期刊
SOIL RESEARCH
卷 55, 期 5-6, 页码 500-505出版社
CSIRO PUBLISHING
DOI: 10.1071/SR17018
关键词
cattle slurry; immobilisation; modelling; organic N; pig slurry
类别
资金
- Gylle-IT project under Danish research and development program GrOnt Udviklings- og Demonstrationsprogram (GUDP)
A simple empirical model was developed for estimation of net mineralisation of pig and cattle slurry nitrogen (N) in arable soils under cool and moist climate conditions during the initial 5 years after spring application. The model is based on a Danish 3-year field experiment with measurements of N uptake in spring barley and ryegrass catch crops, supplemented with data from the literature on the temporal release of organic residues in soil. The model estimates a faster mineralisation rate for organic N in pig slurry compared with cattle slurry, and the description includes an initial N immobilisation phase for both manure types. The model estimates a cumulated net mineralisation of 71% and 51% of organic N in pig and cattle slurry respectively after 5 years. These estimates are in accordance with some other mineralisation studies and studies of the effects of manure residual N in other North European countries.
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