1, Gannan navel orange ripens from 1 1 to 65438+February every year. Gannan is the largest navel orange producing area in China, with an area of102,000 hm2 and a total output of100,000 t.

2. The navel orange with red meat is suitable to be planted in areas where the annual average temperature is above 17.5℃ and the annual average extreme minimum temperature is above -3℃. The best planting area of red meat navel orange is: the annual accumulated temperature is 5500 ~ 6500℃, navel orange is suitable for planting in the area with large temperature difference between day and night before fruit ripening 10 to10, and winter frost or frost appears at the end of 12 or in a short time, and it is suitable for planting in the middle and upper reaches of the Yangtze River and can develop moderately. However, when planted in areas with less heat conditions, the fruits are small and irregular in size.

3. It turns out that Gannan navel orange ripens every autumn and winter. Although we sometimes buy some so-called Gannan navel oranges in advance, many of them are not genuine.