Improving triticale yield with alfalfa in saline-alkaline soil: effects on diazotrophic communities in the Yellow River Delta

文献类型： 外文期刊

第一作者： Zhang, Jinglei

作者： Zhang, Jinglei;Wu, Bo;Wang, Guoliang;Zhang, Jinglei;Liu, Mingjiang;Jia, Yuan;Kang, Lele

作者机构：

关键词： Legume; Rotation system; Crop yield; Diazotrophic community; Diversity

期刊名称：PLANT AND SOIL （ 影响因子：4.1； 五年影响因子：4.7 ）

ISSN： 0032-079X

年卷期： 2025 年

页码：

收录情况： SCI

摘要： Background and aimsIncorporating legumes into crop rotations is a well-known practice for enhancing subsequent crop yields through nitrogen (N) effects. However, limited attention has been given to the underlying microbial mechanisms. In this study, we investigated the soil diazotrophic communities and triticale yields of two rotation systems: winter triticale-summer maize (MT) and alfalfa-winter triticale (AT) in the saline-alkaline soil of the Yellow River Delta.ResultsOur results showed that AT significantly increased triticale yields by an average of 53%, along with higher diazotrophic community diversity and evenness. Non-metric multidimensional scaling (NMDS) analysis revealed a significant divergence in diazotrophic community structure between the MT and AT rotation systems. Moreover, multiple regression analysis showed that diazotrophic community diversity (alpha- and beta-diversity) as well as soil properties (e.g. soil nitrogen) explained 61.5% and 14.5% of triticale yield variation, respectively. The random forest analysis showed some bacterial genera, such as Anaeromyxobacter, Bradyrhizobium, Geoalkalibacter, Sinorhizobium, and Azoarcus were key drivers of triticale yield.ConclusionsOur research highlights the potential of legume incorporation in crop rotations to enhance subsequent crop yields by modulating diazotrophic communities.

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