A study of J. Nicholas Tosca et. al. (2014), W.M. (2000) and Post the Know K.C. said that clay particles are composed of various minerals and อินทรีย, which affect the quantity of carbon in the soil, but a study of Juhwan Lee et.al. (2009) found that the density of the soil and particles of soil. Affect the quantity of carbon in the soil is less than. Land utilization and management system of cultivation
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