为加快楸树繁育推广,采用安徽省林业科学研究院提供的＂8611＂和＂4002＂优良品种,开展了楸树芽插繁育试验。经试验发现,温棚催芽产芽量是自然萌芽量的3.38倍,双层温棚扦插成活率较高,温棚温度应控制在25～35℃条件下,30 d可生根成活,幼苗生长正常;4月上中旬是楸树出芽的高峰期,也是揪树嫩芽扦插的最佳时期;营养土应在扦插当天消毒效果最好;经调查分析,两品种芽插苗大田定植后地径、高度生长无明显差别。%To speed up the promotion of Catalpa bungei propagation,experiments on bud cuttage propagation of Catalpa bungei were carried out with the fine quality varieties of ＂8611＂ and ＂4002＂ provided by Anhui Academy of Forestry.The results showed that the number of buds produced in the greenhouses is 3.38 times higher than that of buds produced in the natural environment.The survival rate of the cuttings is higher in double-layer greenhouses.In the greenhouses with controlled temperatures between 25℃ and 35℃,the cuttings of Catalpa bungei would take roots and survive in 30 days,and the saplings grow well.Mid-April is the peak time of sprouting for Catalpa bungei,which is also the best time for bud cuttage.Disinfection of the cover soil shall be done on the same day of bud cottage,which could produce the best results.According to the investigation and analysis,there are no significant differences in the increments of the basal diameter and height between the cuttage saplings of the two varieties after field planting.
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