Maize/soybean intercropping with nitrogen supply levels increases maize yield and nitrogen uptake by influencing the rhizosphere bacterial diversity of soil.

With more nitrogen added, its relative abundance under MM tended to increase, being 86.91% in the N3 than N0 treatment; however, under IM showed a decreasing trend in response to fertilization, being 17.47% lower at the N3 than N0 level.

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