不同繁苗时间对沙地平欧杂种榛压条苗生根的影响

Effects of Different Propagation Time on Rooting of Corylus heterophylla × Corylus avellan in Sandy Land

以科尔沁沙地栽培的辽榛3号(84-226)、辽榛7号(82-11)和达维(84-254)3个品种平欧杂种榛(Corylus heterophylla Fish.×Corylus avellana L.)为研究对象,分析不同繁苗时间对沙地平欧杂种榛压条苗生根情况的影响。结果表明:3种平欧杂种榛的生根率、生根数量、生根基径和生根长度均随压条时间推移呈下降趋势,且从6月30日起,各指标下降幅度明显。综合比较,在章古台地区对平欧杂种榛进行繁育苗木的最佳时间段是6月25日—6月30日。

In 2015,Corylus heterophylla Fish. ×Corylus avellana ‘Liaozhen No. 3’（84 - 226） ×Corylus heterophyl-la Fish, y, Corylus aveliana L. 4 Liaozhen No. 7＇（82 -11） andCorylus heterophylla Fish. ×Corylus avellana ‘Da- wei’（84 - 254） were cultivated in Horqin Sandy Land,the effects of different propagation time on rooting of Cory-lus heterophylla XCorylus avellanwere analyzed. Result shows that the rooting rate？ rooting number, rooting di-ameter and rooting length of the three kinds of Corylus heterophylla X Corylus avellan decrease as the time post-pone 〉 and from June 30 〉 the indexes decrease obviously. In the comparison,the optimal time for propagation is from June 25 to June 30.