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一九七五年春季,为了适应泡桐大面积发展,我们进行了泡桐扦插育苗试验,从目前生长情况看,已成活的泡桐苗子,高达152厘米。通过试验,我们初步认为,泡桐扦插应注意以下几个问题:一、插时大田气温不再出现负值为宜。我们认为四月上、中旬为宜。二、切泡桐插穗时,一般掌握长度一市尺合适,还应注意插穗下边的腋芽痕迹,距离下端1—2厘米较好。
In the spring of 1975, in order to adapt to the large-area development of Paulownia, we carried out the Paulownia cuttage nursery test. From the current growth situation, the existing Paulownia seedlings reached 152 cm. Through the experiment, we initially believe that Paulownia cuttings should pay attention to the following questions: First, insert the field temperature is no longer negative appears appropriate. We think April and mid-month should be appropriate. Second, cut Paulownia cuttings, the general length of a city to grasp the appropriate length, should also pay attention to cuttings below the axillary bud traces from the lower end of 1-2 cm better.