CN110059980A - A kind of controllable groundwater level depth crop water Sensitivity Index calculation method - Google Patents
A kind of controllable groundwater level depth crop water Sensitivity Index calculation method Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 124
- 230000035945 sensitivity Effects 0.000 title claims abstract description 38
- 239000003673 groundwater Substances 0.000 title claims abstract description 21
- 238000004364 calculation method Methods 0.000 title claims abstract description 18
- 238000001704 evaporation Methods 0.000 claims abstract description 43
- 230000008020 evaporation Effects 0.000 claims abstract description 43
- 238000009395 breeding Methods 0.000 claims abstract description 40
- 230000001488 breeding effect Effects 0.000 claims abstract description 40
- 238000009825 accumulation Methods 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 230000035558 fertility Effects 0.000 claims description 3
- 241001269238 Data Species 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 5
- 238000011002 quantification Methods 0.000 abstract description 3
- 235000010469 Glycine max Nutrition 0.000 description 17
- 244000068988 Glycine max Species 0.000 description 17
- 238000003973 irrigation Methods 0.000 description 5
- 230000002262 irrigation Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000012010 growth Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000009189 diving Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000036512 infertility Effects 0.000 description 1
- 208000000509 infertility Diseases 0.000 description 1
- 231100000535 infertility Toxicity 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- 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
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Abstract
The invention discloses a kind of controllable groundwater level depth crop water Sensitivity Index calculation methods, comprising the following steps: (1) obtains different groundwater level depth at least 4 years crops yield and the measured data data of evaporation from phreatic water amount day by day year by year；(2) breeding time of crop is divided, and guarantees that the breeding time number that crop marks off is consistent with the time number that selection is used to calculate from measured data data；(3) maximum value of crop yield and the maximum value of each breeding time evaporation from phreatic water accumulation amount are found out from measured data data；(4) Sensitivity index to water that computation model calculates different groundwater level depth crop each breeding times is imported according to the related data obtained in step (2) and step (3)；The present invention influences the supply of crop root soil moisture according to the phreatic water buried depth of different layers position, and the content supplemented with crop Yu water relationship field connects evaporation from phreatic water data with Sensitivity index to water, and quantification reacts crop to water utilization degree.
Description
Technical field
The present invention relates to groundwater resources to utilize field, relates in particular to a kind of controllable groundwater level depth crop water
Sensitivity Index calculation method.
Background technique
Moisture is to influence important one of the factor of crop yield, and identification crop yield and water utilization relationship are agricultural water conservations
Important link.In Water in Shallow Groundwater Areas, phreatic water is the main one of with water water source of agricultural irrigation, phreatic water and
Soil water connection is close, and frequently, phreatic water is larger to the alimentation of crop water, phreatic water and the soil water for conversion
Reasonable Regulation And Control, growth and field water resource to crops efficiently using most important.
The utilization relationship of crop and water is mainly expressed by water production functions relationship.Crop water Sensitivity Index is to calculate
One very important parameter of model, to the influence degree of yield, crop water is utilized to be referred to reaction crop water shortage with moisture-sensitive
Number it is closely related, Sensitivity index to water can quantification reaction crop to water utilization.Underground water buried depth influences underground water to crop
The supply of root soil moisture directly affects water utilization and the crop yield of crop, and in Northern Area of Huaihe River, phreatic water is weight
The pesticide irrigation-ing water wanted, influence of the phreatic water buried depth of different layers position to plant growth, moisture supply are crop, the spy of water relationship
A tera incognita in rope, thus seek crop water Sensitivity Index calculation method under different underground water buried depths be there is an urgent need to
The key scientific problems solved, and a further important channel of understanding crop-water relationship.
Summary of the invention
In order to solve shortcoming in the prior art, it is quick that the present invention provides a kind of controllable groundwater level depth crop water
Feel index calculation method, solves the technical problem that can not seek the moisture supply situation of different levels of ground water in the prior art, make
The Sensitivity index to water of different level of ground water crops can be calculated with the present invention.In order to solve the above-mentioned technical problem, the present invention adopts
With following technical solution: the following steps are included:
(1) crops of different groundwater level depths yield and evaporation from phreatic water amount at least 4 years actual measurement numbers day by day year by year are obtained
According to data；
(2) breeding time of crop is divided, and guarantees breeding time number that crop marks off and from measured data data
Time number of the selection for calculating is consistent；
(3) maximum value of crop yield and the maximum of each breeding time evaporation from phreatic water accumulation amount are found out from measured data data
Value；
(4) computation model is imported according to the related data obtained in step (2) and step (3), calculates different levels of ground water
The Sensitivity index to water of buried depth crop each breeding time.
In order to further calculate out Sensitivity index to water, the moisture of crop is calculated in the step (4) using computation model
The process of Sensitivity Index is as follows:
The calculation formula of computation model isI is fertility divided stages serial number in formula；λiNot for crop
With stage water shortage to the Sensitivity Index of yield；Y is actual production；YmFor ideally yield；ET is practical evaporation from phreatic water amount；
ETmFor ideally evaporation from phreatic water amount；N is growing stage sum；
Logarithm is taken to obtain formula on the both sides of the calculation formula of computation modelIt enables Then obtain linear formula
It is handled using m, substitutes into linear formulaObtain J group Xij, Zj(j=1,2 ..., m；I=1,
2 ..., n), using least square method, establish objective functionIt enablesThen obtain equationThe equation is solved, first group of linear simultaneous equation is obtained:
In formulaIt solves
Equation group obtains λi。
As a further improvement of the present invention, it in the step (3), is calculated and is required according to computation model, to avoid Y/Ym
It is equal to lead to the Sensitivity index to water calculated inaccuracy, when finding out the maximum value of crop yield from measured data data, if most
Big value then chooses the yield maximum value in measured data data as calculated value Y not within the time for calculatingmIf maximum
Value appeared in the time for calculating, rounded up (ratio for guaranteeing yield and evaporation from phreatic water amount is not 1) with the maximum value
Value afterwards is calculated value Ym。
As a further improvement of the present invention, it in the step (4), is calculated and is required according to computation model, to avoid ET/
ETmIt is equal to lead to the Sensitivity index to water calculated inaccuracy, the diving of each breeding time of crop is found out from measured data data
When the maximum value of evaporation capacity accumulation amount, if maximum value not within the time for calculating, chooses the phase in measured data data
The maximum value for answering the evaporation from phreatic water accumulation amount of breeding time (i) is calculated value (Etm)iIf maximum value appears in the time for calculating
Interior, the value after (ratio for guaranteeing yield and evaporation from phreatic water amount is not 1) that rounded up using the maximum value is calculated value (Etm)i。
The beneficial effects of the present invention are embodied in:
1. the present invention influences the supply of crop root soil moisture according to the phreatic water buried depth of different layers position, supplement
The content of crop and water relationship field；
2. the present invention evaporation from phreatic water data are connected with Sensitivity index to water, can quantification react crop to moisture
Producing level；
3. using the present invention index and suggestion of Optimized Irrigation System can be provided to Water in Shallow Groundwater Areas crop, crop is ensured
Moisture supply is grown to improve yield.
Detailed description of the invention
Fig. 1 is the flow diagram of the invention patent.
Fig. 2 is different each breeding time Sensitivity index to water accumulated value figures of underground water buried depth crop.
Specific embodiment
To keep the invention patent technical problems to be solved, technical solution and advantage clearer, below in conjunction with specific
Case study on implementation is described in detail.
A kind of controllable groundwater level depth crop water Sensitivity Index calculation method, comprising the following steps:
(1) crops of different groundwater level depths yield and evaporation from phreatic water amount at least 4 years actual measurement numbers day by day year by year are obtained
According to data；
(2) breeding time of crop is divided, and guarantees breeding time number that crop marks off and from measured data data
Time number of the selection for calculating is consistent；
(3) maximum value of crop yield and the maximum of each breeding time evaporation from phreatic water accumulation amount are found out from measured data data
Value；
(4) computation model is imported according to the related data obtained in step (2) and step (3), calculates different levels of ground water
The Sensitivity index to water of buried depth crop each breeding time；
Wherein, to avoid Y/YmIt is equal to lead to the Sensitivity index to water calculated inaccuracy, it is found out from measured data data
When the maximum value of crop yield, if maximum value not within the time for calculating, chooses the yield in measured data data most
Big value is used as calculated value YmIf maximum value appeared in the time for calculating, rounded up with the maximum value (guarantee yield and
The ratio of evaporation from phreatic water amount be not 1) after value be calculated value Ym；To avoid ET/ETmThe equal Sensitivity index to water for causing to calculate
Inaccuracy, when finding out the maximum value of evaporation from phreatic water amount accumulation amount of each breeding time of crop from measured data data, if maximum
Value then chooses the evaporation from phreatic water accumulation amount of the corresponding breeding time (i) in measured data data not within the time for calculating
Maximum value is calculated value (Etm)iIf maximum value appeared in the time for calculating, is rounded up with the maximum value and (guarantee to produce
Amount and evaporation from phreatic water amount ratio be not 1) after value be calculated value (Etm)i。
In step (4), the process for calculating the Sensitivity index to water of crop using computation model is as follows:
The calculation formula of computation model isI is fertility divided stages serial number in formula；λiNot for crop
With stage water shortage to the Sensitivity Index of yield；Y is actual production；YmFor maximum production；ET is practical evaporation from phreatic water amount；ETmFor most
Big evaporation from phreatic water amount；N is growing stage sum；
Logarithm is taken to obtain formula on the both sides of the calculation formula of computation modelIt enables Then obtain linear formula
It is handled using m, substitutes into linear formulaObtain J group Xij, Zj(j=1,2 ..., m；I=1,2 ...,
N), using least square method, objective function is establishedIt enablesThen obtain equationThe equation is solved, first group of linear simultaneous equation is obtained:
In formulaIt solves
Equation group obtains λi。
It is exemplified below, selects certain hydrological experimental station for enforcement place, which belongs to north subtropical and temperate zone is semi-moist
Monsoon climatic region, winter drying is short of rain, and summer is burning hot and rainy, makes a clear distinction between the four seasons, and has a moderate climate.Since the area is in north and south line of demarcation
On, belong to changes in temperature air mass and cross swords zone of transition, precipitation Annual variations are big, and Tendency analysis is uneven, Multi-year average precipitation
892.2mm, evaporation capacity 851.1mm, 14.7 DEG C of many years temperature on average, average sunshine time 2200h, frost-free period 250d.Referring to figure
1, patent that the present invention will be described in detail below with reference to the accompanying drawings.
One, data select
Crop choice soybean, plantation time select 2003~2009 years, choose 0.2,0.4,0.8,1.0,1.5m underground water
The soybean yields of buried depth and day by day evaporation from phreatic water amount, establish data system.
When acquisition data, the data system time is The more the better, and the data system time of composition is more, is guaranteeing that data have
Representative, systematicness, it is scientific on the basis of select yield and each breeding time evaporation from phreatic water accumulation amount maximum value reliability and
Accuracy is higher.
Two, data calculate
2.1, according to breeding time feature, divide four breeding times of soybean, as shown in table 1；
1 2003~2009 years soybean growth period statistics of table
2.2 calculate in each annual different growing evaporation from phreatic water data accumulation value day by day and enumerate soybean yields, such as table 2-6
It is shown；
2003~2009 years soybean each breeding times evaporation from phreatic water accumulation amount and yield day by day when 2 0.2m underground water buried depth of table
2003~2009 years soybean each breeding times evaporation from phreatic water accumulation amount and yield day by day when 3 0.4m underground water buried depth of table
2003~2009 years soybean each breeding times evaporation from phreatic water accumulation amount and yield day by day when 4 0.8m underground water buried depth of table
2003~2009 years soybean each breeding times evaporation from phreatic water accumulation amount and yield day by day when 5 1.0m underground water buried depth of table
2003~2009 years soybean each breeding times evaporation from phreatic water accumulation amount and yield day by day when 6 1.5m underground water buried depth of table
2.3 for guarantee calculate time number it is consistent with breeding time number, it is assumed that select 2006-2009 for calculating the time into
Row analysis；
2.4 by taking 0.2m underground water buried depth as an example, finds out soybean yields and each breeding time evaporation from phreatic water data accumulation amount most
Big value.Crop yield maximum value appears in 2005 in data system, therefore number 213.8 is selected to be used as calculated value.Sowing-branch
Phase evaporation from phreatic water accumulation amount maximum value appears in 2004, is not calculating in time section, and taking 82.9mm is maximum value；Branch-
Flower pod phase evaporation from phreatic water accumulation amount maximum value appears in 2008, is calculating in time section, maximum value 68.2mm is taken upwards
Value 69mm after whole (ratio for guaranteeing yield and evaporation from phreatic water amount is not 1) is as calculated value；Flower pod-podding duration evaporation from phreatic water is tired
Dosage maximum value appears in 2004, is not calculating in time section, and taking 193.4mm is maximum value；Drum grain-harvest time diving steams
Hair accumulation amount maximum value appears in 2004, is not calculating in time section, and taking 109.1mm is maximum value, as shown in table 7.
7 soybean yields of table and each breeding time evaporation from phreatic water accumulation amount maximum value
Three, Sensitivity index to water is calculated
The method that patent proposes according to the present invention, it is each to calculate soybean under 0.2,0.4,0.8,1.0,1.5m underground water buried depth
The Sensitivity index to water of breeding time, the process such as the invention patent content for calculating the Sensitivity index to water of crop are recorded, and are succinct
For the sake of description, details are not described herein, and final calculation result is as shown in table 8；
Each breeding time Sensitivity index to water of crop under 8 different buried depth of table
From the point of view of each breeding time angle of soybean, different underground water buried depths change the Sensitivity Index of soybean each breeding time
Rule is closely similar；In flower pod~podding duration, Sensitivity index to water is much larger than other breeding times, and water deficit will directly affect
Crop yield guarantees soybean an important factor for the abundant irrigation of flower pod~podding duration is to improve yield.
By the Sensitivity index to water summation of crop each breeding time under each buried depth, it can determine that the irrigation volume under different buried depth is wanted
It asks；It is specific relatively more as shown in Figure 2.
From the point of view of underground water buried depth angle, with the increase of underground water buried depth, underground water buried depth is controlled in 1.0m or so,
Man-made irrigation can be reduced compared to other buried depths, the number of water-logging drainage also can guarantee soybean in time of infertility crop normal growth
Water requirement, while reaching water-saving benefit.
It should be understood that example as described herein and embodiment are not intended to restrict the invention, this field only for explanation
Technical staff can make various modifications or variation according to it, all within the spirits and principles of the present invention, made any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of controllable groundwater level depth crop water Sensitivity Index calculation method, which comprises the following steps:
(1) crops of different groundwater level depths yield and at least 4 years measured datas of evaporation from phreatic water amount money day by day year by year are obtained
Material；
(2) breeding time of crop is divided, and guarantees breeding time number and select from measured data data that crop marks off
Time number for calculating is consistent；
(3) maximum value of crop yield and the maximum value of each breeding time evaporation from phreatic water accumulation amount are found out from measured data data
(theoretical value approximation is interpreted as the maximum value of each amount in formula)；
(4) computation model is imported according to the related data obtained in step (2) and step (3), calculates different groundwater level depths
The Sensitivity index to water of crop each breeding time.
2. controllable groundwater level depth crop water Sensitivity Index calculation method according to claim 1, which is characterized in that
The process for calculating the Sensitivity index to water of crop in the step (4) using computation model is as follows:
The calculation formula of computation model isI is fertility divided stages serial number in formula；λiFor crop not same order
Sensitivity Index of the section water shortage to yield；Y is actual production；YmFor ideally yield；ET is practical evaporation from phreatic water amount；ETmFor
Ideally evaporation from phreatic water amount；N is growing stage sum；
Logarithm is taken to obtain formula on the both sides of the calculation formula of computation modelIt enables Then obtain linear formula
It is handled using m, substitutes into linear formulaObtain J group Xij, Zj(j=1,2 ..., m；I=1,2 ..., n),
Using least square method, objective function is establishedIt enablesThen obtain equationThe equation is solved, first group of linear simultaneous equation is obtained:
In formulaSolve equation
Group obtains λi。
3. controllable groundwater level depth crop water Sensitivity Index calculation method according to claim 2, which is characterized in that
In the step (3), when finding out the maximum value of crop yield from measured data data, if maximum value is not or not the year for calculating
In part, then the yield maximum value in measured data data is chosen as calculated value YmIf maximum value appears in the year for calculating
In part, the value (ratio that guarantees yield and evaporation from phreatic water amount be not 1) after is rounded up using the maximum value as calculated value Ym。
4. controllable groundwater level depth crop water Sensitivity Index calculation method according to claim 2 or 3, feature exist
In: in the step (4), the maximum value of the evaporation from phreatic water amount accumulation amount of each breeding time of crop is found out from measured data data
When, if maximum value not within the time for calculating, chooses the evaporation from phreatic water of the corresponding breeding time (i) in measured data data
The maximum value of accumulation amount is calculated value (Etm)iIf maximum value appeared in the time for calculating, rounded up with the maximum value
Value after (ratio for guaranteeing yield and evaporation from phreatic water amount is not 1) is calculated value (Etm)i。
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110955977A (en) * | 2019-12-03 | 2020-04-03 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | Calculation method for bare land and rainy day diving evaporation |
| CN110990762A (en) * | 2019-11-07 | 2020-04-10 | 上海勘察设计研究院(集团)有限公司 | Calculation method for rapidly determining fluctuation characteristics of diving space |
| CN111105320A (en) * | 2019-12-05 | 2020-05-05 | 中国水利水电科学研究院 | Method for predicting crop yield based on waterlogging stress |
| CN113656756A (en) * | 2021-08-26 | 2021-11-16 | 中国水利水电科学研究院 | Method for calculating critical burial depth of boundary groundwater between oasis and transition zone of inland river arid region |
-
2019
- 2019-04-28 CN CN201910348605.2A patent/CN110059980A/en active Pending
Non-Patent Citations (3)
| Title |
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| MING LEI ET.AL.: "Effect of water sensitivity index on soybean under multi-level groundwater control", 《台湾水利》 * |
| 侯琼 等: "基于Jensen模型的内蒙古河套灌区春玉米水分生产函数研究", 《干旱地区农业研究》 * |
| 朱梅 等: "淮北平原农作物对地下水利用量实验研究", 《地下水》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110990762A (en) * | 2019-11-07 | 2020-04-10 | 上海勘察设计研究院(集团)有限公司 | Calculation method for rapidly determining fluctuation characteristics of diving space |
| CN110990762B (en) * | 2019-11-07 | 2023-06-20 | 上海勘察设计研究院(集团)有限公司 | Calculation method for rapidly determining fluctuation characteristics of diving water level |
| CN110955977A (en) * | 2019-12-03 | 2020-04-03 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | Calculation method for bare land and rainy day diving evaporation |
| CN111105320A (en) * | 2019-12-05 | 2020-05-05 | 中国水利水电科学研究院 | Method for predicting crop yield based on waterlogging stress |
| CN111105320B (en) * | 2019-12-05 | 2022-09-02 | 中国水利水电科学研究院 | Method for predicting crop yield based on waterlogging stress |
| CN113656756A (en) * | 2021-08-26 | 2021-11-16 | 中国水利水电科学研究院 | Method for calculating critical burial depth of boundary groundwater between oasis and transition zone of inland river arid region |
| CN113656756B (en) * | 2021-08-26 | 2024-06-04 | 中国水利水电科学研究院 | Method for calculating critical buried depth of groundwater at boundary of oasis and transition zone in arid region of inland river |
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