Among all indicators, soil available nitrogen has the strongest correlation with the incidence rate of bacterial wilt, with the correlation coefficients of 0.918 * * and 0.838 * * respectively with the incidence rate of bacterial wilt cluster and the incidence rate of plant, followed by the soil Olsen-P content, with the correlation coefficients of 0.882 * * and 0.752 * * respectively with the incidence rate of bacterial wilt cluster and the incidence rate of plant, followed by the amount of chemical fertilizer application and the content of soil organic matter, and the soil available potassium content has the weakest correlation with the incidence rate of bacterial wilt.
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