吉林省集安市红皮病人参参地土壤地球化学特征

Soil Geochemical Characterics with Ginseng Red Skin Sickness in Ji'an City,Jilin Province

以吉林省集安市人参主产区土壤地球化学调查资料为基础,通过红皮病参地与正常参地元素含量对比,探讨了红皮病参地的地球化学环境问题。研究结果表明,红皮病参地土壤CaO、MgO、Sr明显高于正常参地,土壤pH值也有所升高。在地势相对平缓的地貌条件下,一方面土壤滞水使土壤溶液处于相对还原环境,易于形成Fe2+、Mn2+;另一方面由于排水不畅,土壤溶液离子强度增大,促进了Fe2+、Mn2+的溶解。在局部平缓滞水微地貌环境中,土壤可溶性盐增高是人参红皮病的重要地球化学因素。

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,Na_2O 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.