[1]ZHANG Haiou,GUO Zhen,XU Yan,et al.Dynamic Change Characteristics of Texture and Organic Matter Content of Soft Rock and Sand Compound Soil in Mu Us Sandy Land[J].Research of Soil and Water Conservation,2021,28(02):93-98.
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Dynamic Change Characteristics of Texture and Organic Matter Content of Soft Rock and Sand Compound Soil in Mu Us Sandy Land
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 02
Page number:
93-98
Column:
Public date:
2021-02-06
- Title:
- Dynamic Change Characteristics of Texture and Organic Matter Content of Soft Rock and Sand Compound Soil in Mu Us Sandy Land
- Keywords:
- soft rock and sand compound soil; planting years; texture; fractal dimension; quality succession
- CLC:
- S152.3; S153.6+21
- DOI:
- -
- Abstract:
- In order to study the soil quality development status of a new type of mixed composite soil of soft rock and sand in the Mu Us sandy land during the long-term planting process, based on the field positioning test of different proportions of soft rock and sand compound soil(1:1, 1:2, 1:5)from 2010 to 2018, the change characteristics of soil mechanical composition, particle fractal dimension and organic matter content and the relationship between them were comprehensively analyzed. The results show that: with the increase of planting years, the textures of cultivated layer of the three proportion compound soils have become thinner and better; the particles fractal dimension and organic matter content of compound soil generally showed an increasing trend, among which the increase rates of 1:2 compound soil silt and clay content, fractal dimension value and organic matter content were all greater than 1:1 and 1:5; the organic matter content of the 1:2 compound soil reached the highest value(6.24±0.30 g/kg)after nine years, which was 12 times higher than that before planting; there was a significant positive correlation between the fractal dimension and the organic matter content of compound soil in different proportions(p<0.05), silt and clay are the two most critical grain sizes for the improvement of compound soil texture and organic matter in the study area; the 1:2 ratio compound soil was determined to be most suitable for maize cultivation, as it best developed a composite state of inorganic and organic colloids that improved the soil stability and subsequent agricultural suitability.
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Last Update:
2021-02-10