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. 2025 Nov 17;16:1640980. doi: 10.3389/fmicb.2025.1640980

Figure 1.

Bar graphs comparing enzyme activity in different treatments. (A) Phosphatase levels range from 3 to 10 mg/g*h, with significant differences indicated by letters. (B) Urease levels range from 0 to 4.5 mg/g*h, with significant differences. (C) Dehydrogenase levels range from 0 to 50 mg/g*h. (D) Sucrase levels range from 0 to 30 mg/g*h. Each graph shows treatments: SSa, SZa, SLa, SSAFa, SZAFa, and SLAFa indicated by different colors. Error bars represent standard deviation.

Soil aggregate size distribution under different crop rotation systems: dry sieving analysis (A, B) and wet sieving analysis (C, D). Significant differences are indicated as *p < 0.05, **p < 0.01, and ***p < 0.001 vs. the continuous monoculture control.