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首页> 外文期刊>Journal of soils & sediments >Spatiotemporal differences in the arbuscular mycorrhizal fungi communities in soil and roots in response to long-term organic compost inputs in an intensive agricultural cropping system on the North China Plain
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Spatiotemporal differences in the arbuscular mycorrhizal fungi communities in soil and roots in response to long-term organic compost inputs in an intensive agricultural cropping system on the North China Plain

机译：土壤和根源丛枝菌根群落的时尚差异，以响应北中国强化农业种植制度的长期有机堆肥投入

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摘要

Purpose: Fertilizer management is important for minimizing nutrient losses from intensive agroecosystems. An increasing amount of organic fertilizer has been applied to overcome the problems associated with mineral fertilizers. Thus, an understanding of the diversity and community structure changes in arbuscular mycorrhizal fungi (AMF) in response to long-term organic fertilizer management can be potentially significant in the development of nutrient management strategies.Materials and methods: Here, a study was conducted to investigate the vertical distribution of AMF in a calcareous field and the temporal structure of AMF in maize roots with different levels of continuous fertilization over a 13-year period. T-RFLP and clone library construction were used to investigate AMF community in this study. Canonical correspondence analysis was performed to determine the significance of environmental variable that may affect the AMF community composition.Results and discussion: Our results showed that the Shannon-Weiner and evenness indexes of soil AMF community decreased, while AMF richness was not significantly affected. Organic compost application reduced root colonization, while the negative influence of conventional inorganic fertilization was minor. The effect was significant at 13 leaf collar stage of maize. Crop phenology especially growth stages might override fertilizer supply in determining the community composition of active root inhabiting AM fungi. Significant differences in the community structure of soil AMF were observed between control and organic compost treatments in surface soil, and the community shift was primarily attributable to soil organic matter and nutrient contents (total nitrogen and carbon, Olsen-P, and exchangeable K). Vertical distribution of AMF was significantly related to soil electrical conductivity and pH values.Conclusions: Our results indicated that AMF community assemblage was complex and dependent on fertilization-mediated changes in soil properties, soil depth, and crop phenology. The modification of AMF communities by fertilization may have great impact on soil health and ecosystem services in intensive agroecosystems.
机译：目的：肥料管理对于最大限度地减少密集农业系统的营养损失是重要的。已经应用了越来越多的有机肥料以克服与矿物肥料相关的问题。因此，在营养管理策略的发展中，对丛枝菌根真菌（AMF）的多样性和群落结构变化的变化可能在营养管理策略的发展中可能是显着的。材料和方法：在这里，进行一项研究探讨钙质田间AMF的垂直分布，在13年内，玉米根玉米玉米菌根的时间结构。 T-RFLP和克隆图书馆建设用于调查本研究中的AMF社区。执行规范对应分析以确定可能影响AMF群落组成的环境变量的重要性。结果和讨论：我们的结果表明，Shannon-Weiner和土壤AMF群落的均匀指数下降，而AMF丰富性没有显着影响。有机堆肥申请减少了根殖民化，而常规无机施肥的负面影响是轻微的。玉米13叶项圈效果显着。作物候选尤其是生长阶段可能会覆盖肥料供应，以确定活性根居住的AM真菌的群落组成。在表面土壤中的对照和有机堆肥治疗之间观察到土壤AMF的群落结构的显着差异，社区转变主要归因于土壤有机质和营养物质（总氮和碳，Olsen-P和可更换K）。 AMF的垂直分布与土壤导电性和pH值显着相关。结论：我们的结果表明，AMF群落组合复杂，依赖于施肥介导的土壤性质，土壤深度和作物候选的变化。通过施肥的修改AMF社区可能对密集农业系统的土壤健康和生态系统服务产生很大影响。

著录项

  • 来源
    《Journal of soils & sediments》 |2019年第5期|2520-2533|共14页
  • 作者

    Liu Wei; Zhang Yunlong; Jiang Shanshan; Murray Philip J.; Liao Liqin; Li Xiaolin; Zhang Junling;

  • 作者单位

    Jiangxi Agr Univ Coll Forestry Collaborat Innovat Ctr Jiangxi Typ Trees Cultivat Jiangxi Prov Key Lab Silviculture Nanchang Jiangxi Peoples R China|China Agr Univ Coll Resources & Environm Sci Key Lab Plant Soil Interact Ctr Resources Environm & Food Secur Minist Educ Beijing 100193 Peoples R China;

    China Agr Univ Coll Resources & Environm Sci Key Lab Plant Soil Interact Ctr Resources Environm & Food Secur Minist Educ Beijing 100193 Peoples R China;

    China Agr Univ Coll Resources & Environm Sci Key Lab Plant Soil Interact Ctr Resources Environm & Food Secur Minist Educ Beijing 100193 Peoples R China;

    Rothamsted Res Sustainable Agr Syst North Wyke EX20 2SB Okehampton England;

    Jiangxi Agr Univ Coll Forestry Collaborat Innovat Ctr Jiangxi Typ Trees Cultivat Jiangxi Prov Key Lab Silviculture Nanchang Jiangxi Peoples R China;

    China Agr Univ Coll Resources & Environm Sci Key Lab Plant Soil Interact Ctr Resources Environm & Food Secur Minist Educ Beijing 100193 Peoples R China;

    China Agr Univ Coll Resources & Environm Sci Key Lab Plant Soil Interact Ctr Resources Environm & Food Secur Minist Educ Beijing 100193 Peoples R China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    Arbuscular mycorrhizal fungi; Intensive agriculture; Maize; Long-term organic compost input; North China Plain;

    机译：丛枝菌根真菌;密集农业;玉米;长期有机堆肥输入;华北平原;

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