Pedosphere 3(3): 207--220, 1993
ISSN 1002-0160/CN 32-1315/P
©1993 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Behaviour of Potassium and Trace Elements in Rhizosphere of Flue-Cured Tobacco (Nicotiana Tabacum L.) |
| HU GUO-SONG, CAO ZHI-HONG, ZHOU XIU-RU, LI ZHONG-LIN, ZHANG XIN |
| Institute of Soil Science, Academia Sinica, P. 0. Box821, Nanjng 210008 |
| ABSTRACT |
| The study on the behaviourof potassium, phosphate and trace elements, Fe, Mn, Cu and Zn, in the rhizosphere of different varieties of flue-cured tobacco (Nicotiana tabacum L.) with high and low potassium application rate with rhizobag technique showed that soil available K, soil available P, and slow available K was in depletion status, whereas DTPA extractable Fe, Mn, Zn and Cu accumulated obviously in rhizosphere. The depletion and accumulation rates of mineral nutrients differed in degree with K application rate, soil type, and tobacco variety. The content of a vailable K in both rhizosphere and bulk soil and K concentration in tobacco leaf increased significantly, and the available P in rhizosphere dropped with more K applicatin. The DTPA-Fe content of red soil much lower in pH was higher than that of calcareous soil in bulk soil. |
| Key Words: |
| Citation: Hu, G. S., Cao, Z. H., Zhou, X. R., Li, Z. L. and Zhang, X. 1993. Behaviour of Potassium and Trace Elements in Rhizosphere of Flue-Cured Tobacco (Nicotiana Tabacum L.). Pedosphere. 3(3): 207-220. |
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