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第 6 期                 徐慧芳 等:不同耕作模式对稻田土壤真菌丰度及群落结构的影响                                        41

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                   Effects of farming patterns on abundance and community structure of

                                                  fungi in paddy soils



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                    XU Huifang ,WAN Ziwei ,SHENG Rong ,WEI Wenxue ,ZHANG Wenzhao ,HUANG Guoqin          1
                     1.Center for Ecological Sciences,Jiangxi Agricultural University,Nanchang 330045,China;
               2.Taoyuan Station of Agro-Ecology Research,Institute of Subtropical Agriculture,Chinese Academy of Sci⁃
                  ences/Key Laboratory of Agro-Ecological Processes in Subtropical Regions,Changsha 410125,China
                   Abstract   Four farming patterns including double rice(DR),middle rice(MR),middle rice-rape‐

               seed rotation(MROR),and middle rice-pakchoi-rapeseed rotation(MRPOR)in a long-term(10 years)
               practices were selected to analyze the abundance and differences in community structure of fungi under dif‐
               ferent farming systems in China. The abundance and community composition of fungi in paddy soils were
               determined by real-time fluorescence quantitative PCR and high-throughput sequencing to analyze the differ‐
               ences in the abundance and community structure of fungi in soil under different farming patterns and their in‐
               fluencing factors. Results showed that MR,MROR and MRPOR had a significant influence on the abun‐
               dance of fungi. MRPOR increased the abundance of fungi. The result of correlation analyses showed that ni‐
               trate nitrogen was significantly and positively correlated with the abundance of fungi. The crop rotation had
               a significant influence on the gene community structure of fungi in soil. The result of redundancy analyses
               showed that the content of soil water was the most significant factor affecting the community structure of
               fungi. In conclusion,the abundance,composition and diversity of communities of fungi in soil were differ‐
               ent under different farming patterns of rice. The abundance of fungi was greatly affected by the content of
               nitrate nitrogen in soil under different farming patterns,and the community structure of fungi was mainly af‐
               fected by the content of water in soil.
                   Keywords    paddy field;soils;farming patterns;fungi;abundance;community structure;paddy-up‐
               land rotation field


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