"借助压条法" can be translated as "by means of layering (method)" or "using the layering technique".
Here are some example sentences to illustrate the usage:
1、 This plant can be propagated by means of layering (method).
(这种植物可以通过压条法繁殖。)
2、 They are using the layering technique to propagate this rare species.
(他们正在使用压条法来繁殖这种珍稀物种。)