Intercropping grain legumes with non-legumes has a vital importance on the improvement of biodiversity and crop production. However, the variations of rhizosphere soil arbuscular mycorrhizal fungi (AMF) and their impact mechanism are still unclear under different intercropping systems in the Yellow River Irrigation District of Ningxia, China. We conducted a field experiment to study variations in rhizosphere soil AMF diversity and its effects under different planting systems in this area in 2019. Three intercropping systems consisting of six rows of spring wheat intercropped with two rows of soybean (RSW), wheat monoculture (RW), and soybean monoculture (RS) were applied to investigate the dynamics of soil AMF diversity, soil properties, and crop yields. The results showed that the RSW treatment had a 5.6 and 10.0% higher soil organic carbon (SOC) content than the RW and RS plots, respectively. The dominant genera in this study were Glomus and Paraglomus with mean relative abundances of 45.8 and 22.1%, respectively. The Shannon index, Simpson index, Chao1 value, and abundance-based coverage estimator (ACE) in the RSW treatment were higher than in the RS plots. Additionally, the multiple linear regression equation suggested that invertase activity was the main impact factor for the Shannon index of AMF in this region. Moreover, the wheat yield in the RSW plot was 11.4% higher than the RW plot. The results suggest that the RSW treatment has great potential for improving soil nutrients, AMF diversity, and wheat yield to sustain soil health and crop production.

中文翻译：

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大豆间作对麦田根际土壤丛枝菌根真菌群落多样性的影响

豆类与非豆类间作对提高生物多样性和作物生产具有至关重要的意义。然而，宁夏黄河灌区不同间作制度下根际土壤丛枝菌根真菌（AMF）的变化及其影响机制尚不清楚。2019年，我们开展了田间试验，研究了该地区不同种植制度下根际土壤AMF多样性的变化及其影响。六行春小麦与两行大豆（RSW）、小麦单作（RW）组成的三种间作系统。 )，并应用大豆单一栽培 (RS) 研究土壤 AMF 多样性、土壤性质和作物产量的动态。结果表明，RSW 处理有 5.6 和 10。土壤有机碳 (SOC) 含量分别比 RW 和 RS 地块高 0%。本研究中的优势属是Glomus和Paraglomus的平均相对丰度分别为 45.8% 和 22.1%。RSW 处理中的香农指数、辛普森指数、Chao1 值和基于丰度的覆盖率估计 (ACE) 高于 RS 图。此外，多元线性回归方程表明，蔗糖酶活性是该地区AMF香农指数的主要影响因素。此外，RSW 小区的小麦产量比 RW 小区高 11.4%。结果表明，RSW 处理在改善土壤养分、AMF 多样性和小麦产量以维持土壤健康和作物生产方面具有巨大潜力。