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采集2887个样品分析制图,揭示出大庆地区土壤有效态Cu、Zn、Fe、Mn的含量水平和分布规律,并对该地区不同土壤类型的微量元索含量和有效性做了分析评价,肯定了大多数土壤普遍缺Zn和一定程度上Fe、Mn供给不足,是营养障碍发生的直接土壤因素。从成土母质和成土过程造成的土壤理化性质分析了导致微量元素供给不足的原因;土壤沙化、盐碱化、高pH值、多石灰质和重碳酸盐等起主导作用。提出了改良和培肥土壤、推行合理种植制度、合理施用微量元素肥料及选择栽种耐缺植物种和品种等整治途径。
2887 samples were collected and analyzed to reveal the content and distribution of available Cu, Zn, Fe and Mn in Daqing area. The content and availability of trace elements in different soil types in Daqing area were analyzed and evaluated. Most of the soil is generally deficient in Zn and, to some extent, Fe and Mn are under-supplied and are the direct soil factor for malnutrition. The causes of insufficient supply of trace elements were analyzed from the soil physical and chemical properties caused by soil parent material and soil formation process. Soil desertification, salinization, high pH, calcareous and bicarbonate played a leading role. Proposed to improve and fertilize the soil, the introduction of a reasonable planting system, the rational use of trace element fertilizers and choose to plant resistant species and varieties of remediation approaches.