CN104798615A - Water-soil coupling test device for soft rock and sand combined farmland building - Google Patents
Water-soil coupling test device for soft rock and sand combined farmland building Download PDFInfo
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- CN104798615A CN104798615A CN201410810599.5A CN201410810599A CN104798615A CN 104798615 A CN104798615 A CN 104798615A CN 201410810599 A CN201410810599 A CN 201410810599A CN 104798615 A CN104798615 A CN 104798615A
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Abstract
The invention relates to a water-soil coupling test device for soft rock and sand combined farmland building. The device comprises first to eight test areas and an auxiliary device; the test areas are 15*12m in size and built through brick walls of which the top parts are aligned to the ground; an isolation zone being 1m in width or a biological protection zone being 2m in width is arranged between every two test areas; the first test area is the local original sandy soil; the second to eight test areas are divided into three test sub-areas, sandy soil fills in the bottom layer based on the thickness of 30cm, and soft rock and sand combined soil respectively fill in the surface layer according to the thickness of 30cm; the ratio of the soft rock to the sand in the soft rock and sand combined soil is 1: 1, 1: 2 and 1: 5; the first and second test areas are free of crops; potatoes are planted in the third, fifth and seven test areas; maize is planted in the fourth, sixth and eight test areas. According to the device, the complete test land prepared under a natural environment condition and corresponding auxiliary devices are adopted, so that the test result closest to the truth can be obtained.
Description
Technical field
The present invention relates to a kind of test facilities studying the varying environment parameters adjusting Water Under soil coupling of entisol earth field.
Background technology
Feldspathic sandstone, also referred to as " Brown crake ", extensively distributes at Mu Us Shadi.It with regard to weathering, plays dirt once chance wind once exposed, loose once chance water, runs off in a large number, be called as " environment cancer " with water.And sand loosely organized, leak Lou fertile, can not form soil aggregate, be also cause land resources ecological degradation " arch-criminal ".Based on the understanding to two kinds of substance characteristics, invention personnel propose the complementarity that utilization " two evils " physics is formed, and both being combined composite is a kind of novel " soil ", thus change two " evils " are one " treasured ".
But, be re-dubbed in the research process of native technology with husky at existing feldspathic sandstone, mainly contain two kinds of methods, one, simulate different environmental conditions in the lab, test different proportionings, inquire into best compound scheme.Although this research method easily realizes, there is larger difference with reality, best compound scheme cannot be obtained.They are two years old, in Mu Us Shadi, delimit polylith sandy bare land carry out composite transformation, transfer to local farmers according to experimental condition (as measures such as composite engineering, irrigation, fertilising, biological protections) management, by the output of on-the-spot investigation crops, carry out comparative study.But this method needs the human and material resources of at substantial, and cannot monitor in real time the management of local farmers, cause the confidence level of result of the test to reduce.
Therefore, be badly in need of a kind of time saving and energy saving feldspathic sandstone and sand and be re-dubbed native technical research device for rapid development feldspathic sandstone and husky compound proportion and water and fertilizer management technology.
Summary of the invention
The object of the invention is to provide a kind of feldspathic sandstone and the composite water and soil coupling test facility of building up fields of sand, and it lays complete practice ground and corresponding auxiliary device under adopting natural environmental condition, thus can obtain closest to real result of the test.
Technical solution of the present invention is:
A kind of feldspathic sandstone and the composite water and soil coupling test facility of building up fields of sand, its special character is: comprise test region, No. 1 test region to 8 totally 8 test regions be arranged side by side and the auxiliary device that is arranged in test region; Described test region is of a size of 15m × 12m, and adopt the top brick wall concordant with ground to be built into, the brick wall degree of depth is more than or equal to 60cm; Test region, described No. 1 test block to 6 is provided with the wide isolation strip of 1m between any two; Test block, described No. 6 test blocks to 8 between any two and No. 8 test region arranged outside biological protection band that has 2m wide; Described No. 1 test region is local original sandy soil; Test region, described No. 2 test blocks to 8, longitudinally dividing equally is respectively the experimental plot of 3 5m × 12m, and the thick local sandy soil of 30cm inserted by bottom, and top layer inserts feldspathic sandstone and the composite soil of sand of 30cm thick 1:1,1:2 and 1:5 respectively; Described feldspathic sandstone particle diameter is less than 4cm; Described auxiliary device comprises the irrigation installation being arranged on test region, No. 5 test regions to 8, the neutron tube being separately positioned on test region, No. 1 test region to 8; Described No. 1 test region and No. 2 test regions are without proportion of crop planting; Described No. 3 test regions, No. 5 test regions and No. 7 test region plantation potatoes; Described No. 4 test regions, No. 6 test regions and No. 8 test region maize plantings.
Above-mentioned irrigation installation is sprinkling irrigation or drip irrigation equipment.
Above-mentioned biological protection band be shrub from or willow.
Above-mentioned feldspathic sandstone particle diameter is 2 ~ 4cm.
The length of embedment of above-mentioned neutron tube is 1.5m.
Above-mentioned auxiliary device also comprises the frozen soil pipe being separately positioned on No. 1 test region and No. 2 test regions.
Beneficial effect of the present invention:
1, this Experimental Establishment is suited measures to local conditions, and adopts local feldspathic sandstone and sand to be re-dubbed soil, and only need ground more than 2 mu, construction cost is low, management cost is low.
2, this Experimental Establishment is exposed in natural environment completely, simulate very truly sandy bare land various environmental parameter and composite build up fields utilize parameter, result of the test is true and reliable.
3, these test facilities can Long-Time Service and personal management, is convenient to the demand that water and soil coupling test uses for many years.
4, this Experimental Establishment takies minimum sand ground, can meet the monitoring of the newborn soil physical indicators change of research.
5, test facilities of the present invention by Mu Us Shadi feldspathic sandstone and sand is composite build up fields based on, native proportioning (1:1 is re-dubbed with feldspathic sandstone and sand, 1:2, 1:5) and agronomy Land use systems be object, with field routine observation, monitoring and simulation technology is means, system carries out different ratio field, soil stabilization and ecological effect thereof is re-dubbed under different management mode, drop into long term monitoring and the experiment of economy and productivity thereof, platform based on this, follow the tracks of detection under natural environmental condition, different farming method changes (as composite engineering with input, irrigate, fertilising, the measures such as biological protection) on different ratio field and the difference that utilizes usefulness to affect thereof, process and mechanism, research and propose the important technological parameters being re-dubbed and making field engineering with local methods, the Criterion of Key Techniques of management is dropped in different fields, for scientific guidance degeneration and Unutilized Energy are renovated and high standard farmland construction practice, science and technology support and technical support are provided.
6, the length of embedment of neutron tube is 1.5m, truly can detect the water content of different depth soil, be convenient to Experimental Comparison.
Accompanying drawing explanation
Fig. 1 is test region artwork.Wherein, No. 1 test region and No. 2 test regions under not irrigating, only having natural precipitation situation, without the full sand of crop-planting and the comparative trial of 3 kinds of composite soil of ratio.No. 3 test regions and No. 4 test regions under not irrigating, only having natural precipitation situation, potato and the planting experiment of corn on 3 kinds of composite soil of ratio.No. 5 test regions and No. 6 test regions are potato and the planting experiment of corn on 3 kinds of composite soil of ratio under irrigation conditions.No. 7 test regions and No. 8 test regions are potato and the planting experiment of corn on 3 kinds of composite soil of ratio under having the irrigation conditions of biological safety procedures.
Embodiment
A kind of feldspathic sandstone and the composite water and soil coupling test facility of building up fields of sand, comprise test region, No. 1 test region to 8 totally 8 test regions be arranged side by side and the auxiliary device that is arranged in test region; Test region is of a size of 15m × 12m, and adopt the top brick wall concordant with ground to be built into, the brick wall degree of depth is more than or equal to 60cm; Test region, No. 1 test block to 6 is provided with the wide boundary belt of 1m between any two; Test block, No. 6 test blocks to 8 between any two and No. 8 test region arranged outside biological protection band that has 2m wide; No. 1 test region is local sandy soil; Test region, No. 2 test blocks to 8, is equally divided into the experimental plot of 3 5m × 12m, and the thick local sandy soil of 30cm inserted by bottom, and top layer inserts feldspathic sandstone and the composite soil of sand of 30cm thick 1:1,1:2 and 1:5 respectively; Feldspathic sandstone particle diameter is less than 4cm; Auxiliary device comprises the irrigation installation being arranged on test region, No. 5 test regions to 8, the neutron tube being arranged on test region, No. 1 test region to 8; No. 1 test region and No. 2 test regions are without proportion of crop planting; No. 3 test regions, No. 5 test regions and No. 7 test region plantation potatoes; No. 4 test regions, No. 6 test regions and No. 8 test region maize plantings.Irrigation installation is sprinkling irrigation or drip irrigation equipment.Biological protection band be shrub from or willow.
Multiple 1.5m neutron tube is vertically embedded in composite soil, and determining soil moisture Neutron, in earth's surface, during use, is probeed into different depth in pre-buried inserting tube by upper end open, according to measurement result, can calculate the soil moisture content of test region.
Conveniently measure different soils in the frozen soil situation of severe cold weather, also can bury frozen soil pipe underground in No. 1 test region and No. 2 test regions, carry out frozen soil measurement and contrast.
Facility of the present invention can observe entisol earth physical property (mechanical composition, aggregate, unit weight, characteristic curve of soil moisture, field capacity, saturated hydraulic conductivity, soil moisture), chemical property (organic, full nitrogen, NO
3 -, NH
4 +, full phosphorus, available potassium, pH, ), plant growth parameter (Crop leaf area index, crop dry matter, crop yield) data, test data changes (as composite engineering for contrasting different farming method with input, irrigate, fertilising, the measures such as biological protection) on different ratio field and the difference that utilizes usefulness to affect thereof, process and mechanism, for the composite water and soil of building up fields of feldspathic sandstone and the sand construction reference that is coupled provides foundation, can for a long time for " feldspathic sandstone and sand be re-dubbed soil stabilization and Study on Sustainable Use ", " time out feldspathic sandstone and composite the building up fields of sand fix the sand key technology research ", pilot projects such as " research of sand ground land comprehensive remedial technology and Demonstration Application ".
Claims (6)
1. feldspathic sandstone and the composite water and soil coupling test facility of building up fields of sand, is characterized in that:
Comprise test region, No. 1 test region to 8 totally 8 test regions be arranged side by side and the auxiliary device that is arranged in test region;
Described test region is of a size of 15m × 12m, and adopt the top brick wall concordant with ground to be built into, the brick wall degree of depth is more than or equal to 60cm;
Test region, described No. 1 test block to 6 is provided with the wide isolation strip of 1m between any two; Test block, described No. 6 test blocks to 8 between any two and No. 8 test region arranged outside biological protection band that has 2m wide;
Described No. 1 test region is local original sandy soil;
Test region, described No. 2 test blocks to 8, longitudinally dividing equally is respectively the experimental plot of 3 5m × 12m, and the thick local sandy soil of 30cm inserted by bottom, and top layer inserts feldspathic sandstone and the composite soil of sand of 30cm thick 1:1,1:2 and 1:5 respectively; Described feldspathic sandstone particle diameter is less than 4cm;
Described auxiliary device comprises the irrigation installation being arranged on test region, No. 5 test regions to 8, the neutron tube being separately positioned on test region, No. 1 test region to 8;
Described No. 1 test region and No. 2 test regions are without proportion of crop planting;
Described No. 3 test regions, No. 5 test regions and No. 7 test region plantation potatoes;
Described No. 4 test regions, No. 6 test regions and No. 8 test region maize plantings.
2. feldspathic sandstone according to claim 1 and the composite water and soil coupling test facility of building up fields of sand, is characterized in that:
Described irrigation installation is sprinkling irrigation or drip irrigation equipment.
3. feldspathic sandstone according to claim 1 and the composite water and soil coupling test facility of building up fields of sand, is characterized in that:
Described biological protection band be shrub from or willow.
4. the feldspathic sandstone according to claim 1 or 2 or 3 and the composite water and soil coupling test facility of building up fields of sand, is characterized in that:
Described feldspathic sandstone particle diameter is 2 ~ 4cm.
5. feldspathic sandstone according to claim 4 and the composite water and soil coupling test facility of building up fields of sand, is characterized in that:
The length of embedment of described neutron tube is 1.5m.
6. feldspathic sandstone according to claim 5 and the composite water and soil coupling test facility of building up fields of sand, is characterized in that:
Described auxiliary device comprises the frozen soil pipe being separately positioned on No. 1 test region and No. 2 test regions.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111919533A (en) * | 2020-07-09 | 2020-11-13 | 亿利资源集团有限公司 | Comprehensive improvement method for desertification land |
CN114451236A (en) * | 2022-02-24 | 2022-05-10 | 陕西地建土地工程技术研究院有限责任公司 | Method for promoting corn growth in sand by jointly applying AMF and sandstone |
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JPH10183652A (en) * | 1996-12-20 | 1998-07-14 | Kajima Corp | Culvert under earth filling |
CN103821153A (en) * | 2014-01-10 | 2014-05-28 | 东南大学 | Arsenic sandstone slope treating method |
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2014
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JPH10183652A (en) * | 1996-12-20 | 1998-07-14 | Kajima Corp | Culvert under earth filling |
CN103821153A (en) * | 2014-01-10 | 2014-05-28 | 东南大学 | Arsenic sandstone slope treating method |
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付佩等: "砒砂岩与沙复配成土造田技术研究", 《水土保持通报》 * |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111919533A (en) * | 2020-07-09 | 2020-11-13 | 亿利资源集团有限公司 | Comprehensive improvement method for desertification land |
CN114451236A (en) * | 2022-02-24 | 2022-05-10 | 陕西地建土地工程技术研究院有限责任公司 | Method for promoting corn growth in sand by jointly applying AMF and sandstone |
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