| 钾在云南三种类土壤中的渗透流失 |
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| 引用本文： | 刘大永,别之龙,万兆良,张晓海,雷永和,殷端,陈观宏.钾在云南三种类土壤中的渗透流失[J].核农学报,1997,11(1):0-0. |
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| 作者姓名： | 刘大永 别之龙 万兆良 张晓海 雷永和 殷端 陈观宏 |
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| 作者单位： | [1]西南农业大学 [2]云南省烟草研究所 |
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| 摘 要： |
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| 关 键 词： | 烟草 土壤 钾 流失 |
| 收稿时间： | 2009-12-31 |
| 修稿时间： | 2009-12-31 |
THE PERMEABLIITY AND LOSS OF POTASSIUM IN THREE TYPES OF YUNNAN SOIL MEASURED BY USING 86 Rb |
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| Abstract: | The permeability and loss of potassium in three types of soil (purple, paddy and red soil) used for planting tobacco in Yunnan province were studied by using 86 Rb tracer method. The results showed that for the treatment of 0.1gK 2O/kg soil, the potassium loss in soils was in order of purple soil>paddy soil>red soil. The loss of potassium in purple soil and paddy soil increased with sampling time. In the same soil, the loss of potassium was fast with the treatment of 0.1gK 2O/kg soil, but it was slow with the treatment of 0.2gK 2O/kg soil and 0.3gK 2O/kg soil. The potassium residucs in soil surface was in order of red soil>paddy soil>purple soil. And the amounts of potassium in soil surface was positively correlated with potassium added. With the increase of soil depth, a slight decrease of potassium residue was found for the treatment of 0.2gK 2O/kg soil and 0.3gK 2O/kg soil, while a slight increase for the treatment of 0.1gK 2O/kg soil. |
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| Keywords: | 86Rb tobacco loss of potassium soil |
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