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油松是河北省迁西县的主要树种之一。近几年我们对油松髓心形成层贴接的时间、技术方式进行了如下总结。1嫁接时间春季嫁接以冷库贮穗效果好,贮藏期以10～25d为宜。夏秋季可利用油松当年
Pinus tabulaeformis is one of the main tree species in Qianxi County, Hebei Province. In recent years, we stick to the pith core formation time, technical methods were summarized as follows. 1 grafting time in spring grafted cold storage spike effect, storage period to 10 ~ 25d appropriate. Summer and autumn can be used pine year