A New Idea to Improve the Test Method of Soil Aggregate Stability for Soils with a Texture Gradient

It is of great significance to determine soil aggregate stability in predicting agricultural production conditions and erosion risk. However, the problem exposed process evaluating cannot be ignored: Can effects different mechanisms on degree breakdown distinguished by selecting ethanol water as dispersion media? Based this question, natural soils with a gradient textures silty loam loamy clay were used test materials. Deionized water, hexane employed soaking solutions quantitatively analyze extent which aggregates dispersed static disintegration experiments. The results suggested that hydrophilicity (SH) six texture >1 comparing index (ABI) undergoing dispersion. This indicated hydrophilic group (-OH) contained interacted surfaces particles. Therefore, (hydration) should determined ABI values From clay, average contribution hydration fragmentation decreases, characterized size selectivity. When fragmented into 2–0.25 mm fractions, for sandy loam, 0.002–0.02 <0.002 particles preferentially moved; >0.002 moved. <0.25 fractions textures, all exhibited preferential migration characteristics. work provides an idea improving methods measurements future.