Effect of Petroleum Products on Soil Catalase and Dehydrogenase Activities

来源 :土壤科学期刊(英文) | 被引量 : 0次 | 上传用户:gg236624
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The effect of refined petroleum products on the activities of selected enzymes (catalase and dehydrogenase) was studied. There was a significant decrease (p kerosene > diesel > engine oil. However, a significant increase (p diesel > petrol > e
其他文献
The localised irrigation or drop by drop system is a technique which makes it possible to save water, because it ensures a balanced and efficient distribution o
作为宏观调控的重要工具,财政政策对人力资本形成具有重要影响。本文分别从增加人力资本财政投入、调整教育性财政投入结构和完善人力资本的税收制度角度论述了促进人力资本增
[摘要] 随着的市场经济加速发展,我国传统的成本管理模式难以适应竞争日趋激烈的市场环境。本文揭示了我国成本管理中存在的若干问题并针对这些问题提出了强化成本管理、降低成本应采取的一些措施。  [关键词] 现代企业制度 成本管理 资源组合 效益 途径 对策    在市场经济条件下,随着全球经济一体化的发展,市场竞争日趋激烈,企业的利润空间逐渐缩小。在这种情况下,企业成本水平的高低直接决定着一个企业盈利
It is already known that repeating cycles of drying and rewetting decrease the metabolic activity of the soil. The aim of this paper is to explain on the basis
Gangetic alluvial plain in north India constitutes significant proportions of barren sodic lands. A representative site, where afforestation was carried out dur