几个楸树无性系引种造林试验

Study on the introduction of Catalpa bungei clones in Shangdong Province

利用引进的10个楸树无性系,在山东省诸城市进行造林对比试验,观察分析了各参试无性系的造林成活率、物候期、生长特性、分枝特性和适应性,结果表明:10个楸树无性系在试验地点的造林成活率高,生长速度快,抗病虫、抗逆性(干旱、寒冷和风折)强,具有较好的生态适应性,其中豫楸1号表现较突出,6年生平均胸径达13.04 cm,平均树高达7.31 m,分别超出林分平均胸径和平均树高7.52%,1.5%。

The survival rate, phonological phases, growth and branch characteristics of ten Catalpa bungei clones that were introduced from home and controlled afforestation trials were held at zhucheng city were studied, the results showed that： The tested clones all showed good ecological adaptability with high survival rate ,big growth and high resistance to disease infection, pest attack, drought, cold and wind broken. And among the tested clones, Catalpa bungei ＇yuqiul ＇clones was the best one, whose six--year--old breast diameter and height was 13.04 cm and 7.31m respectively, exceeding average breast diameter and height 7.52% and 1.5%.