• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Soil & Tillage Research >Management of weed emergence and weed seed bank in response to different tillage, cropping systems and selected soil properties
【24h】

Management of weed emergence and weed seed bank in response to different tillage, cropping systems and selected soil properties

机译：应对不同耕作，耕作制度和特定土壤特性的杂草出苗和杂草种子库管理

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

The agronomic practices used to manage the soil play an important role in the maintenance of biological diversity within crop fields. Conservation agriculture technology has been extensively adopted in dry land conditions. In these systems, the relationship between soil properties and weed density and soil weed seed bank has not been explored deeply. We conducted this study in order to: (1) examine the cumulative impact of tillage systems (CT, MT and NT) on weed emergence on the field; (2) test the effects of different tillage and crop systems on weed species density and diversity (Shannon's index, Pielou index and species richness) within the transient and persistent seed bank of the soil; and (3) analyse the impact of two soil parameters on weeds: water stable aggregates (WSA) and particulate organic matter content (C-POM). The highest weed density was recorded in conservation tillage systems (MT and/or NT) several years after the implementation of these systems. Additionally, the cumulative effects of conservation tillage techniques were found to have increased the seed density and species diversity in soil seed bank, which was probably due to particular conditions created in the soil; a low or negligible level of soil disturbance (as is expected with MT and NT) possibly allowed seeds to keep in the soil seed bank and remain dormant, due to, among other reasons, improved water stable aggregates and organic matter content. Results from the study confirm the complexity of the matrix formed by weed-seed bank-soil. (C) 2016 Elsevier B.V. All rights reserved.
机译：用于管理土壤的农艺方法在维持农田内生物多样性方面起着重要作用。保护性农业技术已在干旱土地条件下得到广泛采用。在这些系统中，尚未深入探讨土壤特性与杂草密度和土壤杂草种子库之间的关系。我们进行这项研究的目的是：（1）研究耕作系统（CT，MT和NT）对田间杂草萌发的累积影响; （2）测试不同耕作和作物系统对土壤瞬时种子库和持久种子库中杂草物种密度和多样性（香农指数，皮娄指数和物种丰富度）的影响; （3）分析两种土壤参数对杂草的影响：水稳性团聚体（WSA）和颗粒有机质含量（C-POM）。实施这些系统几年后，在保护性耕作系统（MT和/或NT）中记录了最高的杂草密度。另外，发现保护性耕作技术的累积效应增加了土壤种子库中的种子密度和物种多样性，这可能是由于土壤中产生的特殊条件所致。较低或可忽略的土壤扰动水平（如MT和NT所预期的那样）可能会导致种子保留在土壤种子库中并保持休眠，这是由于（除其他原因外）改善了水稳性团聚体和有机质含量。研究结果证实了杂草种子库土壤形成的基质的复杂性。 （C）2016 Elsevier B.V.保留所有权利。

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