2001年杏花期晚霜冻害调查研究

Investigation on late frost injury at blooming stage of apricot in 2001

查明了 2 0 0 1年泰安杏霜冻的基本情况。华北生态群的特早熟试管杏品种群最抗霜冻 ,欧洲生态群不抗 ,华北生态群老品种介于以上二类之间。讨论了抗霜冻与避霜冻以及霜冻与产量的关系。提出预防霜冻的措施 ,主要包括 :选择有利地形、选择抗霜冻品种、采取熏烟和夏季修剪等措施。

Circumstances of forst injury to apricot in Taian in 2001 were investigated. Cultivars of earliest tube-apricot of North China ecological group are highly resistant to frost,but cultivars of Europe ecological group fail to tolerate frost. Frost resistance of old cultivars of North China ecological group is ranged between the above two ecological groups. Relationship between frost resistance and avoiding frost as well as relationship between frost and yield are discussed. Measures for protection to frost are proposed,including selecting favorable topography and frost-resistant cultivars,smoking and summer pruning. It was realized that various methods to delay apricot blooming phase were not really effective in protection against frost.