CN112730800A - Online measuring method for field water holding capacity - Google Patents
Online measuring method for field water holding capacity Download PDFInfo
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- CN112730800A CN112730800A CN202011474493.4A CN202011474493A CN112730800A CN 112730800 A CN112730800 A CN 112730800A CN 202011474493 A CN202011474493 A CN 202011474493A CN 112730800 A CN112730800 A CN 112730800A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000002689 soil Substances 0.000 claims abstract description 56
- 238000012360 testing method Methods 0.000 claims abstract description 20
- 238000003973 irrigation Methods 0.000 claims abstract description 14
- 230000002262 irrigation Effects 0.000 claims abstract description 14
- 238000004891 communication Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims abstract description 4
- 238000001704 evaporation Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 3
- 229920006255 plastic film Polymers 0.000 claims description 3
- 238000009333 weeding Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 abstract description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 240000006162 Chenopodium quinoa Species 0.000 description 1
- 235000015493 Chenopodium quinoa Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000011005 laboratory method Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
- G01N33/246—Earth materials for water content
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
- G01N33/245—Earth materials for agricultural purposes
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- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The invention relates to the technical field of agriculture. Aiming at providing an on-line measuring method of the water capacity in the field, which comprises the following steps: A. selecting an irrigation cell; B. leveling the soil and constructing ridges; C. excavating a foundation pit of the equipment; D. sensor installation: the soil moisture sensor is connected with the Internet of things data acquisition terminal, and data detected by the soil moisture sensor is collected through the Internet of things data acquisition terminal; the Internet of things data acquisition terminal is in communication connection with the cloud server; E. irrigating; F. detecting; G. and (6) giving a report. The method is simple and easy to implement, avoids the requirements of experiment professionals, has less manual investment, obtains large and abundant data information amount, and has higher reliability of direct test in undisturbed soil.
Description
Technical Field
The invention relates to the technical field of agriculture, in particular to an online measuring method of field water holding capacity.
Background
The water resource contradiction of China is prominent, the agricultural water consumption accounts for 70 percent of the total amount, and the tasks of agricultural water conservation, drought resistance, harvest preservation, grain safety protection and the like are difficult. In agricultural drought level assessment and agricultural precision irrigation decision, the humidity index of soil is the most important parameter. However, the moisture condition determining the growth and development of crops is a problem of effective water of soil, and the effective water humidity ranges of soils with different textures have large difference. Whether the moisture conditions for the growth and development of crops are proper or not needs to be judged by the percentage of the upper limit value (namely the field moisture capacity) of the available water of the soil.
The field water capacity refers to that after the soil with deeper underground water and good drainage is fully irrigated or rainfall, the water is allowed to fully seep downwards, the water is prevented from evaporating, and the stable soil water content which can be maintained by a soil profile after a certain time is up to the soil water available for most plants. The field water holding capacity has wide application value and application requirements in agricultural drought-resistant decision and irrigation district water resource scheduling, especially in agricultural water-saving accurate irrigation. At present, the method for field moisture retention measurement by scientific research institutions mainly comprises the following steps: cell irrigation and indoor measurements. The methods belong to laboratory methods, have high precision, but are labor-consuming, time-consuming, can be performed by professional institutions and professionals, have poor practicability and are difficult to popularize and apply.
Disclosure of Invention
The invention aims to provide an online measuring method for field water capacity, which utilizes the modern Internet of things technology to measure the field water capacity by a more efficient, more convenient and more universal method and provides services for agricultural scientific research, water resource planning and scheduling, agricultural production and the like.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
an on-line measuring method of field water capacity comprises the following steps:
A. selecting an irrigation cell: opening up a test cell in a field to be measured;
B. leveling soil and constructing ridges: weeding and leveling the test cell; constructing a ridge around the test cell for filling water;
C. excavating a foundation pit of equipment: excavating a foundation pit in the middle of the test cell, wherein the size of the foundation pit is suitable for conveniently placing a soil moisture sensor;
D. sensor installation: transversely inserting a soil moisture sensor into the side wall of the foundation pit, wherein the insertion position is matched with the position of a soil layer to be detected, and backfilling the foundation pit with original soil after the soil moisture sensor is inserted; the soil moisture sensor is connected with the Internet of things data acquisition terminal, and data detected by the soil moisture sensor is collected through the Internet of things data acquisition terminal; the Internet of things data acquisition terminal is in communication connection with the cloud server;
E. and (3) irrigation: pouring enough water into the test cell, and covering a plastic film to prevent evaporation;
F. and (3) detection: starting the data acquisition terminal of the Internet of things, continuously reading soil moisture data returned by the soil moisture sensor, and uploading the soil moisture data to the cloud server;
G. and (4) issuing a report: and the cloud server processes the data, generates a soil humidity curve and compiles a field water holding capacity monitoring result report.
Preferably, the area of the test cell is 2m × 2m, and the depth of the foundation pit is determined according to the depth of the soil layer to be monitored.
Preferably, in the step G and the report issuing, when the soil humidity difference is less than 2% within 24 hours, the last numerical value is taken as the basis of the field water capacity for compiling the report.
The beneficial effects of the invention are concentrated and expressed as follows: according to the field water capacity physical definition, a soil moisture sensor with a data interface is directly inserted into undisturbed soil, continuously read data are uploaded to a cloud server background through an internet of things data acquisition terminal, and the field water capacity is obtained after the data are analyzed. The method is simple and easy to implement, avoids the requirements of experiment professionals, has less manual investment, large and rich acquired data information and higher reliability of direct test in undisturbed soil.
Drawings
FIG. 1 is a graph of soil moisture in an example of the present invention.
Detailed Description
Preparing equipment: the soil moisture sensor is provided with a data interface and is connected with the Internet of things data acquisition terminal, and the data detected by the soil moisture sensor is collected through the Internet of things data acquisition terminal; and the data acquisition terminal of the Internet of things is in communication connection with the cloud server. The soil moisture sensor has the advantages that specific models are more, the models can be selected in conventional models sold in the market, and data can be transmitted towards the data acquisition terminal of the Internet of things as long as the data interface is provided. The internet of things data acquisition terminal is used for receiving data returned by the soil moisture sensor and uploading the data to the cloud server, and the specific way of uploading the data can be Ethernet, WIFI, satellite signals and the like, and the specific mode is not limited.
According to the method, the field water capacity of a certain chenopodium quinoa base clamped by Dongchuan mop is detected:
A. selecting an irrigation cell: and (3) opening a test cell with the area of 2m by 2m in the field to be measured, and weeding and leveling the test cell.
B. Leveling land and constructing ridges: constructing a ridge with the height of 10cm around the test cell so as to facilitate water irrigation;
C. excavating a foundation pit of equipment: excavating a foundation pit with the length of 30cm, the width of 20cm and the depth of 25cm in the middle of the test cell;
D. sensor installation: and transversely inserting the soil moisture sensor into the side wall of the foundation pit at the depth of 20cm, backfilling the foundation pit with original soil after the insertion is finished, and referring to the soil compaction degree of other positions in the test cell according to the backfilling compaction degree.
E. And (3) irrigation: sufficient water is poured into the test cell to ensure that the water volume is over saturated, and a plastic film is covered to prevent evaporation.
F. And (3) detection: and the data acquisition terminal of the Internet of things continuously receives the returned data of the soil moisture sensor and uploads the data to the cloud server.
G. And (4) issuing a report: the cloud server processes the data and generates a soil humidity curve and a field water capacity report, wherein the soil humidity curve is shown in the attached figure 1.
Through observation: before irrigation, the monitored volume water content of the soil is 20.5 percent; after irrigation, the volume water content of the soil is increased to about 50 percent and gradually decreased to about 28.6 percent within half an hour, which indicates that gravity infiltration is fast; the data then slowly declined and remained at 27.0% position for more than 24 hours with a numerical fluctuation of ± 1.8%. When the cloud server processes the data, the last numerical value is the field water capacity when the soil humidity difference is less than 2% within 24 hours, and the field water capacity is reported to be 27.0% according to the regulations. This also complies with the provisions of GB/T32136-.
In order to facilitate managers and workers to obtain field water-holding capacity data in real time, the cloud server can also send the generated field water-holding capacity report to the user side, and the specific user side can adopt a mobile phone, a PC (personal computer), a tablet personal computer and the like.
Claims (3)
1. An on-line measuring method of field water capacity is characterized by comprising the following steps:
A. selecting an irrigation cell: opening up a test cell in a field to be measured;
B. leveling land and constructing ridges: weeding and leveling the test cell; constructing a ridge around the test cell for filling water;
C. excavating a foundation pit of equipment: excavating a foundation pit in the middle of the test cell, wherein the size of the foundation pit is suitable for conveniently placing a soil moisture sensor;
D. sensor installation: transversely inserting a soil moisture sensor into the side wall of the foundation pit, wherein the insertion position is matched with the position of a soil layer to be detected, and backfilling the foundation pit with original soil after the soil moisture sensor is inserted; the soil moisture sensor is connected with the Internet of things data acquisition terminal, and data detected by the soil moisture sensor is collected through the Internet of things data acquisition terminal; the Internet of things data acquisition terminal is in communication connection with the cloud server;
E. and (3) irrigation: pouring enough water into the test cell, and covering a plastic film to prevent evaporation;
F. and (3) detection: starting the data acquisition terminal of the Internet of things, continuously reading soil moisture data returned by the soil moisture sensor, and uploading the soil moisture data to the cloud server;
G. and (4) issuing a report: and the cloud server processes the data, generates a soil humidity curve and compiles a field water holding capacity monitoring result report.
2. The method for on-line measurement of field capacity of claim 1, wherein: the area of the test cell is 2m x 2m, and the depth of the foundation pit is determined according to the depth of the soil layer to be monitored.
3. The method for on-line measurement of field capacity of claim 1, wherein: and G, issuing a report, wherein when the soil humidity difference is less than 2% within 24 hours, the last numerical value is taken as the basis of field water capacity to compile the report.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011474493.4A CN112730800A (en) | 2020-12-14 | 2020-12-14 | Online measuring method for field water holding capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011474493.4A CN112730800A (en) | 2020-12-14 | 2020-12-14 | Online measuring method for field water holding capacity |
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| Publication Number | Publication Date |
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| CN112730800A true CN112730800A (en) | 2021-04-30 |
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| CN202011474493.4A Pending CN112730800A (en) | 2020-12-14 | 2020-12-14 | Online measuring method for field water holding capacity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115876982A (en) * | 2023-02-14 | 2023-03-31 | 华南农业大学 | Device and method for rapidly measuring field water capacity |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205091002U (en) * | 2015-11-10 | 2016-03-16 | 武汉大学 | Paddy field water regime integrated monitoring system |
| CN107494215A (en) * | 2017-10-16 | 2017-12-22 | 南京腾图节能科技有限公司 | A kind of field automatic dripping irrigation dispatching device |
| CN110050673A (en) * | 2019-04-30 | 2019-07-26 | 黄河水利委员会黄河水利科学研究院 | A kind of intelligent irrigation management system |
| CN110320345A (en) * | 2019-07-17 | 2019-10-11 | 吉林大学 | A kind of portable field capacity auto testing instrument and test method |
| CN110763821A (en) * | 2019-09-20 | 2020-02-07 | 河南锐利特计算机科技有限公司 | Method and device for measuring water-holding capacity of field |
-
2020
- 2020-12-14 CN CN202011474493.4A patent/CN112730800A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205091002U (en) * | 2015-11-10 | 2016-03-16 | 武汉大学 | Paddy field water regime integrated monitoring system |
| CN107494215A (en) * | 2017-10-16 | 2017-12-22 | 南京腾图节能科技有限公司 | A kind of field automatic dripping irrigation dispatching device |
| CN110050673A (en) * | 2019-04-30 | 2019-07-26 | 黄河水利委员会黄河水利科学研究院 | A kind of intelligent irrigation management system |
| CN110320345A (en) * | 2019-07-17 | 2019-10-11 | 吉林大学 | A kind of portable field capacity auto testing instrument and test method |
| CN110763821A (en) * | 2019-09-20 | 2020-02-07 | 河南锐利特计算机科技有限公司 | Method and device for measuring water-holding capacity of field |
Non-Patent Citations (2)
| Title |
|---|
| 王高英等: "土壤田间持水量测定对比试验分析", 《陕西水利》 * |
| 鲍继骞等: "田间持水量测定方法试验", 《气象》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115876982A (en) * | 2023-02-14 | 2023-03-31 | 华南农业大学 | Device and method for rapidly measuring field water capacity |
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