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Effects of inoculation with AM fungi on maize P uptake and soil P forms in a coal mining subsidence area*(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

Issue:
2020 01
Page:
1-8
Research Field:
Articles
Publishing date:

Info

Title:
Effects of inoculation with AM fungi on maize P uptake and soil P forms in a coal mining subsidence area*
Author(s):
LV Jianyu12GAO Wenjun3NIU Qun124 HAO Xianjun 12**ZHANG Kaijue12ZHANG Jie12 HONG Jianping 12
1 College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801,China
2 National Experimental Teaching Demonstration Center for Agricultural Resources and Environment, Shanxi Agricultural University, Taigu 030801,China
3 College of Resources and Environment, Shanxi Agricultural University, Taigu 030801,China 4 VRM Global Holding Pte Ltd, 43 Mosque Street #02-03, 059521, Singapore
Keywords:
AM fungi coal-mining subsidence reclamation soil Hedley P forms P availability
CLC:
-
PACS:
DOI:
10.19675/j.cnki.1006-687x.2019.04041
DocumentCode:

Abstract:
It is a hot issue in the field of ecology and environmental science that arbuscular m ycorrhizal (AM) fungi is used in bioremediation research in fragile mining area. Many researches have shown that AM fungi promote plants to absorb soil P, while the effect with different AM fungi on soil P forms and its transformation and soil P availability was barely reported. Therefore a pot experiment was conducted with inoculation with three AM fungi, including Claroideoglomus etunicatum (Ce ) , Glomus Mosseae (Mo) and Rhizophagus intraradices (Ri), respectively, with no inoculation AM fungi as the control (CK). Across consecutive two years corn planting (2015-2016), the AM fungal colonization rate, corn P uptake and changes of soil P forms were analyzed. The results showed that: (1) inoculation with three AM fungi was successfully formed a symbiotic relationship with corn roots with the colonization rate in the order of Ce ≥ Mo ≥ Ri during the consecutive two years planting, although the colonization rate with the second planting (38.3%-68.8%) was higher than that (14.5%-32.5%) with the first season,(2) the inoculation treatment with AM fungi significantly increased maize P uptake by 25.5%-82.0%, (3) the inoculation treatment with three AM fungi significantly increased the content of soil active inorganic P (H2O-Pi, NaHCO3-Pi) and medium active inorganic P (NaOH-Pi),while no significant effect on moderately stable P (HCl-P) and stable P (residue-P); inoculation treatments with Mo and Ce had the highest values on soil NaHCO3-Pi, which increased by 141.02% and 88.47% respectively, followed by Ri (with the increase of 43.12%); (4) and inoculation with Mo and Ri increased soil medium active inorganic P(NaOH-Pi) by 36.15% and 18.82% relative to the value of CK. In a word, inoculation with AM fungi increased root colonization rate, maize P uptake and soil P transformation into active and medium active inorganic P (H2O-Pi、NaHCO3-Pi、NaOH-Pi)thus soil P availability was increased. Of the treatments, inoculation with Ce and Mo were the economic and effective genus since they improved corn P uptake and soil P transformation into bio-availability in this coal-mining subsidence reclamation area.

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Last Update: 2019-06-19