１成熟标准 （１）果形变化：两颊丰满。 （２）果表颜色变化：由深绿变为淡绿，有些品种变为黄色。注意一些品种果表呈红色并不标志成熟。 （３）果肉颜色变化：由黄绿变为黄色或橙色。２．质量标准 （１）果形及大小要均匀，果表颜色正常，果肉硬度适宜。 （２）无腐烂、无晒 1 mature standard (1) fruit shape changes: plump cheeks. (2) fruit table color change: from dark green to light green, some varieties into yellow. Note that some varieties of red fruits do not mark the maturity. (3) color changes in the flesh: from yellow to yellow or orange. 2. Quality standards (1) fruit shape and size should be uniform, fruit color is normal, appropriate hardness of the pulp. (2) No decay, no sun