Abstract:

Based on the soil geochemical survey data of Ji’an City, the geochemical environment question of red skin sickness is discussed by the element comparison of normal ginseng land and sick ginseng land. The results showed that the contents of CaO, MgO, Na₂O and Sr in sick ginseng land were higher than those of normal ginseng land, and pH also rises.  Just under the gently rolling topography, Fe²⁺and Mn²⁺ were formed easily because the oxygen status of soil solution was reducing environment caused by the stagnant water. Otherwise, the dissolution of Fe²⁺ and Mn²⁺ were accelerated because the ionic strength of soil solution was increased. Thus the increment of soil soluble salt was the most geochemical factor for ginseng red skin sickness under the gently rolling topography.

Key words: ginseng, red skin sickness, soil, geochemistry, Ji’an City