文献类型： 外文期刊

作者： Cui, Nan ¹ ; Qi, Tianxiang ¹ ; Chen, Zhen ¹ ; Wang, Jiayi ¹ ; Ma, Jing ¹ ; Liu, Enke ⁴ ; Meruyert, Medelbek ¹ ; Jia, Zhikuan ¹ ; Siddique, Kadambot H. M. ⁶ ; Zhang, Peng ¹ ;

作者机构： 1.Northwest A&F Univ, Coll Agron, Yangling 712100, Shaanxi, Peoples R China

2.Northwest A&F Univ, State Key Lab Crop Stress Resistance & High Effici, Yangling 712100, Shaanxi, Peoples R China

3.Minist Agr & Rural Affairs, Key Lab Crop Physiol Ecol & Tillage Sci Northweste, Yangling 712100, Shaanxi, Peoples R China

4.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China

5.Akhmet Baitursynuly Kostanay Reg Univ, Kostanay 110000, Kazakhstan

6.Univ Western Australia, UWA Inst Agr, Perth, WA 6001, Australia

关键词： Legume stubble; Optimal nitrogen; Root system; Nitrogen uptake and utilization; Ecosystem multifunctionality

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 aimsLegume rotation and optimized nitrogen application are established strategies for sustainable crop production and soil quality improvement. This study aims to clarify the effects of soybean stubble combined with nitrogen reduction on winter wheat growth, nitrogen uptake, soil ecosystem multifunctionality (EMF), and soil-crop interactions.MethodsIn three different preceding crop systems (Fallow-F, Soybean-B, and Maize-M), three nitrogen levels (N0: 0, N1: 125, N2:225 kg N/ha) were applied during the wheat season to investigate the effects on wheat root growth, aboveground biomass accumulation, nitrogen absorption, yield, and soil EMF.ResultsCompared with F and M stubbles, B significantly promoted the growth of wheat, increasing nitrogen uptake by 27.48% and 33.35%, and yield by 19.10% and 20.03%, respectively. Across different stubble treatments, the root index, aboveground biomass, and nitrogen accumulation of wheat increased with nitrogen application. B stubble also significantly improved annual economic benefits and EMF, particularly at the N1 level (BN1), showing average increases of 70.87% and 4.17 times over other treatments. Additionally, a positive correlation was observed between root and aboveground wheat growth, with soil parameters positively correlating with both belowground and aboveground growth, as well as nitrogen accumulation and yield. Notably, soil enzyme activity and total nitrogen content were more strongly related to variations in wheat growth indicators.ConclusionThe best combined performance of the BN1 treatment in terms of crop growth, economic efficiency and ecosystem provides theoretical support for the incorporation of legumes into cropping systems to reduce chemical nitrogen fertilizer application and improve soil ecosystem multifunctionality.Graphical AbstractNote: Schematic figure of experimental design and summary of research results. The data in the blue box represent the results of the comparison between the fallow stubble and the maize stubble, and the data in the green box represent the results of the comparison between the soybean stubble and the maize stubble.