• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Microbiology >Phylogenetic and Multivariate Analyses To Determine the Effects of Different Tillage and Residue Management Practices on Soil Bacterial Communities
【24h】

Phylogenetic and Multivariate Analyses To Determine the Effects of Different Tillage and Residue Management Practices on Soil Bacterial Communities

机译：系统发育分析和多元分析，以确定不同耕作和残留管理措施对土壤细菌群落的影响

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Bacterial communities are important not only in the cycling of organic compounds but also in maintaining ecosystems. Specific bacterial groups can be affected as a result of changes in environmental conditions caused by human activities, such as agricultural practices. The aim of this study was to analyze the effects of different forms of tillage and residue management on soil bacterial communities by using phylogenetic and multivariate analyses. Treatments involving zero tillage (ZT) and conventional tillage (CT) with their respective combinations of residue management, i.e., removed residue (?R) and kept residue (+R), and maize/wheat rotation, were selected from a long-term field trial started in 1991. Analysis of bacterial diversity showed that soils under zero tillage and crop residue retention (ZT/+R) had the highest levels of diversity and richness. Multivariate analysis showed that beneficial bacterial groups such as fluorescent Pseudomonas spp. and Burkholderiales were favored by residue retention (ZT/+R and CT/+R) and negatively affected by residue removal (ZT/?R). Zero-tillage treatments (ZT/+R and ZT/?R) had a positive effect on the Rhizobiales group, with its main representatives related to Methylosinus spp. known as methane-oxidizing bacteria. It can be concluded that practices that include reduced tillage and crop residue retention can be adopted as safer agricultural practices to preserve and improve the diversity of soil bacterial communities.
机译：细菌群落不仅对有机化合物的循环很重要，而且对维持生态系统也很重要。由于人类活动（例如农业实践）引起的环境条件变化，特定细菌群体可能会受到影响。这项研究的目的是通过系统发育和多元分析来分析不同耕作形式和残留管理对土壤细菌群落的影响。从长期角度选择涉及零耕种（ZT）和常规耕种（CT）的处理方法，以及它们各自的残留物管理组合，即去除残留物（ΔR）和保留残留物（+ R），以及玉米/小麦轮作。 1991年开始进行田间试验。对细菌多样性的分析表明，零耕作和农作物残余物保留（ZT / + R）下的土壤具有最高的多样性和丰富度。多变量分析表明，有益的细菌群如荧光假单胞菌属。残留物（ZT / + R和CT / + R）有利于伯克霍尔德氏菌和伯克霍尔德氏菌，而残留物去除（ZT /ΔR）则对伯克霍尔德氏菌不利。零耕法（ZT / + R和ZT /ΔR）对根瘤菌组具有积极作用，其主要代表与甲基肌球菌有关。被称为甲烷氧化细菌。可以得出结论，包括减少耕种和残留农作物的做法可以作为更安全的农业做法来采用，以保持和改善土壤细菌群落的多样性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号