大果榛子冻害调查研究

Investigation on Freezing Injury of Hybrid Hazelnuts

通过大果榛子冻害调查并计算冻害指数,发现其冻害发生受品种、地势及树龄影响较大。同一园内不同品种抗寒性由强到弱依次为‘达维’‘平欧15’‘辽榛3号’‘平欧110’;大果榛子冻害与所处地势的关系,受害由轻到重依次为山下盆地、山下平地、山上背风阳坡、山上背风阴坡、山上迎风坡;榛子冻害与树龄的关系为树龄越大抗寒性越强,抗寒性由强到弱依次为10年生、7年生、4年生。

Based on the investigation and calculation of freezing injury index of hybrid hazelnuts,it was found that the occurrence of freezing injury was greatly affected by species,terrain and tree age. The cold resistance of different varieties in the same garden from strong to weak was ’Dawei’’Pingou 15’’Liaozhen 3’’Pingou 110’. The relationship between the freezing damage and the terrain of hybrid hazelnuts,the victims from strong to weak in descending basin,descending flat,mountain lee sunny slope,mountain lee shade slope,mountain wind slope;the relationship between hybrid hazelnuts freezing injury and tree age was that the older the tree was,the stronger the cold resistance was,and the cold resistance was 10 years old,7 years old and 4 years old.