It should be propagated in the first half of June by fully enclosed moisturizing method. In areas with lateral shading, loose and fertile sandy land is selected as cutting bed; Cut off the newly lignified branches of that year, cut them into ear segments about 15cm long, usually 2-3 nodes, insert them into the seedbed, and bury them to a depth of about 1/2-2/3 of the ear length, leaving only 2 leaves outside the soil, then cover them with plastic film for sealing and moisturizing, and then build a shed for shade. Generally, it can take root after 30 days, and the survival rate can reach over 90%.