不同高接处理对'烟富10号'苹果树树体生长、果实品质和产量的影响OA

To screenan optimal top-grafting renovation scheme for'Yanfu 10'apple trees in the Long-dong region,treatments were set with different grafting heights(10 cm,40 cm,60 cm)and inclina-tion angles(0°,15°)to evaluate their effects on tree growth,fruit quality,and yield.The results showed that the A1B2(10 cm,15°)produced the largest trunk diameter,8.9％greater than the con-trol.The A3B2(60 cm,15°)resulted in the tallest tree height,significantly higher than the control.The A2B2 treatment(40 cm,15°)had the largest crown spread,with a coverage rate of 88.57％.Re-garding branch composition,the A3B1(60 cm,0°)showed the highest proportion of short branches and the highest flowering rate of short shoots,increasing by 25.7％and 27.7％over the control,re-spectively.For photosynthetic characteristics,the A1B2 had the highest net photosynthetic rate,while A3B2 had the highest water use efficiency,which increased by 42.4％compared with the con-trol.In terms of fruit quality,A2B2 performed best in single fruit mass,soluble solids content,solid-acid ratio,and vitamin C content,which were 5.51％,17.24％,and 7.47％higher than the control,respectively,fruit firmness reached 8.43 kg·cm-2,significantly higher than that of the control.For yield,A2B2 produced the highest single-plant yield and yield per hectare in the 10th year,the highest yield per 667 m2,14.13％higher than the control,with a marketable fruit rate of 89.05％.Overall,A2B2 showed the best performance in tree growth,fruit quality,and yield and can be recommended as a preferred top-grafting renovation scheme for'Yanfu 10'in the Longdong region.