Nitrogen Losses from Flooded rice Field
作 者：
Gao Xiaojiang;Hu Xuefeng;Wang shaoping
单 位：
bh.med.kyoto-u.ac.jp
关键词：
flooded rice fields;fertilizer-n;n losses;runoff
摘 要：
A field microplot experiment was conducted during the tilleringstage of paddy rice to investigate nitrogen (N) loses from floodedrice fields following fertilizer application. After application ofammonium bicarbonate, most of nitrogen in the floodwater was presentas NH_4-N and its concentration varied widely with time.Concentrations of both NO_3-N and NO_2-N in the floodwater were lowdue to the weakened nitrification. Under flooded anaerobic reducingconditions, soil solution concentrations of NO_3-N and NH_4-N werenot High, ranging form 0.6 mg L~-1 to 4.8 mg L~-1, and decreased withsoil depth.
导出引用
计量
文章访问数: 9
HTML全文浏览量: 0
PDF下载量: 0
所属期刊
