Effect of Chilling Period on Dormancy Release of Oak Tree
With Quercus mongolica Fisch.,Quercus mongolica dentata and Quercus acutissima Carruth as materials,the chilling period needed for breaking dormancy of oak trees was discussed in this paper.The result of experiment showed that dormancy release of oak trees is connected with chilling requirement;and the effect of chilling period varies among different oak varieties.The more chilling period the oak trees accept,the longer time needed for their budding and leaves blossom.If the dormant oak trees were given 4℃ to 5℃ temperature up to 360h,the dormancy of Quercus mongolica Fisch.,Quercus acutissima Carruth and Quercus mongolica dentata would be broken in advance.