Abstract: From the beginning of February 2008,the characteristics of citrus low-temperature injury in the newly-reclaimed Forest from Farmland of Three Gorges area were surveyed.The results showed that different Citrus types were injured to different extent by low-temperature stress in this region.The freeze-tolerance was ranked as Satsuma> Pon-kan citrus > Navel Orange > Pomelo.The extent of low-temperature injury deteriorated with the altitude increase,and more than 80% Navel Oranges were injured scaled to 3 and more degree of injury above 600 m.The yield in previous year affected the injury degree,namely more yield severer injury.Aspect of slope of the citrus orchard affected the injury,the orchard on the south-facing slope was injured less than that on the north slope,and the orchards at both the top and bottom of the slope were hurt more severely than that in the middle of the slope.The Waters,shelterbelt,and artificial measures of protection such as coverage all could alleviate the low-temperature injury of citrus to some extent.Based on the results,some technical measures were presented in this paper to prevent citrus being injured and promote the growth restoration.

Key words: three Gorges area, Citrus, returning farmland to forests, characteristics of freeze injury