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Sandy soil-clay mixing method suitable for plant growth of strip mine dump

A technology of plant growth and open-pit mines, which is applied in the fields of soil preparation, chemical analysis by titration, and analysis through chemical reactions of materials, etc., which can solve problems such as poor soil structure

Pending Publication Date: 2022-01-18
国家能源集团陕西神延煤炭有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of sand-clay mixing method suitable for the growth of plants in the open-pit mine dumps in arid or semi-arid desert areas, aiming to form better soil by providing the best sand-clay mixing ratio Physical structures to address the poorly structured soils of existing open pit mine dumps in arid or semi-arid desert regions

Method used

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  • Sandy soil-clay mixing method suitable for plant growth of strip mine dump
  • Sandy soil-clay mixing method suitable for plant growth of strip mine dump
  • Sandy soil-clay mixing method suitable for plant growth of strip mine dump

Examples

Experimental program
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Effect test

example 1

[0058] In S3, when the volume ratio of sand to clay in the mixed soil is 1:1 and 1:2, and the growth indicators are plant height, number of leaves, and fresh weight of aboveground parts, the obtained index parameters are: plant height parameters (1:1), leaf number parameter (1:1) and shoot fresh weight parameter (1:1), and plant height parameter (1:2), leaf number parameter (1:2) and shoot fresh weight parameter (1:2).

[0059] In S4, the correlation coefficient between the index parameter and the root soil enzyme activity is obtained, and the index parameter whose correlation coefficient with the root soil enzyme activity is greater than or equal to the coefficient threshold (for example, 0.9) is used as the relevant index parameter, and the condition is met in this case The relevant index parameter is the plant height parameter (1:1) as an example, then the dominant growth index is the plant height.

[0060] In S5, the index parameters of the plant height in S3 (i.e. the pl...

example 2

[0062] S3 is the same as S3 in Example 1.

[0063] In S4, the correlation coefficient between the index parameter and the root soil enzyme activity is obtained, and the index parameter whose correlation coefficient with the root soil enzyme activity is greater than or equal to the coefficient threshold (for example, 0.9) is used as the relevant index parameter, and the condition is met in this case The related index parameters are plant height parameter (1:1) and leaf number parameter (1:2) as an example, then the dominant growth index is plant height and leaf number.

[0064]In S5, the index parameter (namely plant height parameter (1:1), plant height parameter (1:2), leaf number parameter (1:1) and leaf number parameter (1:2)) of plant height in S3 As the index parameters to be screened, select the optimal index parameter of each dominant growth index from the index parameters to be screened. This time, the two growth indexes of plant height and leaf number are used as examp...

Embodiment

[0070] (1) Provide sand and clay, and mix the sand and clay according to the volume ratio of 1:1, 1:2, and 2:1 respectively to obtain three groups of mixed soils. Put three groups of mixed soil into flower pots of the same specification (20 pots in each group).

[0071] (2) Alfalfa was planted in all flower pots respectively, 25 alfalfa seeds were sown in each pot, and watered regularly. On the 10th, 15th, 20th and 25th days of alfalfa growth, record the plant height, number of leaves and fresh weight of aboveground parts of each pot and take the average value respectively to obtain the respective values ​​of plant height, number of leaves and fresh weight of aboveground parts in each pot. Index parameters: On the 25th day of alfalfa growth, 5 alfalfa roots were randomly selected from each pot, and the root length and underground fresh weight were measured and averaged to obtain the respective indicators of root length and underground fresh weight in each pot parameter. In e...

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Abstract

The invention belongs to the technical field of ecological management, and particularly relates to a sandy soil-clay mixing method suitable for plant growth of a strip mine dump. According to the method, by measuring the correlation coefficient between the growth index of the plant and the root soil enzyme, the growth index having significant correlation with the root soil enzyme is obtained as the optimal growth index, and the corresponding mixing ratio under the optimal growth condition is screened from the growth conditions of the growth index under the sandy soil-clay mixing ratios with different volume ratios, so as to determine the sandy soil-clay mixing ratio suitable for the plant growth in the strip mine dump in the arid or semi-arid desert area. The mixing method can be used for guiding the strip mine dump to carry out scientific dumping according to the mixing ratio, so that the economic investment of coal mine reclamation can be reduced, the land utilization efficiency of coal mine reclamation can be improved, and the practical value is good.

Description

technical field [0001] The invention relates to the technical field of ecological management, in particular to a sandy soil-clay mixing method suitable for plant growth in open-pit mine dumps in arid or semi-arid desert areas. Background technique [0002] Large-scale open-pit coal mine dumps have been formed during coal mining. The huge volume of the dumps has changed the original landform and resulted in poor nutrients and poor soil structure, forming sand-covered areas. In order to alleviate the harm caused by open-pit coal mining, improve the ecological environment of the mining area, and improve the soil properties of the open-pit coal mine dump, land reclamation and ecological reconstruction in the mining area have been gradually paid attention to and carried out, and soil reconstruction is the key to land reclamation. core. Land reclamation of dump sites includes processes such as landform remodeling, soil reconstruction, and vegetation reconstruction. Among them,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/00A01B79/02G01N21/31G01N21/78G01N31/16
CPCA01B79/00A01B79/02G01N31/16G01N21/78G01N21/31
Inventor 雷志勇武永军刘慧辉
Owner 国家能源集团陕西神延煤炭有限责任公司
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