CN101385433A - Groundwater buried depth abductive technique of desert plant seedling root system growth - Google Patents
Groundwater buried depth abductive technique of desert plant seedling root system growth Download PDFInfo
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- CN101385433A CN101385433A CNA2008100729567A CN200810072956A CN101385433A CN 101385433 A CN101385433 A CN 101385433A CN A2008100729567 A CNA2008100729567 A CN A2008100729567A CN 200810072956 A CN200810072956 A CN 200810072956A CN 101385433 A CN101385433 A CN 101385433A
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Abstract
The present invention provides a buried depth of phreatic water level inducement technical method for the root system growth of the young seedling of desert plants. A constructed netting testing tank consists of tank wall, column piers, a steel wire netting and a water injection pipe and is filled with stones and earthwork, wherein, the tank wall is ensured to be watertight; the bottom of the tank is distributed with the column piers to ensure that the ground water can flow; the upside of the column piers is laid with the steel wire netting; the upside of the steel wire netting is laid with the stones firstly and then is filled with the earthwork layer by layer; a ground water table control testing area which has the thicknesses of earth layers of 100cm, 150cm, 200cm, 250cm and 300cm respectively is arranged to ensure that the ground water table is always kept at 45 to 55cm. The technical method testifies the relation between the working depth of the vertical root of the young seedling and the growth speed of the vertical root under the condition of different buried depths of phreatic water level, testifies the changing characteristic of the root system state of the young seedling along with the change of the ground water level and the water content of soil, testifies the distribution rule of the quality and the surface area of the root system of the young seedling in soil space and testifies the biomass allocation trend of the young seedling under the condition of different buried depths of phreatic water level. The technical method has reasonable design and strong operability. The testing tank can be molded by casting concrete or be made by laying with waterproof material in a concrete-brick structure.
Description
Technical field
The present invention relates to the ecological research of root system of plant, the buried depth technology of particularly diving under water especially adapts to the diving buried depth inductive technology method that a kind of eremophytes seedlings root is grown.
Background technology
Along with going deep into of ecological exploration and research, the ecologist recognizes that more and more consumingly in the research of ecosystem structure, function and process, uncertain key element is exactly a root system, because the hysteresis of root system research has restricted the expansion to the research of ecosystem theory and practice.As everyone knows, root system is the critical function organ of plant absorbing moisture and nutrient, the key character that plants in arid region forms in the process of conforming is exactly to have huge root system, because root growth is underground, study the comparison difficulty, so still belong to blank for the root system research of most of plant.The at present existing patent No. is the evaluation method of 2006101340701 root depth property and 2005800497884 root system hydraulic lift action measuring, has all disclosed the difference of this research and the difference of technical method.
Camel thorn is as important check winds and fix drifting sand plant and natural high quality forage on the edge desert-transition zone between oasis of Takla Makan Desert south; because the dual-pressure of nature and mankind's activity; the growth of camel thorn is presenting the trend of decline, and therefore the protection to camel thorn has become one of great strategic measure of dry ecological environment construction with restoration and reconstruction.Yet, the research of carrying out camel thorn root system ecological characteristics under natural environmental condition is very difficult, because the under ground portion of a strain camel thorn plants is surrounded by the soil of 100-500 cubic meter, its root can be pricked the depths of 12 meters even 30 meters, and test can only be test material with the seedling.But how to form different underground latent water buried depths, and its groundwater level is dynamically controlled, become the test key of success again, the demand that the present invention just is being based on these problem explorations and production practices is set out and is launched.
Design of the present invention is exactly that simulation structure one overlaps not only science but also practical technological facilities and method, the test effect that when natural conditions and human intervention all reach harmonious state, is produced, successfully studied the growth rhythm of eremophytes seedlings root and distribution dynamic and with the relation of diving buried depth, adopt different underground latent water buried depths and its groundwater level is dynamically controlled, hold the key link of test, obtained valuable science data and application technology.
Summary of the invention
The objective of the invention is to: the diving buried depth inductive technology method of a kind of eremophytes seedlings root growth is provided, and utilizes this technical method to study to the growth rhythm of eremophytes seedlings root and distribution dynamic and with the relation of diving buried depth.Adopt different underground latent water buried depths and its groundwater level is dynamically controlled, hold the key link of test, obtained valuable science data.This technical method is reasonable in design, workable, and has verified and recovered the possibility of natural, ecological and the novelty of scientific practice.
The object of the present invention is achieved like this: the constructed net sheet of diving buried depth inductive technology method test tank, and by pool wall, stub, steel wire, water injection pipe is formed and is added and fill the stone and the earthwork; Wherein pool wall thickness 25-35cm guarantees waterproof; The pond base fabric is established and highly is the stub of 45-55cm, to guarantee phreatic flowing; The top laying aperture of stub is the steel wire of 1-2cm; The top of steel wire laid stone earlier and successively inserted the earthwork, and when inserting 20-30cm, it is steady and sure to need machinery to press, and adds and buries to ground level; Monitoring test: net sheet test tank is provided with the phreatic table control test region that soil thickness is respectively 100cm, 150cm, 200cm, 250cm and 300cm, in establish the water injection pipe that underground water is connected, in time replenish underground water, make phreatic table remain at 45-55cm; Seedling is replenished through seed breeding, sowing, nursery stock management and diving, and soil keeps nature substantially.
Above-mentioned technical method, laying the stone diameter is 2.1-3.0cm, thickness 5-6cm; For preventing stone and soil particle landing entry, handstone is laid on.
Above-mentioned technical method, the working depth and the vertical root growth rate of seedling vertical root under the different diving of the checking buried depth conditions quantize the relation of vertical root growth and soil moisture content.
Above-mentioned technical method, checking seedlings root form is the variation characteristic of dive water and soil earth moisture everywhere, promptly has the morphological plasticity of checking seedlings root.
Described technical method verifies that its seedlings root quality and surface area are in the distribution characteristics on the soil space: make up the biomass vertical distribution model under the different buried depth conditions of diving under water simultaneously.
Described technical method, the biomass allocation of checking seedling under difference diving buried depth condition, promptly root/shoot ratio is dynamic; Seedling is distributed the variation of dealing with underground latent water and soil moisture by the biomass that changes ground/under ground portion.
Described technical method, the making of test tank can adopt concrete casting moulding or cement brick mix structure to lay waterproof material.
Diving buried depth inductive technology method of the present invention, simulated the most real moisture of plant source mode, especially the test facilities and the technical method of underground latent water position control, the experimental observation data that obtain, verified camel thorn seedlings root growth under the different diving buried depth conditions, form, distribute, biomass distributes, the behavioral characteristics of root cap growth, in the hope of promoting to shorten the camel thorn root system and reach and make a breakthrough aspect the theoretical method in phreatic cycle and the technological approaches artificial, purpose is no longer to rely on artificial for existence of after this camel thorn vegetation and growth, but depend on natural resources---underground water, as long as guarantee the stability of local ground watering resource, then existence of camel thorn vegetation and growth stability also are guaranteed in this case.The present invention has the original innovation meaning, shows technological progress.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 buried depth test control facility structural representation of diving under water
Fig. 2 buried depth test control facility structural representation cutaway view of diving under water
Wherein: the 1-pool wall
The 2-stub
The 3-steel wire
The 4-water injection pipe
Fig. 3 Root morphology cross-sectional schematic in the buried depth soil of diving under water
Fig. 4 seedling working depth schematic diagram in the buried depth soil of diving under water
Root system plant division schematic diagram under Fig. 5 a, the 5b different condition
As shown in Figure 1 and Figure 2, diving buried depth inductive technology method constructed net sheet test tank, by pool wall 1, Stub 2, steel wire 3, water injection pipe 4 forms; Wherein pool wall 1 thickness 25-35cm guarantees waterproof; The pond Base fabric is established and highly is the stub 2 of 45-55cm, to guarantee flowing of underground water; The top laying hole of stub 2 The footpath is the steel wire 3 of 1-2cm; The top of steel wire 3 laid earlier stone and successively inserted the earthwork, inserts 20-30 During cm, it is steady and sure to need machinery to press, and adds and buries to ground level; Laying water injection pipe 4 in the pond communicates with underground water.
As shown in Figure 3, the Root morphology cross-sectional schematic in the diving buried depth soil has been verified in whole growth In season, the average speed of growth of camel thorn seedling vertical root is under the different diving Conditions of Buried Depths: 100cm diving buries Dark is 0.3-0.4cm/ days, and 150cm diving buried depth is 0.5-0.6cm/ days, and 200cm diving buried depth is 0.8-0.9cm/ my god, 250cm diving buried depth is 1.0-1.2cm/ days; The camel thorn seedling vertical root speed of growth Present positively related progressive law with the increase of underground latent water buried depth.
As shown in Figure 4, seedling working depth schematic diagram in the diving buried depth soil has been verified different diving buried depths The quantitative relationship of Soil Under Conditions water content and vertical root growth, the camel thorn seedling of 250cm diving buried depth is average Working depth is 160-175cm, and its corresponding soil quality moisture content is 30-35%; 200cm diving buried depth The average working depth of camel thorn seedling is 120-140cm, and its corresponding soil quality moisture content is 25-35%; The average working depth of camel thorn seedling of 150cm diving buried depth is 80-95cm, and its corresponding soil quality is moisture Rate is 25-35%; The average working depth of camel thorn seedling of 100cm diving buried depth is 45-60cm, its correspondence The soil quality moisture content is 25-35%; The soil moisture content that 25-35% is described is that camel thorn seedling vertical root stops The critical value of growth, namely root system stops downward growth.
Shown in Fig. 5 a5b, the root system plant division schematic diagram under the different condition, verified 100cm diving buried depth, The camel thorn seedling of 150cm diving buried depth is at after planting 90-110 days, and root system has occurred all that root system is tillered and water Flat root system plant division phenomenon; The camel thorn seedlings root investigation of 200cm diving buried depth, 250cm diving buried depth Root system plant division phenomenon does not all appear; Wherein, the plant division phenomenon of 150cm diving buried depth is the most obvious; 100cm dives The evaporation of water buried depth causes the soil salinization strongly, and the withered phenomenon of seedling is obvious.
Technical method of the present invention verified the camel thorn seedling on the ground, the growth relationship of underground biomass: 150cm The diving buried depth is conducive to the accumulation of Underground roots biomass most, and 200cm diving buried depth is conducive to ground biomass most Accumulation.
Embodiment
Embodiment
With 120 square metres of test sites, be divided into two groups of test regions; Making up pool wall 1 thickness is that 30 centimetres of fluid-tight bricks mix test tank; Stub 2 is laid in the bottom surface, guaranteeing phreatic flowing, highly is being that the laying aperture is 1 centimetre a high-quality steel wire 3 above 50 centimetres of stubs 2; The laying diameter is 2 centimetres a handstone on steel wire 3, and thickness is 3 centimetres; Re-lay diameter and be 1 centimetre stone on the ground floor stone, thickness is 2 centimetres.Can not fall in the water to guarantee stone; This layer one side will guarantee that underground water can slowly be entered in the soil by adsorption by soil, will guarantee that on the other hand soil particle can not fall into the water, with the phreatic table in the simulating nature environment as much as possible; Successively insert needed test soil on stone, promptly whenever insert 20 centimetres soil, it is steady and sure to compress with mechanical device, up to soil is filled out maintain an equal level with the upper surface of sub-district till.Be provided with 10 separate and fuse again phreatic table control experimental plots so altogether, the diving buried depth is 50 centimetres, soil thickness is respectively 100 centimetres, 150 centimetres, 200 centimetres, 250 centimetres and 300 centimetres, promptly be provided with 100cm, 150cm, 200cm, 250cm, five diving of 300cm buried depth gradient respectively, each diving buried depth gradient is provided with two replicated plots; In each sub-district, be provided with the inlet channel that is connected with underground water, so that the SEA LEVEL VARIATION of 300cm, the 250cm of underground latent water buried depth control pilot system, 200cm, 150cm, five phreatic table gradients of 100cm is carried out every day to be measured, and in time additional underground water, guarantee that phreatic table remains at 50cm and makes the soil and the water surface keep in touch state, to keep the dynamic equilibrium of phreatic table.Replenish through planting seed, nursery stock management and diving, soil returns to the soil natural state substantially.
Embodiment
The root system checking: plantation camel thorn seedling in diving buried depth control test tank, and carry out normal management; After treating that growth of seedling is stable, its leading thread, plant height, the hat width of cloth, the number of blade, branch number, sprig number are measured in the well-grown standard sample strain of picked at random 8 strains respectively, and the root system to selected plant carries out the layering excavation then.Be the center of circle with the plant rhizome during excavation, every 20cm is one deck layering excavation of fetching earth, adopt the root system back tracking method in the mining process and cross sieve method every layer root system is all taken out, the root system that intercepts according to diameter≤1mm, 1-3mm, 〉=the 3mm placement of classifying.The root system water is rinsed the back well and is measured its diameter respectively with slide measure, measures 3 repetition values at different parts during measuring diameter; The thick root of length is measured with steel tape, and the method for the usefulness of radicula linear measure longimetry difficulty " mass conversion length " is measured, and promptly measures the quality of the long root system of a certain next section of average diameter 10cm, the root system that will measure is weighed be converted into the system general length of this diameter then.Root system is measured the back packing through hierarchical layered, and mark is good, takes back the laboratory together with acrial part and dries to constant weight under 80 ℃ with baking oven.Acrial part and root system after the oven dry are weighed respectively, calculate indexs such as ground biomass dry weight, root system layering biomass dry weight, underground biomass dry weight, root system layering root system surface area then.
Claims (7)
1, the invention provides a kind of diving buried depth inductive technology method of eremophytes seedlings root growth, it is characterized in that: make up net sheet test tank, by pool wall, stub, steel wire, water injection pipe is formed and is added and fill the stone and the earthwork; Wherein pool wall thickness 25-35cm guarantees waterproof; The pond base fabric is established and highly is the stub of 45-55cm, to guarantee phreatic flowing; The top laying aperture of stub is the steel wire of 1-2cm; The top of steel wire laid stone earlier and successively inserted the earthwork, and when inserting 20-30cm, it is steady and sure to need machinery to press, and adds and buries to ground level; Monitoring test: test tank is provided with the phreatic table control test region that soil thickness is respectively 100cm, 150cm, 200cm, 250cm and 300cm, in establish the water injection pipe that underground water is connected, in time replenish underground water, make phreatic table remain at 45-55cm; Seedling is replenished through seed breeding, sowing, nursery stock management and diving, and soil keeps nature substantially.
2, technical method according to claim 1 is characterized in that: laying the stone diameter is 2.1-3.0cm, thickness 5-6cm; For preventing stone and soil particle landing entry, handstone is laid on.
3, technical method according to claim 1 is characterized in that: verify the working depth and the vertical root growth rate of seedling vertical root under the different diving buried depth conditions, quantize the relation of vertical root growth and soil moisture content.
4, technical method according to claim 1 is characterized in that: checking seedlings root form is the variation characteristic of dive water and soil earth moisture everywhere, promptly has the morphological plasticity of checking seedlings root.
5, technical method according to claim 1 is characterized in that: verify that its seedlings root quality and surface area are in the distribution characteristics on the soil space: make up the biomass vertical distribution model under the different buried depth conditions of diving under water simultaneously.
6, technical method according to claim 1 is characterized in that: the biomass allocation of checking seedling under difference diving buried depth condition, and promptly root/shoot ratio is dynamic; Seedling is distributed the variation of dealing with underground latent water and soil moisture by the biomass that changes ground/under ground portion.
7, technical method according to claim 1 is characterized in that: test tank is made and can be adopted concrete casting moulding or cement brick mix structure to lay waterproof material.
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| CN2008100729567A CN101385433B (en) | 2008-09-19 | 2008-09-19 | Groundwater-buried deeply-induced technique for desert plant seedling root system growth |
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| CN101385433B CN101385433B (en) | 2010-07-28 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135501A (en) * | 2010-11-15 | 2011-07-27 | 中国科学院新疆生态与地理研究所 | Method for observing root growth process of deep rooting plant alhagi sparsifolia |
| CN102515942A (en) * | 2011-11-30 | 2012-06-27 | 新疆汇通旱地龙腐植酸有限责任公司 | Antitranspirant, and preparation and application thereof |
| CN102972230A (en) * | 2012-12-17 | 2013-03-20 | 张健 | Salt pond for experiment of plant seedlings |
| CN109856340A (en) * | 2019-03-12 | 2019-06-07 | 河海大学 | A method of research sediment siltation grows Spartina alterniflora and Root Distribution influences |
| CN113207475A (en) * | 2021-04-19 | 2021-08-06 | 北京林业大学 | Experimental device for research plant roots growth situation |
| CN113656756A (en) * | 2021-08-26 | 2021-11-16 | 中国水利水电科学研究院 | Method for calculating critical burial depth of boundary groundwater between oasis and transition zone of inland river arid region |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101167420B (en) * | 2006-10-27 | 2010-09-15 | 中国科学院沈阳应用生态研究所 | Plant root system hydraulic lift action determination device |
| CN101138287A (en) * | 2007-10-25 | 2008-03-12 | 哈秋舲 | Desert greening water and soil conservation method and structure |
-
2008
- 2008-09-19 CN CN2008100729567A patent/CN101385433B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135501A (en) * | 2010-11-15 | 2011-07-27 | 中国科学院新疆生态与地理研究所 | Method for observing root growth process of deep rooting plant alhagi sparsifolia |
| CN102135501B (en) * | 2010-11-15 | 2012-05-23 | 中国科学院新疆生态与地理研究所 | Method for observing root growth process of deep rooting plant alhagi sparsifolia |
| CN102515942A (en) * | 2011-11-30 | 2012-06-27 | 新疆汇通旱地龙腐植酸有限责任公司 | Antitranspirant, and preparation and application thereof |
| CN102972230A (en) * | 2012-12-17 | 2013-03-20 | 张健 | Salt pond for experiment of plant seedlings |
| CN109856340A (en) * | 2019-03-12 | 2019-06-07 | 河海大学 | A method of research sediment siltation grows Spartina alterniflora and Root Distribution influences |
| CN113207475A (en) * | 2021-04-19 | 2021-08-06 | 北京林业大学 | Experimental device for research plant roots growth situation |
| CN113656756A (en) * | 2021-08-26 | 2021-11-16 | 中国水利水电科学研究院 | Method for calculating critical burial depth of boundary groundwater between oasis and transition zone of inland river arid region |
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