Soil pH, SOM, N, and TP had significant effects on both bacterial and fungal communities, and TK and C/N had highly significant effects on fungal communities.
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Soybean continuous cropping affects yield by changing soil chemical properties and microbial community richness.
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The sentences
The SOM content showed an increasing trend with increasing years of continuous cropping and was significantly lower in R.
The TP and TK contents showed a decreasing trend with increasing years of continuous cropping and were significantly lower in the former treatments than in R.