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Method for improving soil by utilizing argillaceous shale weathered substance and application of method

A technology for argillaceous shale and soil improvement, which is applied in the field of soil improvement, using weathered argillaceous shale to improve soil, which can solve problems such as low soil quality and poor soil structure stability, so as to improve water holding capacity and maintain stability , Improve the effect of organic matter and total nitrogen content

Pending Publication Date: 2022-07-05
陕西地建土地工程技术研究院有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problems of argillaceous weathered shale, poor soil structure stability and low soil quality in some areas during the remediation process of the loess plateau wasteland, and to improve the soil stability and soil quality

Method used

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  • Method for improving soil by utilizing argillaceous shale weathered substance and application of method
  • Method for improving soil by utilizing argillaceous shale weathered substance and application of method
  • Method for improving soil by utilizing argillaceous shale weathered substance and application of method

Examples

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Effect test

Embodiment 1

[0026] This embodiment provides a test of the effect of the method for improving soil by utilizing argillaceous shale weathering on soil physical and chemical properties.

[0027] The experimental project area belongs to the warm temperate continental semi-arid and semi-humid climate zone. Many and sunny in late autumn. The average annual temperature is 8.3-12.3°C, the extreme maximum temperature is 39.7°C, the extreme minimum temperature is -16°C, and the active accumulated temperature greater than or equal to 10°C is 2814.6-4013.2°C, so one crop has more than two crops, and the average annual precipitation is 554.5mm , 54% concentrated in the three months of July, August and September, with an average frost-free period of 206 to 208 days. The annual total solar radiation is 127.6kCal / cm 2 , the annual average sunshine is 2356.6h, the dominant wind direction is the southeast and northwest monsoons, and the maximum frozen soil depth is 53cm.

[0028] like figure 1 As shown...

Embodiment 2

[0043] This embodiment provides a test of the influence of a method for improving soil by utilizing argillaceous shale weathering on changes in soil moisture.

[0044] The test grouping and the source of test raw materials are the same as those in Example 1. The test simulation is carried out through the Hydrus software, combined with the indoor water irrigation test, to further verify the water migration law under the mixed soil configuration of different argillaceous shale weathered materials and soil. The test soil and argillaceous shale weathered material were collected from the land remediation project area. The soil sampling depth is 0-40cm, the soil samples are naturally air-dried after collection, the soil with good properties is ground through a 2mm sieve, and the argillaceous shale weathered with diameters <1cm, 1-3cm, 3-5cm, and three particle sizes, as a backup. Three kinds of argillaceous shale weathered particle sizes were set for each, and the weathered materia...

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Abstract

The invention provides a method for improving soil by using argillaceous shale weathered matter and application thereof, and the method comprises the following steps: air-drying and crushing argillaceous shale, sieving with a 2cm sieve to obtain the argillaceous shale weathered matter, and mixing the argillaceous shale weathered matter with soil in a to-be-improved area according to a volume ratio of 1: 1-1: 5; the soil of the to-be-remedied area comprises loess soil or ancient soil. Through a mixing test of the argillaceous shale weathered substance and different soils, within a certain proportion range, the content of organic matters and total nitrogen in the soil can be effectively increased by adding the argillaceous shale weathered substance, soil nutrients are increased, and the argillaceous shale weathered substance has extremely high application value for reducing the clay content of the soil in a to-be-regulated area and improving the texture condition of the soil.

Description

technical field [0001] The invention belongs to the technical field of land engineering, relates to a soil improvement method, and in particular relates to a method for improving soil by utilizing argillaceous shale weathered material and its application. Background technique [0002] Land consolidation projects are an important way and an effective measure to increase arable land. At present, land consolidation projects have been implemented for many years, and the area of ​​newly increased arable land has increased by a considerable amount, but the quality of some of the newly increased arable land is not optimistic. This is because these newly increased cultivated lands mainly come from unused and difficult-to-use lands with low soil quality and poor planting effects, such as waste grassland, abandoned industrial and mining land, saline-alkali land, and gravel land. The quality of newly-added cultivated land in some areas cannot meet the needs of normal cultivation. If so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/00
CPCA01B79/00
Inventor 韩霁昌张盼盼孙增慧雷娜张庭瑜申江龙夏利恒张静黎雅楠孙语彤苏远逸
Owner 陕西地建土地工程技术研究院有限责任公司
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