Fate of nitrogen derived from 15N-labeled plant residues and composts in rice-planted paddy soil
作者： Hideo Ueno , Shigekazu Yamamuro
DOI: 10.1080/00380768.2001.10408439
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摘要: Abstract Pot experiments that lasted for 3 y were conducted to investigate the dynamics of nitrogen derived from plant residues (rice root, hull, straw, corn and rapeseed pod-wall), composts straw compost, cattle manure sawdust compost), which labeled with 15N. The rates uptake by rice (=N efficiency), denitrification, immobilization organic materials incorporated before first year cultivation investigated throughout cultivation. At end cultivation, relatively high N efficiency obtained pod-wall (24.6%), (19.1%), hull (18.6%), while root compost displayed a noticeably denitrification rate. Corn exhibited remarkably mineralization ranging 60 75% applied. Cumulative efficienci...
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