Buried steam pipeline system used for improving saline-alkali soil and method for improving saline-alkali soil

A steam pipeline and soil improvement technology, applied in the field of soil remediation, can solve the problems of waste of water resources, large economic investment, pollution of groundwater and downstream water bodies, etc., to increase soil organic matter content, increase emergence rate and yield, and increase functional diversity Effect

Inactive Publication Date: 2019-07-30
SHENGSHI LANDSCAPE GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Physical measures include irrigation and salt spraying, plastic film covering, etc. In China, the water conservancy improvement method "fresh water salt pressing, drainage washing salt" is mainly used. The "drainage-based" method can effectively reduce the salinity in the area, but the operation cost of the treatment technology is high. , and will cause serious waste of water resources, and even cause groundwater and downstream water pollution, chemical measures include the application of chemical modifiers, biological measures include the selection of salt-tolerant plants, etc.
Commonly used methods such as foreign soil replacement and hydraulic leaching in physical measures have the disadvantages of large basic investment and complex engineering; in biological measures, distant source hybridization and genetic engineering to cultivate salt-tolerant species require high technical requirements, large economic investment, and slow results. The cycle is long; the application of amendments commonly used in chemical measures has quick results and low investment. In recent years, it has been widely used in saline-alkali soil improvement and vegetation restoration, but it is easy to cause chemical residual pollution

Method used

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  • Buried steam pipeline system used for improving saline-alkali soil and method for improving saline-alkali soil
  • Buried steam pipeline system used for improving saline-alkali soil and method for improving saline-alkali soil

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Such as figure 1 As shown, a buried steam pipeline system for improving saline-alkali soil, including a steam boiler 1, a water pump 2 and a main pipe 3 on one side of the surface of the saline-alkali soil, and the other side of the saline-alkali soil A drainage ditch 4 is provided, one end of the main pipe 3 is connected to the outlet of the steam boiler 1, the end of the main pipe 3 connected to the steam boiler 1 is provided with a steam valve 5, and the other end of the main pipe 3 is connected to the water pump 2, the end of the main pipe 3 connected to the water pump 2 is provided with a flow valve 6, and the main pipe 3 is connected with several vertical pipes 7 downwards in the vertical direction, and the vertical pipes 7 extend downwards to Inside the soil, the lower end of the vertical pipe 7 is connected with a number of horizontal pipes 8 with holes, and the horizontal pipes 8 extend obliquely downward into the drainage ditch 4 .

[0028] The following is a...

Embodiment 2

[0036] The following is an example of saline-alkali soil in Xinghualing District, Taiyuan City. Taking soil samples, the salt content of saline-alkali soil in the landscape area of ​​this area is 0.5% to 3.1%, and the pH value is 7.9 to 9.1. The degree of oxidation is 15% to 30%.

[0037] First of all, in February, the saline-alkali soil was rotary plowed with a rotary plow at a depth of 30 cm, and then open ditches were dug on both sides of the saline-alkali soil with a depth of 30 cm. Irrigation channel: inject water into the irrigation channel, discharge water to both sides to wash in turn, and drain the saline water through the open ditch, dry the saline-alkali soil after washing, and plow it again until the soil is loose.

[0038] Then use the buried steam pipeline system to carry out secondary salt washing to the saline-alkali soil, and the buried steam pipeline system for improving the saline-alkali soil is completely laid, and the horizontal pipe 8 with holes in the sy...

Embodiment 3

[0044] The following is an example of saline-alkali soil in Xiaodian District, Taiyuan City. The salinity of the saline-alkali soil in the landscape area of ​​this area is measured by taking soil samples. The salt content is 0.6% to 3.5%, and the pH is 8.0 to 9.1. The degree is 12% to 28%.

[0045] Firstly, rotary plows were used for saline-alkali soil in February, and the depth of the rotary plow was 50 cm. Then, open ditches were dug on both sides of the saline-alkali soil. The depth of the ditches was 50 cm. Irrigation channel: inject water into the irrigation channel, discharge water to both sides to wash in turn, and drain the saline water through the open ditch, dry the saline-alkali soil after washing, and plow it again until the soil is loose.

[0046] Then use the buried steam pipeline system to carry out secondary salt washing to the saline-alkali soil, and the buried steam pipeline system for improving the saline-alkali soil is completely laid, and the horizontal pi...

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Abstract

The invention discloses a buried steam pipeline system used for improving saline-alkali soil. The system comprises a steam boiler, a water pump, a main pipe and a drainage ditch, wherein the steam boiler, the water pump and the main pipe are arranged on one side of the surface of the saline-alkali soil; the drainage ditch is arranged on the other side of the saline-alkali soil; one end of the mainpipe is connected with an outlet of the steam boiler; a steam valve is arranged at the end part of the main pipe, which is connected with the steam boiler; the other end of the main pipe is connectedwith an outlet of the water pump; a water flow valve is arranged at the end part of the main pipe, which is connected with the water pump; the main pipe is downwards connected with a plurality of vertical pipes in the vertical direction; the vertical pipes extend downwards into the soil; the lower ends of the vertical pipes are connected with a plurality of horizontal pipes with holes; and the horizontal pipes with the holes extend slantingly and downwards into the drainage ditch. The system is combined with methods of irrigating for salt washing, adding a soil improver and planting saline-alkali tolerant plants for remedying the saline-alkali soil, so that the improvement effect of the saline-alkali soil is effectively improved. Therefore, the texture and the fertility of the soil are improved, and the system has certain economic benefits and can promote the construction and development of agriculture and forestry in saline-alkali regions.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and in particular relates to an underground steam pipeline system for improving saline-alkali soil and a method for improving saline-alkali soil. Background technique [0002] At present, saline-alkali soils are widely distributed in my country, among which there are nearly 13 million hectares of saline-alkali soils with potential for agricultural development and utilization, accounting for more than 10% of my country's arable land. At the same time, 670,000 hectares of secondary salinized soils were caused by improper irrigation in the existing cultivated land. At present, my country's land use area has reached the upper limit, and the focus of the development and utilization of reserve land resources should be the improvement and management of degraded land. The saline-alkali soil in my country is mostly in the arid and semi-arid zone, and the soil has not been polluted by man-made he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B77/00A01B79/00A01B79/02C09K17/40C09K101/00C09K109/00
CPCA01B77/00A01B79/00A01B79/02C09K17/40C09K2101/00C09K2109/00
Inventor 李珂李庆召王新龙杨娟吴静静郭士伟
Owner SHENGSHI LANDSCAPE GRP CO LTD
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