Land resources are used as the main factors in continuous cultivation and for a long time. There is a possibility that arsenic contamination from soil leaching leaching occurs naturally accumulate in soil.
With the use of soil resources is a primary factor in the crop continuously and for a long time. There is a possibility that the arsenic contamination of groundwater by leachate accumulated in the soil.
The use of soil resources are the main factors in the cultivation and continuously for a long time. There is a possibility that arsenic contamination from natural soil was accumulated in soil leaching