About BERGSTROEM L
About Swedish Univ. Agricultural Sci., Uppsala, SWE
About KIRCHMANN H
About Swedish Univ. Agricultural Sci., Uppsala, SWE
About Journal of Environmental Quality
About nitrogen 15
About Fertilizer application and efficiency
About Wheats and barleys
About 窒素15
About 標識
About 緑肥
About 硝酸アンモニウム
About 窒素
About 浸出
About 穀物
About 取込