CN105334311B - A kind of multi-layer Soil liquid manure Transport And Transformation parameter test device and method - Google Patents

A kind of multi-layer Soil liquid manure Transport And Transformation parameter test device and method Download PDF

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CN105334311B
CN105334311B CN201510933703.4A CN201510933703A CN105334311B CN 105334311 B CN105334311 B CN 105334311B CN 201510933703 A CN201510933703 A CN 201510933703A CN 105334311 B CN105334311 B CN 105334311B
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soil
water
layer
liquid manure
lucite
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CN105334311A (en
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邵东国
徐保利
杨霞
陈述
乐志华
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Wuhan University WHU
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    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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    • G01N33/24Earth materials
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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    • G01N33/245Earth materials for agricultural purposes

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Abstract

The present invention relates to a kind of multi-layer Soil liquid manure Transport And Transformation parameter test device and method, comprise the following steps:A () makes column jacket and stratified soil earth pillar in cylindrical lucite, plum blossom-shaped hole is wherein dispersed with lucite inner prop specified altitude assignment, and soil earth pillar is wrapped up by inner prop and is divided into arable layer, the layer that plows, substratum according to rice field undisturbed soil feature;Soil water potential sensor, negative pressure water ampling device and soil moisture content measuring instrument are buried in (b) each soil layer respectively;C the side seepage water produced simultaneously in () soil moisture infitration process is discharged to the annular region between interior column jacket by plum blossom hole, being drawn into external device (ED) carries out assay.The present invention is used to probe into stratified soil liquid manure and enters to blend side and ooze and its conversion process, determine the contribution rate of vertical seepage and side seepage to draining under the various situations of stratified soil, different levels of ground water can be set, each layer soil liquid manure Transport And Transformation process and the mutual recharge connection of soil water underground water is studied.

Description

A kind of multi-layer Soil liquid manure Transport And Transformation parameter test device and method
Technical field
The present invention relates to soil liquid manure migration field, specifically a kind of multi-layer Soil liquid manure Transport And Transformation parameter testing Device and method.
Background technology
Soil water movement and solute transfer are the bases for studying field water fertilizer Transport And Transformation and utilization ratio, at present to soil The research of earth moisture movement and solute transfer be mainly by field test study on monitoring and indoor set simulate study on monitoring come Carry out, field water fertilizer is moved under monitor on field helps to understand actual water management measure, but the research method of monitor on field Survey that the test period is long, experimental condition is difficult to control to and reappears, and monitor on field research has regiospecificity, and Monitoring Result is not Preferably it is applied to other regions.
Found according to substantial amounts of field inspection and experimental study, because the special water management measure of paddy rice, paddy soil In vertical direction generally there is the characteristics of obvious horizontal slice, this layering to cause the conversion of motion of paddy field moisture and nutrient Have its own particularity.Soil Water and nutrient transfer are converted, and Vertical Infiltration and seepage aspect are not only occurred on, while also depositing It is during side seepage between each soil layer and soil layer and to irrigation canals and ditches is moved.But homogeneous soil is studied existing method more, and only Consider One-dimensional Vertical or the horizontal movement of the soil water and solute, it is difficult to accurately reflect agricultural land soil liquid manure motion conditions, experiment knot Fruit is applied to can there is larger error in field water fertilizer motion study, it is therefore desirable to more meet the invented party of farmland actual conditions Method.
The content of the invention
The purpose of the present invention is that a kind of multi-layer Soil liquid manure Transport And Transformation parameter testing dress is provided to solve the above problems Put and method, can study that stratified soil moisture and nutrient be vertical and side seepage motion, and can monitor different water levels depth with Under level of ground water combination, displacement and earth pillar are oozed with ground in motion and conversion process of the moisture between each layer soil, metering earth pillar side Lower exchange of moisture amount, is sampled by the soil liquid, Transport And Transformation mistake of the monitoring nutrient between soil layer, between the soil water and underground water Journey.
A kind of multi-layer Soil liquid manure Transport And Transformation parameter test device, including platform 25, on platform 25 from the inside to the outside successively Stratified soil post 1, cylindrical lucite inner prop 2 and cylindrical lucite column jacket 3 are set, and platform 25 is arranged with water supply chamber 13, the side wall top of water supply chamber 13 is provided with a steam vent 14, and water supply chamber 13 passes through feed pipe 15 and automatically controls supply and discharge water installations 16 are connected;
Substratum 6 is sequentially consisted of in stratified soil post 1, plow layer 5 and arable layer 4, be respectively arranged with each layer Soil water potential sensor 7, negative pressure water ampling device 8 and soil moisture content measuring instrument 9 positioned at same level, the soil water Gesture sensor 7 is connected by cable with soil water potential collector 19, and negative pressure water ampling device 8 is true with the negative pressure taking soil water by cable Slack tank 20 be connected, soil moisture content measuring instrument 9 by cable respectively with soil moisture collector 21, soil moisture collector 22 It is connected;
Plum blossom hole 10 is offered on cylindrical lucite inner prop 2, is produced in soil moisture infitration process for discharging Raw lateral leakage water;Porous flange 26 is evenly arranged on platform 25, for water supply chamber 13 and the exchange of moisture of soil column 1.
All soil water potential sensors 7 in stratified soil post 1 in same perpendicular, positioned at stratified soil post In same perpendicular, all soil moisture contents in stratified soil post 1 are measured all negative pressure water ampling devices 8 in 1 Instrument 9 is in same perpendicular.
Soil water potential collector 19, soil moisture collector 21, soil moisture collector 22 are integrated in soil data synthesis In vasculum 18, soil data synthetical collection case 18 is also connected with terminal.
It is annular region 11, annular region between the cylindrical lucite inner prop 2 and cylindrical lucite column jacket 3 11 width is not less than 65mm, and the bottom of annular region 11 sets drainpipe 12, for deriving lateral percolating water.
The side bottom of water supply chamber 13 sets drainpipe 27, and valve 28 is set on drainpipe 27 to control current.
The height of the cylindrical lucite inner prop 2 is not less than 1184mm, and diameter is not less than 300mm;Cylinder is organic The height of glass column jacket 3 is not less than 1100mm, and diameter is not less than 430mm;The height of arable layer 4 is 200-300mm, and plow layer 5 Height be 150-200mm, the height of substratum 6 is not less than 600mm.
The a diameter of 3mm of the plum blossom hole 10, is uniformly distributed in the following 250mm- in the top of cylindrical lucite inner prop 2 On the post jamb of 750mm height.
The top arrangement plastic filter screen of the porous flange 26;Plastics filter is provided between plum blossom hole 10 and soil column Net, prevents soil particle from being taken out of by side seepage water.
A kind of multi-layer Soil liquid manure Transport And Transformation parameter test method, comprises the following steps:
1st, gathering each layer soil sample carries out assay, it is determined that initial items physical and chemical parameter value;
2nd, highest and minimum control groundwater level are determined:Highest control groundwater level is not higher than soil column post jamb side and oozes Section lower end, minimum control groundwater level determines according to requirement of experiment;
3rd, configuration soil liquid manure solution simulates rice field in soil column arable layer surface fertilizing, and keeps certain water depth, Water depth determines according to specific experiment requirement;
4th, basis is embedded in every layer of soil water-containing in the sensor dynamic monitoring liquid manure solution infiltration process of each layer of soil column Rate, temperature and flow of water situation, and taken respectively in each layer according to the sampling frequency of requirement of experiment using negative pressure water ampling device simultaneously Water sample, according to nutritive element content in the requirement of experiment measurement soil liquid;With reference to the soil moisture content for observing, the soil moisture with And soil water potential is analyzed, the change of corresponding content and its distribution situation in soil in liquid manure infitration process are probed into;Enter The process of one step research soil moisture and nutrient Transport And Transformation between the layers;
5th, during being oozed under soil liquid manure solution, can be in the plum blossom hole formation of cylindrical lucite inner prop side wall Side is oozed, and the drainpipe according to the outer column bottom of the cylindrical lucite collects the side inside and outside lucite between post annular region Infiltration, carries out weighing chemical examination, probes into the shared proportion during liquid manure solution seepage of continuous lateral seepage, and analyze continuous Side ooze during liquid manure Changing Pattern and each factor Transport And Transformation;
6th, output and displacement the analysis soil liquid manure according to the day part for automatically controlling water supply and sewage device monitoring are molten The change procedure of the groundwater level in liquid infitration process, analyzes the influence to groundwater level;Collect in the lucite The water sample of post bottom water supply chamber, carries out assay, and constituent and content in analysis discharge water are probed into liquid manure in soil and hung down Straight filter loss amount;By the independent monitoring process for soil lateral seepage water and vertical lower infiltration, analysis soil liquid manure seepage Two-dimensional characteristics, probe into various control Soil Under Conditions liquid manure transportion and transformation, for improve liquid manure utilization ratio provides theory according to According to and technical support.
The advantage of a kind of multi-layer Soil liquid manure Transport And Transformation parameter test device of the present invention and method is:
1st, currently invention addresses the moisture and nutrient transfer conversion process of stratified soil, and it is non-existing for homogeneous soil Research method, makes the experimental condition of existing research method more conform to farmland actual conditions.Passed in each soil layer arrangement soil water potential Sensor, negative pressure water ampling device and soil moisture content measuring instrument, while measurement temperature, is capable of achieving for stratified soil moisture and supports The test analysis of componental movement and conversion process relevant parameter.
2nd, by laying plum blossom hole on lucite inner prop, soil column can be formed in process of the test and laterally oozed Stream, seepage flow water is collected in annular region, then chemically examines the nutrient situation of seepage water, side when being oozed under achievable soil column moisture To the monitoring that seepage flow and nutrient are discharged.
3rd, the test process involved by the invention is to automatically control the realization of supply and discharge water installations by connecting a level of ground water , can be with the water quality exchanges of quantitative study soil column soil moisture and water supply chamber underground water, with reference to and then realizing using the device Soil column draining difference whereabouts independent test, and nutrient difference loss approach test.
4th, by setting different water layer and levels of ground water, it is capable of achieving soil moisture nutrient under the different control conditions of research Transport And Transformation, further appreciate that different situations set lower field water fertilizers motion, for monitoring, improve field water fertilizer utilization ratio and carry For more fully theory support.
Brief description of the drawings
Fig. 1 is the overall structure diagram of apparatus of the present invention.
Fig. 2 is the partial structural diagram of apparatus of the present invention.
Fig. 3 is the floor plan of apparatus of the present invention.
Fig. 4 is the structural representation of plum blossom hole.
In figure, 1 is stratified soil post, and 2 is cylindrical lucite inner prop, and 3 is cylindrical lucite column jacket, and 4 is cultivated Make layer, 5 is the layer that plows, and 6 is substratum, and 7 is soil water potential sensor, and 8 is negative pressure water ampling device, and 9 measure for soil moisture content Instrument, 10 is plum blossom hole, and 11 is annular region, and 12 is drainpipe, and 13 is water supply chamber, and 14 is steam vent, and 15 is feed pipe, 16 To automatically control supply and discharge water installations, 17 is valve, and 18 is soil data synthetical collection case, and 19 is soil water potential collector, and 20 are Negative pressure taking soil water vacuum tank, 21 is soil moisture collector, and 22 is soil moisture collector, and 23 is flange bolt, and 24 is interior Post flange, 25 is platform, and 26 is porous flange, and 27 is drainpipe, and 28 is valve.
Specific embodiment
Embodiment one
The present invention is further described with reference to Figure of description.As Figure 1-4, a kind of multi-layer Soil liquid manure Transport And Transformation parameter test device, including platform 25, setting gradually stratified soil post 1, cylinder on platform 25 from the inside to the outside has Machine glass inner prop 2 and cylindrical lucite column jacket 3, platform 25 are arranged with water supply chamber 13, and the side wall top of water supply chamber 13 is set There is a steam vent 14, water supply chamber 13 is connected by feed pipe 15 with supply and discharge water installations 16 are automatically controlled;
Substratum 6 is sequentially consisted of in stratified soil post 1, plow layer 5 and arable layer 4, be respectively arranged with each layer Soil water potential sensor 7, negative pressure water ampling device 8 and soil moisture content measuring instrument 9 positioned at same level, the soil water Gesture sensor 7 is connected by cable with soil water potential collector 19, and negative pressure water ampling device 8 is true with the negative pressure taking soil water by cable Slack tank 20 be connected, soil moisture content measuring instrument 9 by cable respectively with soil moisture collector 21, soil moisture collector 22 It is connected;
Plum blossom hole 10 is offered on cylindrical lucite inner prop 2, is produced in soil moisture infitration process for discharging Raw lateral leakage water.
All soil water potential sensors 7 in stratified soil post 1 in same perpendicular, positioned at stratified soil post In same perpendicular, all soil moisture contents in stratified soil post 1 are measured all negative pressure water ampling devices 8 in 1 Instrument 9 is in same perpendicular.
Soil water potential collector 19, soil moisture collector 21, soil moisture collector 22 are integrated in soil data synthesis In vasculum 18, soil data synthetical collection case 18 is also connected with terminal, and the dynamic testing process of observed parameter is simultaneously read Take corresponding dynamic changing data.
It is annular region 11, annular region between the cylindrical lucite inner prop 2 and cylindrical lucite column jacket 3 11 bottoms set drainpipe 12, for deriving lateral percolating water.
The side bottom of water supply chamber 13 sets drainpipe 27, and valve 28 is set on drainpipe 27 to control current.
The height of the arable layer 4 is 200mm, and the height of the layer 5 that plows is 200mm, and the height of substratum 6 is 600mm.It is whole Individual soil column height is between 950-1050 mm.The height of soil column can add according to the thickness of the substratum of specific experiment requirement To adjust.A diameter of 300mm of the cylindrical lucite inner prop 2, is highly 1184mm;Cylindrical lucite column jacket 3 A diameter of 430mm, be highly 1100mm.
The a diameter of 3mm of the plum blossom hole 10, is uniformly distributed in the following 250mm- in the top of cylindrical lucite inner prop 2 On the post jamb of 750mm height.
Uniformly be covered with porous flange 26 on the platform of the cylindrical bottom of lucite inner prop 2, porous flange 26 it is upper Side's arrangement plastic filter screen;Plastic filter screen is provided between plum blossom hole 10 and soil column, soil particle is prevented by side seepage water Take out of.
Supply and discharge water installations 16 are automatically controlled for existing patent, Application No. 2005200993186, the applying date is 2005 12 The moon 12.
The inventive method, comprises the following steps:
(1)Make apparatus of the present invention:
A () makes stratified soil earth pillar 1, cylindrical lucite inner prop 2, cylindrical lucite column jacket 3, lucite The plum blossom-shaped hole 10 shown in Fig. 4 is dispersed with inner prop specified altitude assignment, is used to discharge what is produced in soil moisture infitration process Lateral leakage water, plastic filter screen is set between plum blossom hole and earth pillar, prevents soil particle from being taken out of by side seepage water, its thickness Determine according to requirement of experiment, lucite inner prop is fixed on platform 25 by flange bolt 23 and inner prop flange 24, its underpart Platform on be uniformly arranged porous flange 26, and lay plastic filter screen thereon, the thickness of plastic filter screen is true according to requirement of experiment It is fixed;
B () soil earth pillar is wrapped up by inner prop and is divided into arable layer 4, the layer 5 that plows, substratum 6 according to rice field undisturbed soil feature, Each thickness degree is respectively 200 mm, 200 mm, 600 mm, according to after design requirement back-filling in layers and being compacted;
Soil water potential sensor 7, negative pressure water ampling device 8 and soil moisture content measuring instrument are buried in (c) each soil layer respectively Device 9(While measurement temperature), it is desirable on same horizontal plane, each row identical instrument is same vertical for each layer of instrument On section.Soil layer inner sensor is respectively connecting to soil water potential and adopts using respective cable by column jacket preformed hole in lucite Storage 19, negative pressure taking soil water vacuum tank 20, soil moisture collector 21, soil moisture collector 22, wherein, soil water potential is adopted Storage 19, soil moisture collector 21, soil moisture collector 22 are integrated in soil data synthetical collection case 18;Dynamic acquisition Supplemental characteristic is transmitted to main control computer, and the size of the soil data synthetical collection case 18 is 360mm × 200mm.Lucite The interior each layer of column jacket preformed hole has three to be evenly distributed on same horizontal plane, wherein, lucite inner prop and lucite The preformed hole of column jacket is respectively 250mm from distance of upper strata to the lower floor at the top of glass column at sustained height position, 425mm, 600mm;
D () discharges lateral seepage water to the annular region 11 between interior column jacket by plum blossom hole 10, at annular region bottom Portion sets a drainpipe 12, is discharged to the outside by drainpipe and carries out assay after collecting;
E () lucite inner prop low mounting height is for the water supply chamber 13 of 84mm is used to water supply in earth pillar and accepts earth pillar Draining in the vertical infitration process of moisture, and steam vent 14 is provided with above the side wall of water supply chamber 13, water supply chamber passes through feed pipe 15 connections automatically control supply and discharge water installations 16, the control water mobility status of valve 17 are set on feed pipe, and receive by drainpipe 27 Integrate draining, while setting the control draining current of valve 28.
(2)Experiment first gathers each layer soil sample and carries out assay before starting, it is determined that initial items physical and chemical parameter value.
(3)Determine highest and minimum control groundwater level.Highest control groundwater level is not higher than earth pillar post jamb side and oozes Section lower end, minimum control groundwater level determines according to requirement of experiment.
(4)The soil liquid manure solution for configuring certain proportion concentration simulates rice field in earth pillar arable layer surface fertilizing, and keeps Certain water depth, water depth determines according to specific experiment requirement.Different water depths represents different irrigation methods, meeting Transport And Transformation on liquid manure in multi-layer Soil produces influence.
(5)According to it is described be embedded in the sensor dynamic monitoring liquid manure solution infiltration process of each layer of earth pillar in every layer of soil contain Water rate, temperature and flow of water situation, and fetched water respectively in each layer according to the sampling frequency of requirement of experiment using negative pressure device simultaneously Sample, according to nutritive element content in the requirement of experiment measurement soil liquid.With reference to the soil moisture content for observing, the soil moisture and Soil water potential is analyzed, and probes into change and its distribution in soil of corresponding content etc. in liquid manure infitration process.Further The process of research soil moisture and nutrient Transport And Transformation between the layers.
(6)According to it is described oozed under soil liquid manure solution during, can lucite inner prop side wall plum blossom hole Form side and ooze situation, inside and outside the drainpipe collection lucite according to the outer column bottom of the lucite between post annular region Lateral seepage, carries out weighing chemical examination, probes into the shared proportion during liquid manure solution seepage of continuous lateral seepage, and the company of analysis Continuous side ooze during liquid manure Changing Pattern and each factor Transport And Transformation.
(7)Output and displacement the analysis soil liquid manure of the day part monitored according to the automatic control drainage device The change procedure of the groundwater level in solution infitration process, analyzes the influence to groundwater level.Collect the lucite The water sample of inner prop bottom water supply chamber, carries out assay, and constituent and content in analysis discharge water probe into liquid manure in soil Vertical filter loss amount.By the independent monitoring process for soil lateral seepage water and vertical lower infiltration, soil liquid manure seepage is analyzed Two-dimensional characteristics, probe into various control Soil Under Conditions liquid manure transportion and transformation, for improve liquid manure utilization ratio theory is provided Foundation and technical support.
Embodiment two
Apparatus and method step based on embodiment one, is capable of achieving the implementation of following experiment:
Such as Fig. 1-4, column jacket, soil earth pillar set 4 and are connected to same automatically controlling simultaneously in the lucite Supply and discharge water installations, its soil layer situation, embedded instrument situation, collection collection situation all same.The actual field face crop-planting feelings of simulation Condition is respectively in 4 arable layer long-term croppings of device.It is F1 and F2 to set two kinds of irrigation methods, sets two kinds of groundwater level controls Make horizontal Z1 and Z2.Experiment sets 4 treatment levels altogether:F1Z1, F1Z2, F2Z1, F2Z2, determine to irrigate according to Crop growing stage System.Each layer pedotheque is gathered before crop-planting, its corresponding physical and chemical parameter is determined.
The earth pillar water depth not should be greater than crop maximum flooding depth.
The groundwater level of described device determines according to respective requirement of experiment.Wherein, highest controlling water level should not be greater than Crop drainage water level, can determine according to farmland prevention against water-logging standard;Minimum controlling water level is determined according to requirement of experiment.
Identical Fertilization Level is set.Soil water sample periodically is obtained by each layer negative pressure sampling apparatus, chemical examination point is carried out Analysis;The soil moisture sensor for being embedded in each layer of soil and soil water potential sensor real-time monitoring soil moisture, temperature and The change procedure of the flow of water.Gather crop sample respectively in the different growing of crop, determine its crop endotrophic element Content.
Collect the side seepage water of post annular region inside and outside the lucite and carry out weighing chemical examination.Read described automatic The control corresponding output of supply and discharge water installations and displacement data.
According to experimental data, crop-soil is studied in the effect of analysis irrigation method and level of ground water control to liquid manure motion The Transport And Transformation of water-underground water liquid manure, is target to improve crop to liquid manure absorption efficiency and reduction liquid manure filter loss, it is determined that Rational irrigation method and Groundwater Control horizontal combination.

Claims (9)

1. a kind of multi-layer Soil liquid manure Transport And Transformation parameter test method, it is characterised in that comprise the following steps:
(1) gathering each layer soil sample carries out assay, it is determined that initial items physical and chemical parameter value;
(2) highest and minimum control groundwater level are determined:Highest control groundwater level is not higher than soil column post jamb side and oozes section Lower end, minimum control groundwater level determines according to requirement of experiment;
(3) configuration soil liquid manure solution simulates rice field in soil column arable layer surface fertilizing, and keeps certain water depth, water layer Depth determines according to specific experiment requirement;
(4) according to be embedded in the sensor dynamic monitoring liquid manure solution infiltration process of each layer of soil column every layer of soil moisture content, Temperature and flow of water situation, and fetched water respectively in each layer according to the sampling frequency of requirement of experiment using negative pressure water ampling device simultaneously Sample, according to nutritive element content in the requirement of experiment measurement soil liquid;With reference to the soil moisture content for observing, the soil moisture and Soil water potential is analyzed, and probes into the change of corresponding content and its distribution situation in soil in liquid manure infitration process;Enter one The process of step research soil moisture and nutrient Transport And Transformation between the layers;
(5) during being oozed under soil liquid manure solution, can be in the plum blossom hole formation side of cylindrical lucite inner prop side wall Ooze, the drainpipe according to the outer column bottom of cylindrical lucite collects the lateral seepage inside and outside lucite between post annular region, Weighing chemical examination is carried out, the shared proportion during liquid manure solution seepage of continuous lateral seepage is probed into, and is analyzed continuous side and ooze During liquid manure Changing Pattern and each factor Transport And Transformation;
(6) under output and displacement the analysis soil liquid manure solution according to the day part for automatically controlling water supply and sewage device monitoring The change procedure of the groundwater level during oozing, analyzes the influence to groundwater level;Lucite inner prop bottom is collected to supply The water sample of hydroecium, carries out assay, and constituent and content in analysis discharge water are probed into the vertical seepage of liquid manure in soil and damaged Vector;By the independent monitoring process for soil lateral seepage water and vertical lower infiltration, the two-dimensional characteristics of soil liquid manure seepage are analyzed, Probe into various control Soil Under Conditions liquid manure transportion and transformation.
2. the method for claim 1, it is characterised in that:The device that the method is used includes platform (25), platform (25) On set gradually stratified soil post (1), cylindrical lucite inner prop (2) and cylinder lucite column jacket (3) from the inside to the outside, Platform (25) is arranged with water supply chamber (13), and wall top in water supply chamber (13) side is provided with a steam vent (14), and water supply chamber (13) leads to Cross feed pipe (15) and be connected with supply and discharge water installations (16) are automatically controlled;
Sequentially consisted of in stratified soil post (1) and set respectively in substratum (6), the layer that plows (5) and arable layer (4), each layer Soil water potential sensor (7) positioned at same level, negative pressure water ampling device (8) and soil moisture content measuring instrument (9) are equipped with, The soil water potential sensor (7) is connected by cable with soil water potential collector (19), and negative pressure water ampling device (8) is by cable It is connected with negative pressure taking soil water vacuum tank (20), soil moisture content measuring instrument (9) is gathered with the soil moisture respectively by cable Device (21), soil moisture collector (22) are connected;
Plum blossom hole (10) is offered on cylindrical lucite inner prop (2), is produced in soil moisture infitration process for discharging Raw lateral leakage water;Porous flange (26) is evenly arranged on platform (25), for water supply chamber (13) and the moisture of soil column (1) Exchange.
3. method as claimed in claim 2, it is characterised in that:All soil water potentials sensing in stratified soil post (1) In same perpendicular, all negative pressure water ampling devices (8) in stratified soil post (1) are in same perpendicular for device (7) Interior, all soil moisture content measuring instruments (9) in stratified soil post (1) are in same perpendicular.
4. method as claimed in claim 2, it is characterised in that:Soil water potential collector (19), soil moisture collector (21), Soil moisture collector (22) is integrated in soil data synthetical collection case (18), soil data synthetical collection case (18) also with meter Calculation machine terminal is connected.
5. method as claimed in claim 2, it is characterised in that:The cylindrical lucite inner prop (2) and cylinder are organic It is annular region (11) between glass column jacket (3), the width of annular region (11) is not less than 65mm, and annular region (11) bottom sets Drainpipe (12) is put, for deriving lateral percolating water.
6. method as claimed in claim 2, it is characterised in that:Water supply chamber (13) side bottom sets drainpipe (27), draining Valve (28) is set on pipe (27) to control current.
7. method as claimed in claim 2, it is characterised in that:The height of the cylindrical lucite inner prop (2) is not less than 1184mm, diameter is not less than 300mm;The height of cylindrical lucite column jacket (3) is not less than 1100mm, and diameter is not less than 430mm;The height of arable layer (4) is 200-300mm, and the height of the layer that plows (5) is 150-200mm, and the height of substratum (6) is not Less than 600mm.
8. method as claimed in claim 2, it is characterised in that:The a diameter of 3mm of the plum blossom hole (10), is uniformly distributed in circle On the post jamb of the following 250mm-750mm height in cylindricality lucite inner prop (2) top.
9. method as claimed in claim 2, it is characterised in that:The top arrangement plastic filter screen of the porous flange (26);Plum Flower hole (10) is provided with plastic filter screen and soil column between, prevents soil particle from being taken out of by side seepage water.
CN201510933703.4A 2015-12-15 2015-12-15 A kind of multi-layer Soil liquid manure Transport And Transformation parameter test device and method Expired - Fee Related CN105334311B (en)

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