不同颜色防鸟网对苹果叶片净光合速率和果实品质的影响OA

To elucidate how bird-proof nets of different colors influence leaf photosynthetic characteristics and fruit quality in apple,nine-year-old Yanfu 3/M9 trees were covered with polyethylene nets in three colors(red,blue,and white).We systematically measured leaf net photosynthetic rate,light intensity,and both external and internal fruit-quality attributes.Results showed that leaves under blue nets exhibited the highest net photosynthetic rate[19.53µmol/(m2·s)],significantly higher than red nets[17.37 µmol/(m2·s)],with white nets intermediate[18.96µmol/(m2·s)].Blue nets significantly increased single-fruit weight(229.33 g),surface gloss index(81.25%),and soluble solids content(16.83%).Red nets produced the greatest fruit firmness(8.81 kg/cm2),whereas white nets significantly improved the fruit coloration index(78.75%).In conclusion,the blue bird-proof net demonstrated the most prominent advantages in enhancing leaf photosynthetic efficiency and improving overall fruit quality,indicating high potential for practical application and promotion.