Effect of AMF Inoculation and Root Separation on Plant Growth and Phosphorus Accumulation in Soybeans Growing on Purple Soil under Intercropping Conditions(PDF)

¡¶´ó¶¹¿Æѧ¡·[ISSN:1000-9841/CN:23-1227/S]

Issue:

2015Äê03ÆÚ

Page:

436-441,448

Research Field:

Publishing date:

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Title:

Effect of AMF Inoculation and Root Separation on Plant Growth and Phosphorus Accumulation in Soybeans Growing on Purple Soil under Intercropping Conditions

Author(s):

JIA Guang-jun¹;  LIU Yong²;  GU Lin-jing¹;  ZHANG Nai-ming¹;  HOU Zeng-long¹;  DUAN Hong-ping¹; XIA Yun-sheng¹

1.College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China;?

2.Guangdong Institute of Eco-environment and Soil Sciences, Guangzhou 510650, China

Keywords:

Arbuscular mycorrhizal fungi;  Purple soil;  Intercropping soybean;  Roots separation;  Phosphorus

PACS:

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DOI:

10.11861/j.issn.1000-9841.2015.03.0436

Abstract:

Soybeans are often at a competitive disadvantage condition in the maize/soybean intercropping system.A pot experiment was conducted to study the possibility of enhancing phosphorus (P) uptake efficiency of intercropping soybeans through inoculating with arbuscular mycorrhizal fungi (AMF), and to provide scientific basis for the P management of soybean production in purple soil.The plant growth and P uptake by intercropped soybeans on purple soil were studied. The intercropping maize and soybean roots were separated by different conditions (not separated, nylon net separated, plastic cloth separated) and three different kinds of inoculation status ?Symbolh@@none-mycorrhizal (NM), Glomus mosseae (GM), Glomus etunicatum (GE) Symboli@@.The results showed that the mycorrhizal colonization rate of intercropping soybean roots under inoculation with GM or GE had no significant difference among different roots barriers.AMF inoculation inhibited the roots elongation of intercropping soybean, and GM inoculation could significantly improve the soybeans biomass, as well as make the soybeans uptake more P and grow better when the roots was not separated.While GE inoculation could not promote the P accumulation in soybeans. The effects of different roots separation on soybean was also different respectively. The soybean roots length under the plastic cloth treatment was the shortest, and soybean biomass under roots separation was greater than the treatment of the roots not separated.Without roots separated treatment, it could improve the P accumulation in soybeans. In all treatments, the treatment of GM inoculation and roots not separated was the best one for intercropping soybean plants growth and P accumulation.

References:

£Û1£ÝSmith S E, Read D J. Mycorrhizal symbiosis£ÛM£Ý. London: Academic Press, 1997:379-383

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