The main cause of chilling injury in the annual branches was the losing of water at critical period; the reasons of anatomical structure was the thick epidermis, the loose arranging of parenchyma in cortex, and the undeveloped parenchyma in best.

造成1年生枝條凍害的主要原因是生長(zhǎng)與休眠臨界期枝條的大量失水熟女性生活视频；其形態(tài)解剖學(xué)原因是表皮菊，皮層薄壁細(xì)胞排列疏松和韌皮薄壁細(xì)胞不發(fā)達(dá)久久黄色一级视频丶一。