Nitrogen fixation in irrigated lucerne ( Medicago sativa) systems assessed using 15 N natural abundance

摘要：

While lucerne is grown on some 270,000 ha in the SE of South Australia its capacity to fix N2 has not been assessed, although in eastern Australia an irrigated lucerne stand was found to fix ca 85％ of its N in its fifth year,and 45％ in its sixth year (90 kg N/ha/yr) (Brockwell et al.,1995).The present study examines possible N2 ‐fixation by irrigated lucerne in farmers fields in the principal lucerne seed producing region of Australia.

关键词： nitrate reductase soil nitrate

作者: Murray Unkovich Huimin Yang Ann McNeill Xianzhi Wang

作者单位: SoiLand Land Systems Group,Earth and Environmental Sciences,The University of Adelaide,Roseworthy SA College of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730020,Gansu China

会议类型: 国际会议

会议名称: 2008世界草地与草原大会

会议地点: 呼和浩特

会议语种:英文

在线出版日期: 2008-06-29（万方平台首次上网日期，不代表论文的发表时间）