CN110495381A - A kind of controlled with aerating irrigates the device and method for reducing rice field greenhouse gas emission - Google Patents
A kind of controlled with aerating irrigates the device and method for reducing rice field greenhouse gas emission Download PDFInfo
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- CN110495381A CN110495381A CN201910874696.3A CN201910874696A CN110495381A CN 110495381 A CN110495381 A CN 110495381A CN 201910874696 A CN201910874696 A CN 201910874696A CN 110495381 A CN110495381 A CN 110495381A
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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
- A01G25/06—Watering arrangements making use of perforated pipe-lines located in the soil
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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
-
- 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
- A01G7/00—Botany in general
- A01G7/06—Treatment of growing trees or plants, e.g. for preventing decay of wood, for tingeing flowers or wood, for prolonging the life of plants
Abstract
The invention discloses a kind of controlled with aerating to irrigate the device and method for reducing rice field greenhouse gas emission, including irrigation rig, aerator, air pump, single-chip microcontroller and lysimeter, the irrigation rig includes water inlet, casing and water outlet, the water outlet is communicated by pipeline with the inside of lysimeter, it pops one's head in filled with FDR is embedded in soil and soil the inside of the lysimeter, the single-chip microcontroller is popped one's head in by conducting wire with FDR and air pump is connected, the air pump is communicated by conduit with the air inlet of aerator, and the outlet of the aerator is communicated with casing.The present invention passes through single-chip microcontroller real-time monitoring paddy soil moisture content and regulates and controls, when the field moisture content that FDR probe measures rice field is lower than the soil moisture content lower limit of default rice each breeding time, simultaneously Xiang Shuizhong aerating of pouring water.The configuration of the present invention is simple, and farmland greenhouse effects can be effectively reduced, it is low cost, high-efficient, it can be applicable in fields such as agricultural, scientific research, environment.
Description
Technical field
The invention belongs to field of agricultural irrigation, and in particular to a kind of controlled with aerating irrigates reduction rice field greenhouse gas emission
Device and method.
Background technique
Greenhouse effects are the environmental problems that current people must not think little of, and most important greenhouse gases have CO2、CH4And N2O
Three kinds, and with CH4For, Irrigated paddy field is atmosphere CH4One of most important anthropogenic discharge source, because of the anaerobic environment basined irrigation
Be conducive to CH with lower Eh (oxidation-reduction potential)4Generation, in addition, rice field generate N2O and CO2Also it should not be underestimated.To answer
To the status of China's water scarcity, water-saving irrigation technique is paid attention to and is developed, and it is one of extensive that control, which is irrigated,
The Water Saving Irrigation Mode of proof, draining dry field mode improve soil aeration situation, promote CH4Oxidation, plant receives water
Divide limitation that can close part holes, can also reduce the CH that a part of plant generates4, however, the frequency of irrigation that control is irrigated is limited
And it is only limitted to pouring water several times for later period breeding time, it is limited by factors such as temperature, the pressure of deep subsoil, the oxygen in air is very
It is insoluble in water, dissolved oxygen needed for being converted into paddy growth.
Aerating irrigation is a kind of Irrigation developed in recent years, has been demonstrated have effects that preferably to increase production.Mesh
There are mainly two types of modes: (1) physics gas entrainment method for preceding aerating irrigation, and also known as mechanical aerating is built upon on the basis of Venturi tube,
Pure oxygen or compressed air are injected before irrigation water is transmitted to field.In venturi gas injection process by micro-bubble with
Water mixing, the oxygen for having sufficient gaseous state oxygen in irrigation water and having dissolved, after aerating the oxygen concentration of water depend on temperature with
Pressure difference inside and outside syringe ports；(2) chemical gas entrainment method, chemical agent is placed in water and directly generates oxygen by chemically reacting
Gas is melted into water, hydrogen peroxide (H2O2) it is exactly one of compound, water and oxygen can be resolved by Soil fixed NH_4+.
Although chemical gas entrainment method oxygen concentration compared with machinery fills oxygen wants low, effect is pretty good.It is mostly used however, current aerating is irrigated
In underground drip irrigation oxygenation field, aerating is irrigated and couples shorter mention with control irrigation, and existed more and be difficult to adjust irrigation frequency
And the problem of irrigation period, how to couple water-saving and reduction rice field greenhouse gas emission is a urgent problem to be solved.China
Patent CN103585905A discloses a kind of circulation microbubble generator, is oxygenated repeatedly by circulating path and generates microvesicle, however
Not the problem of not accounting for agricultural water conservation and farmland greenhouse gas discharge.
Summary of the invention
Goal of the invention: it is an object of the present invention to provide a kind of controlled with aerating to irrigate the device for reducing rice field greenhouse gas emission
And method, it solves the problem of to irrigate aerating to irrigate to couple to exist with control to be difficult to adjust irrigation frequency and irrigation period.
Technical solution: a kind of controlled with aerating of the present invention irrigates the device for reducing rice field greenhouse gas emission, including irrigates
Device, aerator, air pump, single-chip microcontroller and lysimeter, the irrigation rig include water inlet, casing and water outlet, it is described go out
The mouth of a river is communicated by pipeline with the inside of lysimeter, and the inside of the lysimeter is visited filled with FDR is embedded in soil and soil
Head, the single-chip microcontroller is popped one's head in by conducting wire with FDR and air pump is connected, and the air pump passes through the air inlet phase of conduit and aerator
Logical, the outlet of the aerator is communicated with casing.
Further, described sleeve pipe is also successively arranged air deflector, injector, flow spoiler and disperser, institute along water (flow) direction
The casing stated between the outlet of aerator and air deflector and injector communicates.In casing through water conservancy diversion, injection, flow-disturbing and point
It dissipates, the gentle carry out high degree of dispersion of water, generates micron and nanoscale micro-bubble, the water containing microbubble enter filling through water outlet
Pipeline is irrigate to be irrigated.
Further, the water outlet of the irrigation rig is equipped with the solenoid valve that control water flow is closed, and the solenoid valve is logical
Conducting wire is crossed to be connected with single-chip microcontroller.
Further, kind is implanted with rice at the top of the soil of the lysimeter, is filled with clinoptilolite, clinoptilolite in soil
Particle size range be 40~80 mesh.Clinoptilolite amount ranges are 400~600kg/ mus.
Further, the top of the lysimeter is equipped with extension type static chamber, is equipped in the extension type static chamber
For measuring the greenhouse gases sensor of rice field emission greenhouse gas concentration, the greenhouse gases sensor passes through conducting wire and monolithic
Machine is connected.Because surveying greenhouse gases needs under normal conditions to carry out in closed static chamber, but in view of illumination, plant growth etc.
Problem is just provided with extension type static chamber.
Further, the greenhouse gases sensor can be CH4Concentration sensor, N2O concentration sensor and CO2Concentration
One of sensor, two or three.
Further, the aerator is microbubble generator, and the air pump selects one in FAA8006 or PM8001
Kind.Microbubble generator can select venturi microbubble generator, to generate micron and nano grade air bubbles, become irrigation water
Heavy-oxygen-enriched water.
The present invention also provides a kind of methods for being controlled with aerating and irrigating and reducing rice field greenhouse gas emission, including walk as follows
It is rapid:
(1) before rice growing, the clinoptilolite of 40~80 mesh is mixed with base manure, and turns over 0~10cm soil horizon；
(2) the soil moisture content data of rice each breeding time are preset in single-chip microcontroller, and FDR probe is controlled in fact by single-chip microcontroller
When monitoring paddy soil moisture content and regulate and control；When the field moisture content that FDR probe measures rice field is lower than default rice each breeding time
Soil moisture content lower limit when, single-chip microcontroller control is synchronous to open air pump and solenoid valve, carries out aerating and pours water；When FDR probe measures
When the field moisture content in rice field is higher than the soil moisture content upper limit of default rice each breeding time, stop pouring water；
(3) after the completion of pouring water, extension type static chamber is closed, and greenhouse gases sensor detects rice field greenhouse gas concentration simultaneously
Single-chip microcontroller is fed back to, judges whether to need oxygenation according to the greenhouse gas concentration of rice field greenhouse gas concentration and default rice, if
Meet the requirements then air pump closing, stops aerating, otherwise continues aerating.
Further, in the step (2), the soil moisture content of rice each breeding time is preset specifically: the rice striking root phase
Water quantity holding soil horizon more than 10~30mm shallow water layer, rice plant of tillering stage soil moisture content be 60~70%；Rice pulls out
Saving boot stage soil moisture content is 70~80%；Rice Heading florescence soil moisture content is 78~80%, rice milky ripe stage soil
Earth moisture content is 70~72%, and the rice stage of yellow ripeness is without pouring water.
Further, in the step (3), the greenhouse gas concentration of rice is preset specifically: CH4≤20mg CH4/
(m2H), N2O≤500μg N2O/(m2H), CO2≤20mg CO2/(m2·h)
Working principle:
Paddy growth be water, fertilizer, air and heat, light it is coefficient as a result, however be concentrated mainly on water at present, on fertilizer, for
The research of gas is less.It is passed through suitable air to crop root soil, can not only be effectively improved aeration status, the soil of soil
Oxygen in water (DO) content, oxidation-reduction potential (Eh), temperature etc. promote the growth of root system of plant, to improve crop
Yield, and the CH of rice field waterflooding generation can be effectively reduced4Isothermal chamber gas.Irrigated paddy field is atmosphere CH4Important emission source,
Because the anaerobic environment and lower Eh (oxidation-reduction potential) basined irrigation are conducive to CH4Generation, and the draining of water-saving irrigation shine
Field improves soil aeration situation, promotes CH4Oxidation, plant receive moisture limitation can close part holes, can also reduce by one
The CH that plant part generates4.However, the frequency of irrigation of control irrigation is limited and is only limitted to pouring water several times for later period breeding time, by
The limitation of the factors such as temperature, the pressure of deep subsoil, the oxygen in air are difficult soluble in water, are converted into needed for paddy growth
Dissolved oxygen, aerating irrigation be then expected to this problem of very good solution, in irrigation water nanoscale microbubble can after pouring water several days lands
Continuous rupture, the inside institute is oxygenous, can easily be dissolved in the water, and soil oxygen in water is made to remain at one relatively
Higher level, facilitates paddy growth.
In traditional irrigation system, also eliminated in root zone hole because of irrigation water while providing irrigation water for crop
Air often makes root zone interim or long-term anoxic occur.It under anaerobic conditions, on the one hand will when the concentration of oxygen is sufficiently low
It limits mitochondria and generates ATP, crop is caused to generate air hunger, and then influence the function of root to be substantially reduced the growing way of plant.Separately
On the one hand crop can generate toxicant, such as Fe under anoxic conditions2+, alcohol, Al3+、Mg2+With organic acid (acetic acid, propionic acid,
Butyric acid), excessive sulfide and CH4To inhibit the function of root.In addition, anoxic causes the content of crop chlorophyll to reduce, stomata
Aperture reduces, to reduce the photosynthesis of crop field exterior portion point.In the vigorous period root respiration oxygen consumption of plant growth
Larger, it is relatively low that normal irrigation certainly will will cause root soil oxygen concentration, if soil aeration is bad, oxygen cannot get
It timely supplements, then root system absorbs moisture from soil and nutrient is also suppressed, does not just supply crop prosperous growth much
Physiological requirements finally influence whether the economic flow rate of crop.Therefore the oxygen concentration around the root is down to being not enough to supply root
When respiration and microbial activities, the growth of root will be restricted, or even will appear rotten seedling death phenomenon, so inhibit crop from
To the absorption of moisture and nutrient in soil, crop yield and quality are improved to influence.Aerating irrigation is by irrigation water
Ventilation, mixes micro-bubble with irrigation water and achievees the purpose that oxygenation, is realized using the measure of direct past crop root oxygen therapy
The optimization of rhizosphere gaseous environment promotes microbial activities, and this process is irrigated plus the control of alternation of wetting and drying, can be well
Inhibit the discharge of rice field greenhouse gases methane etc..
The utility model has the advantages that compared with the prior art, the present invention has the following beneficial effects:
(1) promote plant growth；
(2) DO is increased, CH is significantly reduced4Discharge；
(3) while increasing economic efficiency, realize that water-saving, energy saving, environment is good；
(4) soil effective fertility is improved, promotes the aerobic respiration of crop root, effectively improves crop root and inhaled from soil
Moisture and nutrient are received, to improve Crop yield and quality；
(5) automation control, real-time online make feedback；
(6) cost is relatively low for apparatus of the present invention, energy conservation and environmental protection, is suitable for the numerous areas such as scientific research, agricultural, environment.
Detailed description of the invention
Fig. 1 is schematic structural diagram of the device of the invention；
Fig. 2 is the method for the present invention flow chart.
Specific embodiment
The present invention is described further with reference to the accompanying drawings and examples:
Embodiment 1
As depicted in figs. 1 and 2, a kind of controlled with aerating of the present invention irrigates the device for reducing rice field greenhouse gas emission, packet
Irrigation rig 1, aerator 2, air pump 4, single-chip microcontroller 5 and lysimeter 11 are included, irrigation rig 1 includes water inlet 101, casing 104
With water outlet 106, casing 104 is also successively arranged air deflector 102, injector 103, flow spoiler 107 and disperser along water (flow) direction
105,
Irrigation water is after 101 sleeve pipe 104 of water inlet, and air is through 2 sleeve pipe 104 of aerator, in casing 104
After 102 water conservancy diversion of air deflector, the injection of injector 103,107 flow-disturbing of flow spoiler and disperser 105 disperse, the gentle progress height point of water
It dissipates, generates micron and nanoscale micro-bubble, the water containing microbubble is irrigated through water outlet 106 into pipeline；Water outlet
Mouth 106 is communicated by pipeline with the inside of lysimeter 11, and the inside of lysimeter 11, which is filled in soil 9 and soil 9, is embedded with FDR
Probe 10, to monitor paddy soil moisture content, kind is implanted with rice at the top of the soil 9 of lysimeter 11, and tiltedly hair boiling is filled in soil 9
Stone 8, the particle size range of clinoptilolite 8 are 40~80 mesh, and 8 amount ranges of clinoptilolite are 400~600kg/ mus；
Because surveying greenhouse gases needs under normal conditions to carry out in closed static chamber, but consider illumination, plant growth
The problems such as, it is just provided with extension type static chamber 6, extension type static chamber 6 is located at the top of lysimeter 11, and extension type is static
The greenhouse gases sensor 7 for measuring rice field emission greenhouse gas concentration is equipped in case 6, greenhouse gases sensor 7 can be
CH4Concentration sensor, N2O concentration sensor and CO2One of concentration sensor, two or three, greenhouse gases sensor 7
It is connected by conducting wire with single-chip microcontroller 5, single-chip microcontroller 5 is that can simply capture data, issue instruct and regulation；
Single-chip microcontroller 5 is also connected by conducting wire and FDR probe 10 and air pump 4, air pump 4 pass through conduit 3 and aerator 2 into
Port communicates, and the outlet of aerator 2 is communicated with casing 104, the outlet specific location of aerator 2 be with air deflector 102 and
Casing 104 between injector 103 communicates；The inlet of aerator 2 communicates (in figure not with the water inlet 101 of irrigation rig 1
Depending on out), aerator 2 is microbubble generator, and microbubble generator can select venturi microbubble generator, micro- to generate
Rice and nano grade air bubbles make irrigation water become heavy-oxygen-enriched water.And air pump 4 selects one of FAA8006 or PM8001, irrigation rig
The solenoid valve 12 that control water flow is closed is equipped at 1 water outlet 106, solenoid valve 12 is connected by conducting wire with single-chip microcontroller 5；
Apparatus of the present invention control FDR 10 real-time monitoring paddy soil moisture content of probe by single-chip microcontroller 5 and regulate and control, and FDR is visited
One of first 10 model FDR-100 or MST3000, FDR probe 10 can read soil moisture content, principle with real-time measurement
Be with using electromagnetic pulse principle, according to electromagnetic wave, frequencies of propagation measures the apparent dielectric constant ε of soil in the medium, thus
Obtain volumetric water content of soil θ v；When the field moisture content that FDR probe 10 measures rice field reaches the soil of default rice each breeding time
When earth moisture content lower limit, single-chip microcontroller 5 is synchronous to open air pump 4 and solenoid valve 12, and start to pour water simultaneously aerating；When FDR probe 10 measures
When the field moisture content in rice field is higher than the soil moisture content upper limit of default rice each breeding time, stop pouring water.Primary completion of pouring water
Afterwards, extension type static chamber 6 is closed, and greenhouse gases sensor 7 detects rice field greenhouse gas concentration and feeds back to single-chip microcontroller 5, root
Greenhouse gas concentration according to rice field greenhouse gas concentration and default rice judges whether to need oxygenation, if rice field greenhouse gas concentration
It is not high, without oxygenation meet the requirements then air pump 4 closing, stop aerating, otherwise continue aerating.
The present invention also provides a kind of methods for being controlled with aerating and irrigating and reducing rice field greenhouse gas emission, including walk as follows
It is rapid:
(1) before rice growing, the clinoptilolite 8 of 40~80 mesh is mixed with base manure, and turns over 9 layers of 0~10cm soil；
(2) the soil moisture content data of rice each breeding time are preset in single-chip microcontroller, and FDR probe is controlled by single-chip microcontroller 5
10 real-time monitoring paddy soil moisture content simultaneously regulate and control；When the field moisture content that FDR probe 10 measures rice field is each lower than default rice
When the soil moisture content lower limit of breeding time, the control of single-chip microcontroller 5 is synchronous to open air pump 4 and solenoid valve 12, carries out aerating and pours water；When
When the field moisture content that FDR probe 10 measures rice field is higher than the soil moisture content upper limit of default rice each breeding time, stop pouring water；
In step (2), the soil moisture content of rice each breeding time is preset specifically: the water quantity holding soil of rice striking root phase
The shallow water layer of 9 layers or more 10~30mm, rice plant of tillering stage soil moisture content are 60~70%；Rice jointing-booting stage soil contains
Water rate is 70~80%；Rice Heading florescence soil moisture content be 78~80%, rice milky ripe stage soil moisture content be 70~
72%, the rice stage of yellow ripeness is without pouring water；
(3) after the completion of pouring water, extension type static chamber 6 is closed, and greenhouse gases sensor 7 detects rice field greenhouse gas concentration
And single-chip microcontroller 5 is fed back to, judge whether to need oxygenation according to the greenhouse gas concentration of rice field greenhouse gas concentration and default rice,
If rice field greenhouse gas concentration is not high, without oxygenation meet the requirements air pump 4 close, stop aerating, otherwise continue aerating.
In step (3), the greenhouse gas concentration of rice is preset specifically: CH4≤20mg CH4/(m2H), N2O≤500μ
g N2O/(m2H), CO2≤20mg CO2/(m2·h)。
Surveyed rice yield and greenhouse gas emission are as shown in the table:
Lower paddy rice yield forming and greenhouse gas emission are irrigated in 1 aerating of table control
Embodiment 2
Apparatus of the present invention keep air pump 4 to be in off state manually on the basis of embodiment 1, remain control and irrigate shape
State.
Surveyed rice yield and greenhouse gas emission are as shown in the table:
Lower paddy rice yield forming and greenhouse gas emission are irrigated in the control of table 2
| Every cave spike number | Number of productive ear | Setting percentage | Mass of 1000 kernel | Sample prescription yield | CH4Flux |
| Fringe | Wan Sui/mu | % | g | Kg/ mus | mg/m2/h |
| 14 | 28.91 | 0.85 | 27.53 | 641.52 | 35.72 |
Embodiment 3
Apparatus of the present invention are on the basis of embodiment 2, opens solenoid valve 12, close single-chip microcontroller 5, remain normal irrigation shape
State.
Surveyed rice yield and greenhouse gas emission are as shown in the table:
Paddy rice yield forming and greenhouse gas emission under 3 normal irrigation of table
| Every cave spike number | Number of productive ear | Setting percentage | Mass of 1000 kernel | Sample prescription yield | CH4Flux |
| Fringe | Wan Sui/mu | % | g | Kg/ mus | mg/m2/h |
| 13 | 27.8 | 0.82 | 25.75 | 631.4 | 52.41 |
It can be seen that control irrigation is smaller than the rice field greenhouse gas emissions of normal irrigation, and yield is not much different, and adds
The irrigation of gas control system significantly reduces rice field greenhouse gases especially CH4Discharge, and yield also improves.
Claims (10)
1. a kind of controlled with aerating irrigates the device for reducing rice field greenhouse gas emission, including irrigation rig, aerator, gas
Pump, single-chip microcontroller and lysimeter, it is characterised in that: the irrigation rig includes water inlet, casing and water outlet, and the water outlet is logical
Piping is communicated with the inside of lysimeter, and the inside of the lysimeter is popped one's head in filled with FDR is embedded in soil and soil, described
Single-chip microcontroller is popped one's head in by conducting wire with FDR and air pump is connected, and the air pump is communicated by conduit with the air inlet of aerator, described
The outlet of aerator is communicated with casing.
2. a kind of controlled with aerating according to claim 1 irrigates the device for reducing rice field greenhouse gas emission, feature
Be: described sleeve pipe is also successively arranged air deflector, injector, flow spoiler and disperser along water (flow) direction, the aerator
Outlet is communicated with the casing between air deflector and injector.
3. a kind of controlled with aerating according to claim 1 irrigates the device for reducing rice field greenhouse gas emission, feature
Be: the water outlet of the irrigation rig is equipped with the solenoid valve that control water flow is closed, and the solenoid valve passes through conducting wire and monolithic
Machine is connected.
4. a kind of controlled with aerating according to claim 1 irrigates the device for reducing rice field greenhouse gas emission, feature
Be: kind is implanted with rice at the top of the soil of the lysimeter, is filled with clinoptilolite in soil, the particle size range of clinoptilolite is
40~80 mesh.
5. a kind of controlled with aerating according to claim 1 irrigates the device for reducing rice field greenhouse gas emission, feature
Be: the top of the lysimeter is equipped with extension type static chamber, is equipped in the extension type static chamber for measuring rice field
The greenhouse gases sensor of emission greenhouse gas concentration, the greenhouse gases sensor are connected by conducting wire with single-chip microcontroller.
6. a kind of controlled with aerating according to claim 5 irrigates the device for reducing rice field greenhouse gas emission, feature
Be: the greenhouse gases sensor can be CH4Concentration sensor, N2O concentration sensor and CO2One in concentration sensor
Kind, two or three.
7. a kind of controlled with aerating according to claim 1 irrigates the device for reducing rice field greenhouse gas emission, feature
Be: the aerator is microbubble generator, and the air pump selects one of FAA8006 or PM8001.
8. a kind of control the method irrigated and reduce rice field greenhouse gas emission with aerating, which comprises the steps of:
(1) before rice growing, the clinoptilolite of 40~80 mesh is mixed with base manure, and turns over 0~10cm soil horizon；
(2) the soil moisture content data of rice each breeding time are preset in single-chip microcontroller, and FDR probe prison in real time is controlled by single-chip microcontroller
It surveys paddy soil moisture content and regulates and controls；When the field moisture content that FDR probe measures rice field is lower than the soil of default rice each breeding time
When earth moisture content lower limit, single-chip microcontroller control is synchronous to open air pump and solenoid valve, carries out aerating and pours water；When FDR probe measures rice field
Field moisture content when being higher than the soil moisture content upper limit of default rice each breeding time, stop pouring water；
(3) after the completion of pouring water, extension type static chamber is closed, and greenhouse gases sensor detection rice field greenhouse gas concentration is simultaneously fed back
To single-chip microcontroller, judge whether to need oxygenation according to the greenhouse gas concentration of rice field greenhouse gas concentration and default rice, if meeting
It is required that then air pump is closed, stops aerating, otherwise continue aerating.
9. a kind of method for controlling irrigation reduction rice field greenhouse gas emission with aerating according to claim 8, feature
It is: in the step (2), presets the soil moisture content of rice each breeding time specifically: the water quantity holding soil of rice striking root phase
The shallow water layer of more than earth layer 10~30mm, rice plant of tillering stage soil moisture content are 60~70%；Rice jointing-booting stage soil
Moisture content is 70~80%；Rice Heading florescence soil moisture content is 78~80%, and rice milky ripe stage soil moisture content is 70
~72%, the rice stage of yellow ripeness is without pouring water.
10. a kind of method for controlling irrigation reduction rice field greenhouse gas emission with aerating according to claim 8, feature
It is: in the step (3), presets the greenhouse gas concentration of rice specifically: CH4≤20mgCH4/(m2H), N2O≤500μ
gN2O/(m2H), CO2≤20mg CO2/(m2·h)。
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| CN112913642A (en) * | 2021-03-31 | 2021-06-08 | 衡水中广农业科技有限公司 | Water-saving oxygenation irrigation method |
| CN113297536A (en) * | 2021-07-27 | 2021-08-24 | 中国农业科学院农业环境与可持续发展研究所 | Method for evaluating applicability of AWD (agricultural microwave sludge drying) rice carbon emission reduction technology |
| CN114020080A (en) * | 2021-11-04 | 2022-02-08 | 河海大学 | Micro-nano air entrainment-based automatic rice field irrigation and drainage system and method |
| CN115991543A (en) * | 2022-11-11 | 2023-04-21 | 浙江大学 | Wetland environment methane emission reduction method based on artificial ventilation tissue |
| CN116338112A (en) * | 2023-05-31 | 2023-06-27 | 东北农业大学 | Rice field methane emission detection control device and method |
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