Pedosphere 2(4): 337--344, 1992
ISSN 1002-0160/CN 32-1315/P
©1992 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Effect of Potassium Nutrition of Different Varieties of Rice on the Redox Status in Microzone Rhizosphere Soils |
| CHEN JI-XING, XUAN JIA-XIANG, DU CHENG-LIN, XIE JIAN-CHANG |
| Institute of Soil Science, Academia Sinica, P. O. Box 821, Nanjing 210008 |
| ABSTRACT |
| Being divided into three groups-strong, moderate and weak-according to the different kinetic parameters (Fmax, km, Cmin) of potassium uptake by crops, 21 cultivars of rice have been studied to find out the relationships between their potassium nutrition and the oxidation-reduction status in the rhizosphere soils.Results show that, with no application of K fertilizer, there were higher contents of active reducing substances and ferrous iron in rhizosphere soils planted with cultivars, such as Zhongguo 91, week in absorbing potassium than in soils cropped with cultivars, Shanyou 64, stronger in absorbing potassium. |
| Key Words: |
| Citation: Chen, J. X., Xuan, J. X., Du, C. L. and Xie, J. C. 1992. Effect of Potassium Nutrition of Different Varieties of Rice on the Redox Status in Microzone Rhizosphere Soils. Pedosphere. 2(4): 337-344. |
|
View Full Text
|
|
|
|
