A Simple Model for Estimation of Atmospherically-Derived Nitrogen in Grass-Clover Systems
作者:
ErikSteen Kristensen,
Henning Høgh-Jensen,
IbSillebak Kristensen,
期刊:
Biological Agriculture & Horticulture
(Taylor Available online 1995)
卷期:
Volume 12,
issue 3
页码: 263-276
ISSN:0144-8765
年代: 1995
DOI:10.1080/01448765.1995.9754746
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Atmospherically-derived nitrogen can be a major source of nitrogen in organic or other low-input farming systems. It is, however, in practice difficult to quantify the contribution of nitrogen from the atmosphere especially when dealing with grass-clover leys in the crop rotation. In this study a simple model based on knowledge about the content of clover in herbage and the time after establishment is presented and calibrated to a range of production conditions in Denmark.
点击下载:
PDF (645KB)
返 回