我国相当面积的土壤缺乏硼、钼、锰、锌、铜等微量元素。①硼:东部地区低硼和缺硼,其中的南方是红壤区,北方是黄土和黄河冲积物发育的土壤。南方酸性土壤上施用石灰可能诱发缺硼或加重缺硼程度。②钼:在酸性土壤上容易缺钼。南方的广大红壤区属于缺钼地区,其全钼含量虽高,但可给性低,有效钼含量少。北方的黄土和黄河冲积物 A considerable area of ​​China’s lack of soil boron, molybdenum, manganese, zinc, copper and other trace elements. ① Boron: Low boron and boron deficiency in the eastern region, of which the south is red soil area, the north is the loess and Yellow River alluvial soil development. Applying lime to acidic soils in the south may induce boron deficiency or increase boron deficiency. ② molybdenum: easy to lack of molybdenum in acidic soil. The vast red soil region in the south belongs to the molybdenum-deficient region. Although its total molybdenum content is high, it can give low and effective molybdenum content less. Loess and Yellow River alluvial north