Chin J Plan Ecolo ›› 1990, Vol. 14 ›› Issue (2): 160-164.
• Research Articles • Previous Articles Next Articles
Liu Guo-fan Deng Ting-xiu Zhou Lin Yang Si-yuna
Published:
Contact:
Abstract: The cycas distributed in the dry-hot inshajiang river valley in the south-subtropical region of China,infected by the cyanobacteria,form especial coral-like nodule clusters with multiply branches. The nodules are most numerous within 10cm below the soil surface. The living nodules of current seedlings amounted to 8 g per plant and those of over 100 year plants averaged 370 g. The nitrogen fixation activity is usually from 1.8 to 11.1 μmol/g·f·w·h-1 in the autumn, and is obviously influenced by light and soil moisture, Daily variation of N2-fixing activity has shown that it is mhcu higher in daytime than at night. Nitrogen fixation amount for the cycas varied from 0.64 to 18.68 mg/plant·h-1.This suggests that it may play a certain role in the nitrogen cycle of
Liu Guo-fan, Deng Ting-xiu, Zhou Lin,Yang Si-yuna. The root nodules and the nitrogen fixation property of the Cycas Panzhihuaensis[J]. Chin J Plan Ecolo, 1990, 14(2): 160-164.
Add to citation manager EndNote|Ris|BibTeX
URL: https://www.plant-ecology.com/EN/
https://www.plant-ecology.com/EN/Y1990/V14/I2/160