ISSN: 2376-130X
Xiong Li, Hang Li and Gang Yang
Soils are known to be “skin of the earth” and carry the material basis for human beings. As one of the basic disciplines of agriculture, soil science deals with the natural resources of the earth surface relating to soil formation, classification, morphology as well as associated physical, chemical, biological and fertility properties. Soils are a unique array of different substances naming clay minerals (e.g., montmorillonite and kaolinite), organic matters (e.g., humus), microorganisms (e.g., bacteria) as well as liquids (mainly moisture) and gases that are intercalated among clay mineral layers.