Effects of Different Fertilization Practice on Use Efficiency and Gaseous Losses of Labeled Fertilizer 15N

摘要：

A pot experiment was conducted with spring wheat and black soil as test materials to study the effects of different fertilization practice on the use efficiency of labeled fertilizer nitrogen, its residual rate in soil, and gaseous losses. The results showed that the application of chemical fertilizer nitrogen alone decreased the residual rate of labeled fertilizer nitrogen and increased its loss rate among the tested fertilization practices, while a combined application of chemical fertilizer and maize straw could obviously increase the fertilizer nitrogen recovery by soil and plant, and decrease the gaseous losses of fertilizer nitrogen. In this study, the reasonable fertilization practice was 200 kg·hm-2of chemical fertilizer nitrogen plus 35.7 kg·hm-2 of maize straw nitrogen, which had higher nitrogen use efficiency and lower nitrogen loss under having no effect on the yield of spring wheat conditions.

关键词： labeled fertilizer 15N fertilization practice nitrogen use efficiency nitrogen loss rate

作者: LU Caiyan MA Jian ZHANG Xudong CHEN Xin SHI Yi ZHAO Muqiu

作者单位: Key Laboratory of Terrestrial Ecological Process,Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,Liaoning,China

会议类型: 国际会议

会议名称: 2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)

会议地点: 上海

会议语种:英文

页码: 1919-1922

在线出版日期: 2009-06-02（万方平台首次上网日期，不代表论文的发表时间）