The experiment on selection pollination tree of local pear variety-Ruanerli and Changbali were conducted,the resulrs indicated the Shenbuzhi variety was used as pollination tree of Ruanerli and Dongguo and Shenbuzhi were used as pollination tree of Changbali.

Lishu County in the northeast is a base of commodity grain in China.

Breeding report on Jianbawang, a bud mutation of Jianba pear cultivar;