CN105638324A - CO2 fertilization control system for greenhouse - Google Patents
CO2 fertilization control system for greenhouse Download PDFInfo
- Publication number
- CN105638324A CN105638324A CN201610169709.3A CN201610169709A CN105638324A CN 105638324 A CN105638324 A CN 105638324A CN 201610169709 A CN201610169709 A CN 201610169709A CN 105638324 A CN105638324 A CN 105638324A
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- China
- Prior art keywords
- intensity
- illumination
- control system
- booth
- blower fan
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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
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/18—Greenhouses for treating plants with carbon dioxide or the like
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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
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
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- 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
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cultivation Of Plants (AREA)
- Greenhouses (AREA)
Abstract
The invention relates to a CO2 fertilization control system for a greenhouse, belongs to the technical field of agricultural product production, and relates to the control on an environmental factor of the greenhouse. The control system comprises a processor, a key acquisition module, an illumination intensity acquisition module and a valve control module; the processor is internally provided with a memory and a parameter setting module; CO2 saturation points of each plant under different illumination intensity are stored in the memory; the processor is used for reading plant varieties input by the key acquisition module and illumination intensity determined by the illumination intensity acquisition module, searching for the corresponding CO2 saturation points in the memory, determining the CO2 application amount, and translating the CO2 application amount into opening time of a valve; the valve control module is used for controlling a valve of a CO2 gas source. Based on different required CO2 amounts of plants under different illumination intensity, the system supplies CO2 appropriately, so as to improve the plant photosynthetic rate and economic benefits.
Description
Technical field
The invention belongs to thing working application technical field, it relates to the environmental factor control of warmhouse booth, is specifically related to the CO of a kind of warmhouse booth2Fertilization control system.
Background technology
Along with updating of technology of facilities and breeding and cultivation technology, industrialized agriculture crop yield is greatly improved, but the output that the disadvantageous growing environment factor makes agricultural crops reality has only played about the 24% of its production potential, limits the raising of output.
CO2It is that crop carries out one of photosynthetic raw material, therefore, CO2Concentration is the very important environmental factor affecting plant growth. CO2Fertilising can strengthen vegetables to the resistance of biotic stress and abiotic stress, and the mineral substance changing vegetable crop absorbs and distribution, also affects the ultrastructure of vegetable crop simultaneously. Crop carries out photosynthesis can consume a large amount of CO2If, indoor CO2Can not get supplementing in time, CO2Concentration can rapid decrease. Under obstructed landscape condition, CO2Concentration can be reduced to crop CO2Below compensation point, even if in ventilation situation, indoor CO2Concentration also may lower than outdoor CO2Concentration. Therefore, too low CO2Concentration has become the photosynthetic key constraints of protected crop, constrains crop growth, reduces crop yield and quality.
Although having some places at use CO2, have received good result after the environmental factor control method such as humidity, but a lot of place also not yet use or use after poor effect, even some place in use have also appeared some problems, therefore to CO2Fertilization effect is demoted to praise and is differed. Why there will be above-mentioned situation, major cause have China to lack cost is low, safe, simple to operate, gas production rate height, be easy to control CO2Generation equipment and shortage enrich CO2Afterwards to the rational rich water quality management measure of crop.
Summary of the invention
In order to overcome the deficiencies in the prior art, the present invention provides the CO of a kind of warmhouse booth2Fertilization control system, by considering the conditions such as floristics, growing stage, cultivation condition and other environmental factorss, selects suitable CO2Enrich method, fertilising concentration and fertilization time.
The technical scheme of the present invention is: the CO of a kind of warmhouse booth2Fertilization control system, comprises treater, key acquisition module, intensity of illumination acquisition module, valve control module and humiture sensor, the built-in storer of described treater and optimum configurations module, preserves the CO of each kind of plant under different illumination intensity in storer2Saturation point, the data collected are exported to treater by humiture sensor, the intensity of illumination that the plant variety data of treater reading key acquisition module input and intensity of illumination acquisition module detect, searches the CO that in storer, this kind of plant is corresponding under a certain intensity of illumination2Saturation point, confirms CO2The amount of discharging, realizes CO by valve control module2Release control.
Above-mentioned optimum configurations module also comprises the time point that intensity of illumination acquisition module gathers intensity of illumination every day and arranges, concrete, in 3-4 middle of the month, sunrise detected intensity of illumination after 1 hour, late April to May, and sunrise detects after half an hour, in November to February, sunrise detection in 2 hours. Plant variety, intensity of illumination and CO in memory2Synopsis in, intensity of illumination is at 27W m-2Time above, CO2The amount of discharging is greater than 0. Controlling System also comprises fan control module and blower fan, and described blower fan forms circulating current in the inner two-way cycle arrangement of booth, its sense of rotation for making booth inside. Concrete, 10 to 20 centimetres, blower fan height distance ground, forms the 10-20 degree elevation angle with ground, and the sense of rotation of blower fan flows to eminence from lower for making air-flow. Blower fan wind speed is located at 0.3��1.0m s-1In scope, the frictional belt drag reduction of plant leaf, stomatal conductance increases; The air exchanging rate of described blower fan is 10h-1Namely, also every 6min blower fan start and stop are once. Above-mentioned electromagnetic valve one end and CO2Qi Yuan UNICOM, the other end connects airway, and airway diameter is 2cm, and the other end is closed, and it is the aperture of 2mm that described airway is provided with a diameter at interval of 1 meter. Controlling System also comprises CO2Concentration detection module, CO2Concentration detection module is discharging CO2After gas fertilizer, detect CO in real time2Change in concentration, the CO inside and outside booth2After concentration is consistent, to booth forced ventilation. When giving booth forced ventilation, the unidirectional work of the blower fan in booth, its sense of rotation forms uniflux air-flow for making booth inside. CO2The amount of discharging compare CO2Saturation point low.
The present invention has following positively effect: by plant under different light intensity to CO2Demand, give suitable supplementing, it is to increase the photosynthetic rate of plant, it is to increase economic benefit.
Accompanying drawing explanation
Fig. 1 is the CO of the specific embodiment of the invention2Fertilization control system structure iron.
Fig. 2 is the wind turbine layout figure of the specific embodiment of the invention.
In figure, 1, blower fan.
Embodiment
Compare accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is such as the effect of the mutual position between the shape of involved each component, structure, each several part and the relation of connection, each several part and principle of work, manufacturing process and operation using method etc., it is described in further detail, to help those skilled in the art that invention design, the technical scheme of the present invention are had more complete, accurate and deep understanding.
System of the present invention comprises treater, key acquisition module, intensity of illumination detection module, CO2Concentration detection module, fan control module and solenoid valve control module, comprise storer and optimum configurations module in treater, key acquisition module is used for user and inputs parameter, due to the CO of different plants2Saturation point is different, therefore must input floristics by key acquisition module, in addition, owing to season changes, sunrise time, in change, also means that plant carries out the photosynthetic time in change, user needs the acquisition time arranging intensity of illumination detection module, is also CO2Discharge the time. By key acquisition module, user manually input plant type and every day CO2Discharge time point, in memory, pre-set the CO of every kind of plant under different intensities of illumination2Saturation point, the CO needing to discharge determined by controller by lookup table mode2Volume, CO2Volume convert the time of discharging to, the also ON time of i.e. magnetic valve.
Due to CO2Density bigger than air, so CO2Deposit to bottom booth, affect plant canopy and the inner CO of group2Be uniformly distributed, thus impact enrich CO2The effect of gas fertilizer.Plant carries out a large amount of CO of photosynthesis consumption2If wind speed is less, CO can be made2Rate of diffusion slow down, cause the inner CO of plant community2Can not get supplementing in time, thus reduce the photosynthetic rate of plant. Increase Fan Equipment in booth inside, be conducive to improving the air circulation of booth inside, make the CO in booth2Being evenly distributed, meanwhile, the frictional belt drag reduction of plant leaf, stomatal conductance increases, it is to increase CO2Transformation efficiency.
As shown in Figure 2, the present invention sets up multiple blower fan in booth inside, makes to be formed in booth circulating current, 10 to 20 centimetres, blower fan height distance ground, forms the 10-20 degree elevation angle with ground, and wind speed is located at 0.3��1.0m s-1In scope. Blower fan is located at the height that distance ground is certain, and have certain elevation angle with ground, blower negative pressure face is the side near ground, when this highly can ensure that blower fan operates, the negative pressure face air circulation of blower fan can not be hindered, if too close to ground, because air circulation is obstructed, bigger noise can be produced. The 10-20 degree elevation angle can by the CO of deposition2To eminence diffusion, ensure that plant canopy is to CO2Demand. Wind speed is at 0.3��1.0m s-1Time in scope, the frictional belt drag reduction of plant leaf, stomatal conductance increases, and enriches CO2Effect increase. If wind speed is too high, the part holes of plant being caused to close, stomatal conductance reduces, CO2Transformation efficiency reduce.
The air exchanging rate of greenhouse under ventilation state is at 10h-1More than secondary, therefore, the blower fan of the present invention can adopt the mode of batch operation, blower fan on average every 6min work once, the time length of every task is determined because of the distance between blower fan, ensures air all circulation in whole greenhouse, CO2It is evenly distributed, then can shut down.
The CO of the present invention2Gas source adopts the CO of bottled liquid state2, the CO of bottled liquid state2Concentration easily controls, convenient and safe, by airway and on aperture by CO2Being applied to uniformly in warmhouse booth, conduit is fixed on the top of booth, the diameter of airway is 2cm, and one is connected with steel cylinder venting port, closes for one, the aperture made a call to a diameter be about 2mm at interval of 1 meter on airway. The venting port of steel cylinder is by electromagnetic valve control.
Due to the respiration in plant night, cause the CO in canopy2Concentration raises, these CO2Just can as plant photosynthesis raw material in the daytime, the CO in sunrise after 1-2 hour, in canopy2The concentration height in the concentration ratio external world, is conducive to promoting the photosynthesis of plant, it is not necessary to additionally apply CO2Gas is fertile. Controlling System of the present invention in sunrise after 1-2 hour, then according to environmental factorss such as current intensity of sunshines, it is contemplated that CO2Fertilising. At rainy weather, photosynthesis is not strong, is not suitable for applying gas fertile.
Concrete, in 3-4 middle of the month, sunrise detected CO after 1 hour2Concentration, in late April to May, sunrise detects CO after half an hour2Concentration, in November to February, sunrise 2 hours detection CO2Concentration, because the temperature in winter is relatively low, intensity of sunshine is also on the low side, and photosynthetic rate is lower, CO after general two hours2Density loss to lower level. Summer temp is higher, it is necessary to ventilates and lowers the temperature in booth, but even if keep ventilating always, the CO of booth inside2Concentration also will lower than the 5%-10% in the external world, summer booth CO2Fertilising concentration unsuitable too high, maintain the CO being bordering on air2Concentration level, has significant effect. Improve the Net Photosynthetic Rate of plant to a great extent. By CO2Concentration enriches outdoor horizontal, even if the air exchanging rate of booth is very fast, there will not be CO2Spill into outdoor, now, enrich CO2Utilising efficiency be about 1.
The portable instrument for determining photosynthesis of TPS-2 is set in booth and measures CO2Concentration, by the intensity of illumination in intensity of illumination sensor measuring chamber, intensity of illumination can to CO2Compensation point and saturation point have an impact, by organizing Experimental comparison, at 8.5,27,61,129,265W m more-2Under light intensity, observe 300 to 1000umol mol respectively-1CO2Photosynthetic rate under concentration, it has been found that 8.5W m-2Under light intensity, increase CO2Concentration to photosynthetic rate improve not obvious, 27W m-2Under light intensity, photosynthetic rate is from 5umol m-2��s-1It is increased to 10umol m-2��s-1, increase comparatively obvious, 61,129,265W m-2Under light intensity, photosynthetic rate is more obvious, and therefore, the present invention selects 27W m-2As with reference to value, at 27W m-2More than light intensity, it is contemplated that apply CO to plant2Gas is fertile.
Different floristics is to CO2Assimilated efficiency also different, C3 plant is to CO2Assimilated efficiency with CO2Concentration, the factor such as light intensity impact variation relatively big, but C4 plant is when other conditions meet, 330umol mol-1Time, photosynthetic rate substantially no longer increases, and the CO of outdoor2Concentration can meet this requirement substantially.
In the use procedure of reality, CO will be set2The amount of discharging lower than actual saturation point because CO2Absorption be also subject to the impact of other environmental factors, but this is a complicated process being in dynamic change, it is very difficult to determine a definite value, therefore, by CO2Saturation point arrange ratio actual value low, it is ensured that CO2Concentration can not exceed saturation point, avoids excessive CO2Concentration, plant-growth is unfavorable, also waste CO2Gas source.
Discharged CO2After gas, booth closes, and plant carries out photosynthesis, carries out along with photosynthetic, indoor CO2Concentration starts to reduce, CO2Concentration detection module Real-Time Monitoring CO2Concentration, when dropping to external environment level, it is possible to open warmhouse booth, forced ventilation, makes the Gas scavenging in booth. At this moment, it is possible to close the side blower fan in Fig. 2, gas is circulated towards a direction. Fan control module, for the gas circulation controlled in greenhouse, sets the opening time interval of blower fan and each working hour.
Above in conjunction with accompanying drawing to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that the design of the method for the present invention carries out with technical scheme; or without improving, the design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention.
Claims (8)
1. the CO of a warmhouse booth2Fertilization control system, it is characterised in that, comprise treater, key acquisition module, intensity of illumination acquisition module and valve control module, the built-in storer of described treater and optimum configurations module, in storer, preserve the CO of each kind of plant under different illumination intensity2Saturation point, the intensity of illumination that the plant variety data of treater reading key acquisition module input and intensity of illumination acquisition module detect, searches the CO that in storer, this kind of plant is corresponding under a certain intensity of illumination2Saturation point, confirms CO2The amount of discharging, realizes CO by valve control module2Discharge control.
2. the CO of warmhouse booth according to claim 12Fertilization control system, it is characterized in that, described optimum configurations module also comprises the time point setting that intensity of illumination acquisition module gathers intensity of illumination every day, in 3-4 middle of the month, sunrise detected intensity of illumination after 1 hour, late April to May, and sunrise detects after half an hour, in November to February, sunrise detection in 2 hours.
3. the CO of warmhouse booth according to claim 22Fertilization control system, it is characterised in that, plant variety, intensity of illumination and CO in described storer2Synopsis in, intensity of illumination is at 27W m-2Time above, CO2The amount of discharging is greater than 0.
4. the CO of warmhouse booth according to claim 12Fertilization control system, it is characterised in that, described Controlling System also comprises fan control module and blower fan (1), and described blower fan (1) forms circulating current in the inner two-way cycle arrangement of booth, its sense of rotation for making booth inside.
5. the CO of warmhouse booth according to claim 42Fertilization control system, it is characterised in that, 10 to 20 centimetres, described blower fan (1) height distance ground, forms the 10-20 degree elevation angle with ground, and the sense of rotation of blower fan (1) is for making air-flow flow from lower to eminence; Described blower fan (1) wind speed is located at 0.3��1.0m s-1In scope; The air exchanging rate of described blower fan (1) is 10h-1, blower fan (1) start and stop in every 6 minutes are once.
6. the CO of warmhouse booth according to claim 12Fertilization control system, it is characterised in that, described valve one end and CO2Qi Yuan UNICOM, the other end connects airway, and airway diameter is 2cm, and the other end is closed, and it is the aperture of 2mm that described airway is provided with a diameter at interval of 1 meter.
7. the CO of warmhouse booth according to claim 42Fertilization control system, it is characterised in that, described Controlling System also comprises CO2Concentration detection module, CO2Concentration detection module is discharging CO2After gas fertilizer, detect CO in real time2Change in concentration, the CO inside and outside booth2After concentration is consistent, to booth forced ventilation, during to booth forced ventilation, blower fan (1) work of single side in booth, its sense of rotation forms uniflux air-flow for making booth inside.
8. the CO of warmhouse booth according to claim 12Fertilization control system, it is characterised in that, described CO2The amount of discharging compare CO2Saturation point low.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610169709.3A CN105638324A (en) | 2016-03-21 | 2016-03-21 | CO2 fertilization control system for greenhouse |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610169709.3A CN105638324A (en) | 2016-03-21 | 2016-03-21 | CO2 fertilization control system for greenhouse |
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| CN105638324A true CN105638324A (en) | 2016-06-08 |
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| CN201610169709.3A Pending CN105638324A (en) | 2016-03-21 | 2016-03-21 | CO2 fertilization control system for greenhouse |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107656564A (en) * | 2016-07-26 | 2018-02-02 | 株式会社有机尼科 | The warm indoor environment control device of agricultural |
| CN114894932A (en) * | 2022-05-07 | 2022-08-12 | 安徽工程大学 | Method for detecting trace amount peculiar smell gas components in automobile textile fabric |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107656564A (en) * | 2016-07-26 | 2018-02-02 | 株式会社有机尼科 | The warm indoor environment control device of agricultural |
| CN114894932A (en) * | 2022-05-07 | 2022-08-12 | 安徽工程大学 | Method for detecting trace amount peculiar smell gas components in automobile textile fabric |
| CN114894932B (en) * | 2022-05-07 | 2023-08-01 | 安徽工程大学 | Method for detecting trace odor components in textile fabric for automobile |
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