氮磷钾配比施肥对'早酥红'梨果实品质的影响OA

'Zaosuhong'pear was used as the material,and 8 treatments were set up(including blank control)with different ratios of nitrogen(N),phosphorus(P2O5),and potassium(K2O)fertilization.Among them,N was set at 2 levels of 400 and 800 g/plant,P2O5 was set at 3 levels of 300,600,and 900 g/plant,and K2O was set at 2 levels of 100 and 200 g/plant.Fruit yield and quality indicators,such as single fruit weight,fruit diameter,soluble solids,and soluble sugar content,were measured for each treatment,and Pearson correlation analysis was conducted on these indicators.The results showed that all fertilization treatments had higher single fruit weight(210.84-292.87 g)and fruit diameter(7.34-7.90 cm)compared to the non-fertilization treatment(194.02 g,7.18 cm).Among the treatments,T7(N 800 g/plant,P2O5 300 g/plant,K2O 100 g/plant)demonstrated the best promotion effect on fruit yield.In terms of internal quality,T7 had the highest soluble solids content(13.65%),while T3(N 800 g/plant,P2O5 900 g/plant,K2O 200 g/plant)had the highest soluble sugar content(8.03 mg/g),the lowest titratable acid content(0.25%),and the smallest flesh firmness(7.12 N/S),indicating that T3 yielded the best internal fruit quality.Correlation analysis revealed that fruit water content was positively correlated with soluble sugar content(P<0.05)and negatively correlated with flesh firmness(P<0.05).In conclusion,T3 showed the best comprehensive fruit quality and can be further validated in demonstration trials for its yield-increasing and quality-enhancing effects.