一、发生的主要原因1.与品种特性有关　一般花芽分化容易、休眠较浅的品种,如丽红、秋香等休眠时间仅需50小时左右,休眠期所需低温量较少,这样的品种就容易出现“不适时出蕾”现象。而全明星、哈尼、欧洲1号等品种,休眠时间长达500～600小时,休眠要求低温量相对多一些,这种现象 First, the occurrence of the main reasons for the occurrence of a variety of characteristics and the general flower bud differentiation easy, shallow dormancy varieties, such as red, autumn incense and other dormancy time only about 50 hours, low temperature required for dormancy, such species Prone to “discomfort in the bud” phenomenon. The All-Star, Hani, the European No. 1 and other varieties, sleeping time up to 500 ~ 600 hours, sleeping requires a relatively more low-temperature, this phenomenon