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1. Synergistic relationships between rice landrace and soil microbial diversity in the Yuanyang terraces of Yunnan Province (P.R. China) | |||
Yang Genhua,Fang Fei,He Xiahong,Yang Jing,Liu Ling,Su Youbo,Bao Wenjing,Michael A. Fullen,Li Chengyun | |||
Agronomy 10 November 2015 | |||
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Abstract:Microbial communities are critical for the stability and productivity of agro-ecosystems. Understanding the diversity, dynamics and functions of soil microbial populations is essential to improve agricultural productivity. Using Biolog-Eco technology, we studied relationships between rice varieties and the diversity of soil microbial communities in the Yuanyang rice terrace system OF Yunnan Province, China. Soil samples were collected at pre-transplantation and post-harvest of rice. Results showed that: 1) before transplanting rice, the Shannon and McIntosh indices of soil microbial communities did not differ significantly in fields planted with landraces and modern varieties, but significantly differed after one production season; 2) years of continuous cultivation of landraces resulted in high soil microbial background diversity values, and further improved the positive impact of landraces on soil microbial populations; 3) rice cultivation enhanced the ability of soil microbes to metabolize carbon; and 4) long-term cultivation of rice landraces was more effectively increase the microbe diversity and soil organic matter (SOM) than modern varieties. Grain yield and straw biomass of landraces exhibited less variation with altitude, which implied positive effects of soil microbial community on rice productivity. These results suggest that these rice landraces had better synergistic relationships with soil microbes, increase the diversity and keep the balance of organic materials in the field. Results imply that rice landraces have better synergistic relationships with local soil microbes, and soil microbial populations, as integral components of the terrace system, play crucial roles in the effective conservation of natural resources and thus contribute to sustainable development. | |||
TO cite this article:Yang Genhua,Fang Fei,He Xiahong, et al. Synergistic relationships between rice landrace and soil microbial diversity in the Yuanyang terraces of Yunnan Province (P.R. China)[OL].[10 November 2015] http://en.paper.edu.cn/en_releasepaper/content/4660962 |
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