Water and Nitrogen Coupling on the Regulation of Soil Nutrient-Microbial Biomass Balance and Its Effect on the Yield of Wolfberry (<i>Lycium barbarum</i> L.).

The correlation between C soil and C soil :P soil was positive and significant ( p < 0.05), the correlation between N soil and P soil , N soil :P soil and C soil :P soil was positive and highly significant ( p < 0.01), the correlation between C soil :N soil and C soil :P soil was positive and significant ( p < 0.05), and the correlation between N mic :P mic and N mic , C mic :P mic was positive and highly significant ( p < 0.01).

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Characteristics of the Contents of C soil , N soil , and P soil and the Changes in the Ecological Stoichiometry The contents of C soil , N soil , and P soil in the root zone of wolfberry in 2021 and 2022 showed an increasing trend with the increase in the application of N under the same irrigation quota ( Figure 1 a–c), while C soil :N soil , C soil :P soil , and N soil :P soil did not change significantly ( Figure 1 d–f).

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