Effect of fertilization regimes on continuous cropping growth constraints in watermelon is associated with abundance of key ecological clusters in the rhizosphere

The deterioration of the microbiome within rhizosphere is main reason behind continuous cropping obstacles and affected by fertilization regimes. However, potential associations among regimes, microbial communities, severity are poorly understood. Here, we investigated how three-year regimes (including no fertilizer, chemical organic combination bio-organic fertilizer application) affect its with growth constraints during whole growing period watermelon, using a rhizobox system under greenhouse conditions. results showed that different treatments induced drastic shifts in richness, structure, composition whereas stages few changes. Compared treatment, application inhibited watermelon. This was strongly associated reduced abundance key ecological clusters bacterial co-occurrence network, which contains beneficial taxa, such as Lysobacter sp. Haliangium In contrast, fertilizers promoted watermelon decreased fungal pathogenic Fusarium sp., Cladosporium Acremonium Overall, can induce severe inhibiting bacteria. Continuous help alleviate suppressing fungi. These findings reveal mechanisms underlying effects on