...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>農業気象 >Effect of rice straw application on CH4 emission in continuous and recently converted paddy fields
【24h】

Effect of rice straw application on CH4 emission in continuous and recently converted paddy fields

机译：稻草还田对连续稻田和新近转化稻田CH4排放的影响

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

Management of rice straw is of environmental concern because it significantly affects methane (CH4) emissions from rice paddies. To evaluate straw-application effects on paddies those have different cultivation histories, we measured CH4 emissions in continuously cultivated rice paddy (CP) and recently converted paddy (RP) (from soybean cultivation) with rice straw treatments (+S). Further, we hypothesized that changes in i) soil Fe (III) reduction and ii) population dynamics of methanogens were responsible for the different responses of CH4 emissions due to straw application between CP and RP. Methane (CH4) emission from CP+S was 2-fold larger than that from RP+S, although relative enhancement was higher in later (492%) than the former (289%) compared with no straw application. Stoichiometric evaluation revealed that applied rice straw acted as an exogenous source of electron donor for CH4 production, especially in CP. Our results showed that the increase in CH4 emissions by straw application was much greater in continuous than short term paddy.
机译：稻草的管理是环境问题，因为它会严重影响稻田中的甲烷（CH4）排放。为了评估秸秆施用对不同种植历史的稻田的影响，我们测量了稻草处理（+ S）连续种植的稻田（CP）和最近转化的稻田（RP）（来自大豆栽培）的CH4排放。此外，我们假设i）土壤铁（III）的减少和ii）产甲烷菌的种群动态的变化是由于CP和RP之间使用秸秆导致CH4排放不同的原因。 CP + S的甲烷（CH4）排放量比RP + S的甲烷（CH4）排放量大2倍，尽管与不使用秸秆的情况相比，后期（492％）的甲烷排放量要比前者（289％）高。化学计量的评估显示，施用的稻草可作为CH4生产中电子供体的外源，特别是在CP中。我们的研究结果表明，秸秆还田带来的CH4排放量的增加比连续稻田的增加更大。

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