CN105210801B - The determination method and device on irrigation opportunity and irrigation volume - Google Patents
The determination method and device on irrigation opportunity and irrigation volume Download PDFInfo
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- CN105210801B CN105210801B CN201510734704.6A CN201510734704A CN105210801B CN 105210801 B CN105210801 B CN 105210801B CN 201510734704 A CN201510734704 A CN 201510734704A CN 105210801 B CN105210801 B CN 105210801B
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Abstract
The embodiment of the invention provides the determination method and devices on a kind of irrigation opportunity and irrigation volume, wherein this method includes：According to the meteorological data in the meteorological data and the following preset time period in the past preset time period to irrigated area, the Crop Evapotranspiration to irrigated area is calculated；The continuous measurement practical water content of soil to irrigated area, calculates the water content consumption to irrigated area according to the variable quantity of the practical water content of the soil；In conjunction with the Crop Evapotranspiration to irrigated area and the water content consumption to irrigated area, pour water opportunity and the irrigation quantity to irrigated area is determined.The evapotranspiration method for being used for a wide range of decision is effectively combined by this method with the soil water point-score for being used for small range decision can be used for carrying out irrigation decision to large-scale open type farmland, meadow and forest together, and the accuracy of irrigation decision can be improved.
Description
Technical field
The present invention relates to irrigation technique field, in particular to the determination method and device on a kind of irrigation opportunity and irrigation volume.
Background technique
In the prior art, for irrigating, there are mainly two types of decision theory systems：The first be based on water balance equation and
The moisture loss method of evapotranspiration, the essence of this method are based on plant growth area history meteorological data interior for a period of time come operation
Crop Evapotranspiration (or being evapotranspiration rate), determines irrigation scheme according to the Crop Evapotranspiration, still, which is base
It obtains in meteorological data operation, does not have since there are uncertainties for meteorological data itself, and for obtained Crop Evapotranspiration
Verification method, so that the uncertainty of Crop Evapotranspiration will affect the accuracy of irrigation scheme；Second is based on actual measurement soil
The soil moisture content method of moisture, the essence of this method are the practical water content measured in soil by the way of experiment or apparatus measures, root
According to plant growth law of needing the water and the practical water content of soil measured, the water that this stage needs are irrigated is calculated, still, by
It being then based on experiment or apparatus measures mode obtains the practical water content of soil, experiment or apparatus measures are not suitable for multiple spot and carry out,
The practical water content of the soil measured is only capable of representing local soil, cannot represent the practical water content of a wide range of soil, therefore, if
Determine that the irrigation scheme in crop field can have accuracy problems with this method.
Summary of the invention
The embodiment of the invention provides a kind of irrigation opportunity and method for determination of amount is irrigated, to improve the filling in a wide range of farmland
Irrigate the accuracy of scheme.This method includes：According in the past preset time period to irrigated area meteorological data and future it is pre-
If the meteorological data in the period, the Crop Evapotranspiration to irrigated area is calculated；Continuous measurement is described to irrigated area
The practical water content of soil calculates the water content consumption to irrigated area according to the variable quantity of the practical water content of the soil；Knot
The Crop Evapotranspiration and the water content consumption to irrigated area to irrigated area is closed, determines the filling to irrigated area
Water opportunity and irrigation quantity.
In one embodiment, disappear in conjunction with the Crop Evapotranspiration to irrigated area and the water to irrigated area
Consumption determines pour water opportunity and the irrigation quantity to irrigated area, including：It is measured according to the Crop evapotranspiration to irrigated area
To the first relative water content curve to irrigated area soil, when the abscissa of the first relative water content curve is
Between, ordinate is the soil relative water content being converted to by Crop Evapotranspiration；According to the water content consumption to irrigated area
The second relative water content curve to irrigated area soil is obtained, when the abscissa of the second relative water content curve is
Between, ordinate is the soil relative water content being converted to by water content consumption；According to first phase to irrigated area soil
To water content curve and the second relative water content curve, pour water opportunity and the irrigation quantity to irrigated area is determined.
In one embodiment, contained relatively according to described to the first relative water content curve of irrigated area soil and second
Water curve determines pour water opportunity and the irrigation quantity to irrigated area, including：According to irrigated area soil
One relative water content curve and the second relative water content curve obtain the new relative water content curve to irrigated area,
Wherein, the new relative water content curve and the first relative water content curve and the second relative water content curve accord with
Close following relationship：Zq=K+aXm+bYn, wherein Z is the new relative water content curve, and X is first relative hydration
Curve is measured, Y is the second relative water content curve, and a, b, m, n, q and k are bent according to departure, X and the Y between X and Y
The numerical value that the change rate of numerical value and X and Y profile on line determines；It is bent according to the new relative water content to irrigated area
Line determines pour water opportunity and the irrigation quantity to irrigated area.
In one embodiment, contained relatively according to described to the first relative water content curve of irrigated area soil and second
Water curve obtains the new relative water content curve to irrigated area, including：With every on the first relative water content curve
The relative hydration numerical quantity at a time point, which subtracts, to be corresponded to the relative hydration numerical quantity at time point and obtains on the second relative water content curve
To difference；It will be right on the first relative water content curve when the absolute value for obtaining difference is greater than preset value for each time point
It answers the relative hydration numerical quantity at time point to be determined as the relative hydration numerical quantity at the time point, is less than in the absolute value for obtaining difference
When equal to preset value, the relative hydration numerical quantity and the second relative water content at time point will be corresponded on the first relative water content curve
The average value that the relative hydration numerical quantity at time point is corresponded on curve is determined as the relative hydration numerical quantity at the time point, obtains institute
State the new relative water content curve to irrigated area.
In one embodiment, the continuous measurement practical water content of soil to irrigated area, it is real according to the soil
The variable quantity of border water content calculates the water content consumption to irrigated area, including：To one piece of growth to irrigated area
There is the soil body of crop to take multiple measurements, measures the practical water content of soil of the soil body；According to repeatedly measuring the soil body
The variable quantity of the practical water content of soil determines the water content consumption to irrigated area.
The embodiment of the invention also provides the determining devices on a kind of irrigation opportunity and irrigation volume, to improve a wide range of farmland
The accuracy of irrigation scheme.The device includes：First computing module, for according to in the past preset time period of irrigated area
Meteorological data and the following preset time period in meteorological data, calculate the Crop Evapotranspiration to irrigated area；Second meter
Module is calculated, for continuously measuring the practical water content of soil to irrigated area, according to the change of the practical water content of the soil
Change amount calculates the water content consumption to irrigated area；Determining module, in conjunction with the Crop Evapotranspiration to irrigated area
With the water content consumption to irrigated area, pour water opportunity and the irrigation quantity to irrigated area is determined.
In one embodiment, the determining module, including：First curve determining unit, it is described wait irrigate for basis
The Crop Evapotranspiration in region obtains the first relative water content curve to irrigated area soil, first relative water content
The abscissa of curve is the time, and ordinate is the soil relative water content being converted to by Crop Evapotranspiration；Second curve determines
Unit, it is bent for obtaining second relative water content to irrigated area soil according to the water content consumption to irrigated area
Line, the abscissa of the second relative water content curve are the time, and ordinate is that the soil that is converted to by water content consumption is opposite
Water content；Irrigation scheme determination unit, it is described to the first relative water content curve of irrigated area soil and second for basis
Relative water content curve determines pour water opportunity and the irrigation quantity to irrigated area.
In one embodiment, the irrigation scheme determination unit, including：Curve determines subelement, for according to
To the first relative water content curve and the second relative water content curve of irrigated area soil, obtain described to the new of irrigated area
Relative water content curve, wherein the new relative water content curve and the first relative water content curve and described the
Two relative water content curves meet following relationship：Zq=K+aXm+bYn, wherein Z is the new relative water content curve, X
The first relative water content curve, Y is the second relative water content curve, a, b, m, n, q and k be according to X and Y it
Between departure, X and numerical value and X and Y profile on Y profile the numerical value that determines of change rate；Irrigation scheme determines subelement,
It described opportunity and pours water to pouring water for irrigated area for determining according to the new relative water content curve to irrigated area
Amount.
In one embodiment, the irrigation scheme determination unit further includes：Comparing subunit is used for first relatively
The relative hydration numerical quantity of each time point subtracts the phase that time point is corresponded on the second relative water content curve on water content curve
Difference is obtained to aqueous numerical quantity；The curve determines subelement, is also used to obtaining the absolute of difference for each time point
When value is greater than preset value, it is determined as the time point for the relative hydration numerical quantity at time point is corresponded on the first relative water content curve
Relative hydration numerical quantity, the absolute value for obtaining difference be less than or equal to preset value when, will be right on the first relative water content curve
Answer the flat of the relative hydration numerical quantity that time point is corresponded on the relative hydration numerical quantity at time point and the second relative water content curve
Mean value is determined as the relative hydration numerical quantity at the time point, obtains the new relative water content curve to irrigated area.
In one embodiment, second computing module, including：Measuring device, for described to irrigated area
One piece of growth has the soil body of crop to take multiple measurements, and measures the practical water content of soil of the soil body；Equipment is calculated, root is used for
According to the variable quantity of the practical water content of the soil for repeatedly measuring the soil body, the water content consumption to irrigated area is determined.
In embodiments of the present invention, by combining the Crop Evapotranspiration to irrigated area calculated according to meteorological data and survey
The water content consumption to irrigated area measured, to determine pour water opportunity and irrigation quantity to irrigated area, due to according to meteorology
The applicable range of the Crop Evapotranspiration that data calculate is big, although the water content consumption scope of application measured is small, data are quasi-
Really, therefore, by combining Crop Evapotranspiration and water content consumption, this method is determined for a wide range of farmland, meadow and forest
Deng irrigation scheme (for example, irrigate opportunity and irrigation volume etc.), and the accuracy of irrigation scheme can be improved.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, not
Constitute limitation of the invention.In the accompanying drawings：
Fig. 1 is a kind of irrigation opportunity provided in an embodiment of the present invention and the flow chart for irrigating method for determination of amount；
Fig. 2 is the structural block diagram of the determining device of a kind of irrigation opportunity provided in an embodiment of the present invention and irrigation volume.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, right below with reference to embodiment and attached drawing
The present invention is described in further details.Here, exemplary embodiment and its explanation of the invention is used to explain the present invention, but simultaneously
It is not as a limitation of the invention.
In embodiments of the present invention, a kind of determination method of irrigation scheme is provided, as shown in Figure 1, this method includes：
Step 101：According to the meteorological data in the past preset time period to irrigated area (i.e. in the past period
History meteorological data) and the following preset time period in meteorological data (the forecast meteorological data in i.e. following a period of time), meter
The Crop Evapotranspiration to irrigated area is calculated (for example, the Crop Evapotranspiration can be Crop Evapotranspiration, daily crop per hour
Evapotranspiration or monthly Crop Evapotranspiration)；
Step 102：The continuous measurement practical water content of soil to irrigated area, according to the practical water content of the soil
Variable quantity calculate the water content consumption to irrigated area (for example, the water content consumption can be water content consumption, daily per hour
Water content consumption or monthly water content consumption)；
Step 103：In conjunction with the Crop Evapotranspiration to irrigated area and the water content consumption to irrigated area, determine
Pour water opportunity and the irrigation quantity to irrigated area.
Process as shown in Figure 1 it is found that in embodiments of the present invention, by combine according to meteorological data calculate wait irrigate
The water content consumption to irrigated area that the Crop Evapotranspiration in region and measurement obtain, come determine to irrigated area pour water opportunity and
Irrigation quantity, since the applicable range of the Crop Evapotranspiration calculated according to meteorological data is big, although the water content consumption measured is suitable
It is small with range, but data are accurate, therefore, by combining Crop Evapotranspiration and water content consumption, this method is determined for greatly
The irrigation scheme (for example, irrigating opportunity and irrigation volume etc.) in range farmland, meadow and forest, and the standard of irrigation scheme can be improved
Exactness.
When it is implemented, above-mentioned can be large-scale farmland, meadow and forest etc. to irrigated area, it can be using the world
The Aridity index of food and agricultural organization's publication to calculate the Crop Evapotranspiration to irrigated area according to meteorological data, specifically, meteorological data
It can be the data such as maximum temperature, minimum temperature, relative humidity, intensity of sunshine, wind speed, wind direction, geographical location, height above sea level,
The calculating of the above-mentioned Crop Evapotranspiration to irrigated area can be calculated using cloud service, to improve computational efficiency.
When it is implemented, the water content consumption to irrigated area can be obtained by the following method, for example, described in continuous measurement
The practical water content of soil to irrigated area calculates described to irrigated area according to the variable quantity of the practical water content of the soil
Water content consumption, including：There is the soil body of crop to take multiple measurements one piece of growth to irrigated area, measures the soil body
The practical water content of soil；According to the variable quantity of the practical water content of the soil for repeatedly measuring the soil body, determine described wait irrigate
The water content consumption in region.Specifically, preset duration can be spaced within a certain period of time, using lysimeter or soil moisture sensor
It is taken multiple measurements Deng one piece of soil body to normal growth crop, the soil for obtaining the different moments soil body in certain time practical contains
Water, and then can be calculated by the variable quantity of the practical water content of soil of the different moments soil body in certain time wait irrigate
The water content consumption in region.For example, can continuously measure to the soil body by online monitoring instruments, and pass through wireless telecommunications side
Formula transmits the data measured, while can be by the way of cloud service come according to the variation meter of the practical water content of soil in the soil body
Calculate the water content consumption to irrigated area.
It obtains in the present embodiment, passing through after the Crop Evapotranspiration of irrigated area and after the water content consumption of irrigated area
Following methods determine pour water opportunity and irrigation quantity to irrigated area, for example, in conjunction with the Crop evapotranspiration to irrigated area
Amount and the water content consumption to irrigated area determine pour water opportunity and the irrigation quantity to irrigated area, including：According to institute
It states and obtains the first relative water content curve to irrigated area soil, first phase to the Crop Evapotranspiration of irrigated area
Abscissa to water content curve is the time, and ordinate is the soil relative water content being converted to by Crop Evapotranspiration；According to
The water content consumption to irrigated area obtains the second relative water content curve to irrigated area soil, second phase
Abscissa to water content curve is the time, and ordinate is the soil relative water content being converted to by water content consumption；According to institute
The the first relative water content curve and the second relative water content curve to irrigated area soil are stated, is determined described to irrigated area
It pours water opportunity and irrigation quantity.Specifically, saturated soil water content (field capacity) J evapotranspiration/field of actual measurement can be passed through
Crop Evapotranspiration is converted to soil relative water content by the mode of water-holding capacity, to obtain above-mentioned the first phase to irrigated area soil
To water content curve, saturated soil water content (field capacity) J daily consumption of water/field capacity side of actual measurement can be passed through
Water content consumption is converted to soil relative water content by formula, bent to obtain above-mentioned the second relative water content to irrigated area soil
Line.
When it is implemented, according to described to the first relative water content curve of irrigated area soil and the second relative water content
Curve determines pour water opportunity and the irrigation quantity to irrigated area, including：According to first phase to irrigated area soil
To water content curve and the second relative water content curve, the new relative water content curve to irrigated area is obtained, wherein
The new relative water content curve and the first relative water content curve and the second relative water content curve meet with
Lower relational expression：Zq=K+aXm+bYn, wherein Z is the new relative water content curve, and X is that first relative water content is bent
Line, Y are the second relative water content curves, and a, b, m, n, q and k are according on departure, X and the Y profile between X and Y
Numerical value and X and Y profile the numerical value that determines of change rate, for example, the departure between X and Y is bigger, influence of the X to Z should be deposited
In growth trend, i.e. the numerical value of a is larger, specifically, a, b, m, n, q and k can constantly be corrected according to the data of multi collect
To the value of gradually approaching to reality；According to the new relative water content curve to irrigated area, determine described to irrigation district
Pour water opportunity and the irrigation quantity in domain.
When it is implemented, according to described to the first relative water content curve of irrigated area soil and the second relative water content
Curve obtains the new relative water content curve to irrigated area, including：With it is each on the first relative water content curve when
Between the relative hydration numerical quantity put subtract and correspond to the relative hydration numerical quantity at time point on the second relative water content curve and obtain difference
Value；For each time point, when the absolute value for obtaining difference is greater than preset value, by the first relative water content curve to it is corresponding when
Between the relative hydration numerical quantity put be determined as the relative hydration numerical quantity at the time point, be less than or equal in the absolute value for obtaining difference
When preset value, the relative hydration numerical quantity and the second relative water content curve at time point will be corresponded on the first relative water content curve
The average value of the relative hydration numerical quantity at upper corresponding time point is determined as the relative hydration numerical quantity at the time point, obtain it is described to
The new relative water content curve of irrigated area；And then it can be determined according to the new relative water content curve described wait irrigate
Pour water opportunity and the irrigation quantity in region.For example, sometime point A is directed on relative water content curve, with the first relative water content
The relative hydration numerical quantity of corresponding points A subtracts the relative water content that time point A is corresponded on the second relative water content curve on curve
Numerical value will correspond to the relative hydration of time point A if the absolute value of difference is less than preset value on the first relative water content curve
Numerical quantity be determined as the time point relative hydration numerical quantity or difference absolute value be more than or equal to preset value when, by first
It is corresponded on relative water content curve and corresponds to time point A on the relative hydration numerical quantity and the second relative water content curve of time point A
The average value of relative hydration numerical quantity be determined as the relative hydration numerical quantity at the time point, therefore obtain above-mentioned to irrigated area
Revised new relative water content curve, determined when irrigated area when pouring water based on the new relative water content curve
The accuracy of irrigation scheme can be improved in machine and irrigation quantity.
Based on the same inventive concept, the determining dress on a kind of irrigation opportunity and irrigation volume is additionally provided in the embodiment of the present invention
It sets, as described in the following examples.The principle and irrigate opportunity that determining device due to irrigating opportunity and irrigation volume solves the problems, such as
It is similar with method for determination of amount is irrigated, thus the implementation for irrigating the determining device of opportunity and irrigation volume may refer to irrigation opportunity and
The implementation of method for determination of amount is irrigated, overlaps will not be repeated.Used below, term " unit " or " module " can be with
Realize the combination of the software and/or hardware of predetermined function.Although device described in following embodiment is preferably come with software real
It is existing, but the realization of the combination of hardware or software and hardware is also that may and be contemplated.
Fig. 2 is a kind of structural block diagram on the irrigation opportunity of the embodiment of the present invention and the determining device of irrigation volume, such as Fig. 2 institute
Show, including：First computing module 201, the second computing module 202 and determining module 203, are below illustrated the structure.
First computing module 201, for according to in the past preset time period of irrigated area meteorological data and future
Meteorological data in preset time period calculates the Crop Evapotranspiration to irrigated area；
Second computing module 202 is connect with the first computing module 201, for continuously measuring the soil to irrigated area
The practical water content of earth calculates the water content consumption to irrigated area according to the variable quantity of the practical water content of the soil；
Determining module 203 is connect with the second computing module 202, in conjunction with the Crop Evapotranspiration to irrigated area
With the water content consumption to irrigated area, pour water opportunity and the irrigation quantity to irrigated area is determined.
In one embodiment, the determining module 203, including：First curve determining unit, it is described wait fill for basis
The Crop Evapotranspiration for irrigating region obtains the first relative water content curve to irrigated area soil, first relative hydration
The abscissa for measuring curve is the time, and ordinate is the soil relative water content being converted to by Crop Evapotranspiration；Second curve is true
Order member, for obtaining second relative water content to irrigated area soil according to the water content consumption to irrigated area
Curve, the abscissa of the second relative water content curve are the time, and ordinate is the soil phase being converted to by water content consumption
To water content；Irrigation scheme determination unit is connect with the first curve determining unit and the second curve determining unit, for according to institute
The the first relative water content curve and the second relative water content curve to irrigated area soil are stated, is determined described to irrigated area
It pours water opportunity and irrigation quantity.
In one embodiment, the irrigation scheme determination unit, including：Curve determines subelement, for according to
To the first relative water content curve and the second relative water content curve of irrigated area soil, obtain described to the new of irrigated area
Relative water content curve, wherein the new relative water content curve and the first relative water content curve and described the
Two relative water content curves meet following relationship：Zq=K+aXm+bYn, wherein Z is the new relative water content curve, X
The first relative water content curve, Y is the second relative water content curve, a, b, m, n, q and k be according to X and Y it
Between departure, X and numerical value and X and Y profile on Y profile the numerical value that determines of change rate；Irrigation scheme determines subelement,
Determine that subelement is connect with curve, for determining described wait fill according to the new relative water content curve to irrigated area
Irrigate pour water opportunity and the irrigation quantity in region.
In one embodiment, the irrigation scheme determination unit further includes：Comparing subunit is used for first relatively
The relative hydration numerical quantity of each time point subtracts the phase that time point is corresponded on the second relative water content curve on water content curve
Difference is obtained to aqueous numerical quantity；Irrigation scheme determines subelement, is also used to obtaining the absolute of difference for each time point
When value is greater than preset value, it is determined as the time point for the relative hydration numerical quantity at time point is corresponded on the first relative water content curve
Relative hydration numerical quantity, the absolute value for obtaining difference be less than or equal to preset value when, will be right on the first relative water content curve
Answer the flat of the relative hydration numerical quantity that time point is corresponded on the relative hydration numerical quantity at time point and the second relative water content curve
Mean value is determined as the relative hydration numerical quantity at the time point, obtains the new relative water content curve to irrigated area.
In one embodiment, second computing module 202, including：Measuring device is used for described to irrigated area
One piece of growth there is the soil body of crop to take multiple measurements, measure the practical water content of soil of the soil body；Equipment is calculated, is used for
According to the variable quantity of the practical water content of the soil for repeatedly measuring the soil body, the water content consumption to irrigated area is determined.
In one embodiment, the measuring device can be lysimeter, soil moisture sensor or evaporating dish etc..
In embodiments of the present invention, by combining the Crop Evapotranspiration to irrigated area calculated according to meteorological data and survey
The water content consumption to irrigated area measured, to determine pour water opportunity and irrigation quantity to irrigated area, due to according to meteorology
The applicable range of the Crop Evapotranspiration that data calculate is big, although the water content consumption scope of application measured is small, data are quasi-
Really, therefore, by combining Crop Evapotranspiration and water content consumption, this method is determined for a wide range of, meadow and forest etc.
Irrigation scheme (for example, irrigating opportunity and irrigation volume etc.), and the accuracy of irrigation scheme can be improved.
Obviously, those skilled in the art should be understood that each module of the above-mentioned embodiment of the present invention or each step can be with
It is realized with general computing device, they can be concentrated on a single computing device, or be distributed in multiple computing devices
On composed network, optionally, they can be realized with the program code that computing device can perform, it is thus possible to by it
Store and be performed by computing device in the storage device, and in some cases, can be held with the sequence for being different from herein
The shown or described step of row, perhaps they are fabricated to each integrated circuit modules or will be multiple in them
Module or step are fabricated to single integrated circuit module to realize.In this way, the embodiment of the present invention be not limited to it is any specific hard
Part and software combine.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the embodiment of the present invention can have various modifications and variations.All within the spirits and principles of the present invention, made
Any modification, equivalent substitution, improvement and etc. should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of irrigation opportunity and irrigation method for determination of amount, which is characterized in that including：
According to the meteorological data in the meteorological data and the following preset time period in the past preset time period to irrigated area, meter
Calculate the Crop Evapotranspiration to irrigated area；
The continuous measurement practical water content of soil to irrigated area, calculates according to the variable quantity of the practical water content of the soil
The water content consumption to irrigated area；
In conjunction with the Crop Evapotranspiration to irrigated area and the water content consumption to irrigated area, determine described to irrigation district
Pour water opportunity and the irrigation quantity in domain；
In conjunction with the Crop Evapotranspiration to irrigated area and the water content consumption to irrigated area, determine described to irrigation district
Pour water opportunity and the irrigation quantity in domain, including：
The first relative water content curve to irrigated area soil is obtained according to the Crop Evapotranspiration to irrigated area,
The abscissa of the first relative water content curve is the time, and ordinate is that the soil being converted to by Crop Evapotranspiration contains relatively
Water；
The second relative water content curve to irrigated area soil, institute are obtained according to the water content consumption to irrigated area
The abscissa for stating the second relative water content curve is the time, and ordinate is the soil relative hydration being converted to by water content consumption
Amount；
According to the first relative water content curve and the second relative water content curve to irrigated area soil, determine it is described to
Pour water opportunity and the irrigation quantity of irrigated area；
According to the first relative water content curve and the second relative water content curve to irrigated area soil, determine it is described to
Pour water opportunity and the irrigation quantity of irrigated area, including：
According to the first relative water content curve and the second relative water content curve to irrigated area soil, obtain it is described to
The new relative water content curve of irrigated area, wherein the new relative water content curve and first relative water content
Curve and the second relative water content curve meet following relationship：
Zq=K+aXm+bYn,
Wherein, Z is the new relative water content curve, and X is the first relative water content curve, and Y is described second opposite
Water content curve, a, b, m, n, q and K are according to the numerical value and X and Y profile on departure, X and the Y profile between X and Y
Change rate determine numerical value；
According to the new relative water content curve to irrigated area, determines and described opportunity and pour water to pouring water for irrigated area
Amount.
2. the method as described in claim 1, which is characterized in that according to first relative water content to irrigated area soil
Curve and the second relative water content curve obtain the new relative water content curve to irrigated area, including：
It is subtracted on the second relative water content curve with the relative hydration numerical quantity of each time point on the first relative water content curve
The relative hydration numerical quantity at corresponding time point obtains difference；
It, will be corresponding on the first relative water content curve when the absolute value for obtaining difference is greater than preset value for each time point
The relative hydration numerical quantity at time point is determined as the relative hydration numerical quantity at the time point, be less than in the absolute value for obtaining difference etc.
It is when preset value, relative hydration numerical quantity and the second relative water content that time point is corresponded on the first relative water content curve is bent
The average value that the relative hydration numerical quantity at time point is corresponded on line is determined as the relative hydration numerical quantity at the time point, obtains described
New relative water content curve to irrigated area.
3. the method as described in any one of claims 1 to 2, which is characterized in that the continuous measurement soil to irrigated area
The practical water content of earth calculates the water content consumption to irrigated area according to the variable quantity of the practical water content of the soil, including：
There is the soil body of crop to take multiple measurements one piece of growth to irrigated area, the soil for measuring the soil body is practical
Water content；
According to the variable quantity of the practical water content of the soil for repeatedly measuring the soil body, determine that the water to irrigated area disappears
Consumption.
4. a kind of determining device on irrigation opportunity and irrigation volume, which is characterized in that including：
First computing module, for according to the meteorological data and the following preset time in the past preset time period of irrigated area
Meteorological data in section calculates the Crop Evapotranspiration to irrigated area；
Second computing module, it is practical according to the soil for continuously measuring the practical water content of soil to irrigated area
The variable quantity of water content calculates the water content consumption to irrigated area；
Determining module, in conjunction with the Crop Evapotranspiration to irrigated area and the water content consumption to irrigated area, really
Fixed pour water opportunity and the irrigation quantity to irrigated area；
The determining module, including：
First curve determining unit, it is described to irrigated area soil for being obtained according to the Crop Evapotranspiration to irrigated area
The first relative water content curve, the abscissa of the first relative water content curve is the time, and ordinate is by Crop evapotranspiration
Measure the soil relative water content being converted to；
Second curve determining unit, it is described to irrigated area soil for being obtained according to the water content consumption to irrigated area
Second relative water content curve, the abscissa of the second relative water content curve are the time, and ordinate is turned by water content consumption
The soil relative water content got in return；
Irrigation scheme determination unit, for according to described opposite to the first relative water content curve of irrigated area soil and second
Water content curve determines pour water opportunity and the irrigation quantity to irrigated area；
The irrigation scheme determination unit, including：
Curve determines subelement, for being contained relatively according to described to the first relative water content curve of irrigated area soil and second
Water curve obtains the new relative water content curve to irrigated area, wherein the new relative water content curve with
The first relative water content curve and the second relative water content curve meet following relationship：
Zq=K+aXm+bYn,
Wherein, Z is the new relative water content curve, and X is the first relative water content curve, and Y is described second opposite
Water content curve, a, b, m, n, q and K are according to the numerical value and X and Y profile on departure, X and the Y profile between X and Y
Change rate determine numerical value；
Irrigation scheme determines subelement, for according to the new relative water content curve to irrigated area, determine it is described to
Pour water opportunity and the irrigation quantity of irrigated area.
5. device as claimed in claim 4, which is characterized in that the irrigation scheme determination unit further includes：
Comparing subunit, for subtracting the second phase with the relative hydration numerical quantity of each time point on the first relative water content curve
Difference is obtained to the relative hydration numerical quantity for corresponding to time point on water content curve；
Curve determines subelement, is also used to for each time point, when the absolute value for obtaining difference is greater than preset value, by first
The relative hydration numerical quantity that time point is corresponded on relative water content curve is determined as the relative hydration numerical quantity at the time point,
To difference absolute value be less than or equal to preset value when, the relative water content number at time point will be corresponded on the first relative water content curve
The average value for the relative hydration numerical quantity for corresponding to time point in value and the second relative water content curve is determined as the phase at the time point
To aqueous numerical quantity, the new relative water content curve to irrigated area is obtained.
6. the device as described in any one of claim 4 to 5, which is characterized in that second computing module, including：
Measuring device measures described for having the soil body of crop to take multiple measurements one piece of growth to irrigated area
The practical water content of the soil of the soil body；
Equipment is calculated, for the variable quantity according to the practical water content of soil for repeatedly measuring the soil body, is determined described wait irrigate
The water content consumption in region.
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| CN105868864A (en) * | 2016-04-13 | 2016-08-17 | 宁夏回族自治区唐徕渠管理处 | Control method and control system for automatic irrigation of interplanted crops |
| CN106702981B (en) * | 2016-12-22 | 2018-10-23 | 中国水利水电科学研究院 | A kind of the parameter generation method and device of irrigated area drainage system |
| CN106779479B (en) * | 2017-01-12 | 2019-02-12 | 中国水利水电科学研究院 | A kind of paddy field irrigates the acquisition methods and device of demand information |
| CN107330805B (en) * | 2017-07-07 | 2020-05-05 | 中国灌溉排水发展中心 | Method for determining irrigation frequency and intensity |
| CN107274040B (en) * | 2017-08-10 | 2018-09-11 | 中国水利水电科学研究院 | Crop level water requirement estimation method based on soil moisture content transformation |
| CN108077042A (en) * | 2017-12-04 | 2018-05-29 | 北京农业智能装备技术研究中心 | A kind of winter wheat time of infertility irrigates early warning decision method |
| CN108401854B (en) * | 2018-01-30 | 2020-05-15 | 华南农业大学 | Water-saving navel orange irrigation method based on soil moisture detection |
| CN108617355B (en) * | 2018-03-29 | 2021-01-26 | 北京农业智能装备技术研究中心 | Irrigation decision method and system for cluster greenhouse |
| US20200178484A1 (en) * | 2018-12-11 | 2020-06-11 | Hgci, Inc. | Irrigation control system that detects cloud cover from an array of photovoltaic cells and methods for same |
| US11313811B2 (en) | 2019-12-27 | 2022-04-26 | International Business Machines Corporation | Dynamic determination of irrigation-related data using machine learning techniques |
| CN111401649A (en) * | 2020-03-23 | 2020-07-10 | 成都信息工程大学 | Method and system for predicting irrigation flow according to climate change |
| CN112493084B (en) * | 2020-11-27 | 2023-04-21 | 重庆文理学院 | Water balance tea tree watering method based on weather forecast information |
| CN112493100B (en) * | 2020-12-03 | 2022-04-22 | 塔里木大学 | Cotton moisture monitoring drip irrigation control method and system based on soil water potential |
| CN113016450A (en) * | 2021-03-22 | 2021-06-25 | 北京农业智能装备技术研究中心 | Greenhouse crop irrigation method and system |
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| US20140236868A1 (en) * | 2013-02-15 | 2014-08-21 | Banyan Water, Inc. | System and method for automated, range-based irrigation |
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