CN106359003A - Water-saving and salt controlling irrigation device of secondary saline and alkaline land of irrigation area of Yellow River - Google Patents
Water-saving and salt controlling irrigation device of secondary saline and alkaline land of irrigation area of Yellow River Download PDFInfo
- Publication number
- CN106359003A CN106359003A CN201610769586.7A CN201610769586A CN106359003A CN 106359003 A CN106359003 A CN 106359003A CN 201610769586 A CN201610769586 A CN 201610769586A CN 106359003 A CN106359003 A CN 106359003A
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- Prior art keywords
- water
- irrigation
- dropper
- yellow river
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
-
- 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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
- A01C23/04—Distributing under pressure; Distributing mud; Adaptation of watering systems for fertilising-liquids
- A01C23/042—Adding fertiliser to watering systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/02—Combinations of filters of different kinds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Hydroponics (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention belongs to the field of farmland irrigation and discloses a water-saving and salt controlling irrigation device of a secondary saline and alkaline land of an irrigation area of the Yellow River. The water-saving and salt controlling irrigation device comprises a water pump, a self-washing filter, a fertilizer applying barrel, a sprinkling irrigation device and a drop irrigation device, wherein a water outlet of the water pump is connected with a water inlet of the self-washing filter through a water pipe; the water outlet of the self-washing filter is connected with the water inlet of the fertilizer applying barrel through a water pipe; and the water outlet of the fertilizer applying barrel is connected with the sprinkling irrigation device and the drop irrigation device. According to the water-saving and salt controlling irrigation device, the drop irrigation device is arranged at a region where the sprinkling irrigation device cannot irrigate; an irrigation manner of taking sprinkling irrigation as a main part and taking drop irrigation as an auxiliary part is adopted, so that water resources are saved; and the water-saving and salt controlling irrigation device provided by the invention has the advantages that water utilization amount is saved, the salt controlling effect is good and the irrigation efficiency is high, and has important meanings on farmland planting of the secondary saline and alkaline land of the irrigation area of the Yellow River.
Description
Technical field
The invention belongs to field of farm irrigation, dress irrigated by a kind of more particularly, to Yellow River irrigation secondary salinization of land water saving control salt
Put.
Background technology
Salt-soda soil is a species of salt aggregation, refers to that contained salinity inside soil has influence on the normal life of crop
Long, there are 99,130,000 hectares of salt-soda soils in current China.Most of region is accumulative relevant with Carbonates In Soil, thus basicity is general
All over higher, serious salt affected soil regional plant can hardly be survived.The principal element that impact saline-alkali soil is formed has: 1, weather bar
Part；2nd, geographical conditions；3rd, the soil texture and subsoil water；4th, the impact of river and sea water；5th, cultivation management is improper.
At present, China Shandong Henan two province Yellow River irrigation has reached 104, and wherein irrigated area more than 20,000 hectares for the area accounts for 70%,
It is related to 70 Duo Ge counties (city), irrigated area reaches 1,900,000 hectares, Yellow River irrigation is agricultural year, stable yields area mostly.The Yellow River run-off
Tendency analysis are uneven, spring crops need water season can introduce the water yield is on the low side, dry year even stops；With Upper-middle Reaches of The Yellow River
Exploitation, industrial or agricultural is cumulative with water, and the water yield flowing to downstream reduces therewith；And Yellow River irrigation irrigation quantity increases year by year for a long time
Many, and irrigation and drainage engineering is accordingly not kept pace with, the salinization of soil increases increasingly, has a strong impact on the fast of irrigated area agriculture-stock production
Speed development.Therefore, filling row's engineering construction in quickening irrigated area is supporting, improve irrigation water effect, and water-saving irrigation must be walked in Yellow River irrigation
Road.It is contemplated that the construction of water conservancy works for Yellow River irrigation is significant.
Content of the invention
Increase year by year for Yellow River irrigation water consumption in prior art, and because the row's of filling facility backwardness leads to the salinization of soil
Problem, present invention offer is a kind of can the amount of conserving water, the control Yellow River irrigation secondary salinization of land section that salt effect is good, irrigation efficiency is high
Water control salt irrigation rig.
For reaching above-mentioned purpose, the technical solution used in the present invention is: a kind of Yellow River irrigation secondary salinization of land water saving control salt
Irrigation rig, including water pump, self-cleaning filter, fertilising cylinder, rainer and drip irrigation appliance, the outlet of described water pump passes through
Water pipe connects the water inlet of self-cleaning filter, and the outlet of described self-cleaning filter connects the water inlet of fertilising cylinder by water pipe
Mouthful, the outlet of described fertilising cylinder passes through the water inlet of water pipe connecting tee pipe joint, and an outlet of tee pipe coupling is even
Connect rainer, another outlet of tee pipe coupling connects drip irrigation appliance, described drip irrigation appliance include eps filter layer,
Electromagnetic valve, soil moisture sensor and dropper band, the water inlet of described eps filter layer connects the outlet of fertilising cylinder, eps mistake
The outlet of filtering layer connects dropper band by water pipe, between described eps filter layer and dropper band, water (flow) direction is provided with pressure
Force regulating valve and electromagnetic valve, are provided with soil moisture sensor in the side of described dropper band, described soil moisture sensor
It is connected with controller, described controller is with each electromagnetic valve electricity in drip irrigation appliance in succession.
Preferably, drip irrigation appliance is arranged at the region that rainer can not be irrigated, using sprinkling irrigation based on, supplemented by drip irrigation
Irrigation method.
Preferably, pressure-regulating valve and tee pipe coupling be provided with the inlet pipeline of described rainer, described three
The outlet of connection for bbreather pipe connects the shower head of each branch road in rainer.
Preferably, evenly spaced in the cavity of described dropper band it is provided with fibers adsorption ring, in described fibers adsorption
The side of ring is provided with, according to water (flow) direction, the water dropper that hollow is in cylinder, and the outer surface of described water dropper is provided with inlet opening, and passes through
Inlet opening is fixedly connected on the periphery of dropper band, and the outer surface of described water dropper is provided with capillary tube, in the hollow of described water dropper
It is provided with eps foam filter pearl filter layer in inner chamber.
Further, described eps foam filters the inner chamber that pearl filter layer is horizontally set at water dropper.
Further, the hollow wall of described dropper band is provided with fixed plate, described fixed plate is provided with fixing hole,
The inlet opening installation end of described water dropper is provided with annular slot, described annular slot embeds and is installed in fixing hole.
Preferably, between described water pump and self-cleaning filter, water (flow) direction is provided with check-valves and pressure gauge.
Preferably, the water outlet pipeline of described fertilising cylinder is provided with water flow table.
By the utilization of technique scheme, the present invention compared with prior art has the advantages that
1st, the drip irrigation appliance of the present invention is arranged at the region that rainer can not be irrigated, using sprinkling irrigation based on, drip irrigation be
Auxiliary irrigation method, and it is provided with electromagnetic valve in the pipeline of drip irrigation appliance and soil moisture sensor can be preferably comprehensive
Cover implements to irrigate to farmland, has saved water resource；
2nd, the present invention, for the mode employing three filtrations in the pipeline of drip irrigation appliance, is respectively: self-cleaning filter,
Eps filter layer and eps foam filter pearl filter layer, to ensure to enter the water quality requirement of water dropper, reduce the blocking of water dropper, improve and drip
The service life of head；
3rd, the present invention is provided with fibers adsorption ring in drip irrigation zone, can be with the microorganism in adsorption moisture, and fibers adsorption
Ring can increase the mobility of water it is ensured that the impurity in water will not rest on the bottom surface of drip irrigation zone；
4th, the present invention, in the inlet opening installation end setting annular slot of water dropper, is convenient to water dropper and changes；
5th, the present invention adds compound potassium sulfate fertilizer in fertilising cylinder, and compound potassium sulfate fertilizer is subacidity fertilizer, is suitable in salt
Alkali is applied on the ground, and has the good action in improvement salt-soda soil.
A kind of Yellow River irrigation secondary salinization of land water saving control salt irrigation rig that the present invention provides, has the amount of conserving water, control
The advantage that salt effect is good, irrigation efficiency is high, the farmland planting for Yellow River irrigation secondary salinization of land is significant.
Brief description
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of dropper band in the present invention；(direction shown in arrow is water (flow) direction)
Fig. 3 is the principle thick stick figure of the present invention.
In figure: 1- water pump, 2- check-valves, 3- pressure gauge, 4- self-cleaning filter, 5- fertilising cylinder, 6- water flow table, 7-
Eps filter layer, 8- pressure-regulating valve, 9- shower head, 10- electromagnetic valve, 11- dropper band, 12- soil moisture sensor, 13- drips
Head, 14- capillary tube, 15-eps foam filters pearl filter layer, 16- fixed plate, 17- fibers adsorption ring.
Specific embodiment
With reference to specific embodiment, the technical scheme of this patent is described in more detail.
In describing the invention it is to be understood that term " on ", D score, " left " " right ", the instruction such as "front", "rear"
Orientation or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of description the present invention and simplification retouch
State, rather than instruction or the hint device of indication or element must have specific orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " set
Put ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be to be joined directly together it is also possible to be indirectly connected to by intermediary.For the ordinary skill in the art, can basis
Concrete condition understands above-mentioned term concrete meaning in the present invention.
Refer to Fig. 1-3, a kind of Yellow River irrigation secondary salinization of land water saving control salt irrigation rig, including water pump 1, self-cleaning
Filter 4, fertilising cylinder 5, rainer and drip irrigation appliance, the outlet of described water pump 1 connects self-cleaning filter 4 by water pipe
Water inlet, is provided with check-valves 2 and pressure gauge 3 according to water (flow) direction between described water pump 1 and self-cleaning filter 4, described
The outlet of self-cleaning filter 4 connects the water inlet of fertilising cylinder 5 by water pipe, and the outlet of described fertilising cylinder 5 passes through water pipe
The water inlet of connecting tee pipe joint, is provided with water flow table, tee pipe coupling in the water outlet pipeline of described fertilising cylinder 5
Outlet connect rainer, the inlet pipeline of rainer is provided with pressure-regulating valve 8 and tee pipe coupling, institute
The outlet stating tee pipe coupling connects the shower head 9 of each branch road in rainer；Another outlet of tee pipe coupling
Connect drip irrigation appliance, described drip irrigation appliance includes eps filter layer 7, electromagnetic valve 10, soil moisture sensor 12 and dropper band
11, the water inlet of described eps filter layer 7 connects the outlet of fertilising cylinder 5, and the outlet of eps filter layer 7 is connected by water pipe
Dropper band 11, is provided with pressure-regulating valve 8 and electromagnetic valve 10 according to water (flow) direction between described eps filter layer 7 and dropper band 11,
The side of described dropper band 11 is provided with soil moisture sensor 12, described soil moisture sensor 12 is connected with control
Device, described controller is with each electromagnetic valve 10 electricity in drip irrigation appliance in succession.
In this enforcement, shown in Fig. 2, evenly spaced in the cavity of described dropper band 11 be provided with fibers adsorption ring 17,
In drip irrigation zone, fibers adsorption ring 17 is set, can be with the microorganism in adsorption moisture, and fibers adsorption ring 17 can increase water
Mobility is it is ensured that the impurity in water will not rest on the bottom surface of drip irrigation zone 11；Described fibers adsorption ring 17 side according to current
Direction is provided with the water dropper 13 that hollow is in cylinder, and the outer surface of described water dropper 13 is provided with three inlet openings, and is entered by three
Water hole is fixedly connected on the periphery of dropper band 11, and the outer surface of described water dropper 13 is provided with capillary tube 14, in described water dropper 13
Hollow cavity in be provided with eps foam filter pearl filter layer 15, described eps foam filter pearl filter layer 15 is horizontally set at water dropper
13 inner chamber, employs the mode of three filtrations, is respectively: self-cleaning filter 4, eps mistake in the inlet pipeline of drip irrigation appliance
Filtering layer 7 and eps foam filter pearl filter layer 15, to ensure to enter the water quality requirement of water dropper, reduce the blocking of water dropper 13, improve and drip
13 service life.
For convenience of changing in water dropper 13, the hollow wall of dropper band described in the present embodiment 11 is provided with fixed plate 16,
Described fixed plate 16 is provided with fixing hole, and the inlet opening installation end of described water dropper 13 is provided with annular slot, described ring
Shape draw-in groove embeds and is installed in fixing hole.
In order to preferably cover comprehensively, farmland is implemented to irrigate, the drip irrigation appliance of the present invention is arranged at rainer can not
The region irrigated, using based on sprinkling irrigation, the irrigation method supplemented by drip irrigation, and be provided with electromagnetism in the pipeline of drip irrigation appliance
Data, when soil moisture sensor 12 detects a certain region and lacks moisture, can be passed by valve 10 and soil moisture sensor 12
It is handed to controller, electromagnetic valve 10 opened by controller, it is possible to achieve some region of irrigation, saved water resource.
The present invention adds compound potassium sulfate fertilizer in fertilising cylinder 5, and compound potassium sulfate fertilizer is subacidity fertilizer, is suitable for saline and alkaline
Apply on the ground, and have the good action in improvement salt-soda soil.
A kind of Yellow River irrigation secondary salinization of land water saving control salt irrigation rig that the present invention provides, has the amount of conserving water, control
The advantage that salt effect is good, irrigation efficiency is high, the farmland planting for Yellow River irrigation secondary salinization of land is significant.
Finally it is noted that above example only not limits technology described in the invention in order to the present invention to be described
Scheme；Therefore, although this specification with reference to each above-mentioned embodiment to present invention has been detailed description, this
Field it is to be appreciated by one skilled in the art that still the present invention can be modified or equivalent；And all are without departing from this
The technical scheme of spirit and scope of invention and its improvement, it all should be covered in scope of the presently claimed invention.
Claims (8)
1. a kind of Yellow River irrigation secondary salinization of land water saving control salt irrigation rig it is characterised in that: include water pump (1), self-cleaning
Filter (4), fertilising cylinder (5), rainer and drip irrigation appliance, the outlet of described water pump (1) connects self-cleaning by water pipe
The water inlet of filter (4), the outlet of described self-cleaning filter (4) connects the water inlet of fertilising cylinder (5) by water pipe, described
The outlet of fertilising cylinder (5) passes through the water inlet of water pipe connecting tee pipe joint, and an outlet of tee pipe coupling connects spray
Filling device, another outlet of tee pipe coupling connects drip irrigation appliance, and described drip irrigation appliance includes eps filter layer (7), electricity
Magnet valve (10), soil moisture sensor (12) and dropper band (11), the water inlet of described eps filter layer (7) connects fertilising cylinder
(5) outlet, the outlet of eps filter layer (7) connects dropper band by water pipe, in described eps filter layer (7) and dropper band
(11) between, water (flow) direction is provided with pressure-regulating valve (8) and electromagnetic valve (10), the side of described dropper band is provided with soil
Earth moisture transducer (12), described soil moisture sensor (12) is connected with controller, described controller and drip irrigation appliance
In electromagnetic valve (10) electricity in succession.
2. a kind of Yellow River irrigation according to claim 1 secondary salinization of land water saving control salt irrigation rig it is characterised in that:
Pressure-regulating valve (8) and tee pipe coupling, the water outlet of described tee pipe coupling are provided with the inlet pipeline of described rainer
Shower head (9) in mouth connection rainer.
3. a kind of Yellow River irrigation according to claim 2 secondary salinization of land water saving control salt irrigation rig it is characterised in that:
Evenly spaced in the cavity of described dropper band (11) it is provided with fibers adsorption ring (17), in the side of described fibers adsorption ring (17)
While being provided with, according to water (flow) direction, the water dropper (13) that hollow is in cylinder, the outer surface of described water dropper (13) is provided with inlet opening, and leads to
Cross the periphery that inlet opening is fixedly connected on dropper band (11), the outer surface of described water dropper (13) is provided with capillary tube (14),
It is provided with eps foam filter pearl filter layer (15) in the hollow cavity of described water dropper (13).
4. a kind of Yellow River irrigation according to claim 3 secondary salinization of land water saving control salt irrigation rig it is characterised in that: institute
The eps foam stated filters the inner chamber that pearl filter layer (15) is horizontally set at water dropper (13).
5. a kind of Yellow River irrigation according to claim 3 secondary salinization of land water saving control salt irrigation rig it is characterised in that: institute
Fixed plate (16) is provided with the hollow wall stating dropper band (11), described fixed plate (16) is provided with fixing hole, described
The inlet opening installation end of water dropper (13) is provided with annular slot, and described annular slot embeds and is installed in fixing hole.
6. a kind of Yellow River irrigation according to claim 3 secondary salinization of land water saving control salt irrigation rig it is characterised in that:
Between described water pump (1) and self-cleaning filter (4), water (flow) direction is provided with check-valves (2) and pressure gauge (3).
7. a kind of Yellow River irrigation according to claim 5 secondary salinization of land water saving control salt irrigation rig it is characterised in that:
It is provided with water flow table (6) in the water outlet pipeline of described fertilising cylinder (5).
8. a kind of Yellow River irrigation secondary salinization of land water saving control salt irrigation rig according to claim 1-7 any one, its
It is characterised by: drip irrigation appliance is arranged at the region that rainer can not be irrigated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610769586.7A CN106359003A (en) | 2016-08-30 | 2016-08-30 | Water-saving and salt controlling irrigation device of secondary saline and alkaline land of irrigation area of Yellow River |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610769586.7A CN106359003A (en) | 2016-08-30 | 2016-08-30 | Water-saving and salt controlling irrigation device of secondary saline and alkaline land of irrigation area of Yellow River |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106359003A true CN106359003A (en) | 2017-02-01 |
Family
ID=57900700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610769586.7A Pending CN106359003A (en) | 2016-08-30 | 2016-08-30 | Water-saving and salt controlling irrigation device of secondary saline and alkaline land of irrigation area of Yellow River |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106359003A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109287441A (en) * | 2018-10-31 | 2019-02-01 | 昆明理工大学 | A kind of variable-flow irrigation system for pressing salt |
| CN110063243A (en) * | 2019-05-22 | 2019-07-30 | 河南灵捷水利勘测设计研究有限公司 | A kind of irrigation device |
| CN110366925A (en) * | 2019-08-15 | 2019-10-25 | 山东胜伟盐碱地科技有限公司 | A kind of water-fertilizer integrated intelligent trace irrigation system |
| CN115316239A (en) * | 2022-09-02 | 2022-11-11 | 宁夏大学 | Irrigation and drainage cooperative water-saving accurate salt control system |
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| CN103828696A (en) * | 2014-03-27 | 2014-06-04 | 中国农业大学 | Solar pumped storage intelligent dripping irrigation system |
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| CN204733698U (en) * | 2015-01-09 | 2015-11-04 | 湖南一建园林景观有限公司 | Drip irrigation irrigation system who combines with sprinkling irrigation |
| US9301442B1 (en) * | 2015-09-01 | 2016-04-05 | Adel Abdulmuhsen Al-Wasis | Irrigation system |
| CN205337091U (en) * | 2016-01-29 | 2016-06-29 | 张嘉强 | Prevent obstructed drip irrigation equipment |
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2016
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| CN102160520A (en) * | 2010-12-23 | 2011-08-24 | 南京农业大学 | Crop evapotranspiration model-based intelligent drop irrigation control system and method thereof |
| CN103828696A (en) * | 2014-03-27 | 2014-06-04 | 中国农业大学 | Solar pumped storage intelligent dripping irrigation system |
| CN104380902A (en) * | 2014-12-17 | 2015-03-04 | 天津市津水工程新技术开发公司 | Dripping arrow irrigation automatic control system, manufacturing method of dripping arrow irrigation automatic control system and dripping arrow irrigation method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109287441A (en) * | 2018-10-31 | 2019-02-01 | 昆明理工大学 | A kind of variable-flow irrigation system for pressing salt |
| CN109287441B (en) * | 2018-10-31 | 2023-08-22 | 福建省恒鼎建筑工程有限公司 | Variable flow irrigation system capable of pressing salt |
| CN110063243A (en) * | 2019-05-22 | 2019-07-30 | 河南灵捷水利勘测设计研究有限公司 | A kind of irrigation device |
| CN110366925A (en) * | 2019-08-15 | 2019-10-25 | 山东胜伟盐碱地科技有限公司 | A kind of water-fertilizer integrated intelligent trace irrigation system |
| CN115316239A (en) * | 2022-09-02 | 2022-11-11 | 宁夏大学 | Irrigation and drainage cooperative water-saving accurate salt control system |
| CN115316239B (en) * | 2022-09-02 | 2023-08-11 | 宁夏大学 | Irrigation and drainage cooperated water-saving accurate salt control system |
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Application publication date: 20170201 |