搜索结果: 1-3 共查到“农业基础学科其他学科 nitrogen”相关记录3条 . 查询时间(0.125 秒)
Effect of Composting with Bark Amendment on Nitrogen and Manganese Content in Water Clarifier Sludge
Nitrogen Manganese Water Clarifier Sludge
2009/7/13
Effect of pre-mixing bark amendment into water purification sludge before auto-composting on nitrogen and manganese content of the sludge and quality as material for potting media was investigated. Ea...
The effect of decreasing fertilization on agricultural nitrogen leaching: a model study
agriculture nitrogen fertilizer model leaching climate
2010/8/9
In Finland, the use of agricultural nitrogen (N) fertilizers has decreased since the beginning of the 1990抯 but there is not yet any clear response in observed water quality in the monitored agricultu...
National and regional net nitrogen balances in Finland in 1990 2005
nitrogen balance agricultural regions animal manures fertiliser yield
2010/8/9
Nitrogen (N) balance has been identified as a principal agri-environmental indicator. In addition to national N balances, calculation of N balances for different agricultural regions is also recommend...