CN106386412A - A wide row spacing alternate partial root-zone irrigation automatic control method - Google Patents
A wide row spacing alternate partial root-zone irrigation automatic control method Download PDFInfo
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- 230000002262 irrigation Effects 0.000 title claims abstract description 48
- 238000003973 irrigation Methods 0.000 title claims abstract description 48
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- 239000002689 soil Substances 0.000 claims abstract description 138
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- 239000003621 irrigation water Substances 0.000 description 4
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- 244000037666 field crops Species 0.000 description 1
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- 235000015097 nutrients Nutrition 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/16—Control of watering
- A01G25/167—Control by humidity of the soil itself or of devices simulating soil or of the atmosphere; Soil humidity sensors
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Abstract
The invention provides a wide row spacing alternate partial root-zone irrigation automatic control method. A set of water delivery laterals with electromagnetic valves are arranged on each of the two sides of a crop row; when any set of water delivery laterals delivers water, the humidity of soil under the other set of water delivery laterals is not influenced; then two soil moisture sensor located on each of the two sides of the crop row are arranged for each set of electromagnetic valves; a central intelligent controller controls the two sets of water delivery laterals to irrigate the two sides of the crop row separately in turn. The horizontal wetness radiuses of the laterals on the two sides of the crop row do not influence each other; based on the mutual relationship of the soil humidities on the two sides of the crop row and the mutual effect relationship between the same and the four soil moisture sensors and the two sets of electromagnetic valves, highly-efficient and highly-automatic wide row spacing alternate partial root-zone irrigation can be realized by constructing a corresponding automatic control system.
Description
Technical field
The present invention relates to water-saving irrigation technique field, particularly to a kind of wide row away from root-divided alternative irrigation technology.
Background technology
With the worsening shortages of freshwater resources and being continuously increased of water requirement, it is real that Developing Water-saving Agriculture has become countries in the world
The important countermeasure of sustainable development under the conditions of existing Water Resources Restriction.China water resource occupancy volume per person only has 2300 cubic metres, about
For the 1/4 of world's per capita share, come the 121st in the world, be one of 13 poor-water countries in the world, agricultural is to use simultaneously again
Water rich and influential family, agricultural irrigation water amount accounts for the 65% about of national total supply.However, water resource is not enough and serious in agricultural production
Waste, the low contradiction of utilization ratio are very prominent, and Developing Water-saving Agriculture is more urgent.In view of the irrigation and water conservancy of current China puts into water
Flat restriction, improving surface irrigation will be the main flow of water-saving irrigation within considerable time, but for water saving potential, biological
Water saving is research emphasis and the focus of following water-saving agriculture, therefore integrates ground and improves the comprehensive water saving with Biological Water Saving in Agriculture
Technology is the primary study direction of China's water-saving agriculture.
Early in the 60-70 age in 20th century, foreign scholar has started to attempt irrigating and every ditch using interlacing on some crops
Irrigation technique, has carried out systematic study to Crop Water Use Efficiency, evapotranspiration characteristic under these technology.1996, Kang Shaozhong
On the basis of potted plant, plot experiment, land for growing field crops application test indoors, system proposes crop root subregion alternate irrigation first
Technology, illustrates its concept, theoretical basiss and implementation.Kang Shao loyalty in 1997 etc. proposes and is suitable to fruit tree partial root zone and replaces
The four kinds of application models irrigated, that is, alternate furrow irrigation system, portable alternatively drip irrigating system, ring-type automatic control type alternately drip
Fill system and alternate infiltrating irrigation system.Pour water reality in conjunction with China orchard, some scholars also proposed development and replace hole irrigation technology.Separately
Outward, for thin planting class field crop, also can achieve the friendship between different root-zones on the premise of integrated application ridge furrow irrigation technology
For water supply.
Controlled root divided alternative irrigation as a kind of brand-new farmland water-saving new approaches and new technique, still locate at present by its research
In initial stage, although it have been demonstrated that have in theory with implement on probability and huge water saving potential, but specifically real
Also there are some problems during applying.Such as, the increase of the institution such as water-supply pipeline, its cost may be beyond routine
Irrigate, so that its economic benefit decreases;Consider that the synthesis of soil water movement process, Root Distribution situation etc. replaces to fill
The quantification irrigate and operableization level are also relatively low;The automatization level of root-divided alternative irrigation control system is also relatively low, cost ratio
Higher, structure is complex, is unfavorable for large-area applications and popularization.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of wide row away from root-divided alternative irrigation autocontrol method, makes crop
The horizontal wetted radius of row both sides hollow billet mutually no affect, the soil moisture mutual relation according to crop row both sides and its with four
Soil moisture sensor and the interaction relationship of two groups of electromagnetic valves, by realizing efficiently to the structure of corresponding automatic control system
Rate and supermatic wide row is away from root-divided alternative irrigation.
For solving above-mentioned technical problem, the technical solution used in the present invention is as follows.
A kind of wide row, away from root-divided alternative irrigation autocontrol method, is respectively provided with one group in crop row both sides and carries electromagnetic valve
Water delivery hollow billet, during arbitrary group of water delivery hollow billet water delivery all not on below another group of water delivery hollow billet soil moisture produce impact, so
It is that two soil moisture sensors being located at crop row both sides respectively prepared by every group of electromagnetic valve afterwards, then with following three groups of conditions be
Basis:1. the soil moisture content of synchronization agricultural land soil any two points is impossible to just the same, 2. arbitrary group of water delivery hollow billet
All on the soil moisture generation impact below another group of water delivery hollow billet during water delivery, 3. the soil moisture of crop row both sides is mutually closed
System and its interaction relationship with four soil moisture sensors and two groups of electromagnetic valves, by the control of central intelligent controller
Realize two groups of water delivery hollow billets to be irrigated to crop row both sides successively respectively, that is, be automatically obtained B side when water delivery hollow billet in A side is irrigated defeated
Water hollow billet is closed, and reaches both sides water delivery hollow billet after certain soil moisture requires and is turned off, when next time irrigates, water delivery hollow billet in B side is irrigated
And water delivery hollow billet in A side is closed, reach both sides water delivery hollow billet after certain soil moisture requires and be turned off, Automatic Cycle.
As a preferred technical solution of the present invention:
Ith, it is respectively provided with one group of water delivery hollow billet carrying electromagnetic valve in crop row both sides, two groups of electromagnetic valves and water delivery hollow billet are marked respectively
It is designated as A, B, during arbitrary group of water delivery hollow billet water delivery, all impact is not produced on the soil moisture below another group of water delivery hollow billet;And every group
Bury two soil moisture sensors below water delivery hollow billet respectively, total four soil moisture sensors are respectively labeled as 1,2,3,
4;
IIth, one group of central intelligent controller is set, is provided with power supply output channel, four road voltage signal input channel labellings
For 1,2,3,4, four road alarm relay output channels are labeled as 1,2,3,4;
III and then soil moisture sensor 1,3 is set in below water delivery hollow billet A, corresponding soil moisture sensor 2,4 is set
Below water delivery hollow billet B;Meanwhile by four soil moisture sensors 1,2,3,4, four tunnels with central intelligent controller respectively
Voltage signal input channel 1,2,3,4 is corresponding to be connected, central intelligent controller receive respectively four soil moisture sensors according to
Soil moisture state sends the 4 road voltage signals of returning, then by this 4 road voltage signal respectively with set in advance with soil field
Between 4 related tunnel alarm voltage values of water-holding capacity be compared, central intelligent controller controls four tunnels to continue according to comparative result respectively
The folding of electrical equipment warning output passage;Then particularly important, by 1,2 and electromagnetic valve in four road alarm relay output channels
A concatenates, and by 3 in alarm relay output channel, 4 concatenates with electromagnetic valve B;
IVth, last, set that the corresponding alarming value two of four soil moisture sensors is high two low, two below same group of water delivery hollow billet
Prop up the corresponding alarming value of soil moisture sensor one high and one low;
Realize two groups of water delivery hollow billets by above-mentioned setting to be irrigated to crop row both sides successively respectively, that is, be automatically obtained A side defeated
When water hollow billet is irrigated, water delivery hollow billet in B side is closed, and reaches both sides water delivery hollow billet after certain soil moisture requires and is turned off, next time irrigates
When B side water delivery hollow billet irrigate and water delivery hollow billet in A side is closed, reaching both sides water delivery hollow billet after certain soil moisture requires is turned off,
Automatic Cycle.
As in a preferred technical solution of the present invention, step III, described central intelligent controller is by direct current DC24v electricity
Source powers, and power supply output channel thereon is connected with described four soil moisture sensors and provides DC12v power supply for the latter.
As in a preferred technical solution of the present invention, step IV, set four soil moisture sensors 1,2,3,4 right
The soil moisture content low alarm setting value answered is followed successively by 60%, 80%, 80%, the 60% of field capacity;When soil moisture sensor
When real output value is less than described preset value, central intelligent controller controls corresponding alarm relay output channel closure, when
When all alarm relay output channels being connected with a certain electromagnetic valve are all closed, electromagnetic valve is opened and is irrigated;Otherwise electromagnetism
Valve is closed all the time.
As a preferred technical solution of the present invention, described water delivery hollow billet is arranged on pressure water conveyer pipeline, has pressure defeated
Water lines include supervisor and some arms, are respectively arranged with valve on supervisor and arm.
As a preferred technical solution of the present invention, two groups of water delivery hollow billets of crop row both sides are arranged on together by bypass
Article one, on arm, and in the stem of water delivery hollow billet, electromagnetic valve is installed respectively,
As a preferred technical solution of the present invention, two groups of water delivery hollow billets of crop row both sides be separately mounted to two parallel
On arm, and the stem in arm installs electromagnetic valve.
As a preferred technical solution of the present invention, described arm adopts the PE pipeline of Ф 50mm, described water delivery hollow billet
Using the PE drip irrigation zone of Ф 20mm, dripper spacing is 30cm, and horizontal wetted radius are 30cm, two groups of water delivery hairs of crop row both sides
Tube pitch be 100cm it is ensured that wherein side water delivery capillary watering when will not cause the increase of opposite side soil moisture content.
As a preferred technical solution of the present invention, described soil moisture sensor be voltage sensor, buried depth in
Crop root layer, it works under direct current DC12v power supply condition of power supply, and it is straight that the size according to soil moisture content exports a 0-5v
Flow voltage signal, the relation of soil moisture content Q voltage signal V is:Q=V/5.
As a preferred technical solution of the present invention, described electromagnetic valve is normally closed solenoid valve, powers as direct current
DC12v, energising is opened, power-off is closed.
Have the beneficial effects that using produced by technique scheme:
The present invention makes the horizontal wetted radius of crop row both sides hollow billet no influence each other, according to the soil moisture phase of crop row both sides
Mutual relation and its interaction relationship with four soil moisture sensors and two groups of electromagnetic valves, by accordingly automatically controlling being
The structure of system achieves high efficiency and supermatic root-divided alternative irrigation.
Specifically, the present invention is set and system constructing by simply and cleverly principle, with " 1. synchronization agricultural land soil
The soil moisture content of any two points is impossible to just the same;2. all not to another group of water delivery hair during arbitrary group of water delivery hollow billet water delivery
Soil moisture below pipe produces impact;3. the soil moisture mutual relation of crop row both sides and its sense with four soil moistures
Based on this 3 points of device and the interaction relationship of two groups of electromagnetic valves ", with foolproof several groups of sensors, electromagnetic valves
And simple controller, just efficient and supermatic achieve two groups of water delivery hollow billets and filled to crop row both sides successively respectively
Irrigate, when that is, water delivery hollow billet in A side is irrigated, water delivery hollow billet in B side is closed, reach both sides water delivery hollow billet after certain soil moisture requires and all close
Close, when next time irrigates, water delivery hollow billet in B side is irrigated and the closing of A side water delivery hollow billet, reach both sides water delivery after certain soil moisture requires
Hollow billet is turned off, Automatic Cycle.
Present system is provided with three core points:1. soil moisture sensor 1,3 is set in below water delivery hollow billet A, right
Soil moisture sensor 2,4 should be set in below water delivery hollow billet B;2. four soil moisture sensors 1,2,3,4 respectively with
The four road voltage signal input channel 1,2,3,4 of centre intelligent controller is corresponding to be connected, and four road alarm relay outputs therein are logical
In road 1,2 are connected with electromagnetic valve A, and 3,4 are connected with electromagnetic valve B;3. four soil moisture sensor corresponding alarming value two height
Two is low, and the corresponding alarming value of two soil moisture sensors below same group of water delivery hollow billet is one high and one low to be see below
Embodiment 3, the automatization minute root irrigation technique effect of the present invention has been reached in the interaction of exactly above-mentioned 3 points of settings.
In addition, the method for the present invention is also integrated with a point root water-saving irrigation technique, the soil of crop root mobile layer is kept to exist
Level(Vertically)Certain region of section is dried, and makes root system in level simultaneously(Vertically)The arid region of section is alternately present, and begins
A part for crop root is kept to be grown in the soil environment being dried or being more dried eventually, such control effect has high
Water saving and effect of increasing production;This is because, first, the crop root being in dry section can produce water stress signal transmission to leaf
Pore, thus effectively adjust leaf stoma closing, controlling rising, and the crop root being in humid region absorbs moisture from soil,
To meet the need of the minimum life of crop, within making to be maintained at critical limit to the injury of crop;Secondly, during root-divided alternative irrigation
Upper soll layer is always intermittent to be in dry section, the invalid evaporation loss between so both can having reduced, can improve soil again
Breathability, promotes crop root compensatory growth, strengthens the function of root system, improves the utilization rate to soil moisture, nutrient for the root system.
Brief description
Fig. 1 is the schematic diagram of one specific embodiment of the present invention, and wherein two groups of hollow billets of A, B are arranged on same arm
On, and in hollow billet stem, electromagnetic valve is installed.
Fig. 2 is the schematic diagram of another specific embodiment of the present invention, and wherein two groups of hollow billets of A, B are separately mounted to two parallel
Arm on, and arm stem install electromagnetic valve.
In figure:Central intelligent controller(1), arm(2), water delivery hollow billet(3), electromagnetic valve(4), soil moisture sensor
(5).
Specific embodiment
The following is the embodiment that inventor provides, it should be noted that these embodiments are the present invention preferably example,
The present invention is not limited to these embodiments, and those skilled in the art is according to scheme disclosed by the invention, special to technology therein
Levy made equivalence replacement, interpolation, belong to protection scope of the present invention.
Embodiment 1, plumbing system
Arm adopts the PE pipeline of Ф 50mm, and hollow billet adopts the PE drip irrigation zone of Ф 20mm, and dripper spacing is 30cm, and level moistens half
Footpath is 30cm, and hollow billet is passed through bypass and is connected with arm.Lay a hollow billet, two hollow billets in the left and right sides of every row crop respectively
Spacing be 100cm, ensure that wherein side capillary watering when will not cause soil moisture at opposite side hollow billet(Water content)'s
Increase, and be divided into two groups of A, B, Fig. 1 to give two groups of hollow billets of A, B according to left and right and be arranged on the structural representation on same arm
Figure, and the stem in every hollow billet is provided with electromagnetic valve, and electromagnetic valve is normally closed solenoid valve, powers as direct current DC12v, that is, is energized
Open, power-off is closed.Fig. 2 gives two groups of hollow billets of A, B and is separately mounted on two parallel arms, and the stem peace in arm
Dress electromagnetic valve.
Embodiment 2, automatic control system
Select a row crop, respectively in the left and right sides of crop row, that is, the neighbouring installation soil moisture sensing of two hollow billets
Device, soil moisture sensor totally 4, be equally divided into two groups, that is, sensor -1,3 with sensor -2,4, respectively be located at crop-planting
At the hollow billet of the left and right sides of row, buried depth is near crop root layer.Soil moisture sensor is voltage sensor, that is, straight
Under stream DC12v power supply condition of power supply, according to soil moisture(Water content)Size, a 0-5v d. c. voltage signal will be exported.
Soil moisture content(Q)Voltage signal(v)Relation be:Q=V/5.Its power supply is carried by central intelligent controller power supply output channel
For, and 0-5v d. c. voltage signal is conveyed to central intelligent controller by control source passage, simultaneously with soil moisture(Contain
The water yield)Low alarm setting value is compared, and arranges the soil moisture of 4 soil moisture sensors herein(Water content)Low alarm setting value
It is followed successively by 60%, 80%, 80%, the 60% of field capacity.
Embodiment 3, the wide row automatization away from root-divided alternative irrigation realizes
Clear and definite first, the target of this research is:" wide row away under the conditions of, efficient and supermatic achieve two groups of water deliverys
Hollow billet is irrigated to crop row both sides respectively successively, and when that is, water delivery hollow billet in A side is irrigated, water delivery hollow billet in B side is closed, and reaches certain
After soil moisture requires, both sides water delivery hollow billet is turned off, and when next time irrigates, water delivery hollow billet in B side is irrigated and the closing of A side water delivery hollow billet,
Reach both sides water delivery hollow billet after certain soil moisture requires to be turned off, Automatic Cycle ".
Before carrying out root-divided alternative irrigation, the soil moisture of agricultural land soil difference position(Water content)There may be certain
Difference, but not too large, simultaneously because in 4 soil moisture sensors, the soil moisture of the 2nd, 3(Water content)Report to the police
Lower limit is the 80% of field capacity, and therefore during field evapotranspiration is sent out, the 2nd, 3 soil moisture sensors are first reported to the police,
Thus driving the 2nd corresponding tunnel, 3 tunnel warning output passage closures.In addition, the soil moisture of agricultural land soil any two points(Contain
The water yield)It is impossible to just the same, more or less all can there are some differences, this will result in after process is sent out in field evapotranspiration
Phase, the numerical value of the 1st, 4 soil moisture sensors -1 merely hit first drops to central intelligent controller low alarm setting value(Field
The 60% of water-holding capacity), thus driving the 1st corresponding tunnel warning output passage first to close, electromagnetic valve A corresponding immediately opens,
A group(Right side)Hollow billet starts to pour water, until it reaches field capacity is poured water stopping.Because the 3rd soil moisture sensor is located at
On the right side of crop row(A group)At hollow billet, the soil moisture value that it records will be changed from small to big, and until field capacity, thus can make
The 3rd tunnel warning output passage becoming closed will be switched off, even if the 4th soil moisture that soil moisture sensor records(Contain
The water yield)It is reduced to the 60% of field capacity, the 4th corresponding tunnel warning output passage closes, and electromagnetic valve B also will not open, B
Group(Left side)Hollow billet also will not be poured water.
On the right side of crop row(A group)The end of capillary watering process, on the right side of crop row, the water content of soil is held in field
The water yield is upper and lower;Because the spacing of crop row both sides hollow billet is sufficiently wide, the irrigation water of both sides hollow billet does not exist and influences each other, that is,
Pouring water of right side hollow billet does not result in left side soil moisture(Water content)Increase, the therefore soil moisture on the left of crop row(Contain
The water yield)Substantially less than the 60% of field capacity, the 2nd, 4 now corresponding tunnel warning output passages are in closure state,
During field evapotranspiration afterwards is sent out, due to the soil moisture of the 1st, 3 soil moisture sensors(Water content)Lower limit alarming value
It is respectively the 60% and 80% of field capacity, the 3rd therefore corresponding tunnel warning output passage can first close, corresponding immediately
Electromagnetic valve B opens, B group(Left side)Hollow billet starts to pour water, until it reaches field capacity is poured water stopping.Due to the 2nd soil water
Sub-sensor is located on the left of crop row(B group)At hollow billet, the soil moisture value that it records will be changed from small to big, until field water holding
Amount, so will result in the 2nd closed tunnel warning output passage and will be switched off, even if the 1st soil moisture sensor records
Soil moisture(Water content)It is reduced to the 60% of field capacity, the 1st corresponding tunnel warning output passage closes, electromagnetic valve A
Also will not open, A group(Right side)Hollow billet also will not be poured water.
On the left of crop row(B group)The end of capillary watering process, on the left of crop row, the water content of soil is held in field
The water yield is upper and lower;Because the spacing of crop row both sides hollow billet is sufficiently wide, the irrigation water of both sides hollow billet does not exist and influences each other, that is,
Pouring water of left side hollow billet does not result in right side soil moisture(Water content)Increase, the therefore soil moisture on the right side of crop row(Contain
The water yield)Basic between 60% the 80% of field capacity, the 3rd now corresponding tunnel warning output passage is in closed form
State, during the field evapotranspiration afterwards is sent out, due to the soil moisture of the 2nd, 4 soil moisture sensors(Water content)Lower limit report
Alert value is respectively the 80% and 60% of field capacity, and the 2nd therefore corresponding tunnel warning output passage can first close, and is left now
Also in off-state, who first closes records depending on the 1st, 4 soil moisture sensors for 1st tunnel, 4 tunnel warning output passages
Soil moisture(Water content)Who first reaches the 60% of field capacity, on the left of crop row(B group)Hollow billet had just filled water, because
This is located on the right side of crop row(A group)The 1st soil moisture that soil moisture sensor records at hollow billet(Water content)First reached
To the 60% of field capacity, the 1st corresponding tunnel warning output passage can first close, and electromagnetic valve A corresponding immediately opens, A
Group(Right side)Hollow billet starts to pour water, until it reaches field capacity is poured water stopping.
Circulate successively, just can achieve wide row away under the conditions of, the automatic control process of root-divided alternative irrigation.I.e. when crop row is right
Side soil moisture(Water content)Reach the 60% of field capacity, simultaneously left side soil moisture(Water content)Reach field capacity
80% when, right side hollow billet starts to pour water;Equally, soil moisture on the left of crop row(Water content)Reach field capacity
60%, right side soil moisture simultaneously(Water content)Reach field capacity 80% when, left side hollow billet starts to pour water.
It can be seen that, the reaching according to based on following 3 points of goal in research of the present invention:" 1. synchronization agricultural land soil any two
The soil moisture content of point is impossible to just the same;2. during arbitrary group of water delivery hollow billet water delivery all not to another group of water delivery hollow billet below
Soil moisture produce impact;3. the soil moisture mutual relation of crop row both sides and its with four soil moisture sensors and two
The interaction relationship of group electromagnetic valve ".
The present invention is according to 4 points of crop row both sides soil moisture(Water content)Size and compound action relation, drive crop row
Two groups of electromagnetic valves of both sides alternately open and close automatically, and pass through water-supply pipeline and hollow billet, will be in good time for irrigation water, appropriate
It is transported to crop left and right sides side, provide moisture guarantee for crop normal growth.Automatically controlling of this root-divided alternative irrigation be
System and method, it is possible to increase the automatization level of water-saving irrigation, have the characteristics that energy-saving and environmental protection, green, low-carbon (LC).
The need strategy of facing agricultural of the present invention modernization and Water resources security is asked, around agricultural water is extensive and water-saving irrigation
The relatively low problem of automatization level, carries out the research away from root-divided alternative irrigation automatic control system and method for the wide row, integrated innovation
Modern Sensor Technology and intelligent control technology, realize the Automated condtrol away from root-divided alternative irrigation for the wide row, be water-saving irrigation from
Dynamicization provides new efficient and practical technological means.
Foregoing description is only used as the enforceable technical scheme of the present invention and proposes, not as single to its technical scheme itself
Restrictive condition.
Claims (10)
1. a kind of wide row away from root-divided alternative irrigation autocontrol method it is characterised in that:It is respectively provided with one group in crop row both sides
With electromagnetic valve(4)Water delivery hollow billet(3), arbitrary group of water delivery hollow billet(3)All not to another group of water delivery hollow billet during water delivery(3)Lower section
Soil moisture produce impact, then for every group of electromagnetic valve(4)Prepare two soil moistures biographies being located at crop row both sides respectively
Sensor(5), then based on following three groups of conditions:
1. the soil moisture content of synchronization agricultural land soil any two points be impossible to just the same;
2. all impact is not produced on the soil moisture below another group of water delivery hollow billet during arbitrary group of water delivery hollow billet water delivery;
3. the soil moisture mutual relation of crop row both sides and its mutual with four soil moisture sensors and two groups of electromagnetic valves
Interactively;
By central intelligent controller(1)Two groups of water delivery hollow billets of control realization(3)Filled to crop row both sides successively respectively
Irrigate, that is, be automatically obtained A side water delivery hollow billet(3)Water delivery hollow billet in B side during irrigation(3)Close, reach two after certain soil moisture requires
Side water delivery hollow billet(3)It is turned off, water delivery hollow billet in B side when next time irrigates(3)Irrigate and A side water delivery hollow billet(3)Close, reach certain
Water delivery hollow billet in both sides after soil moisture requirement(3)It is turned off, Automatic Cycle.
2. wide row according to claim 1 away from root-divided alternative irrigation autocontrol method it is characterised in that:
Ith, it is respectively provided with one group in crop row both sides and carry electromagnetic valve(4)Water delivery hollow billet(3), two groups of electromagnetic valves(4)And water delivery
Hollow billet(3)It is respectively labeled as A, B, arbitrary group of water delivery hollow billet(3)All not to another group of water delivery hollow billet during water delivery(3)The soil of lower section
Humidity produces impact;And every group of water delivery hollow billet(3)Lower section buries two soil moisture sensors respectively(5), add up to four soil
Moisture transducer(5)It is respectively labeled as 1,2,3,4;
IIth, one group of central intelligent controller is set(1), it is provided with power supply output channel, four road voltage signal input channels
It is labeled as 1,2,3,4, four road alarm relay output channels are labeled as 1,2,3,4;
III and then soil moisture sensor 1,3 is set in below water delivery hollow billet A, corresponding soil moisture sensor 2,4 is set
Below water delivery hollow billet B;Meanwhile by four soil moisture sensors 1,2,3,4, four tunnels with central intelligent controller respectively
Voltage signal input channel 1,2,3,4 is corresponding to be connected, central intelligent controller receive respectively four soil moisture sensors according to
Soil moisture state sends the 4 road voltage signals of returning, then by this 4 road voltage signal respectively with set in advance with soil field
Between 4 related tunnel alarm voltage values of water-holding capacity be compared, central intelligent controller controls four tunnels to continue according to comparative result respectively
The folding of electrical equipment warning output passage;Then particularly important, by 1,2 and electromagnetic valve in four road alarm relay output channels
A concatenates, and by 3 in alarm relay output channel, 4 concatenates with electromagnetic valve B;
IVth, last, set that the corresponding alarming value two of four soil moisture sensors is high two low, two below same group of water delivery hollow billet
Prop up the corresponding alarming value of soil moisture sensor one high and one low;
Two groups of water delivery hollow billets are realized by above-mentioned setting(3)Irrigated to crop row both sides successively respectively, that is, be automatically obtained A side
Water delivery hollow billet(3)Water delivery hollow billet in B side during irrigation(3)Close, reach water delivery hollow billet in both sides after certain soil moisture requires(3)All close
Close, water delivery hollow billet in B side when next time irrigates(3)Irrigate and A side water delivery hollow billet(3)Close, reach two after certain soil moisture requires
Side water delivery hollow billet(3)It is turned off, Automatic Cycle.
3. wide row according to claim 2 away from root-divided alternative irrigation autocontrol method it is characterised in that:In step III,
Described central intelligent controller(1)Powered by direct current DC24v power supply, power supply output channel thereon and described four soil moistures
Sensor(5)Connect and provide DC12v power supply for the latter.
4. wide row according to claim 2 away from root-divided alternative irrigation autocontrol method it is characterised in that:In step IV,
Set four corresponding soil moisture content low alarm setting values of soil moisture sensor 1,2,3,4 be followed successively by field capacity 60%,
80%、80%、60%;When the real output value of soil moisture sensor is less than described preset value, it is right that central intelligent controller controls
The alarm relay output channel closure answered, when all alarm relay output channels being connected with a certain electromagnetic valve are all closed
When, electromagnetic valve is opened and is irrigated;Otherwise electromagnetic valve is closed all the time.
5. wide row according to claim 2 away from root-divided alternative irrigation autocontrol method it is characterised in that:Described water delivery hair
Pipe(3)It is arranged on pressure water conveyer pipeline, pressure water conveyer pipeline includes supervisor and some arms(2), supervisor and arm divide
It is not provided with valve.
6. wide row according to claim 5 away from root-divided alternative irrigation autocontrol method it is characterised in that:Crop row both sides
Two groups of water delivery hollow billets(3)Same arm is arranged on by bypass(2)On, and respectively in water delivery hollow billet(3)Stem install
Electromagnetic valve(4).
7. wide row according to claim 5 away from root-divided alternative irrigation autocontrol method it is characterised in that:Crop row both sides
Two groups of water delivery hollow billets(3)It is separately mounted to two parallel arms(2)On, and the stem in arm installs electromagnetic valve(4).
8. the wide row according to claim 6 or 7 away from root-divided alternative irrigation autocontrol method it is characterised in that:Described
Pipe(2)Using the PE pipeline of Ф 50mm, described water delivery hollow billet(3)Using the PE drip irrigation zone of Ф 20mm, dripper spacing is 30cm, water
Flat radius of wetted bulb is 30cm, two groups of water delivery hollow billets of crop row both sides(3)Spacing is 100cm it is ensured that wherein side water delivery hollow billet
(3)The increase of opposite side soil moisture content will not be caused when pouring water.
9. wide row according to claim 2 away from root-divided alternative irrigation autocontrol method it is characterised in that:The described soil water
Sub-sensor(5)For voltage sensor, in crop root layer, it works under direct current DC12v power supply condition of power supply buried depth, root
Size according to soil moisture content exports a 0-5v d. c. voltage signal, and the relation of soil moisture content Q voltage signal V is:Q=V/
5.
10. wide row according to claim 2 away from root-divided alternative irrigation autocontrol method it is characterised in that:Described electromagnetism
Valve(4)For normally closed solenoid valve, power as direct current DC12v, energising unlatching, power-off closing.
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CN114568269A (en) * | 2022-04-11 | 2022-06-03 | 广州大学 | Multi-area circulating alternate drip irrigation method |
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CN111903483B (en) | 2022-04-12 |
CN106386412B (en) | 2020-06-09 |
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Effective date of registration: 20200729 Address after: 050021 No. 286 Huai Middle Road, Yuhua District, Hebei, Shijiazhuang Patentee after: CENTER FOR AGRICULTURAL RESOURCES Research Institute OF GENETICS AND DEVELOPMENTAL BIOLOGY CHINESE ACADEMY OF SCIENCES Address before: 050021 No. 286 Huai Middle Road, Yuhua District, Hebei, Shijiazhuang Patentee before: INSTITUTE OF GENETICS AND DEVELOPMENTAL BIOLOGY, CHINESE ACADEMY OF SCIENCES |