作者: Mizuhiko Nishida , Hirokazu Sumida , Naoto Kato
DOI: 10.1111/J.1747-0765.2008.00255.X
关键词: Field experiment 、 Animal science 、 Agronomy 、 Crop 、 Mathematics 、 Panicle 、 Compost 、 Manure 、 Sawdust 、 Nitrogen 、 Paddy field
摘要: Abstract To estimate the fate of nitrogen (N) derived from cattle manure compost with sawdust (CMC) in a paddy field cool climate region Japan, well-composted 15N-labeled CMC was applied to microplot experiment. Throughout experimental period three crop seasons, N taken up by rice plants without marked decline. The percentages as (%CNRp) were 2–3% for each year. over entire growth 1–2, 2 and %CNRp at panicle initiation, heading maturity stages, respectively. A significant positive linear correlation found between cumulative uptake number days transformed standard temperature (25°C) period, including fallow season. identical application rates ranging 1 4 kg m−2. Using CMC, results showed that stable source ric...