Trace elements fertilizer is rarely used in this region which leading to a decrease on the content of soil available iron, available Manganese, and available copper.
当地农户施用微量元素肥料很少，造成土壤有效铁、有效锰和有效铜含量的下降。
Trace elements fertilizer is rarely used in this region which leading to a decrease on the content of soil available iron, available Manganese, and available copper.
当地农户施用微量元素肥料很少，造成土壤有效铁、有效锰和有效铜含量的下降。
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