Pedosphere 10(2): 159--163, 2000
ISSN 1002-0160/CN 32-1315/P
©2000 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Evaluation of N2-fixation capacity of leguminous shrub plants |
| SHI Shu-Lian, DU Li-Juan, CAO Ya-Cheng and SUN Guo-Qing |
| Institute of Soil Science, the Chinese Academy of Sciences, P.O. Box 821, Nanjing 210008 (China) |
| ABSTRACT |
| N2-fixation percentages in the aerial parts of the first and second cuttings of five species of leguminous shrub plants, i.e., Lespedeza formosa (Vog.) Koehne from Jiangxi, Lespedeza pilosa (Thunb.) Sieb et Zucc., Lespedeza formosa (Vog.) Koehne from Zhejiang, Cajanus cajan (L.) Millsp. and Indigofera pseudotinctoria Mats., of three genera were investigated in terms of pot culture experiment using natural 15N abundance method with Bischofia javanica Bl., Camptotheca acuminata Decne. and Gardenia jasminoides Ellis as reference plants. Results showed that the N2-fixation percentages were different for the three genera of leguminous shrubs but almost the same for three species in the same genus. I. pseudotinctoria Mats. had the highest N2-fixation percentage in its aerial part, and then followed by Lespedeza and C. cajan. The N2-fixation percentages in the aerial parts of the plants that had grown for three years tended to be lower than those of the one-year-old plants except L. formosa (Vog.) Koehne from Zhejiang and L. formosa (Vog.) Koehne from Jiangxi. |
| Key Words: leguminous shrub, natural 15N abundance method, N2-fixation percentage |
| Citation: Shi, S. L., Du, L. J., Cao, Y. C. and Sun, G. Q. 2000. Evaluation of N2-fixation capacity of leguminous shrub plants. Pedosphere. 10(2): 159-163. |
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