N<sub><nobr>2</nobr></sub> fixation of nodules and N absorption by soybean roots associated with ridge tillage on poorly drained upland fields converted from rice paddy fields期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

N₂ fixation of nodules and N absorption by soybean roots associated with ridge tillage on poorly drained upland fields converted from rice paddy fields

Authors:	Tomoki TAKAHASHI Hisashi HOSOKAWA Morio MATSUZAKI

Affiliation:	Hokuriku Research Center, National Agriculture Research Center, Niigata, 943-0193 Japan

Abstract:

Keywords:	soybean tillage wet injury nitrogen uptake upland field converted from rice paddy field