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我们于1977年开始进行了水曲柳种子园的嫁接试验,已取得初步经验,现介绍如下。一、砧木、接穗的选取1. 砧木。从苗圃中选择2年生生长健壮,无病虫害的苗木,用两种方法定植:一种是先定植在种子园中,然后嫁接;另一种是先在苗圃中嫁接,3年后再定植在种子园中。2. 接穗。一般可在11月下旬开始采穗,一直到翌年4月均可,但以每年3月为最好。接穗选优树树冠中、上部的枝条,采后放入冰
We started the grafting trial of ash seed orchard in 1977 and we have got preliminary experience. First, the rootstock, scion selection 1. Rootstock. Choose from 2-year-old nursery grow robust, pest-free seedlings, planted in two ways: one is first planted in the seed garden and then grafted; the other is the first grafting in the nursery, 3 years after planting in the seed Park. Scion Generally start earning in late November, until the following April can be, but in March each year as the best. Scion selection tree crown, the upper branches, after harvest into the ice