Grafting can join scions with desirable qualities to rootstock that is strong and resists disease and insects. Smaller trees can be grafted with older scions.

• 嫁接法可以将嫩芽的高品质和砧木的壮实、抗病、防虫有机地结合利用，幼小的砧木也可以嫁接上老树的嫩芽。