石灰性土壤中有效性铜、铁、锰、锌测定方法的探讨

闫素珍孙祥春杜瑞芬贾方亮

Issues on the Determination Method of Available Copper,Iron,Manganese and Zinc in Calcareous Soil

北方农业学报 . 2009, (5): 45 -45 .