利用我省丰富而廉价的粘土资源，配合施加碱性物质，可更进一步提高土壤“抵抗力”，确保重金属镉超标区植物的安全。
The rich and cheap clay resources, assorted with alkaline materials, may further improve the resistibility of soils, and therefore secure the safety of plants in over criteria of heavy metal cadmium.
并首次对该区域土壤中有害性重金属元素的现状作了评述，进而提出了合理利用本区域土壤资源的建议。
The comment has been made on present harmful heavy-metal elements in the soil along this lake area, and a suggestion has been put forward on the rational use of the soil resources in this lake area.
黄河流域重金属污染是水资源利用的一个制约因素。
The pollution by heavy metals was a Limited factor for the water resources use.
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