• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Environmental Management >Seasonal persistence of faecal indicator organisms in soil following dairy slurry application to land by surface broadcasting and shallow injection
【24h】

Seasonal persistence of faecal indicator organisms in soil following dairy slurry application to land by surface broadcasting and shallow injection

机译：通过地面广播和浅层注射将粪便施用到土地后，粪便指示生物在土壤中的季节性持久性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Dairy farming generates large volumes of liquid manure (slurry), which is ultimately recycled to agricultural land as a valuable source of plant nutrients. Different methods of slurry application to land exist; some spread the slurry to the sward surface whereas others deliver the slurry under the sward and into the soil, thus helping to reduce greenhouse gas (GHG) emissions from agriculture. The aim of this study was to investigate the impact of two slurry application methods (surface broadcast versus shallow injection) on the survival of faecal indicator organisms (FIOs) delivered via dairy slurry to replicated grassland plots across contrasting seasons. A significant increase in FIO persistence (measured by the half-life of E. coli and intestinal enterococci) was observed when slurry was applied to grassland via shallow injection, and FIO decay rates were significantly higher for FIOs applied to grassland in spring relative to summer and autumn. Significant differences in the behaviour of £ coli and intestinal enterococci over time were also observed, with E. coli half-lives influenced more strongly by season of application relative to the intestinal enterococci population. While shallow injection of slurry can reduce agricultural GHG emissions to air it can also prolong the persistence of FIOs in soil, potentially increasing the risk of their subsequent transfer to water. Awareness of (and evidence for) the potential for 'pollution-swapping' is critical in order to guard against unintended environmental impacts of agricultural management decisions.
机译：奶牛场产生大量的液体肥料（泥浆），最终将其作为一种重要的植物养分来源循环回农田。存在将泥浆施用到土地上的不同方法。一些将泥浆散布到草皮表面，而另一些将泥浆在草皮下输送到土壤中，从而有助于减少农业产生的温室气体（GHG）排放。这项研究的目的是调查两种不同的施肥方法（地面广播与浅层注水）对在不同季节通过奶牛粪便输送到复制草地的粪便指示生物（FIO）存活的影响。当通过浅层注浆将草浆施用到草地上时，观察到的FIO持久性显着增加（通过大肠杆菌和肠球菌的半衰期来衡量），春季施用到草地的FIO相对于夏天，FIO的衰减速率明显更高。和秋天。随着时间的推移，还观察到了大肠杆菌和肠道小肠球菌行为的显着差异，相对于肠道小肠球菌种群，大肠杆菌的半衰期受施用季节的影响更大。虽然浅层注入泥浆可以减少农业温室气体向空气中的排放，但它也可以延长FIO在土壤中的持久性，可能增加其随后转移到水中的风险。意识到“污染交换”潜力的证据（以及证据）对于防止农业管理决策的意外环境影响至关重要。

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