Overall, the phenolic acid level under S1 was significantly higher in the 5-y-old soil than in the 1-y-old soil, indicating an increasing trend over time.
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Phenolic acid reduction in <i>Fritillaria taipaiensis</i> rhizosphere via organic fertilization.
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The sentences
The result showed that the levels of available nitrogen, Olsen-phosphorus, and available potassium in chemical fertilizer and chemical fertilizer + organic fertilizer, along with the organic matter content in all three soil samples, showed a decreasing trend over time, while organic fertilizer exhibited significant fluctuations without a clear pattern.