| 摘要: |
| 天津市水土环境地球化学调查发现了大面积的富钾土地资源，该文利用调查数据圈定富钾土地资 源区，并对其储量进行估算，目的是为保护和合理利用富钾土地资源提供科学依据。依据土壤全钾含量大 于2.5%圈定了8个富钾土地资源区，主要分布在宁河-汉沽地区，其次分布在蓟县山区。蓟县富钾土地 由富钾岩石风化形成，宁河-汉沽富钾土地形成与退海古泻湖有关。富钾土地资源区总面积约1 303.17km 2 ，耕植层（0～20cm）和0～100cm土体中估算全钾总储量分别为8 638.36t和47 327.65t。 |
| 关键词: 富钾 成因 钾储量 土地利用建议 |
| DOI：10.7621/cjarrp.1005-9121.20110613 |
| 分类号: |
| 基金项目:资料来源：天津市水土环境地球化学调查，津城调任[2005]006 |
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| ASSESSMENT OF POTASSIUM-RICH LAND RESOURCES IN TIANJIN |
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Cao Shuping, Cheng Xujiang
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Tianjin geologic institute， Tianjin 300191
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| Abstract: |
| A present survey found that there were large areas of potassium-rich land resources in Tianjin. This pa- per delineated some potassium-rich land resources using surveying data and estimated the storage， aiming to provide scientific basis for protecting and rationally utilizing the land resources. The potassium-rich land resources can be divided into 8 areas according to the potassium content >2.5%， which mainly distributed in Jixian and Ninghe- Hangu. The potassium-rich lands in Jixian were shaped due to the rock decay， while the lands in Ninghe-Hangu were related to the ancient lagoon. The total area of potassium-rich land was 1303.17km 2 ， and the storage of the soil potassium content in the depth of 20cm and 100cm were about 8638.36t and 47327.65t， respectively. |
| Key words: abundant potassium genetic analysis potassium reserves suggestions |
