1, zhanhua winter jujube local winter temperature is low, zhanhua winter jujube has cold resistance. Dali winter jujube local not low Dali winter jujube no hardiness.

2, zhanhua winter jujube in low temperature environment will increase the content of anti-freezing substances in the cytosol. Dali winter jujube in the low temperature environment will not increase the content of anti-freezing substances in the cytosol. So Zhanhua winter jujube cold resistance.