Abstract: Research and production results indicate that the suitable maturity indices for picking Fukien mandarin orange are as follows: For medium period storage, the colour and lustre of fruit peel reaches grade 3 and the ratio of soluble solids to organics acids is 8. 5: 1, It is applicable in the area where the average temperature in a year is above 20℃, Forg period storage, the colour and fustre of fruit peel reaches grade 2 and the ratio of soluble solids to organic acids is 8. 0: 1 , This is applicable in the area where the orange can be cultivated.

Key words: Orange Mediuro/Long Period Storage Index of Picking