蓖麻饼粕肥对葡萄品质及土壤肥力的影响OA

To screen the optimal organic fertilizer for grape cultivation,this study set castor bean cake meal fertilizer(CBMF),Yufeng organic fertilizer(YOF),and composed sheep manure fertilizer(CSM)as treatment groups,with no fertilizer application as the control(CK).A total of 18 indicators,including grape yield,berry morphology,fruit quality,and rhizosphere soil physicochemical properties,were measured,and the fertilization effects were comprehensively evaluated using correlation analysis and principal component analysis(PCA).The results showed that all three organic fertilizers improved grape yield,optimized fruit quality,and enhanced soil fertility,with the CBMF treatment exhibiting the best performance.Compared with the control,CBMF increased the single berry weight and yield per hectare by 29.95%and 67.05%,respectively,and significantly increased the longitudinal and transverse diameters of berries.It also raised the contents of soluble solids and soluble sugars by 19.8%and 14.2%,reduced titratable acid content by 9.7%,significantly increased soil organic matter and the total and available concentrations of N,P and K,and slightly decreased soil pH.The comprehensive score from PCA ranked the treatments as CBMF＞YOF＞CSM＞CK.In conclusion,castor bean cake meal fertilizer can synergistically improve grape yield,fruit quality,and soil fertility,providing theoretical support and practical guidance for fertilization in the green cultivation of grapes.