Abstract：‘Qingyu No.7’is a new breed of processed middle and late maturity Jerusalem artichoke，which was selected and bred by single plant system．The whole growth period was about 175 days，the plant height was 160-200 cm，and the number of branches was 17-22．The tubers were nodular，with red skin and white fl esh，average tuber weight 36.2 g，smooth surface and few fi brous roots．The dry matter content is 192.0 g·kg-1，soluble sugar content is 57.0 g·kg-1，crude protein content is 20.6 g·kg-1，and crude fi ber content is 6.7 g·kg-1．The yield can reach 87 t·hm-2，which is suitable for planting in riparian land and shallow mountains in Qinghai Province．
