CN1361420A - Initial-state in-situ soil solution ion measuring system - Google Patents
Initial-state in-situ soil solution ion measuring system Download PDFInfo
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- CN1361420A CN1361420A CN 00120623 CN00120623A CN1361420A CN 1361420 A CN1361420 A CN 1361420A CN 00120623 CN00120623 CN 00120623 CN 00120623 A CN00120623 A CN 00120623A CN 1361420 A CN1361420 A CN 1361420A
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Abstract
The present invention relates to the negative pressure pumping of soil solution and the measuring of ionic electrode to soil solution ions. The present invention is featured by that the electrode lead of ionometer connected ion selecting electrode is sealed in porous pottery clay cup in the bottom of probe set in soil. The porous pottery clay cup is connected to an automatic controller via liquid guide pipe. The probe of the present invention may be inserted directly into different depth of soil for measuring without need of sampling and this initial-state in-situ measurement has no disturbance and destroy to soil.
Description
The present invention is a kind of initial-state in-situ soil solution ion measuring system, relates to adopting principle of negative pressure and ion selecting electrode determining principle to soil liquid ion determination technical field.
Soil liquid ion is plant draws nutrient and soil element migration from soil a main matter form.Soil liquid intermediate ion kind is relevant with soil type with concentration, and is simultaneously relevant with fertilising, irrigation, soil moisture, the soil moisture, soil microorganism, soil enzyme activities, soil oxidation-reduction current potential etc., changes with the variation of soil environment situation.Therefore, soil liquid ion is measured the full dose of relative soil element and measured, validity is measured more can directly show soil material conversion and supply capacity and environmental quality.In research on soil fertility, crop fertilization, aspects such as environmental protection have extremely important scientific meaning and production meaning.
Ortho states-the in-site detecting of soil liquid ion is meant does not take pedotheque when measuring soil liquid ion, arbitrary section level of the tested soil body is implemented in the body METHOD FOR CONTINUOUS DETERMINATION.Also there be not a kind of method and the technology that can carry out ortho states-in-site detecting to soil liquid ion at present both at home and abroad.The former Russian scholar Э А Б И Ш О Ф in 1978 etc. once proposed to extract from soil with principle of negative pressure the method for solution, but handled and method for measuring after not having the soil liquid to extract out.To soil liquid ion determination, still need the soil liquid that extracts is measured outside soil mass, do not overcome environmental change brings influence to soil liquid ion weakness.Simultaneously, concerning upland soil, because soil moisture content is few, obtain to satisfy the often accumulation of needs certain hour of soil liquid amount that analyzed in vitro is measured, the result who is measured can not reflect instantaneous value, and can only represent mean value in a period of time, be used for carrying out dynamic measurement and have certain limitation.Therefore, this method fails to be used widely for a long time.The eighties middle and later periods, some scholars attempt to measure with direct the contact with soil of ion electrode, because dried more its of factor of scratching measured the also very big difficulty of existence.
The objective of the invention is to avoid above-mentioned the deficiencies in the prior art and a kind of initial-state in-situ soil solution ion measuring system is provided.
Purpose of the present invention can reach by following measure: the ion-selective electrode of ionometer is sealed in the micropore potter's clay cup bottom the probe pipe that places soil by contact conductor, and the negative pressure automaton is communicated with micropore potter's clay cup by catheter.
Purpose of the present invention can also reach by following measure: the micropore potter's clay cup that catheter one end inserts the probe Guan Yuqi bottom that places soil is communicated with, be sealed in the receiver through the vacuum valve other end, the exhaust tube that connects solenoid vacuum valve and vacuum pump is sealed in the receiver.
Purpose of the present invention can also reach by following measure: the negative pressure automaton that the indication of band pressure is arranged on the receiver and regulate.
Accompanying drawing is measuring principle of the present invention and structural drawing.
The present invention is further detailed in conjunction with the accompanying drawings below.
As shown in the figure: the ion-selective electrode (2) that ionometer (6) is connected by contact conductor (5) is sealed in the micropore potter's clay cup (1) of probe pipe (4) bottom that places soil; An end that connects the catheter (7) of vacuum valve (8) inserts the probe pipe (4) that places soil and is communicated with the micropore potter's clay cup (1) of its bottom, and the other end is sealed in the receiver (9) by sealing-plug (10); The exhaust tube (12) that connects solenoid vacuum valve (13) and vacuum pump (14) is sealed in the receiver (9) by sealing-plug (10); The pressure tube of the negative pressure automaton (11) that constitutes by the electric contact vacuum meter or by negative pressure transducer is sealed in the receiver (9) by sealing-plug (10); Probe pipe (4) and micropore potter's clay cup (1) seal by sealing-plug (3).
During use, start vacuum pump (14), form negative pressure in receiver (9), catheter (7) and the micropore potter's clay cup (1), the soil liquid passes micropore potter's clay wall of cup and enters in the micropore potter's clay cup (1) under negative pressure; Interior with being placed in micropore potter's clay cup (1) the at once ion-selective electrode (2) of the soil liquid that enters in the micropore potter's clay cup contacts, ion-selective electrode (2) produces a current potential under the effect of soil liquid intermediate ion, this potential value is directly shown by ionometer (6).The concentration difference of soil liquid intermediate ion, the current potential that ion-selective electrode produced is also inequality, and the displayed value of ionometer (6) has to a certain degree reflected the ion concentration in the soil liquid.Change the kind of measuring ion electrode, can realize mensuration different ions.When the soil liquid that accumulates in the receiver surpasses the permission storage capacity, close the vacuum valve (8) on the catheter (7), opening the sealing-plug (10) of receiver (9) can topple over the soil liquid in the receiver to fall, and treats that receiver reseals back unlatching vacuum valve system and can work on.The effect of negative pressure automaton (11) is the height of negative pressure value in the automatic control system.After people manually are provided with a negative pressure value according to soil moisture content, negative pressure automaton (11) controls the startup of vacuum pump (14) automatically and cuts out, to guarantee that the soil liquid slowly flows out by certain flow rate, thereby bring in constant renewal in the soil liquid in the micropore potter's clay cup, the determined soil liquid in the micropore potter's clay wall of cup is remained and outer consistent of wall.Solenoid vacuum valve (13) is open-minded when vacuum pump (14) starts, and closes when vacuum pump shuts down.Its effect is after vacuum pump quits work, and intrasystem negative pressure can be maintained, and prevents that simultaneously pumping fluid from blowing back into receiver when vacuum pump quits work, and can run well to keep vacuum pump.
The working pressure range of this mensuration system is 0----0.08MPa.
The present invention compares prior art and has following advantage:
1. the present invention can manage probe and be equipped with the micropore pottery of ion-selective electrode as required The soil cup directly inserts or draws to bore and insert different depth soil, by the negative pressure realization soil of automatic control The automatic mensuration of earth solion. Do not take a sample during mensuration, can avoid taking a sample the dried of the soil body scratched and broken Bad, avoid soil sample to leave behind the soil body because environmental evolution exerts an influence to ionic forms and quantity, protect Holding ortho states measures. Its measurement result is more realistic.
2. can keep same level and depth location to implement the continuous at body of soil liquid ion Measure-be in-site detecting. The height that can keep in the mensuration locating overlaps its measurement result The dynamic change characterization of reflect soil solion in soil truly.
3. the present invention is simple in structure, and is reasonable in design, easy and simple to handle, is applicable to various soil The mensuration of solion.
Claims (3)
1. the initial-state in-situ soil solution ion measuring system that adopts principle of negative pressure and ion electrode measuring principle to measure, it is characterized in that ion-selective electrode (2) that ionometer (6) is connected by contact conductor (5) is sealed in the micropore potter's clay cup (1) of probe pipe (4) bottom that places soil, negative pressure automaton (11) is communicated with micropore potter's clay cup (1) by catheter (7).
2. initial-state in-situ soil solution ion measuring system as claimed in claim 1, its feature is inserted the probe pipe (4) that places soil and is communicated with its bottom micropore potter's clay cup (1) at catheter (7) one ends, be sealed in the receiver (9) through vacuum valve (8) other end; Exhaust tube (12) one ends are sealed in the receiver (9), connect vacuum pump (14) through solenoid vacuum valve (13) other end.
3. initial-state in-situ soil solution ion measuring system as claimed in claim 2 is characterized in that the negative pressure automaton (11) that the negative pressure indication is arranged on the receiver (9) and regulate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00120623 CN1361420A (en) | 2000-12-26 | 2000-12-26 | Initial-state in-situ soil solution ion measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00120623 CN1361420A (en) | 2000-12-26 | 2000-12-26 | Initial-state in-situ soil solution ion measuring system |
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| CN1361420A true CN1361420A (en) | 2002-07-31 |
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| CN 00120623 Pending CN1361420A (en) | 2000-12-26 | 2000-12-26 | Initial-state in-situ soil solution ion measuring system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100478668C (en) * | 2005-07-07 | 2009-04-15 | 中国科学院广州地球化学研究所 | Sediment interstitial water in-situ sampling method and apparatus |
| CN100514049C (en) * | 2007-02-14 | 2009-07-15 | 中国科学院南京土壤研究所 | Original position soil salt content sensing transducer |
| CN100520384C (en) * | 2007-02-14 | 2009-07-29 | 中国科学院南京土壤研究所 | Four-electrode original position soil salt content measuring method |
| CN101915690A (en) * | 2010-08-26 | 2010-12-15 | 中国科学院东北地理与农业生态研究所 | Soil column freeze-thaw simulation device and soluble component extraction method based thereon |
| CN101915682A (en) * | 2010-07-30 | 2010-12-15 | 中国科学院东北地理与农业生态研究所 | Soil or settlement soluble iron in-situ sampling device and in-situ sampling and testing method thereof |
| CN104884947A (en) * | 2012-12-21 | 2015-09-02 | 植物生物科学有限公司 | Soil chemistry sensor |
| CN106525501A (en) * | 2016-11-16 | 2017-03-22 | 江苏智石科技有限公司 | Removable soil solution extraction device |
| US9797814B2 (en) | 2011-06-12 | 2017-10-24 | Adi Mottes | Probe for in situ monitoring the electrical conductivity of soil solutions |
| CN108226262A (en) * | 2018-01-31 | 2018-06-29 | 中国地质大学（武汉） | The original position and dystopy detection device of detection different depth soil pH and Eh and method |
| CN110794009A (en) * | 2019-11-13 | 2020-02-14 | 北京农业智能装备技术研究中心 | In-situ monitoring system and method for soil available nutrients |
| CN112146937A (en) * | 2020-10-20 | 2020-12-29 | 沈阳农业大学 | A device that is used for paddy field soil profile multilayer solution automatic acquisition |
-
2000
- 2000-12-26 CN CN 00120623 patent/CN1361420A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100478668C (en) * | 2005-07-07 | 2009-04-15 | 中国科学院广州地球化学研究所 | Sediment interstitial water in-situ sampling method and apparatus |
| CN100514049C (en) * | 2007-02-14 | 2009-07-15 | 中国科学院南京土壤研究所 | Original position soil salt content sensing transducer |
| CN100520384C (en) * | 2007-02-14 | 2009-07-29 | 中国科学院南京土壤研究所 | Four-electrode original position soil salt content measuring method |
| CN101915682A (en) * | 2010-07-30 | 2010-12-15 | 中国科学院东北地理与农业生态研究所 | Soil or settlement soluble iron in-situ sampling device and in-situ sampling and testing method thereof |
| CN101915690A (en) * | 2010-08-26 | 2010-12-15 | 中国科学院东北地理与农业生态研究所 | Soil column freeze-thaw simulation device and soluble component extraction method based thereon |
| CN101915690B (en) * | 2010-08-26 | 2012-05-30 | 中国科学院东北地理与农业生态研究所 | Soil column freeze-thaw simulation device with unpliant ceramic cup during freeze-thaw process |
| US9797814B2 (en) | 2011-06-12 | 2017-10-24 | Adi Mottes | Probe for in situ monitoring the electrical conductivity of soil solutions |
| CN104884947A (en) * | 2012-12-21 | 2015-09-02 | 植物生物科学有限公司 | Soil chemistry sensor |
| CN104884947B (en) * | 2012-12-21 | 2018-01-09 | 植物生物科学有限公司 | Soil chemistry sensor |
| CN106525501A (en) * | 2016-11-16 | 2017-03-22 | 江苏智石科技有限公司 | Removable soil solution extraction device |
| CN108226262A (en) * | 2018-01-31 | 2018-06-29 | 中国地质大学（武汉） | The original position and dystopy detection device of detection different depth soil pH and Eh and method |
| CN110794009A (en) * | 2019-11-13 | 2020-02-14 | 北京农业智能装备技术研究中心 | In-situ monitoring system and method for soil available nutrients |
| CN112146937A (en) * | 2020-10-20 | 2020-12-29 | 沈阳农业大学 | A device that is used for paddy field soil profile multilayer solution automatic acquisition |
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