[Population structure and ecological distribution of rhizospheric microorganisms of Angelica sinensis].
OBJECTIVE
To study the population structure and ecological distribution of the rhizosperic microorganisms of Angelica sinensis.


METHODS
The isolation, culture and identification of microorganisms were studied by the biological methods, and the achieved data were analyzed by the statistical methods for analysis of species diversity.


RESULTS
With the growing stages of A. sinensis from Min county of Gansu province, Heqing of Yunnan province and Baoxing of Sichuan province, the quantity of rhizosperic microorganisms increased; and it had reduced since October. In the area of Min county Gansu province, the number ratio of bacteria and fungi was higher than that in the other two areas. In addition, the population diversity and dynamic change were different in three areas. In the area of Min county Gansu province, the number of dominant microbial populations and the population diversities of bacteria, actinomyces and fungi in the rhizosphere were greater than those in the other two areas.


CONCLUSIONS
The microecological system and microbial population structure in the rhizosphere of Min county Gansu province were stable. And it was suitable for the growth of A. sinensis in this area.
Jiang
Shu
S
Nanjing University of Traditional Chinese Medicine, Nanjing 210046, China.
Duan
Jin'ao
J
Yan
Hui
H
Yu
Guang
G
D029971:Angelica sinensis / Q000382:microbiology*; D001419:Bacteria / Q000145:classification / Q000302:isolation & purification*; D044822:Biodiversity; D005658:Fungi / Q000145:classification / Q000302:isolation & purification*; D018517:Plant Roots / Q000382:microbiology; D012988:Soil Microbiology