Intercropping alleviates the inhibitory effect of N fertilization on nodulation and symbiotic N-2 fixation of faba bean

文献类型： 外文期刊

第一作者： Li, Yu-Ying

作者： Li, Yu-Ying;Yu, Chang-Bin;Cheng, Xu;Li, Chun-Jie;Zhang, Fu-Suo;Li, Long;Li, Yu-Ying;Sun, Jian-Hao;Lambers, Hans;Li, Long

作者机构：

关键词： Interspecific facilitation;N-2 fixation;N-15 natural abundance;Nodulation;Inhibitory effect of N fertilization

期刊名称：PLANT AND SOIL （ 影响因子：4.192； 五年影响因子：4.712 ）

ISSN： 0032-079X

年卷期： 2009 年 323 卷 1-2 期

页码：

收录情况： SCI

摘要： Symbiotic nitrogen fixation is commonly inhibited by N fertilization in intensive farming systems. We hypothesized that intercropping alleviates the inhibitory effect of N fertilization on nodulation and N-2 fixation of legumes. Two years of field experiments (2006-2007) with different N-fertilizer rates (0, 75, 150, 225, 300 kg N ha(-1)) were carried out to test the hypothesis in a faba bean (Vicia faba L.)/maize (Zea mays L.) intercropping system in the north-western part of China. The results show that both the nodule biomass and nitrogen derived from the atmosphere (Ndfa) in intercropped faba bean were increased by 7-58% and 8-33% at the start of flowering, 8-72% and 54-61% at peak flowering, 4-73% and 18-50% at grain filling, and 7-62% and -7-72% at maturity, respectively, compared with sole faba bean. Intercropping with maize significantly alleviated the inhibitory effect of N fertilization on nodulation and N-2 fixation, and improved the productivity of intercropping.

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