CN102657040A - Multi-passage closed path type plant root region carbon dioxide (CO2) increasing device - Google Patents
Multi-passage closed path type plant root region carbon dioxide (CO2) increasing device Download PDFInfo
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- CN102657040A CN102657040A CN2012101305084A CN201210130508A CN102657040A CN 102657040 A CN102657040 A CN 102657040A CN 2012101305084 A CN2012101305084 A CN 2012101305084A CN 201210130508 A CN201210130508 A CN 201210130508A CN 102657040 A CN102657040 A CN 102657040A
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Abstract
The invention relates to a multi-passage closed path type plant root region carbon dioxide (CO2) increasing device, which is structurally characterized in that a CO2 gas steel cylinder is connected with parallelly connected three-way valves through a pressure reducing valve and a stainless steel pipe, one end of each valve of the parallelly connected three-way valves is respectively connected with one end of each spiral silicone rubber pipe in parallel connection, and the other ends of the silicone rubber pipes are sealed. The device overcomes the defect that in the study on the CO2 concentration control in the prior art, open path type (FACE) tests are used as major tests, and a large amount of labor, materials and money need to be consumed. The good seepage of the silicone rubber pipes is utilized, the gas concentration of small gas chambers formed near the silicone rubber pipes and the connected CO2 steel cylinder can be identical, the comprehensive research and evaluation on the plant physiology, ecology and biochemistry influence caused by CO2 concentration changes can be conveniently carried out, and good application and development prospects are realized.
Description
Technical field
The present invention relates to a kind of multichannel closed type CO
2Increase device, be particularly useful for rhizosphere district CO
2Change in concentration is to the scientific research test of the influence of plant physiology, ecology and biochemical aspect.
Background technology
The formation of biological soil skinning in dried drought and sand area revegetation process, and in agricultural production soil compaction or ponding, water improper or flood etc. all can cause plant rhizosphere O
2Deficiency and CO
2Excessive concentration.There are some researches show CO in the good soil of ventilating
2Concentration is generally 1000-2000 μ L/L (0.1%-0.2%), CO in the soil of air capacity of soils difference
2Concentration often reaches 5%-10%, sometimes even higher.And CO in the soil
2Excessive concentration, plant roots cellular respiration meeting is suppressed, and reduces root system to nutrient, absorption of water with to the transport capacity of overground part, causes the nutrient content in the unit are cauline leaf to reduce, and growth is suppressed, the generation of phenomenons such as yield and quality reduction.
In recent years, people people have utilized greenhouse, phytotron and open C O
2Concentration increases (FACE) system crop, trees and draft etc. has been made extensive studies, and has obtained the excellent research achievement.But these experimental provisions are all based on CO in the atmosphere
2The variation characteristic of concentration, and to the plant rhizosphere district, i.e. CO in the soil
2The control of concentration is powerless; Moreover the indoor experiment of greenhouse and artificial climate is widely different at aspects such as radiation activity, temperature and humidity and day and night temperature and natural environment, and the control of FACE system expensive and running expense are unfavorable for it to be applied widely.Up to now, a kind ofly be suitable for studying rhizosphere district CO
2Change in concentration does not still have relevant report to section's grinding device of plant influence.
Summary of the invention
In view of above-mentioned, the object of the invention is intended to a kind of multichannel closed type plant rhizosphere district CO
2Increase device, utilize this device research rhizosphere district CO
2Change in concentration is to plant physiology, ecology and biochemical influence.
The objective of the invention is to realize like this:
A kind of multichannel closed type plant rhizosphere district CO
2Increase device, by CO
2Gas bomb (1), pressure-reducing valve (2), three-way valve (3) and helical form silicone tube (4) are formed.CO
2Gas bomb is connected with the three-way valve (3) of stainless-steel pipe (2) with parallel connection through pressure-reducing valve (2); Each valve one end of three-way valve (3) of parallel connection is connected with each helical form silicone tube (4) one end of parallel connection respectively, the other end sealing of helical form silicone tube (4).
The beneficial effect of advantage of the present invention and generation is:
1,On mentality of designing, the present invention is based on the gas penetration theory, utilize the good gas permeability of silicone tube to realize CO
2The purpose that concentration changes was injected CO with direct in the past in air or in the soil
2The method of gas is compared, and has novelty.
,Be embodied on the design of closed type, permeate the CO that discharges through silicone tube
2CO in gas and the soil
2Gas can form a balance in the short period of time, reaches CO
2The purpose that increases.This scheme has made full use of the character of gas diffusion in the soil, only needs the gas outlet sealing with silicone tube in the actual measurement, and helical form is embedded in the plant rhizosphere district and gets final product, and has avoided some open type CO
2The increase system discharges CO continuously
2The huge economic cost that gas brought, and simple and practical.
,Utilize the Parallet three-way valve valve to realize multichannel design, not only satisfy the needs of multi-site determination of the present invention, and economical and practical, easy to carry.
,Experimental provision of the present invention can carry out long run test under the harsh environmental conditions in the open air for a long time, has unserviced advantage, is research CO
2Change in concentration provides a kind of easy scientific research apparatus to the influence of plant, has good application market DEVELOPMENT PROSPECT.
Description of drawings
Fig. 1 is a sketch map of the present invention.
Fig. 2 is one embodiment of the invention sketch map.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further description:
As shown in Figure 1, a kind of multichannel closed type plant rhizosphere district CO
2Increase device, by CO
2Gas bomb 1, pressure-reducing valve 2, three-way valve 4 and helical form silicone tube 5 are formed.CO
2Gas bomb 1 is connected with the three-way valve 4 of stainless-steel pipe 3 with parallel connection through pressure-reducing valve 2, the interface sealing.Three-way valve 4 each valve one end of parallel connection are connected with each helical form silicone tube 5 one end of parallel connection respectively, the other end sealing of helical form silicone tube 5.
The present invention adopts 1000uL/L, the 5000uL/L of Shanghai big wound calibrating gas Co., Ltd configuration, the CO of 10000uL/L
2Gas (remaining air), 18 connect threeway 4 and 1.8m/ silicone tube 5.Select caragana microphylla and two kinds of shrubs of oily wormwood artemisia, flowerpot diameter 26cm, high 35cm are transplanted it in flowerpot in totally 18 strains.
Describe through instantiation and operation below:
Instance 1:As shown in Figure 2, the silicone tube helical form that has connected is embedded in around the root system of caragana microphylla and oily wormwood artemisia in the flowerpot.Measure photosynthetic rate and the transpiration rate of caragana microphylla and oily wormwood artemisia after one week.Utilize the excellent permeability of silicone tube 5, can make the little air chamber and the CO that is connected that form near the silicone tube 5
2Gas concentration is consistent in the steel cylinder, and stabilization time was at 5-6 hour.
Measured data is as shown in table 1: CO
2When concentration was increased to 5000uL/L from 1000uL/L, photosynthetic rate of caragana microphylla and oily wormwood artemisia and transpiration rate also increased accordingly, work as CO
2When concentration continued to be increased to 10000uL/L, photosynthetic rate of caragana microphylla and oily wormwood artemisia and transpiration rate but showed downward trend.There is a CO the righttest in the rhizosphere district that caragana microphylla and oily wormwood artemisia are described
2The gas concentration scope.Because CO
2Concentration suitably increases, the CO that root system absorbs
2Can reduce cytoplasmic pH value, discharge H
+, make H in the cell wall
+Concentration improves, and the enzyme of active cell wall is removed the connection of polymer in the cell wall, and then makes softening of the cell wall lax, and turgescence descends, thereby promotes the cell suction to expand, and accelerates growing of plant.In addition, root system of plant absorbs fixing CO
2Be not merely energy metabolism substrate is provided, and be NH
4 +Assimilation and amino acid whose biosynthesis carbon skeleton is provided, help the carrying out of photosynthetic transpiration.And work as CO
2When concentration continue to increase, then can influence the aerobic respiration of root system of plant, suppress growing of root system, thereby hinder absorption, utilization and the metabolism of root system nutrition material, finally limit the photosynthetic transpiration of overground part blade and grow.Through the research of this instance, we can explain physiological ecological adaptive strategy and succession of community rule that some area, arid desert vegetation are caused when changing in microhabitat, the face of land.
Table 1 caragana microphylla and the oily wormwood artemisia rhizosphere different CO in district
2Photosynthetic rate and transpiration rate under the concentration
Instance 2:The CO of the 1000uL/L of employing Shanghai big wound calibrating gas Co., Ltd configuration, 5000uL/L, 10000uL/L
2Gas (remaining air), 9 connect three-way valve 4 and 1.8m/ silicone tube 5.Select 9 in flowerpot, flowerpot diameter 26cm, high 35cm.Fill soil in the flowerpot, the silicone tube helical form that has connected is embedded in the flowerpot.Sprinkle water at dusk every day to keep ground moistening.Regularly observe, divide kind of a record seedling quantity, carry out CO
2Change in concentration is to the research of soil seed bank, soil seed pool, and concrete measured data is as shown in the table: CO
2When concentration was increased to 5000uL/L from 1000uL/L, seedling quantity also increased accordingly, but CO
2When concentration continued to be increased to 10000uL/L, seedling quantity but showed downward trend.The same with instance 1, explain in soil seed bank, soil seed pool, to have a CO the righttest
2The gas concentration scope.Suitable CO
2Concentration can increase plant seed to nutrient absorbing in the soil, and works as CO
2During excessive concentration, can suppress the sprouting of seed equally.Often want in the real life crop in the farmland is hoed up weeds, loosens the soil to wait and improve output and also all be based on this.
The sprouting amount of eremophytes on unit are soil under the different co2 concentration of table 2
| CO 2Concentration | Seedling quantity is (individual/m 2） |
| Contrast (is not added CO 2） | 2251 |
| 1000uL/L | 2578 |
| 5000uL/L | 4325 |
| 10000uL/L | 2012 |
In the process of the test, CO
2The length of the number of the concentration of gas, three-way valve 3 and silicone tube 4 all can be confirmed by actual needs.
Claims (1)
1. multichannel closed type plant rhizosphere district CO
2Increase device, by CO
2Gas bomb (1), pressure-reducing valve (2), three-way valve (3) and helical form silicone tube (4) are formed, and it is characterized in that CO
2Gas bomb is connected with the three-way valve (3) of stainless-steel pipe (2) with parallel connection through pressure-reducing valve (2); Each valve one end of three-way valve (3) of parallel connection is connected with each helical form silicone tube (4) one end of parallel connection respectively, the other end sealing of helical form silicone tube (4).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101305084A CN102657040A (en) | 2012-04-28 | 2012-04-28 | Multi-passage closed path type plant root region carbon dioxide (CO2) increasing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101305084A CN102657040A (en) | 2012-04-28 | 2012-04-28 | Multi-passage closed path type plant root region carbon dioxide (CO2) increasing device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1632521A (en) * | 2004-12-14 | 2005-06-29 | 武汉理工大学 | Multifunctional environmental simulator |
| CN101149365A (en) * | 2007-10-12 | 2008-03-26 | 南京大学 | Photocatalytic material photocatalytic activity characterization method and device |
| CN101953291A (en) * | 2010-08-18 | 2011-01-26 | 沈阳农业大学 | Rhizospheric gaseous environment culture system |
-
2012
- 2012-04-28 CN CN2012101305084A patent/CN102657040A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1632521A (en) * | 2004-12-14 | 2005-06-29 | 武汉理工大学 | Multifunctional environmental simulator |
| CN101149365A (en) * | 2007-10-12 | 2008-03-26 | 南京大学 | Photocatalytic material photocatalytic activity characterization method and device |
| CN101953291A (en) * | 2010-08-18 | 2011-01-26 | 沈阳农业大学 | Rhizospheric gaseous environment culture system |
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Application publication date: 20120912 |