毛白杨“一条鞭”嫁接育苗技术

Discussion on Grafting and Seedling Technique of "One Whip" of Chinese White poplar

结合育苗生产实践,从毛白杨砧木的选择与培育、"一条鞭"嫁接技术、"一条鞭"扦插技术等生产环节总结归纳了北京地区毛白杨"一条鞭"嫁接育苗的关键技术。实践证明:北京地区毛白杨嫁接育苗以"一条鞭"嫁接繁育为宜,育苗成功的关键技术环节为:1选择培育好砧木。以小美旱杨、大青杨、大官杨为最佳砧木,砧木培育以株行距0.2m×1m为宜,亩产量3300株/亩。2适时交错嫁接。毛白杨接芽不能一直在砧木的同一侧嫁接,必须相互错开,要求毛白杨接芽东南西北分散嫁接。3晒芽扦插。即插条扦插时,毛白杨接芽必须露在外面"晒芽",忌毛白杨接芽埋在土中。4及时抹芽去蘖,促进苗木茁壮成长。5及时进行中耕、除草及病虫害防治等田间管理工作。

Combined with the practice of seedling productiotl, the paper summarized key technology of grafting and seedling of Chinese white poplar--one whip in Beijmg area trom tne seiecnon rootstock, grafting of ＂one whip＂, cutting technology and other production processes. The result showed that it is advisable to transplant the seedlings of Chinese white poplar in Beijing area with ＂one whip＂. The key technical as- pects are as {ollows. （1） Poplaris, Populus, dakuanens are as the appropriate rootstock. The rootstock spacing of 0. 2X 1m is appropriate. And the per mu yield of strains is 3300. （2）Timely staggered grafting. The poplar bud cannot always be on the same side of rootstocks. It must be staggered requiring poplar bud southeast northwest scattered grafting, which is beneficial to bud wound healing. （3） Sun bud cutting Known as the cuttings of Chinese white pop- lar. Bud must be exposed, known as the ＂Sun bud＂, which can promote the poplar bud germination because poplar bud buried in the soil will affect the survival rate. （4）Timely bud defoliation to promote seedling growth. （5）Timely cultivation, weed and pest control field management.