| 水分管理对Cd-Pb-Zn污染土壤有效态及水稻根际细菌群落的影响 |
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| 引用本文： | 李海龙,李香真,聂三安,李云云,郑朝元,王果.水分管理对Cd-Pb-Zn污染土壤有效态及水稻根际细菌群落的影响[J].农业环境科学学报,2018,37(7):1456-1467. |
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| 作者姓名： | 李海龙 李香真 聂三安 李云云 郑朝元 王果 |
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| 作者单位： | 福建农林大学资源与环境学院福建省土壤环境健康与调控重点实验室;中国科学院成都生物研究所环境与应用重点实验室环境微生物四川省重点实验室 |
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| 基金项目： | 国家自然科学基金促进海峡两岸科技合作联合基金项目（U1305232） |
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| 摘 要： | 在镉-铅-锌污染土壤上,为了探究水稻根际细菌群落多样性及结构在不同水分条件下的动态变化,采用高通量测序技术,研究了连续淹水(CF)和干湿交替(IF)两种水分模式下,镉-铅-锌复合污染的农田土壤在水稻分蘖期和成熟期根际区细菌群落组成和多样性,以揭示水稻根际区细菌群落在两种水分调控下的响应机制。研究结果表明,水分管理对土壤中Cd、Pb、Zn、Ni有效性和有效N和P含量影响显著。在水稻分蘖期,CF处理Cd、Pb、Zn、Ni有效性显著高于IF处理;到了成熟期,其Cd、Pb、Zn含量显著低于IF土壤。有效N含量在水稻分蘖期,CF处理土壤显著高于IF处理;而在两个生长时期,IF处理的有效P含量均显著高于CF处理土壤。水分管理对细菌群落α多样性影响主要表现在水稻分蘖期,主要是不同水分条件和土壤理化性质共同作用的影响。细菌群落丰度组成在水稻两个生育时期表现均有差异。在水稻分蘖期,淹水处理下的肠杆菌科(Enterobacteriaceae)和莫拉菌科(Moraxellaceae)的相对丰度高于干湿交替处理,其丰度与土壤Zn、Ni和Pb有效量之间呈显著正相关;干湿交替处理Planococcaceae群落相对丰度高于淹水处理,其丰度与有效P之间呈正相关。到了成熟期,在淹水环境下地杆菌科(Geobacteraceae)和粘球菌(Myxococcaceae)的相对丰度高于干湿交替处理,地杆菌科(Geobacteraceae)的丰度与有效P之间呈负相关。在植稻初期,土壤重金属的有效性是影响细菌群落结构的主要因素,随着植稻时间的延长,土壤养分转而成为决定根际细菌群落变动的关键因素。
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| 关 键 词： | 连续淹水 干湿交替 复合污染 生长时期 根际 细菌群落 |
| 收稿时间： | 2018/6/1 0:00:00 |
Effects of two flooding methods on bio-available Cd-Pb-Zn contents of contaminated paddy soil and bacteria community in rice rhizosphere |
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| LI Hai-long,LI Xiang-zhen,NIE San-an,LI Yun-yun,ZHENG Chao-yuan and WANG Guo.Effects of two flooding methods on bio-available Cd-Pb-Zn contents of contaminated paddy soil and bacteria community in rice rhizosphere[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2018,37(7):1456-1467. |
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| Authors: | LI Hai-long LI Xiang-zhen NIE San-an LI Yun-yun ZHENG Chao-yuan and WANG Guo |
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| Institution: | College of Resources and Environment, Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, Fujian Agriculture and Forestry University, Fuzhou 350002, China,College of Resources and Environment, Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, Fujian Agriculture and Forestry University, Fuzhou 350002, China;Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China,College of Resources and Environment, Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, Fujian Agriculture and Forestry University, Fuzhou 350002, China,College of Resources and Environment, Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, Fujian Agriculture and Forestry University, Fuzhou 350002, China,College of Resources and Environment, Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, Fujian Agriculture and Forestry University, Fuzhou 350002, China and College of Resources and Environment, Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, Fujian Agriculture and Forestry University, Fuzhou 350002, China |
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| Abstract: | |
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| Keywords: | continuous flooding intermittent flooding complex contaminated growth stage rhizosphere bacteria community |
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