数字农科院2.0

Long-term rice-rice-green manure rotation changing the microbial communities in typical red paddy soil in South China

文献类型： 外文期刊

作者： Gao Song-juan;Cao Wei-dong;Gao Ju-sheng;Huang Jing;Bai Jin-shun;Zeng Nao-hua;Chang Dan-na;Gao Song-juan;Chang Dan-na;Zhang Ren-gang;Cao Wei-dong;Fan Yuan-yuan;Gao Ju-sheng;Huang Jing;Katsu-yoshi, Shimizu;Thorup-Kristensen, Kristian

作者机构：

关键词： green manure;community structure;community function;16S rRNA gene;double rice

期刊名称： JOURNAL OF INTEGRATIVE AGRICULTURE

ISSN： 2095-3119

年卷期： 2015 年 14 卷 12 期

页码：

收录情况： SCI

摘要： On the basis of a long-term (30 years) field experiment that involved four rotation systems, rice-rice-winter fallow (RRF), rice-rice-ryegrass (RRG), rice-rice-rape (RRP), and rice-rice-milk vetch (RRV), this study described the effects of green manure on the microbial communities in the red paddy soils using 454 pyrosequencing for the 16S rRNA gene. The Chao1 richness and non-parametric Shannon's index increased in all soil samples that received green manure treatments. The communities' structures with the green manure applications were significantly dissimilar from that under the winter fallow. Using Metastats tests, many genera in the RRG, RRP and RRV soils were significantly different from those in the RRF soil, including a number of genera that functioned in the nitrogen and sulfur cycles. Analyses of the genera with these functions revealed the shifts in microbial ecosystem functions after long-term green manuring. Changes in the microbial communities increased the ammonium supply and decreased the soil acidification in green-manure-amended soils. Together, these data suggested powerful effects of green manure on both the microbial communities and the biogeochemical cycle driven by the shifts in bacterial functional groups.

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