
s14, comparing and analyzing the current soil moisture content with the optimum soil moisture content range and the lower limit of the soil moisture content requirement, calculating the irrigation quantity by a preset irrigation calculation method according to the analysis result and combining the actual evaporation quantity of crops, and summarizing the irrigation quantity calculation result to generate an irrigation prescription diagram of the tobacco field to be treated.
The specific scheme in this embodiment is as follows: the actual content of the current moisture of the tobacco field and the consumption and precipitation conditions of the tobacco field in a future period are comprehensively considered, the characteristic of 'relative drought resistance and waterlogging resistance' of the tobacco field is fully considered by combining the water demand law of the tobacco field in different periods, and the tobacco field irrigation prescription graph generation method aiming at different conditions is designed by utilizing the actual measurement data of the soil moisture of the tobacco field and the gas image data, wherein the thinking guide graph of the scheme is shown in figure 2, and the specific flow is as follows:
0. basic theory of
First, before the description of the method for generating the irrigation prescription map, the description of the principle is performed so as to facilitate understanding of the generation process of the irrigation prescription map.
The path of field moisture consumption can be divided into five parts: plant transpiration, inter-plant evaporation, deep or field seepage, surface runoff, forming part of the plant body. And the field water supply can come from precipitation, irrigation and groundwater supply. The process of field moisture cycling is shown in figure 3.
The water demand of crops refers to the water required by crops growing on a large area without plant diseases and insect pests under the condition that high yield potential can be obtained in a given growing environment when the soil moisture and fertility are proper, and the water is required by transpiration of plants, evaporation among plants and composition of plant bodies. In practice, the water content of the plant body is only a very small part (generally less than 1%) of the total water demand, and the influence factor of the small part is complex and difficult to calculate accurately, so that the part is usually ignored, i.e. the water demand of the crops is considered to be equal to the sum of the transpiration amount of the plants and the evaporation amount among the plants, i.e. the so-called transpiration ET.
In addition, tobacco is a dry field crop, surface runoff and deep leakage water of the tobacco field are often negligible, and the vast majority of related documents of tobacco field water at present ignore deep leakage and groundwater rising supply.
Therefore, in the case of tobacco fields, the exchange of moisture with the outside mainly takes into consideration four aspects, namely, the evapotranspiration ET, the soil moisture content, precipitation and irrigation. The values of the first three are calculated, and the water irrigation quantity required in a certain period can be known by combining the water requirements of different varieties of tobacco in different growth stages in different areas.
1. Data acquisition and preprocessing
1.1 soil moisture data acquisition and pretreatment
Firstly, setting a plurality of soil moisture content data sampling points in a field (namely a tobacco field to be treated), arranging sampling points which are as many as possible and uniformly distributed, arranging sampling points on ridges and furrows, recording space coordinates of the sampling points, measuring the soil moisture content of the same depth of each sampling point by using a portable soil moisture content measuring instrument, wherein the measuring time is the current moment, and finally, performing spatial interpolation on soil moisture content data acquired by each point by using a Kriging interpolation method to obtain the current soil moisture content W of the whole plane space of the whole field soil 。
1.2 Meteorological data acquisition and Pre-processing
The data are obtained from Chinese weather data network, and comprise weather data of the current day and weather data of forecast of future week, specifically average air temperature, highest day, lowest day, humidity, sunshine time, wind speed, precipitation occurrence time t1, precipitation ending time t2 and precipitation amount W pre Data.
2. Tobacco growth optimum soil moisture content range and soil moisture content requirement lower limit
All normal vital activities of tobacco plants can be smoothly carried out under the proper state of moisture, otherwise, the normal physiological activities and growth and development processes of tobacco are blocked or even stopped. The flue-cured tobacco is drought-resistant, and generally needs less water in the early growth stage, the most in the middle stage and less in the later stage.
The optimum soil moisture content and the lower limit of the soil moisture content requirement of different varieties of tobacco in different regions are different in different growth stages. The scheme has the maximum water-holding capacity W in the actual measurement field h On the basis of the prior literature data and the water requirement rule (soil relative humidity range [ lambda ] suitable for tobacco growth lower ,λ upper ]And minimum drought index/soil relative humidity requirementLambda determination min ) To determine the optimum soil moisture content range for local tobacco growth [ W upper ,W lower ]And a lower limit W of the soil moisture content requirement min . And soil relative humidity refers to the percentage of soil moisture to field capacity. Therefore, the soil moisture content calculation process is as follows:
W upper ＝W h *λ upper ；
W lower ＝W h *λ lower ；
W min ＝W h *λ min 。
3. crop actual evaporation quantity ET C Calculation of (2)
The grain and agriculture organization (FAO) of the United nations sets ET 0 Defined as "the amount of transpiration of a hypothetical crop with a plant height of 12cm at a ground resistance of 70s/m and an albedo of 0.23". While the actual evaporation quantity ET of crops C Refers to the amount of water evaporated by the crop actually planted under specific meteorological conditions and soil moisture conditions. At present, the ET is calculated on tobacco mainly by adopting a Penman-Montetith formula 0 (Penman-Monteth formula is FAO recommended calculation reference crop vapor emission ET 0 The accuracy of which has been widely verified worldwide) and then ET calculated in combination with crop coefficient methods C . The specific calculation mode is as follows:
a. first, calculate the reference crop evaporation quantity ET using the EToCalmulator tool provided by FAO 0 Wherein the required input parameters (average air temperature, highest day, lowest day, humidity, sunlight time, wind speed) are part of meteorological data in section 1.2;
b. then calculating the actual evaporation quantity ET of the crops according to a single crop coefficient method given in FAO C The formula:
ET C ＝K C *ET 0 ；
wherein K is C Representing crop coefficients (closely related to rainfall/irrigation frequency and soil texture), the calculation formula is:
wherein A is f Represents the average wet soil evaporation factor, K is taken as shown in Table 1 below according to the specific precipitation/irrigation interval and soil type cb The flue-cured tobacco base crop coefficients are shown in Table 2 using data recommended by the United nations grain and agriculture organization.
TABLE 1 average wet soil evaporation factor (A) f )
Table 2FAO 33 recommended flue-cured tobacco crop coefficients
4. Irrigation prescription map generation
The tobacco is relatively drought-resistant and waterlogging-resistant, so that the current water shortage condition is considered when the tobacco is irrigated, and whether the water is too much caused by the rainfall in a short period in the future after the water is irrigated is considered, and therefore, the scheme establishes a water irrigation prescription diagram generation mode as follows:
a. if the current soil water content W soil Is greater than or equal to the optimal soil moisture content range [ W ] lower ,W upper ]Lower limit W lower Indicating that the soil moisture in the tobacco field is proper or excessive at the moment, temporarily avoiding watering, otherwise, executing the step b;
b. if the current soil water content is greater than W min Executing the step c, otherwise, indicating that the moisture in the tobacco field is seriously lack and exceeds the maximum bearing degree, and immediately and fully filling water is needed, and outputting a filling prescription chart I (namely a first irrigation amount calculation result) according to the following calculation formula (namely a preset first calculation formula):
wherein W is 1 For a first irrigation quantity, W upper And W is lower Respectively the upper limit and the lower limit of the optimum soil water content range, W soil Is the current soil moisture content.
c. Combining the precipitation time t1 and the actual daily crop evaporation amount before the precipitation occurs, and judging whether the final water content of the soil (namely the final water content of the first soil) is larger than W before the precipitation is stopped min If yes, the water content of the existing soil in the field can be maintained until precipitation occurs, and e is executed, otherwise, d:
d. firstly, in order to ensure that the water content of the soil is not lower than W before the water is cut off min I.e. with basic water filling quantity W base The method is calculated according to the following formula:
then, combining the precipitation amount to judge whether the precipitation amount after precipitation can make the soil water content (namely the final water content of the second soil) be in the optimum interval [ W lower ,W upper ]If yes, outputting a irrigation prescription chart II (a second irrigation amount calculation result), wherein a calculation formula (namely a preset second calculation formula) is as follows:
wherein W is 2 For a second irrigation quantity, W base As the basic irrigation quantity, W min Is the lower limit of the water content requirement of the soil, t1 is the precipitation occurrence time, ET c The actual evaporation amount is the crop.
If not, outputting a irrigation prescription diagram III (namely a third irrigation quantity calculation result), wherein a calculation formula (namely a preset third calculation formula) is as follows:
in (W) 3 For the third irrigation quantity, W pre And t2 is the precipitation ending time.
e. Combining the precipitation amount with the daily water demand to judge whether the precipitation amount after precipitation can enable the water content of the soil (namely the final water content of the second soil) to be in an optimal interval [ W lower ,W upper ]If yes, temporarily not filling water, otherwise, calculating and outputting a filling water prescription diagram IV (namely a fourth irrigation amount calculation result) according to the following formula (namely a preset fourth calculation formula):
wherein W is 4 And the fourth irrigation amount.
And (5) summarizing the irrigation amounts of the four conditions together, and preparing a chart to generate an irrigation prescription chart of the tobacco field to be treated. According to the graph, the soil moisture content of the tobacco field can be managed, tobacco is ensured to grow in an optimal moisture environment, and the quality is improved.
The difference between the steps d and e is that: if the current soil water content is less than the lower limit of the soil water content requirement, water is supplemented in advance, and if the current soil water content is less than the lower limit, the water is not supplemented in advance. In order to ensure that the tobacco does not cause serious water shortage in the process before precipitation and influence the growth.
Example 2
As shown in fig. 4, a tobacco field irrigation prescription map generating apparatus includes:
basic data acquisition module 10: the method comprises the steps of collecting the current soil water content of the tobacco field to be treated and obtaining meteorological data of the tobacco field to be treated;
soil moisture content threshold calculation module 20: the method is used for measuring the field maximum water holding capacity of the tobacco field to be treated by adopting a cutting ring method, and calculating the optimum soil water content range and the lower limit of the soil water content requirement for tobacco growth by combining the water storage rule of tobacco varieties in the tobacco field to be treated;
the evapotranspiration calculation module 30: the method comprises the steps of substituting meteorological data into an EToCalmulator tool to calculate reference crop evaporation amount, so that the actual crop evaporation amount is calculated by using a single crop coefficient method;
irrigation prescription map generation module 40: and comparing and analyzing the current soil moisture content with the optimum soil moisture content range and the lower limit of the soil moisture content requirement, calculating the irrigation quantity by a preset irrigation calculation method according to the analysis result and combining the actual evaporation quantity of crops, and summarizing the calculation result of the irrigation quantity to generate an irrigation prescription diagram of the tobacco field to be treated.
In one embodiment of the device, in a basic data acquisition module 10, the current soil moisture content of a tobacco field to be treated is acquired, weather data of the tobacco field to be treated is acquired, in a soil moisture content threshold calculation module 20, the field maximum moisture capacity of the tobacco field to be treated is measured by adopting a ring-knife method, the optimum soil moisture content range and the lower limit of the soil moisture content requirement for tobacco growth are calculated by combining the water storage rule of tobacco varieties in the tobacco field to be treated, in an evapotranspiration amount calculation module 30, the weather data are substituted into an etocalculor tool to calculate the reference crop evapotranspiration amount, so that the actual evapotranspiration amount of crops is calculated by using a single crop coefficient method, in an irrigation prescription graph generation module 40, the current soil moisture content, the optimum soil moisture content range and the lower limit of the soil moisture content requirement are compared and analyzed, the irrigation amount is calculated by a preset irrigation calculation method according to the analysis result and combining the actual evapotranspiration amount of crops, and an irrigation prescription graph of the tobacco field to be treated is generated.
Example 3
On the basis of the above embodiments, the present embodiment provides an electronic device.
Example 4
On the basis of the above embodiments, the present embodiment provides a storage medium.
The above embodiments are merely illustrative embodiments of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications made by those skilled in the art within the scope of the present invention are included in the scope of the present invention.
Claims (10)
1. A method for generating a tobacco field irrigation prescription map, comprising:
collecting the current soil water content of the tobacco field to be treated and acquiring meteorological data of the tobacco field to be treated;
measuring the field maximum water holding capacity of the tobacco field to be treated by adopting a cutting ring method, and calculating the optimum soil water content range and the lower limit of the soil water content requirement for tobacco growth by combining the water storage rule of tobacco varieties in the tobacco field to be treated;
substituting the meteorological data into an EToCalmulator tool to calculate the reference crop evaporation amount so as to calculate the actual crop evaporation amount by using a single crop coefficient method;
and comparing and analyzing the current soil water content with the optimum soil water content range and the lower limit of the soil water content requirement, calculating the irrigation quantity by a preset irrigation calculation method according to the analysis result and combining the actual evaporation quantity of crops, and summarizing the calculation result of the irrigation quantity to generate an irrigation prescription diagram of the tobacco field to be treated.
2. The tobacco field irrigation prescription map generating method according to claim 1, wherein the preset irrigation calculation method specifically comprises the following steps:
a. judging whether the current soil water content is greater than or equal to the optimal soil water content range, if so, not filling water; if not, executing the step b;
b. judging whether the current soil water content is greater than the lower limit of the soil water content requirement, if so, executing the step c; if not, obtaining a first irrigation quantity calculation result according to a preset first calculation formula;
c. judging whether the final water content of the first soil before the cut-off precipitation is larger than the lower limit of the soil water content requirement according to the current soil water content, the actual crop evaporation amount and the meteorological data, if so, executing e, and if not, executing d;
d. judging whether the final water content of the second soil after precipitation is in the range of the water content of the most suitable soil according to the precipitation amount of the meteorological data, if so, obtaining a second irrigation amount calculation result according to a preset second calculation formula; if not, obtaining a third irrigation quantity calculation result according to a preset third calculation formula;
e. judging whether the final water content of the second soil after precipitation is in the range of the water content of the most suitable soil or not by combining the precipitation amount, and if so, not irrigating; if not, obtaining a fourth irrigation quantity calculating result according to a preset fourth calculation formula.
3. The method of claim 2, wherein the predetermined first calculation formula isWherein W is 1 For a first irrigation quantity, W upper And W is lower Respectively the upper limit and the lower limit of the optimum soil water content range, W soil Is the current soil moisture content.
4. The method of claim 3, wherein the second calculation formula is preset to beWherein W is 2 For a second irrigation quantity, W base As the basic irrigation quantity, W min Is the lower limit of the water content requirement of the soil, t1 is the precipitation occurrence time, ET c The actual evaporation amount for crops;
presetting a third calculation formula asWherein W is 3 For the third irrigation quantity, W pre And t2 is the precipitation ending time.
5. The method of claim 4, wherein the fourth calculation formula is preset to beWherein W is 4 And the fourth irrigation amount.
6. The method for generating a tobacco field irrigation prescription map according to claim 1, wherein the optimum soil moisture content range and the lower limit of the soil moisture content requirement for tobacco growth are calculated by combining the water storage rule of tobacco varieties in a tobacco field to be treated, specifically: and multiplying the soil relative humidity range and the drought index/soil relative humidity minimum requirement suitable for tobacco growth by the field maximum water holding capacity respectively to obtain the optimum soil water content range and the soil water content requirement lower limit.
7. The method for generating a tobacco field irrigation prescription map according to claim 1, wherein the formula for calculating the actual evaporation amount of crops by using a single crop coefficient method is ET C ＝K C *ET 0 Wherein ET is 0 ET for reference crop evaporation C K is the actual evaporation quantity of crops C Is the coefficient of the crop and is used for the control of the plant,A f represents the average wet soil evaporation factor, K cb Representing the coefficient of the flue-cured tobacco base crop.
8. A tobacco field irrigation prescription map generating device, characterized by comprising:
the basic data acquisition module: the method comprises the steps of collecting the current soil water content of the tobacco field to be treated and obtaining meteorological data of the tobacco field to be treated;
the soil water content threshold value calculating module: the method is used for measuring the field maximum water holding capacity of the tobacco field to be treated by adopting a cutting ring method, and calculating the optimum soil water content range and the lower limit of the soil water content requirement for tobacco growth by combining the water storage rule of tobacco varieties in the tobacco field to be treated;
the evapotranspiration amount calculation module: the method comprises the steps of substituting meteorological data into an EToCalmulator tool to calculate reference crop evaporation amount, so that the actual crop evaporation amount is calculated by using a single crop coefficient method;
irrigation prescription map generation module: and comparing and analyzing the current soil moisture content with the optimum soil moisture content range and the lower limit of the soil moisture content requirement, calculating the irrigation quantity by a preset irrigation calculation method according to the analysis result and combining the actual evaporation quantity of crops, and summarizing the calculation result of the irrigation quantity to generate an irrigation prescription diagram of the tobacco field to be treated.
9. An electronic device comprising a memory and a processor, the memory configured to store one or more computer instructions, wherein the one or more computer instructions are executable by the processor to implement a tobacco field irrigation prescription map generation method as claimed in any one of claims 1-7.
10. A computer-readable storage medium storing a computer program, wherein the computer program when executed by a computer implements a tobacco field irrigation prescription map generation method according to any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310335560.1A CN116485573A (en) | 2023-03-31 | 2023-03-31 | Tobacco field irrigation prescription chart generation method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310335560.1A CN116485573A (en) | 2023-03-31 | 2023-03-31 | Tobacco field irrigation prescription chart generation method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116485573A true CN116485573A (en) | 2023-07-25 |
Family
ID=87220442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310335560.1A Pending CN116485573A (en) | 2023-03-31 | 2023-03-31 | Tobacco field irrigation prescription chart generation method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116485573A (en) |
-
2023
- 2023-03-31 CN CN202310335560.1A patent/CN116485573A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108446997B (en) | A kind of Crop Water-saving Technology irrigation decision method and TT&C system based on Multi-source Information Fusion | |
| Karunaratne et al. | Calibration and validation of FAO-AquaCrop model for irrigated and water deficient bambara groundnut | |
| CN108781926B (en) | Greenhouse irrigation system and method based on neural network prediction | |
| Zhang et al. | Characteristics of the water–energy–carbon fluxes of irrigated pear (Pyrus bretschneideri Rehd) orchards in the North China Plain | |
| CN108958329B (en) | Drip irrigation water and fertilizer integrated intelligent decision-making method | |
| Jiang et al. | Evapotranspiration partitioning and variation of sap flow in female and male parents of maize for hybrid seed production in arid region | |
| Khoshravesh et al. | AquaCrop model simulation under different irrigation water and nitrogen strategies | |
| CN110909933A (en) | Agricultural drought rapid diagnosis and evaluation method coupling crop model and machine learning language | |
| Zhang et al. | Incorporating root distribution factor to evaluate soil water status for winter wheat | |
| Zhao et al. | Crop yield and water productivity responses in management zones for variable-rate irrigation based on available soil water holding capacity | |
| Shao et al. | Yield and water use response of winter wheat to winter irrigation in the North China Plain | |
| CN105494033A (en) | Intelligent water-saving irrigating method based on crop demand | |
| CN112042353A (en) | Water and fertilizer accurate decision method and system suitable for sunlight greenhouse | |
| CN113039908A (en) | Dynamic decision-making method and system for fertilization and irrigation | |
| CN110516943B (en) | Surface temperature-based dynamic monitoring and remote sensing method for irrigation area in spring irrigation period | |
| Zhu et al. | Remotely sensed canopy resistance model for analyzing the stomatal behavior of environmentally-stressed winter wheat | |
| CN113785759B (en) | Intelligent irrigation system and method for intercropping planting of crops and storable medium | |
| Jo et al. | Development of a transpiration model for precise tomato (Solanum lycopersicum L.) irrigation control under various environmental conditions in greenhouse | |
| CN110059980A (en) | A kind of controllable groundwater level depth crop water Sensitivity Index calculation method | |
| Bastos et al. | Evapotranspiration and crop coefficient of drip irrigated watermelon in Piaui coastline, Brazil | |
| CN112989560A (en) | Method for calculating water demand of crops based on soil moisture meteorological data | |
| CN110432046B (en) | Intelligent irrigation system in greenhouse | |
| Chavez et al. | Growth response and productivity of sorghum for bioenergy production in south Texas | |
| CN116485573A (en) | Tobacco field irrigation prescription chart generation method and device | |
| CN109118382B (en) | Method for establishing relation model of soil moisture content and fertilizing amount and application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |