紫丁香是北方寒冷地区优良绿化树种。但是随着紫丁香树龄的增长,枝条大量丛生和老化,长势衰退,有必要将紫丁香的外部形态通过嫁接进行改良。为此,于1990年春,用紫丁香为接穗,水曲柳为砧木,进行了灌木乔化的嫁接试验。 Lilac is an excellent afforestation species in the northern cold regions. However, with the age of lilacs growing, the branches were heavily tufted and aged and declined. It was necessary to improve the external morphology of lilac by grafting. To this end, in the spring of 1990, with lilac as a scion, ash for the rootstocks, shrubs of the grafting test.