CN105794597B - It is a kind of that layering constant-pressure infiltration irrigation system and method are carried out according to root system of plant distribution - Google Patents

It is a kind of that layering constant-pressure infiltration irrigation system and method are carried out according to root system of plant distribution Download PDF

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Publication number
CN105794597B
CN105794597B CN201610347402.8A CN201610347402A CN105794597B CN 105794597 B CN105794597 B CN 105794597B CN 201610347402 A CN201610347402 A CN 201610347402A CN 105794597 B CN105794597 B CN 105794597B
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infiltrating irrigation
pressure
plant
irrigation
humidity
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CN105794597A (en
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刘鹏飞
胡永光
江丰
阿什拉夫·穆哈默德
王升
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Jiangsu University
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Jiangsu University
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00Watering gardens, fields, sports grounds or the like
    • A01G25/06Watering arrangements making use of perforated pipe-lines located in the soil
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00Watering gardens, fields, sports grounds or the like
    • A01G25/16Control of watering
    • A01G25/165Cyclic operations, timing systems, timing valves, impulse operations
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00Watering gardens, fields, sports grounds or the like
    • A01G25/16Control of watering
    • A01G25/167Control by humidity of the soil itself or of devices simulating soil or of the atmosphere; Soil humidity sensors

Abstract

Layering constant-pressure infiltration irrigation system and method are carried out according to root system of plant distribution the invention discloses a kind of, belong to agricultural water-saving irrigation and automation field.The infiltrating irrigation system that infiltrating irrigation pipe establishes spatial distribution with this is buried in influence of the present invention in view of the humidity inhomogeneities of topsoil and deep soil to plant growth at topsoil and deep soil appropriate depth.According to the critical arid humidity value of soil at topsoil and deep soil as setting value, the soil moisture at topsoil and deep soil is compared to the unlatching of control water pump and solenoid valve with setting value.The opportunity closed using specific location soil moisture content transformation situation as solenoid valve, the revolving speed by controlling water pump are carried out Isobarically Control, accomplish the automatic of irrigation and be precisely controlled.Fertilizer necessary to plant is added in water and is directly taken at root system of plant by infiltrating irrigation pipe by the present invention, is directly absorbed by plant, and pollution of the fertilizer to environment and underground water, the utilization rate and water-saving rate of the fertilizer greatly improved are effectively prevented.

Description

It is a kind of that layering constant-pressure infiltration irrigation system and method are carried out according to root system of plant distribution
Technical field
The present invention relates to agricultural water-saving irrigation and automation field, in particular to a kind of be distributed according to root system of plant carries out It is layered the System and method for of constant pressure infiltrating irrigation.
Background technique
Current irrigation method widely used in agricultural production is still flood irrigation, although flood irrigation effective solution is planted The problem of object arid, but the soil profile flowing of large quantity of moisture from top to down, not only break up the soil point near root system of plant Fertilizer can also be washed away into deep subsoil to polluted underground water, greatly waste water resource by cloth.Therefore on this basis, it pushes away Filtration irrigation method has been gone out, infiltrating irrigation is a kind of underground micro-irrigation form, is referred under low hydraulics, and irrigation water is made (containing soluble nutriment) By setting up or being buried in the micropore on the infiltration tube wall within the scope of each plant of farm-forestry crop root system, seeped from inside to outside in sweating shape Out, crop root layer surrounding soil is moistened in a manner of infiltration to drip, i.e., directly supply in due course, appropriately to each plant of farm-forestry crop root system Water, keeping a kind of water-saving and yield-increasing irrigation technique method.
Soil can be divided into topsoil and deep soil, after irrigation, due to the influence of solar radiation, topsoil Moisture evaporation is very fast, therefore the humidity of topsoil can be lower than the humidity of deep soil, when the humidity of deep soil meets plant When growth conditions, the humidity of topsoil is lower than the growth conditions of plant sometimes.And it can be a large amount of when the root growth of plant The moisture in deep soil is absorbed, the humidity of deep soil can be lower than the humidity of topsoil without being able to satisfy root system of plant at this time Growth conditions.
The Chinese patent of application number 201020565352.9 discloses infiltrating irrigation system for navel orange orchard, and mentioning in the patent will seep Water pipe is embedded in the every row fruit tree in navel orange orchard and medially descends the depths 35cm, and the measurement of the depths 30cm is held in navel orange tree crown drip soil Water should pour water in time when water-holding capacity is below 40%, stop irrigating when up to 80%.It is navel orange fruit that infiltrating irrigation pipe is applied in this patent Moisture needed for tree provides growth, but do not consider topsoil arid to fruit tree in view of whether needing to be layered irrigation It influences, while also not in view of influence of the pressure change to infiltrating irrigation in water pipe.
Summary of the invention
Layering constant-pressure infiltration irrigation system and method are carried out according to root system of plant distribution the purpose of the present invention is to provide a kind of, with Influence in view of surface layer arid to phenomenon is irrigated realizes that layering is irrigated, improves and irrigate uniformity and water-saving rate.
For the technical problem more than solving, the specific technical solution that the present invention uses is as follows:
It is a kind of that layering constant-pressure infiltration irrigation system is carried out according to root system of plant distribution, characterized by comprising: filter screen (1), master Manage (2), water pump (3), non-return valve (4), regulating valve (5), Development of Venturi Fertilizer Applicator (6), cascade filter (7), well strainer (8), flowmeter (9), pressure sensor (10), fertilizer spreading tank (11), main pipe (12), No. 1 solenoid valve (13), No. 2 solenoid valves (14), No. 1 infiltrating irrigation pipe (15), No. 2 infiltrating irrigation pipes (16), No. 1 humidity sensor (17), No. 2 humidity sensors (18), No. 3 humidity sensors (19), mulch (20), exhaust valve (21), controller (22), frequency converter (23);Filter screen is sequentially connected on the supervisor (2) (1), water pump (3), non-return valve (4), regulating valve (5), Development of Venturi Fertilizer Applicator (6), cascade filter (7), well strainer (8), Flowmeter (9), pressure sensor (10), fertilizer spreading tank (11);Each No. 1 infiltrating irrigation pipe (15) is separately connected on the main pipe (12) With No. 2 infiltrating irrigation pipes (16);No. 1 solenoid valve (13), exhaust valve (21) are sequentially connected on No. 1 infiltrating irrigation pipe (15);Described 2 No. 2 solenoid valves (14), exhaust valve (21) are sequentially connected on number infiltrating irrigation pipe (16).
No. 1 infiltrating irrigation pipe (15) is located at ground flora middle position, is located at earth's surface or less 5-10cm, and earth's surface is laid with ground Film (20);No. 2 infiltrating irrigation pipes (16) are located at immediately below No. 1 infiltrating irrigation pipe (15) at 20-25cm.
The distance between two neighboring described No. 1 infiltrating irrigation pipe (15) is equal to the line-spacing of plant.
No. 1 humidity sensor (17) is located at earth's surface or less 10cm, and No. 2 humidity sensors (18) are located at earth's surface or less At 15cm, No. 3 humidity sensors (19) are located at earth's surface or less 20cm.
No. 1 humidity sensor (17), No. 2 humidity sensors (18), No. 3 humidity sensors (19) and pressure sensor (10) It is connected with controller (22) input terminal;Input terminal and the control of No. 1 solenoid valve (13), No. 2 solenoid valves (14) and frequency converter (23) The output end of device (22) is connected;Water pump (3) connects the output end of frequency converter (23).
It is a kind of that layering constant pressure filtration irrigation method is carried out according to root system of plant distribution, it is characterised in that: specifically includes the following steps:
Step 1, in controller (22) input pressure setting value and each depth soil moisture setting value;
Step 2, when No. 1 humidity sensor (17) detects the soil moisture of the depth lower than setting value, water is opened Pump (3) and No. 1 solenoid valve (13);When No. 3 humidity sensors (19) detect the soil moisture of the depth lower than setting value When, open water pump (3) and No. 2 solenoid valves (14);
Step 3, it after the infiltrating irrigation system operation, is set when pressure sensor (10) detects that the pressure in supervisor (2) is lower than It when definite value, opens frequency converter (23), increases pressure: when detecting that pressure is higher than setting value, opening frequency converter (23), reduce pressure Power;
Step 4, when No. 2 humidity sensors (18) detect that soil moisture changes, No. 1 solenoid valve (13) is closed; When No. 3 humidity sensors (19) detect that soil moisture is higher than setting value, No. 2 solenoid valves (14) are closed;
Step 5, after No. 1 solenoid valve (13) and No. 2 solenoid valves (14) are turned off, infiltrating irrigation terminates, and switch off the pump (3), protects Controller (22) unlatching is held, next infiltrating irrigation period is waited.
The process of work of the invention.The present invention utilizes the feelings opened and closed the case where soil moisture as solenoid valve Condition, using pressure sensor detection pressure to control system constant-pressure operation.Present invention input system in controller (22) The humidity set point of rated pressure, the humidity set point of topsoil and deep soil, when No. 1 humidity sensor (17) detects When the soil moisture of the depth is lower than setting value, water pump (2) and No. 1 solenoid valve (13) are opened, when No. 3 humidity sensors (19) When detecting the soil moisture of the depth lower than setting value, No. 21 solenoid valves (14) are opened.After system operation, pressure sensor (10) pressure in detection system pipeline is opened frequency converter (23) when pressure is lower than rated pressure, increases turning for water pump (3) Speed increases the pressure of system;It when pressure is higher than rated pressure, opens frequency converter (23), reduces the revolving speed of water pump (3), reduce The pressure of system;Guarantee the constant-pressure operation of system with this.When No. 2 humidity sensors (18) detect that soil moisture changes When, close No. 1 solenoid valve (13);When No. 3 humidity sensors (19) detect that soil moisture is higher than setting value, No. 2 electricity are closed Magnet valve (14);When No. 1 solenoid valve (13) and No. 2 solenoid valves (14) are turned off, switch off the pump (3), terminates infiltrating irrigation, waits next The secondary watering period.
The present invention has beneficial effect.The present invention is in view of the humidity inhomogeneities of topsoil and deep soil is to plant The irrigation of plant is divided into surface layer irrigation and deep layer is irrigated by the influence of growth, is irrigated in solution growing process by layering Influence of the humidity inhomogeneities to plant growth.The present invention is sentenced by the real-time monitoring to topsoil and deep soil humidity The situation of arid, the opening and closing of solenoid valve are controlled with this at disconnected topsoil and deep soil, are that the layering of plant fills It irrigates and provides reasonable solution, by the use of pressure sensor and frequency converter, guarantee the constant-pressure operation of system, improve It irrigates uniformity and water-saving rate, ensure that plant is real-time, suitable irrigation.
Detailed description of the invention
Fig. 1 is infiltrating irrigation system of the present invention composition and structural schematic diagram.
In figure: 1. strainers, 2. supervisors, 3. water pumps, 4. non-return valves, 5. regulating valves, 6. Development of Venturi Fertilizer Applicator, 7. Cascade filter, 8. well strainers, 9. flowmeters, 10. pressure sensors, 11. fertilizer spreading tanks, 12. main pipes, 13. No. 1 Solenoid valve, 14. No. 2 solenoid valves, 15. No. 1 infiltrating irrigation pipes, 16. No. 2 infiltrating irrigation pipes, 17. No. 1 humidity sensors, 18. No. 2 it is wet Spend sensor, 19. No. 3 humidity sensors, 20. mulches, 21. exhaust valves, 22. controllers, 23. frequency converters.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of this method is described in further detail.Implement below Example is not limited to the range of this method for illustrating this method.
System the Nomenclature Composition and Structure of Complexes of the invention is as shown in Figure 1, including filter screen 1, supervisor 2, water pump 3, non-return valve 4, adjusting Valve 5, Development of Venturi Fertilizer Applicator 6, cascade filter 7, well strainer 8, flowmeter 9, pressure sensor 10, fertilizer spreading tank 11, main pipe 12, No. 1 humidity of humidity sensor 17,2 of infiltrating irrigation pipe 16,1 of infiltrating irrigation pipe 15,2 of solenoid valve 14,1 of solenoid valve 13,2 passes Sensor 18, No. 3 humidity sensors 19, mulch 20, exhaust valve 21, controller 22, frequency converters 23;Filtering is sequentially connected on supervisor 2 Net 1, water pump 3, non-return valve 4, regulating valve 5, Development of Venturi Fertilizer Applicator 6, cascade filter 7, well strainer 8, flowmeter 9, pressure Sensor 10, fertilizer spreading tank 11;Each No. 1 infiltrating irrigation pipe 15 and No. 2 infiltrating irrigation pipe 16 is separately connected on main pipe 12;On No. 1 infiltrating irrigation pipe 15 It is sequentially connected No. 1 solenoid valve 13, exhaust valve 21;No. 2 solenoid valves 14, exhaust valve 21 are sequentially connected on No. 2 infiltrating irrigation pipes 16.No. 1 infiltration It fills pipe 15 and is located at ground flora middle position, be located at earth's surface or less 5-10cm, earth's surface laying plastic 20;No. 2 infiltrating irrigation pipe 16 At No. 1 15 underface 20-25cm of infiltrating irrigation pipe.The distance between each No. 1 infiltrating irrigation pipe 15 is equal to the line-spacing of plant.No. 1 humidity passes Sensor 17 is located at earth's surface or less 10cm, and No. 2 humidity sensors 18 are located at earth's surface or less 15cm, and No. 3 humidity sensor 19 Below the earth's surface at 20cm.No. 1 humidity sensor 17,2 humidity sensor 18,3 humidity sensor 19 and pressure sensor 10 are connected with 22 input terminal of controller;The input terminal of 13, No. 2 solenoid valves 14 of No. 1 solenoid valve and frequency converter 23 and controller 22 Output end is connected;The output end of the connection frequency converter 23 of water pump 3.
In this example, No. 1 infiltrating irrigation pipe 15 and No. 2 infiltrating irrigation pipe 16 is all made of Quality type infiltrating irrigation pipe, No. 1 humidity sensor 17,2 The model of number humidity sensor 18 and No. 3 humidity sensor 19 is CS616, the model QBE2002- of pressure sensor 10 P16, mulch 20 are clear PE film.
Infiltrating irrigation regional soil be loam clay, test plant be Anji white tea, the age of tree about 7 years.Test the tea root measured Depth is 45cm.The course of work of lower infiltrating irrigation is described further below.
Step 1: the input pressure setting value 0.06Mpa in controller 22, the soil moisture inputted at 10cm and 20cm is set Definite value 15%, 25%.
Step 2: opening water pump 3 and 1 when No. 1 humidity sensor 17 detects the soil moisture at 10cm lower than 15% Number solenoid valve 13;When No. 3 humidity sensors 19 detect the soil moisture at 20cm lower than 15%, No. 2 solenoid valves 14 are opened.
Step 3: when pressure sensor detects pressure lower than 0.06Mpa, opening frequency converter 23 after system operation, increasing Plus-pressure;When detecting that pressure is higher than 0.06Mpa, frequency converter 23 is opened, reduces pressure.
Step 4: closing No. 1 solenoid valve 13 when No. 2 humidity sensors 18 detect that soil moisture changes;When 3 When number humidity sensor 19 detects that soil moisture is higher than 25%, No. 2 solenoid valves 14 are closed.
Step 5: infiltrating irrigation terminates after No. 1 solenoid valve 13 and No. 2 solenoid valve 14 is turned off, 3 are switched off the pump, keep control Device 22 is opened, and next infiltrating irrigation period is waited.
Embodiment of above is merely to illustrate this method, and is not the limitation to this method, in relation to the common of technical field Technical staff can also make a variety of changes and modification in the case where not departing from the spirit and scope of this method, therefore all Equivalent technical solution also belongs to the scope of this method, and the scope of patent protection of this method should be defined by the claims.

Claims (3)

1. a kind of carry out layering constant-pressure infiltration irrigation system according to root system of plant distribution, characterized by comprising: filter screen (1), supervisor (2), water pump (3), non-return valve (4), regulating valve (5), Development of Venturi Fertilizer Applicator (6), cascade filter (7), well strainer (8), Flowmeter (9), pressure sensor (10), fertilizer spreading tank (11), main pipe (12), No. 1 solenoid valve (13), No. 2 solenoid valves (14), No. 1 Infiltrating irrigation pipe (15), No. 2 infiltrating irrigation pipes (16), No. 1 humidity sensor (17), No. 2 humidity sensors (18), No. 3 humidity sensors (19), mulch (20), exhaust valve (21), controller (22), frequency converter (23);
Filter screen (1), water pump (3), non-return valve (4), regulating valve (5), Development of Venturi Fertilizer Applicator are sequentially connected on the supervisor (2) (6), cascade filter (7), well strainer (8), flowmeter (9), pressure sensor (10), fertilizer spreading tank (11);
Each No. 1 infiltrating irrigation pipe (15) and No. 2 infiltrating irrigation pipes (16), No. 1 infiltrating irrigation pipe are separately connected on the main pipe (12) (15) it is located at ground flora middle position, is located at earth's surface or less 5-10cm, earth's surface laying plastic, two neighboring No. 1 infiltration Fill the line-spacing that the distance between pipe (15) is equal to plant;No. 2 infiltrating irrigation pipes (16) are located at 20- immediately below No. 1 infiltrating irrigation pipe (15) At 25cm;
No. 1 solenoid valve (13), exhaust valve (21) are sequentially connected on No. 1 infiltrating irrigation pipe (15);
No. 2 solenoid valves (14), exhaust valve (21) are sequentially connected on No. 2 infiltrating irrigation pipes (16);
No. 1 humidity sensor (17) is located at earth's surface or less 10cm, and No. 2 humidity sensors (18) are located at earth's surface or less 15cm Place, No. 3 humidity sensors (19) are located at earth's surface or less 20cm.
2. a kind of be distributed according to root system of plant according to claim 1 carries out layering constant-pressure infiltration irrigation system, it is characterised in that: No. 1 humidity sensor (17), No. 2 humidity sensors (18), No. 3 humidity sensors (19) and pressure sensor (10) and controller (22) input terminal is connected;The input terminal of No. 1 solenoid valve (13), No. 2 solenoid valves (14) and frequency converter (23) and controller (22) Output end is connected;Water pump (3) connects the output end of frequency converter (23).
3. it is a kind of using it is described in claim 1 according to root system of plant distribution carry out layering constant-pressure infiltration irrigation system plant is divided The method of layer constant pressure infiltrating irrigation, it is characterised in that: specifically includes the following steps:
Step 1, in controller (22) input pressure setting value and each depth soil moisture setting value;
Step 2, it when No. 1 humidity sensor (17) detects the soil moisture of the depth lower than setting value, opens water pump (3) With No. 1 solenoid valve (13);When No. 3 humidity sensors (19) detect the soil moisture of the depth lower than setting value, open Water pump (3) and No. 2 solenoid valves (14);
Step 3, after the infiltrating irrigation system operation, when pressure sensor (10) detects the pressure in supervisor (2) lower than setting value When, it opens frequency converter (23), increases pressure;It when detecting that pressure is higher than setting value, opens frequency converter (23), reduces pressure;
Step 4, when No. 2 humidity sensors (18) detect that soil moisture changes, No. 1 solenoid valve (13) is closed;When No. 3 When humidity sensor (19) detects that soil moisture is higher than setting value, No. 2 solenoid valves (14) are closed;
Step 5, after No. 1 solenoid valve (13) and No. 2 solenoid valves (14) are turned off, infiltrating irrigation terminates, and switch off the pump (3), keeps control Device (22) processed is opened, and next infiltrating irrigation period is waited.
CN201610347402.8A 2016-05-24 2016-05-24 It is a kind of that layering constant-pressure infiltration irrigation system and method are carried out according to root system of plant distribution Active CN105794597B (en)

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