Liangshan Prefecture tobacco soil particle surface characteristics of the sub-type
Abstract:In order to understand the tobacco soil particle surface fractal dimension D of the characteristics of changes and to Huili County of Liangshan Prefecture tobacco soil,for example,studied the texture of the topsoil of different particle surface fractal dimension (D) Characteristics and with soil texture,grain size,organic matter and total nutrient content of relationships.The results show that D ranged between 2.1494 2.8330,the same types of soil texture fractal dimension D are great differences,with the soil texture from tight sand,sandy loam to light loam,fractal dimension D was increasing trend; soil particle surface the fractal dimension D with the grain size between the particle concentration in a very significant linear regression relationship; the grain size fractal dimension D of the direct contribution to decreasing order as follows:clay "sand" powder,regardless of which one grain size of the particles were increased,through the other two grain size of the particle content of the indirect effects will make the fractal dimension D increases; soil organic matter content,soil total nitrogen content and D respectively,there was a significant positive correlation,while the total soil phosphorus content,soil total potassium and D,respectively there was a significant negative correlation.Soil particle composition and the total nutrient content,etc.on the fractal dimension D can have a tremendous impact,through the analysis of the relationship between them can be integrated physical and chemical properties of soil to provide a scientific basis for quantitative assessment.
Key words:soil particle composition; soil texture; fractal dimension feature