Abstract:

To screen out good hazelnut varieties suitable for cultivation in Mu Us sandy land, five major hazelnut varieties ‘Dawei’, ‘Liaozhen 3’, ‘Liaozhen 7’, ‘Liaozhen 8’ and ‘Pingou 15’ were introduced from Zhanggutai, Liaoning Province. Two experiments were conducted in Hongshixia Botanical Garden of Shaanxi Sand Control Research Institute and Niuyuqin National Sand Control Base of Jingbian County. Experiments on introduction and cultivation were carried out, and the phenological period, growth and fruiting conditions were observed and analyzed. The results showed that the five hazelnut varieties could grow normally and complete vegetative and reproductive growth in the two experimental sites. But in terms of tree height and crown diameter, ‘Dawei’ and ‘Liaozhen 3’ were significantly better than ‘Liaozhen 7’ and ‘Liaozhen 8’ (P＜0.05). In terms of shoot length, shoot diameter and shoot number, ‘Dawei’ was significantly better than the other three varieties (P＜0.05), followed by ‘Liaozhen 3’. From the perspective of seed setting index, there was no significant difference (P＞0.05) among the four varieties except ‘Pingou 15’, which was worse than other varieties. From the perspective of seed setting date, ‘Dawei’ and ‘Liaozhen 3’ were earlier than ‘Liaozhen 7’ and ‘Liaozhen 8’, which were significantly better than ‘Pingou 15’. According to the comprehensive growth index and fruiting index, the five varieties can be introduced and planted in Yulin, but ‘Dawei’ and ‘Liaozhen 3’ are more suitable to be popularized and planted in Mu Us sandy land, ‘Pingou 15’ has the worst growth performance and is not suitable to be popularized and cultivated in Mu Us sandy land.

Key words: Corylus heterophylla× Corylus avellana, Mu Us Sandy Land, Introduction Experiment, Adaptive Research, Growth Law