...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>South African Journal of Plant and Soil >Effect of added organic substrates on reduction in a soil from the Maputaland Coastal Plain
【24h】

Effect of added organic substrates on reduction in a soil from the Maputaland Coastal Plain

机译：添加有机底物对马普拉德沿海平原土壤还原的影响

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

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

摘要

Wetland soils of the Maputaland Coastal Plain do not exhibit the redox morphology typically associated with extended periods of water saturation. The aim of this paper was to determine if the addition of various organic substrates (buffalo grass, peat, sucrose) would stimulate reduction of a selected soil from the Maputaland Coastal Plain. Results showed that the added buffalo grass and peat did not impact on reduction, irrespective of the amount added and were probably not readily oxidisable. Addedsucrose was readily oxidisable and the amount applied significantly promoted reduction. Increased levels of the added organic substrates had a smaller effect on reduction. Higher total carbon levels (1.0% and 1.5%) typically resulted in lower pH and Eh,and higher Fe2* concentrations. Generally, pH and Eh both declined during the first 14 days of water saturation, with a concomitant increase in Fe24, followed by an increase in pH and Eh and concomitant decrease in Fe2* over the next 28 days. It was concluded that the soils of the Maputaland Coastal Plain do not have enough residual organic carbon to support reduction and that a deficiency in readily oxidisable organic matter substrate should be further explored as cause for the absence of redoximorphicfeatures in these soils.
机译：Maputaland沿海平原的湿地土壤不表现出通常与延长的水饱和时期相关的氧化还原形态。本文的目的是确定添加各种有机基材（水牛草，泥炭，蔗糖）是否会刺激马赛克和沿海平原的选定土壤的减少。结果表明，添加的水牛草和泥炭不影响减少，而不管添加的量，也可能不易氧化。加入蔗糖易氧化，施加的量显着促进了减少。增加的有机基材的水平较小对还原效果较小。含量越高，总碳水平（1.0％和1.5％）通常导致pH和eH较低，FE2 *浓度更高。通常，pH和EH均在水饱和度的前14天内下降，伴随于FE24的伴随增加，然后在未来28天内增加pH和eh，伴随的Fe2 *伴随。得出结论是，马普拉德兰沿海平原的土壤没有足够的残余有机碳来降低，并且易于氧化有机物质基质的缺乏应进一步探索，因为这些土壤中没有雷诺昔单抗的原因。

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