美国和澳大利亚弱低温要求型甜樱桃育种进展甜樱桃已成为世界性的重要果树，而传统的甜樱桃对低温要求比较高，一般为８００～１７００小时（指低于５～７℃的小时累积数），属强低温要求型，只有满足其低温要求，才能打破休眠，开花结果；而在冬季气候比较温暖的地区，如... Sweet and Low Temperature Requirement Sweet Breeding in USA and Australia Progress in Breeding Sweet cherry has become a worldwide important fruit tree, while the traditional sweet cherry requires relatively low temperature, usually 800-1700 hours (mean hourly cumulative number less than 5-7 ℃) ), Is a strong low-temperature requirements, and only to meet the requirements of its low temperature, in order to break dormancy, flowering results; and in warmer winter climate regions, such as ...