微量营养元素是植物正常生育不可缺少的养分,它的生理作用是氮磷钾不可代替的。土壤中微量元素供给不足时,农作物会出现缺素病害,引起体内生理功能失调,导致作物产量,质量也显著降低。为了摸清我省土壤中有效微量元素含量丰缺情况,按黑土、碳酸盐草甸黑钙土、草甸土、砂土等主要土壤亚类采样。采耕层土 Micronutrients are indispensable to the normal fertility of plants nutrients, its physiological role is irreplaceable NPK. When the supply of trace elements in the soil is inadequate, the crops will suffer from deficiency diseases and cause physiological dysfunction in the body, resulting in a significant decrease in crop yield and quality. In order to find out the abundance of available trace elements in soils in our province, sampling was made according to the major soil sub-categories of black soil, carbonate meadow chernozem, meadow soil and sand soil. Tillage layer soil