CN102297817A - Measuring method and device for determining relationship between plant transpiration and leaf area - Google Patents
Measuring method and device for determining relationship between plant transpiration and leaf area Download PDFInfo
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- CN102297817A CN102297817A CN2011102059241A CN201110205924A CN102297817A CN 102297817 A CN102297817 A CN 102297817A CN 2011102059241 A CN2011102059241 A CN 2011102059241A CN 201110205924 A CN201110205924 A CN 201110205924A CN 102297817 A CN102297817 A CN 102297817A
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Abstract
The invention relates to a measuring method for determining the relationship between plant transpiration and leaf area, comprising the following steps of: sowing a plant inside an inner cylinder with the plant being corresponding to a seedling emergence hole and a seedling emergence slit, and adjusting moisture to a soil water content until there is no stress for the plant growth; providing an outer cylinder with soil and moisture which are consistent with those in the inner cylinder, and measuring the quality difference of the inner cylinder and the variation of the plant leaf area so as to obtain the relationship between the plant transpiration amount and the plant leaf area. According to the method, a device which can be used comprises the inner cylinder, the outer cylinder and a feed pipe, wherein the inner cylinder is a cylindrical shell with a lid and with the bottom sealed; the lid is provided with the seedling emergence hole; the outer cylinder contains two internal-and-external layered spaces and the seedling emergence slit; the inner cylinder is correspondingly arranged inside the internal space; the seedling emergence slit is corresponding to the seedling emergence hole of the inner cylinder; and the feed pipe is connected to the external space of the outer cylinder. The device provided by the invention has a reasonable structure and can be used to effectively reduce or eliminate the interference of environmental conditions which influence the measuring result. The measuring device is simple and easy to operate with accurate measuring results.
Description
Technical field
The invention belongs to water balance observation technology field, farmland, be specifically related to a kind of measuring method and device of measuring plant transpiration and leaf area relation.
Background technology
Plant transpiration is meant the plant surface of moisture from living, and mainly is leaf, is lost to process in the atmosphere with the water vapour state.In the farmland, plant transpiration and soil evaporation have constituted field evapotranspiration jointly.
It is generally acknowledged that soil evaporation belongs to invalid evaporation, and plant transpiration and plant leaf area there are confidential relation, and influence the biological yield of plant.The field evapotranspiration amount can be measured by equipment such as lysimeters, but differentiation soil evaporation and plant transpiration then are technical barriers.
There is the scholar to use potted plant or incubator, use film, lid, stalk or sandstone overburden soil face, suppress soil evaporation, because the growth quality of plant is lower than 5/1000ths of plant transpiration amount, therefore, people use water balance method to measure plant transpiration usually, but potted plant and covering can cause plant evaporation environment and field actual conditions inconsistent, especially the thermogenic action of solar radiation direct projection to the basin body, or shine reflex on the coverture, and suppress the factors such as temperature rising that soil evaporation brings, must more or less influence measuring accuracy.
Summary of the invention
The technical matters that the present invention mainly solves provides a kind of measuring method of utilizing the device of said determination plant transpiration and leaf area relation, and this method is simple, and measurement result is accurate.
Another technical matters that the present invention will solve provides the device of measuring plant transpiration and leaf area relation, and this apparatus structure is reasonable, can effectively reduce or eliminate the changes in environmental conditions that influences measurement result.
For reaching described purpose, the technical solution used in the present invention:
A kind of measuring method of utilizing the device of said determination plant transpiration and leaf area relation is sowed plant in the described inner core, and this plant correspondence the emerge hole and the slit of emerging are regulated moisture and grown to plant and do not produce soil moisture content when coercing; Soil and the moisture consistent with the inner core environment are set in the described urceolus, and the variation of the of poor quality and plant leaf area by the measurement inner core obtains the relation of plant transpiration amount and plant leaf area.
Preferably, may further comprise the steps:
Use feed pipe to supply water, make its water cut in evaporation process consistent with the inner core soil conservation to urceolus;
Measure the variation of plant leaf area, and according to step
The rising value that records obtains the relation of plant transpiration amount and plant leaf area.
Further, step
Middle surface of using foam to block the growth of slit non-plant suppresses native face evaporation as far as possible, makes it near " zero ".Inner/outer tube is used, and can measure the plant transpiration amount.
A kind of device of measuring plant transpiration and leaf area relation comprises inner core, urceolus and feed pipe,
Described inner core is back cover, the cylindrical shell of lid is arranged that described covering is provided with the hole of emerging;
Described urceolus comprises inside and outside two sheaf spaces and the slit of emerging, and what described inner core mated is arranged in the inner space; The hole of emerging of the described corresponding inner core of slit of emerging;
Described feed pipe is connected with outer space at urceolus.
Described outer wound packages soil keeps soil moisture content by feed pipe, is used to keep evaporitic environment; The slit of emerging is arranged at top, and the plant of inner core is grown by slit.Described inner core is used for plant transpiration and measures.Inner core is the cylinder that back cover has lid, and cylinder top top cover can take off, and has covered slit, can be for the plant growth.
Preferably, described urceolus is formed by connecting by centrosymmetric two semicircular ring tubes, and the inwall of described semicircular ring tube is provided with upper groove and the low groove that communicates, and two low grooves of described two semicircular ring tubes cooperate and are inner space, and two upper grooves fit in the slit of emerging.
Further, the described two semicircular ring tubes cooperation of pegging graft mutually.
The present invention has the following advantages:
The present invention measures the plant transpiration amount, guarantees that as far as possible the measurement environment condition is consistent with actual conditions, by the urceolus identical with plant growth environment is set, suppresses the evaporation of inner core soil face as far as possible, makes it near " zero ".So set up the relation of plant transpiration amount and its leaf area.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of urceolus;
Fig. 3 is the half side structural representation of Fig. 2;
Fig. 4 is the structural representation of inner core.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
Embodiment
Shown in Fig. 1,2,3,4, present embodiment comprises inner core 1, urceolus 2 and feed pipe 3, and described inner core 1 is back cover, is provided with and covers 4 cylindrical shell that described lid 4 is provided with the hole 5 of emerging; Described urceolus 2 is pegged graft mutually to cooperate by centrosymmetric two semicircular ring tubes and is formed, and the inwall of described semicircular ring tube is provided with upper groove 21 and the low groove 22 that communicates, and two low grooves 22 of described two semicircular ring tubes cooperate and are inner space, and this inner space is placed inner core 1; Two upper grooves fit in the slit 6 of emerging, described in 1 hole 5 correspondences of the emerging slit 6 of emerging, this emerge hole 5 and the slit 6 of emerging can make plant in the inner core 1 by growth.Described urceolus 1 dress soil, described feed pipe 3 is connected with outer space at urceolus 1, by feed pipe 3 maintenance urceolus 2 soil moisture contents, is used to keep evaporitic environment.
During measurement,
Use feed pipe 3 to supply water for urceolus 2, make its water cut in evaporation process consistent, be used to keep evaporitic environment with inner core 1 soil conservation;
Measure the variation of plant leaf area, and according to step
The rising value that records can be in the hope of the relation of plant transpiration amount and plant leaf area.
Obviously, the above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be qualification to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here can't give exhaustive to all embodiments.Everyly belong to the row that conspicuous variation that technical scheme of the present invention extends out or change still are in protection scope of the present invention.
Claims (6)
1. a measuring method of measuring plant transpiration and leaf area relation is characterized in that, sows plant in the described inner core, and this plant correspondence the emerge hole and the slit of emerging are regulated moisture and grown to plant and do not produce soil moisture content when coercing; Soil and the moisture consistent with the inner core environment are set in the described urceolus, and the variation of the of poor quality and plant leaf area by the measurement inner core draws the relation of plant transpiration amount and plant leaf area.
2. the measuring method of mensuration plant transpiration according to claim 1 and leaf area relation is characterized in that, may further comprise the steps:
Urceolus is filled soil, and it is consistent with inner core to regulate moisture;
3. the measuring method of mensuration plant transpiration according to claim 2 and leaf area relation is characterized in that, described step
Middle use foam fine grained blocks the surface of the hole non-plant growth of emerging.
4. the used device of measuring method that utilizes described mensuration plant transpiration of above-mentioned arbitrary claim and leaf area relation is characterized in that, comprises inner core, urceolus and feed pipe,
Described inner core is back cover, the cylindrical shell of lid is arranged that described covering is provided with the hole of emerging;
Described urceolus comprises inside and outside two sheaf spaces and the slit of emerging, and what described inner core mated is arranged in the inner space; The hole of emerging of the described corresponding inner core of slit of emerging;
Described feed pipe is connected with outer space at urceolus.
5. the device of mensuration plant transpiration according to claim 4 and leaf area relation, it is characterized in that, described urceolus is formed by connecting by centrosymmetric two semicircular ring tubes, the inwall of described semicircular ring tube is provided with upper groove and the low groove that communicates, two low grooves of described two semicircular ring tubes cooperate and are inner space, and two upper grooves fit in the slit of emerging.
6. the device of mensuration plant transpiration according to claim 5 and leaf area relation is characterized in that, the cooperation of pegging graft mutually of described two semicircular ring tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110205924 CN102297817B (en) | 2011-07-22 | 2011-07-22 | Measuring method and device for determining relationship between plant transpiration and leaf area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110205924 CN102297817B (en) | 2011-07-22 | 2011-07-22 | Measuring method and device for determining relationship between plant transpiration and leaf area |
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| Publication Number | Publication Date |
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| CN102297817A true CN102297817A (en) | 2011-12-28 |
| CN102297817B CN102297817B (en) | 2013-05-29 |
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| CN 201110205924 Expired - Fee Related CN102297817B (en) | 2011-07-22 | 2011-07-22 | Measuring method and device for determining relationship between plant transpiration and leaf area |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837664A (en) * | 2014-02-28 | 2014-06-04 | 西北农林科技大学 | Simple determination method of soil water content of natural grassland in loess areas |
| CN111413472A (en) * | 2020-04-24 | 2020-07-14 | 四川大学 | Method for measuring transpiration rate of fruit tree canopy structure |
| CN112697638A (en) * | 2021-01-11 | 2021-04-23 | 贵州省林业科学研究院 | Automatic continuous dynamic measurement system and method for in-situ shrub transpiration amount |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2786613Y (en) * | 2005-04-20 | 2006-06-07 | 中国科学院新疆生态与地理研究所 | Cropper soil surface vaporizing detector |
| CN1818609A (en) * | 2006-03-23 | 2006-08-16 | 中国科学院遗传与发育生物学研究所 | Method and device for determining plant transpiration efficiency precisively |
| JP2009115671A (en) * | 2007-11-08 | 2009-05-28 | National Institute Of Advanced Industrial & Technology | Device for measuring transpiration |
| CN202133597U (en) * | 2011-07-22 | 2012-02-01 | 北京师范大学 | Device for measuring relationship between plant transpiration and leaf area |
-
2011
- 2011-07-22 CN CN 201110205924 patent/CN102297817B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2786613Y (en) * | 2005-04-20 | 2006-06-07 | 中国科学院新疆生态与地理研究所 | Cropper soil surface vaporizing detector |
| CN1818609A (en) * | 2006-03-23 | 2006-08-16 | 中国科学院遗传与发育生物学研究所 | Method and device for determining plant transpiration efficiency precisively |
| JP2009115671A (en) * | 2007-11-08 | 2009-05-28 | National Institute Of Advanced Industrial & Technology | Device for measuring transpiration |
| CN202133597U (en) * | 2011-07-22 | 2012-02-01 | 北京师范大学 | Device for measuring relationship between plant transpiration and leaf area |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837664A (en) * | 2014-02-28 | 2014-06-04 | 西北农林科技大学 | Simple determination method of soil water content of natural grassland in loess areas |
| CN111413472A (en) * | 2020-04-24 | 2020-07-14 | 四川大学 | Method for measuring transpiration rate of fruit tree canopy structure |
| CN112697638A (en) * | 2021-01-11 | 2021-04-23 | 贵州省林业科学研究院 | Automatic continuous dynamic measurement system and method for in-situ shrub transpiration amount |
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| CN102297817B (en) | 2013-05-29 |
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