CN116818644A - Accurate automatic control salt is salt-tolerant to appraise soil pond of crop of salinity - Google Patents
Accurate automatic control salt is salt-tolerant to appraise soil pond of crop of salinity Download PDFInfo
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- CN116818644A CN116818644A CN202311109597.9A CN202311109597A CN116818644A CN 116818644 A CN116818644 A CN 116818644A CN 202311109597 A CN202311109597 A CN 202311109597A CN 116818644 A CN116818644 A CN 116818644A
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- 239000002689 soil Substances 0.000 title claims abstract description 115
- 150000003839 salts Chemical class 0.000 title claims abstract description 109
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 147
- 239000013505 freshwater Substances 0.000 claims abstract description 33
- 230000015784 hyperosmotic salinity response Effects 0.000 claims abstract description 20
- 230000001276 controlling effect Effects 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims abstract description 9
- 238000005325 percolation Methods 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000005086 pumping Methods 0.000 claims abstract description 4
- 238000003973 irrigation Methods 0.000 claims description 14
- 230000002262 irrigation Effects 0.000 claims description 14
- 239000004576 sand Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 7
- 230000033558 biomineral tissue development Effects 0.000 claims description 6
- 239000012267 brine Substances 0.000 claims 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims 1
- 239000010410 layer Substances 0.000 description 17
- 238000011065 in-situ storage Methods 0.000 description 13
- 239000003513 alkali Substances 0.000 description 11
- 238000012544 monitoring process Methods 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000012216 screening Methods 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000003621 irrigation water Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000009394 selective breeding Methods 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
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B77/00—Machines for lifting and treating soil
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Environmental Sciences (AREA)
- Analytical Chemistry (AREA)
- Immunology (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Ecology (AREA)
- Health & Medical Sciences (AREA)
- Pathology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a crop salt tolerance identification soil pool capable of accurately and automatically controlling salinity, which comprises a concrete pool, wherein a percolation layer is arranged at the bottom of the concrete pool, raw soil is paved on the percolation layer, a water collecting pool is arranged on one side of the concrete pool, and a drainage assembly for draining water is arranged in the water collecting pool; a detection component for detecting the salinity of the original soil is also arranged in the concrete pool; a fresh water bucket and a salty water bucket are arranged on one side of the concrete pool in parallel, and a regulating component for regulating and controlling the salinity of the original soil is arranged on the fresh water bucket and the salty water bucket and used for pumping water into the concrete pool; the invention has high automation degree, the conventional salt pond salinity regulation and control mostly adopts manual means to irrigate or add salt, and the operation and management cost is high.
Description
Technical Field
The invention relates to the technical field of agricultural automation control, in particular to a crop salt tolerance identification soil pool capable of accurately and automatically controlling salt content.
Background
Saline-alkali soil is an important source of capacity expansion, quality improvement and synergy of cultivated lands. The comprehensive utilization of the saline-alkali soil is developed, and the development of saline-alkali tolerant crops is of great significance to the guarantee of grain safety. In recent years, saline-alkali soil development and utilization gradually changes from the past saline-alkali soil adaptation crop treatment to the present selective breeding of saline-alkali tolerant plants adaptation saline-alkali soil, and the requirements on standardization and reliability of screening and identification of the saline-alkali tolerant crops are higher. At present, most saline-alkali tolerant germplasm resources still stay in a laboratory culture stage, and screening and identification are needed in a field environment. However, the method is influenced by large space-time variability of the saline-alkali environment in the field, and the problems of consistency, poor contrast and the like of the salt are directly planted in the field, so that the method for screening and identifying the salt tolerance of the crops by the soil pond (salt pond) can accurately control the salt tolerance of the crops, and plays an important role in accelerating the screening, identifying and popularization and application of salt tolerance germplasm resources in the field.
In recent years, there are many cases of salt pond construction for the purpose of screening and identifying salt tolerance of crops. For example, chinese patent CN 216082644U proposes a soil salinity constancy device for determining the salinity tolerance threshold of crops, comprising: the soil column container is provided with a plurality of soil water salt data acquisition assemblies at intervals along the height direction of the soil column container, so that salt tolerance thresholds of different growth stages of crops can be accurately measured, and the soil column container is used for guiding a field irrigation drainage decision.
At present, one way to use more is to backfill the salinized soil with a specific salinity into a closed concrete pool to achieve the required soil salinity. Under the field environment, the soil salinity of the salt pond is very uneven in time and space under the influence of the surface aggregation of the evaporable salt and the rainfall leaching, so that the real salinity environments of the crops planted in different time periods are inconsistent. In addition, as the salt pond back cover is not provided with a matched drainage system, the underground water is extremely easy to accumulate in the salt pond under the influence of rainfall and irrigation and rises to a crop root system distribution layer, so that the accuracy of saline-alkali tolerance identification is affected. Another common way is to regularly irrigate the salt pond with saline water of a specific salt content to maintain the soil at a certain salt content. However, due to various factors such as soil volume weight, porosity and soil type, the salt content of the soil formed after the saline water irrigates the soil has uncertainty, and moreover, once the salt content in the salt pond exceeds a set salt threshold value, blind irrigation is difficult to readjust the salt content to the range of the expected salt threshold value. Therefore, the simple multiple salt water irrigation is difficult to accurately control the soil salinity in the salt pond to a desired threshold value; likewise, such salt ponds do not consider a sophisticated drainage system to avoid flooding problems.
Disclosure of Invention
The invention aims to provide a crop salt tolerance identification soil pool capable of accurately and automatically controlling salt content so as to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the crop salt tolerance identification soil pool capable of accurately and automatically controlling salt comprises a concrete pool, wherein a percolation layer is arranged at the bottom of the concrete pool, raw soil is paved on the percolation layer, a water collecting pool is arranged on one side of the concrete pool, and a drainage assembly for draining water is arranged in the water collecting pool;
a detection component for detecting the salinity of the original soil is also arranged in the concrete pool;
and a fresh water bucket and a salty water bucket are arranged on one side of the concrete pool in parallel, and a regulating component for regulating and controlling the salinity of the original soil is arranged on the fresh water bucket and the salty water bucket and used for pumping water into the concrete pool.
As a further scheme of the invention: the drainage assembly comprises a submersible pump, the submersible pump is arranged at the bottom of the water collecting tank, and a drainage pipeline is arranged at the output end of the water collecting tank.
As still further aspects of the invention: the detection assembly comprises a water temperature salt sensor which is buried in original soil, and a water level sensor for detecting the water level is further arranged in the water collecting tank.
As still further aspects of the invention: the regulation and control assembly comprises a salt water pipe, the salt water pipe is arranged inside a salt water barrel, a fresh water pipe is arranged inside the fresh water barrel, a pipeline tee joint is arranged between the fresh water pipe and the upper end of the salt water pipe, the other port of the pipeline tee joint is connected with a water supply pipeline, a plurality of drip irrigation belts are arranged at the position, above a concrete pond, of the water supply pipeline, a self-priming booster pump is arranged on the water supply pipeline, and wireless electric ball valves are arranged on the fresh water pipe and the salt water pipe.
As still further aspects of the invention: still include signal processor and converter, it all adopts cable and converter electric connection to inhale booster pump and immersible pump certainly, temperature salt sensor, water level sensor and converter all adopt signal line and signal processor electric connection.
As still further aspects of the invention: the infiltration layer consists of a cobble layer and sand coating, wherein the cobble layer is arranged at the bottom, the cobble particle size is 2-3cm, the laying thickness is 10-15cm, the sand coating layer is laid on the cobble layer, the sand coating particle size is 3-5mm, and the laying thickness is 10-15cm.
As still further aspects of the invention: the thickness of the original soil is larger than 2m, and the water temperature salt sensor is buried at the position of 0.2m of the depth of the original soil.
As still further aspects of the invention: the bottom of the water collecting tank is lower than the bottom of the concrete tank by more than 0.5m and is used for placing the submersible pump.
As still further aspects of the invention: the mineralization degree of the water in the fresh water bucket is not higher than 1 g/kg.
As still further aspects of the invention: the mineralization degree of the water in the salty water bucket is 3-5 times of the expected salt content in the original soil.
Compared with the prior art, the invention has the beneficial effects that:
1. high automation degree
The conventional salt pond salinity regulation and control mostly adopts manual means to irrigate or add salt, and has high running and managing cost.
2. Constructing a model for converting in-situ salt content and total salt content of soil
The salt content value of the original soil in-situ salt monitoring cannot accurately represent the total salt content of the soil due to the comprehensive influence of various factors such as the water content of the soil, the soil temperature, the total salt content of the soil and the like, so that the total salt content of the soil cannot be accurately controlled completely by the feedback of the original soil in-situ salt monitoring. According to the invention, a soil in-situ salinity and total salinity conversion model is constructed through the theoretical model and field observation data, the root mean square error of the converted true value and the converted analog value is within 5%, and the accurate control of the soil salinity based on in-situ soil salinity monitoring is realized.
3. The control precision of soil salinity and underground water level in the salt pond is high
The conventional salt pond is limited by a salt regulation theory, soil salt in the salt pond has obvious space-time variation characteristics, and is difficult to maintain uniform soil salt. The invention is based on monitoring feedback real-time regulation, fundamentally solves the problem that the salinity and the underground water level are difficult to accurately control, and has remarkable creativity.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a graph showing the comparison of measured soil salinity values with in-situ monitoring values of 1:1 in the present invention.
Wherein: 1. a water temperature salt sensor; 2. a water level sensor; 3. a signal line; 4. a signal processor; 5. a frequency converter; 6. a cable; 7. a self priming booster pump; 8. submersible pump; 9. a pipe tee; 10. wireless electric ball valve; 11. a fresh water barrel; 12. a salty water bucket; 13. a water supply pipe; 14. a concrete pool; 15. a percolation layer; 16. a water collecting tank; 17. raw soil; 18. a drip irrigation belt; 19. a salt water pipe; 20. a fresh water pipe; 21. and a drainage pipeline.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, in the embodiment of the invention, a crop salt tolerance identification soil pool capable of accurately and automatically controlling salt content comprises a concrete pool 14, wherein the periphery and the bottom of the concrete pool 14 are watertight partitions, a 20-30cm percolating layer 15 is paved at the bottom, one side of the percolating layer is communicated with a water collecting pool 16, the bottom of the concrete pool 14 is provided with the percolating layer 15, the percolating layer 15 consists of a cobble layer and sand cover, the cobble layer is arranged at the bottom, the cobble particle size is 2-3cm, the paving thickness is 10-15cm, the sand cover layer is paved on the cobble layer, the sand cover particle size is 3-5mm, and the paving thickness is 10-15cm.
The percolating layer 15 is covered with raw soil 17, the thickness of the raw soil 17 is larger than 2m, and the water temperature salt sensor 1 is buried in the raw soil 17 at the depth of 0.2 m. A water collecting tank 16 is arranged on one side of the concrete tank 14, and a drainage assembly for draining water is arranged in the water collecting tank 16; the drainage assembly comprises a submersible pump 8, the submersible pump 8 is arranged at the bottom of a water collecting tank 16, and a drainage pipeline 21 is arranged at the output end of the water collecting tank 16; the bottom of the water collecting tank 16 is lower than the bottom of the concrete tank 14 by more than 0.5m and is used for placing the submersible pump 8, when the signal processor 4 receives the signal of the water level sensor 2, the water level signal is compared with a set water level threshold, when the water level signal value is higher than the upper limit of the allowable range of the set water level threshold, the signal processor 4 gives an instruction to the frequency converter 5 to start the submersible pump 8 to drain water outside the soil tank until the water level is reduced to the set water level threshold, and then the signal processor 4 gives an instruction to the frequency converter 5 to close the submersible pump 8.
A detection component for detecting the salinity of the original soil 17 is also arranged in the concrete tank 14; the detection assembly comprises a water temperature salt sensor 1, wherein the water temperature salt sensor 1 is buried in original soil 17, and a water level sensor 2 for detecting the water level is further arranged in the water collecting tank 16; still include signal processor 4 and converter 5, from inhaling booster pump 7 and immersible pump 8 all adopt cable 6 and converter 5 electric connection, temperature salt sensor 1, water level sensor 2 and converter 5 all adopt signal line 3 and signal processor 4 electric connection.
When the signal processor 4 receives the signal of the water temperature and salt sensor 1, the following signal transmission logic is made according to the set soil salinity threshold value:
(1) when the soil salinity signal is smaller than the lower limit of the salinity threshold allowable range, the signal processor 4 gives an instruction to the frequency converter 5 to start the self-priming booster pump 7, meanwhile gives an instruction to the wireless electric ball valve 10, closes the fresh water side ball valve, opens the salt water side ball valve, and starts to convey salt water irrigation until the salinity monitored by the water temperature and salinity sensor 1 reaches the salinity threshold, and then the signal processor 4 gives an instruction to the frequency converter 5 to close the self-priming booster pump 7;
(2) when the soil salinity signal is larger than the upper limit of the salinity threshold allowable range, the signal processor 4 gives an instruction to the frequency converter 5 to start the self-priming booster pump 7, meanwhile gives an instruction to the wireless electric ball valve 10, opens the fresh water side ball valve, closes the salt water side ball valve, and the pipeline starts to convey fresh water irrigation until the salinity monitored by the water temperature and salinity sensor 1 reaches the salinity threshold, and then the signal processor 4 gives an instruction to the frequency converter 5 to close the self-priming booster pump 7;
(3) when the soil salinity signal is between the upper and lower salinity threshold allowable ranges, the signal processor 4 does not issue instructions to control the self-priming booster pump 7.
The feedback control chain of the water temperature salt sensor 1- (4-) frequency converter 5- (5-) self-priming booster pump 7 operates once every 3 days, so that the phenomenon that soil ponds are watered and waterlogged due to excessive irrigation is prevented, the feedback control chain of the water level sensor 2- (4-) frequency converter 5- (5-) submersible pump 8 operates in real time, and the safety accident caused by overflow of the water collecting pond 16 due to heavy rainfall in summer is prevented.
A fresh water bucket 11 and a salty water bucket 12 are arranged on one side of the concrete pool 14 in parallel, the mineralization degree of water in the fresh water bucket 11 is not higher than 1 g/kg, and the mineralization degree of water in the salty water bucket 12 is 3-5 times of the expected salt content in the original soil 17, namely; the expected salt content in the soil pool is 3 g/kg, and the salinity of the saline water is 9-15 g/kg. The fresh water tub 11 and the salt water tub 12 may have shapes including, but not limited to, tub shapesIs a reservoir, a water pipeline, a reservoir and the like, the volume is not lower than the single water filling amount (50 mm) of the soil pond, and the volume V (m) 3 ) =0.05mχ soil pool area a (m 2 ）。
The fresh water barrel 11 and the salty water barrel 12 are provided with a regulating component for regulating and controlling the salinity of the original soil 17 by pumping water into the concrete pool 14; the regulation and control assembly comprises a salt water pipe 19, the salt water pipe 19 is arranged inside a salt water barrel 12, a fresh water pipe 20 is arranged inside the fresh water barrel 11, a pipeline tee joint 9 is arranged between the fresh water pipe 20 and the upper end of the salt water pipe 19, the other port of the pipeline tee joint 9 is connected with a water supply pipeline 13, a plurality of drip irrigation belts 18 are arranged at the position, above a concrete pond 14, of the water supply pipeline 13, a self-priming booster pump 7 is arranged on the water supply pipeline 13, and wireless electric ball valves 10 are arranged on the fresh water pipe 20 and the salt water pipe 19. The self-priming booster pump 7 can pump irrigation water and boost pressure, the irrigation water is conveyed to the soil pool through the water supply pipeline 13, a plurality of drip irrigation belts 18 are arranged at the tail end of the water supply pipeline 13, fresh water/saline water can be uniformly irrigated to the soil pool in a small flow mode, and salinity can be regulated and controlled as uniformly as possible.
The working principle of the invention is as follows: when the salt pond salinity automatic regulation and control work, after the signal processor 4 receives the signal of the water temperature and salt sensor 1, the following signal transmission logic can be made according to the set soil salinity threshold value: (1) when the soil salinity signal is smaller than the lower limit of the salinity threshold allowable range, the signal processor 4 gives an instruction to the frequency converter 5 to start the self-priming booster pump 7, meanwhile gives an instruction to the wireless electric ball valve 10, closes the fresh water side ball valve, opens the salt water side ball valve, and starts to convey salt water irrigation until the salinity monitored by the water temperature and salinity sensor 1 reaches the salinity threshold, and then the signal processor 4 gives an instruction to the frequency converter 5 to close the self-priming booster pump 7; (2) when the soil salinity signal is larger than the upper limit of the salinity threshold allowable range, the signal processor 4 gives an instruction to the frequency converter 5 to start the self-priming booster pump 7, meanwhile gives an instruction to the wireless electric ball valve 10, opens the fresh water side ball valve, closes the salt water side ball valve, and the pipeline starts to convey fresh water irrigation until the salinity monitored by the water temperature and salinity sensor 1 reaches the salinity threshold, and then the signal processor 4 gives an instruction to the frequency converter 5 to close the self-priming booster pump 7; (3) when the soil salinity signal is between the upper and lower salinity threshold allowable ranges, the signal processor 4 does not issue instructions to control the self-priming booster pump 7. When the salt pond underground water level automatic regulation and control work is performed, the signal processor 4 compares the water level signal with a set water level threshold when receiving the signal of the water level sensor 2, when the water level signal value is higher than the upper limit of the allowable range of the set water level threshold, the signal processor 4 gives an instruction to the frequency converter 5 to start the submersible pump 8 to drain water to the outside of the soil pond until the water level is reduced to the set water level threshold, and then the signal processor 4 gives an instruction to the frequency converter 5 to close the submersible pump 8.
In-situ monitoring of salt and real soil total salt conversion model: the in-situ soil salinity monitored by the water temperature and salt sensor 1 is influenced by various factors such as the total salt content of soil, the soil water content, the temperature, the volume weight, the porosity and the like, so that the in-situ monitoring of the salt content is not a simple linear relation with the total salt content of the real soil, and the invention is based on the theory and test parameter calibration (the soil saturation) of the steady-state assumption of the soil conductivity (namely, the soil solution conductivity=the soil film water conductivity=the soil particle conductivity)SP=0.45, soil volume weightρ b =1.4 g/cm3, soil type determining coefficientk s =1.25), the following in-situ monitoring salt and true soil total salt content conversion model was constructed.
Wherein EC is a For in-situ monitoring of salinity, θw is the water content of the soil volume, the water content and the salinity can be measured by a water temperature salt sensor 1, SP is the saturated water content of the soil, and the value of the test area is 0.45, ρ b The value of the test area is 1.4 g/cm3 for the soil volume weight,k s for the relevant conversion coefficient of the soil type, the test has a value of 1.25, the SC is the total salt content of the soil, and the total Salt Content (SC) of the soil can be obtained by substituting the formulas (1-2) - (1-5) into the formula (1-1), so that the conversion problem of in-situ monitoring of the salt and the total salt content of the real soil is solved. The model is subjected to comparative analysis of real value and analog value after actual sampling conversionThe root mean square error of the two is within 5%, so that the accurate determination of soil salinity based on in-situ soil salinity monitoring is realized.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Although the present disclosure describes embodiments, not every embodiment contains only one technical solution, and those skilled in the art should understand that the disclosure as a whole may also be appropriately combined with the technical solutions in the examples to form other embodiments that can be understood by those skilled in the art.
Claims (10)
1. The utility model provides a accurate automatic control salt tolerance of crop appraises soil pond, includes concrete pond (14), its characterized in that: the bottom of the concrete tank (14) is provided with a percolation layer (15), raw soil (17) is paved on the percolation layer (15), one side of the concrete tank (14) is provided with a water collecting tank (16), and a drainage assembly for draining water is arranged in the water collecting tank (16);
a detection component for detecting the salinity of the original soil (17) is further arranged in the concrete tank (14);
the fresh water bucket (11) and the salty water bucket (12) are arranged on one side of the concrete pool (14) in parallel, and a regulating component for regulating and controlling the salinity of the original soil (17) by pumping water into the concrete pool (14) is arranged on the fresh water bucket (11) and the salty water bucket (12).
2. The crop salt tolerance identification soil pond with accurate automatic control of salt according to claim 1, wherein the drainage assembly comprises a submersible pump (8), the submersible pump (8) is arranged at the bottom of a water collecting pond (16), and a drainage pipeline (21) is arranged at the output end of the water collecting pond (16).
3. The crop salt tolerance identification soil pond with accurate automatic salt control according to claim 2, wherein the detection component comprises a water temperature salt sensor (1), the water temperature salt sensor (1) is buried in original soil (17), and a water level sensor (2) for detecting a water level is further arranged in the water collecting pond (16).
4. A crop salt tolerance appraisal soil pond of accurate automatic control salinity according to claim 3, characterized in that, regulation and control subassembly includes salt water pipe (19), salt water pipe (19) are established inside salt water bucket (12), be equipped with fresh water pipe (20) inside fresh water bucket (11), be equipped with pipeline tee bend (9) between fresh water pipe (20) and salt water pipe (19) upper end, another port of pipeline tee bend (9) is connected with water supply pipe (13), the position that water supply pipe (13) are located concrete pond (14) top is equipped with a plurality of drip irrigation zone (18), be equipped with on water supply pipe (13) from inhaling booster pump (7), all install wireless electronic ball valve (10) on fresh water pipe (20) and salt water pipe (19).
5. The crop salt tolerance identification soil pond with accurate automatic salt control according to claim 4, further comprising a signal processor (4) and a frequency converter (5), wherein the self-priming booster pump (7) and the submersible pump (8) are electrically connected with the frequency converter (5) through cables (6), and the water temperature salt sensor (1), the water level sensor (2) and the frequency converter (5) are electrically connected with the signal processor (4) through signal wires (3).
6. The crop salt tolerance identification soil pond with accurate automatic salt control according to claim 1, wherein the percolation layer (15) consists of a cobble layer and a sand cover, the cobble layer is arranged at the bottom, the cobble particle size is 2-3cm, the paving thickness is 10-15cm, the sand cover layer is paved on the cobble layer, the sand cover particle size is 3-5mm, and the paving thickness is 10-15cm.
7. A crop salt tolerance identification soil pool with accurate automatic control of salt according to claim 3, wherein the thickness of the original soil (17) is more than 2m, and the water temperature salt sensor (1) is buried in the original soil (17) at a depth of 0.2 m.
8. The crop salt tolerance identification soil pond with accurate automatic control of salt according to claim 1, wherein the bottom of the water collection pond (16) is lower than the bottom of the concrete pond (14) by more than 0.5m for placing the submersible pump (8).
9. The crop salt tolerance identification soil pond with accurate automatic control of salt according to claim 1, wherein the mineralization degree of water in the fresh water barrel (11) is not higher than 1 g/kg.
10. The crop salt tolerance identification soil pond with accurate automatic control of salt according to claim 1, characterized in that the mineralization of the water in the brine barrel (12) is 3-5 times of the expected salt content in the original soil (17).
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| CN202311109597.9A CN116818644A (en) | 2023-08-31 | 2023-08-31 | Accurate automatic control salt is salt-tolerant to appraise soil pond of crop of salinity |
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| CN202311109597.9A CN116818644A (en) | 2023-08-31 | 2023-08-31 | Accurate automatic control salt is salt-tolerant to appraise soil pond of crop of salinity |
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| CN108464225A (en) * | 2018-03-14 | 2018-08-31 | 中国农业大学 | A kind of desert marginal zone sacsaoul wood drip irrigation system and sacsaoul wood implantation methods and application |
| CN111264224A (en) * | 2020-03-30 | 2020-06-12 | 河北省农林科学院滨海农业研究所 | Raw soil salt tolerance identification pool and application thereof |
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| CN203419820U (en) * | 2013-07-29 | 2014-02-05 | 华盛江泉集团有限公司 | Breeding waste water filtering and purifying pond |
| CN108298745A (en) * | 2017-12-19 | 2018-07-20 | 潍坊友容实业有限公司 | Salt-soda soil brackish water desalination treatment process |
| CN108271672A (en) * | 2018-01-31 | 2018-07-13 | 中国农业大学 | A method of avoid brackish water drip irrigation system douche from blocking |
| CN108464225A (en) * | 2018-03-14 | 2018-08-31 | 中国农业大学 | A kind of desert marginal zone sacsaoul wood drip irrigation system and sacsaoul wood implantation methods and application |
| CN111264224A (en) * | 2020-03-30 | 2020-06-12 | 河北省农林科学院滨海农业研究所 | Raw soil salt tolerance identification pool and application thereof |
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