Effects of ginger in situ ridge replacement cultivation on yield， quality，and rhizosphere microbiome

A systematic study was conducted to evaluate effects of traditional continuous cropping（CK treatment）, cross-row ridge replacement（T₁ treatment）, and diagonal ridge replacement（T₂ treatment）on ginger yield, quality, and rhizosphere microbiome．Results showed that T₂ treatment performed the best, with a yield of 84924.30 kg/hm², an increase of 14.52% compared to CK treatment（P<0.05）．Branch number and stem diameter increased by 17.36% and 9.88%, respectively, compared to CK treatment．For quality, volatile oil content（2.17%）, soluble sugar content（4.02%）, 6-gingerol content（2.71 mg/g）, and 8-gingerol content（1.88 mg/g）in T₂ treatment were significantly higher than CK treatment．Soil analysis showed that T₂ treatment significantly increased bacterial diversity（Shannon index of 6.14）and Pseudomonas abundance（15.83%）, with a decrease in Fusarium abundance of 8.38 percentage points and an increase in urease activity of 67.44%．Research has shown that diagonal ridge replacement mode could better optimize soil microenvironment, synergistically improve ginger yield, quality, and soil health．An innovative cultivation solutions and technical support for overcoming ginger continuous cropping barriers and achieving sustainable ginger cultivation have been provided．