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

IF 3.9 2区农林科学 Q1 AGRONOMY

Plant and Soil Pub Date : 2025-03-04 DOI:10.1007/s11104-025-07320-x

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

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引用次数: 0

Abstract

Background and aims

Incorporating 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.

Results

Our 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 (α- and β-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.

Conclusions

Our research highlights the potential of legume incorporation in crop rotations to enhance subsequent crop yields by modulating diazotrophic communities.

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来源期刊

Plant and Soil 农林科学-农艺学

CiteScore

8.20

自引率

8.20%

发文量

543

审稿时长

2.5 months

期刊介绍： Plant and Soil publishes original papers and review articles exploring the interface of plant biology and soil sciences, and that enhance our mechanistic understanding of plant-soil interactions. We focus on the interface of plant biology and soil sciences, and seek those manuscripts with a strong mechanistic component which develop and test hypotheses aimed at understanding underlying mechanisms of plant-soil interactions. Manuscripts can include both fundamental and applied aspects of mineral nutrition, plant water relations, symbiotic and pathogenic plant-microbe interactions, root anatomy and morphology, soil biology, ecology, agrochemistry and agrophysics, as long as they are hypothesis-driven and enhance our mechanistic understanding. Articles including a major molecular or modelling component also fall within the scope of the journal. All contributions appear in the English language, with consistent spelling, using either American or British English.