What is the effect of temperature on the fruit retention of sugar orange?

Sugar orange is in the period of fruit discoloration, and its ability to resist low temperature is gradually weakening. On the one hand, low temperature weather can promote sugar orange to accelerate fruit ripening; On the other hand, low temperature and frosty weather can also cause peel softening and fruit damage.

High temperature is also not conducive to the growth and development of Shatangju. When the air temperature and soil temperature are higher than 37℃, fruits and roots stop growing. Temperature also has obvious influence on fruit quality: in a certain temperature range, with the increase of temperature, the sugar content and soluble solids increase, the acid content decreases and the quality becomes better.

Shatangju is a tree species with strong shade tolerance, but it still needs good sunshine for high quality and high yield. Generally, areas with annual sunshine hours 1200 ~ 2200 hours can grow normally. For example, South China with good sunshine and abundant calories has higher sugar content, lower acid content and higher sugar-acid ratio than Chongqing Shatangju producing area with less sunshine.

Extended data:

According to the maturity, use and market demand of citrus fruits, the harvesting time is determined. It is not suitable to pick fruits in rainy days and when the dew on the fruit surface is not dry. People who pick fruit should wear gloves, cut the fruit together with the fruit handle with a round-headed fruit scissors, then cut the fruit pedicle flat and handle it gently. The inner wall of all fruit containers should be smooth, and the harvested fruits should be transported to the packaging yard or storage warehouse in time. Avoid sun and rain.

Shatangju is a famous variety of citrus, which has high nutritional value, sweet and sour taste, and is deeply loved by people, so it also has high economic value. Especially, after Shatangju is sold, it is connected with the Internet, which also promotes the sales of Shatangju and makes the planting get better economic benefits.