For screening suitable oil-sunflower varieties according to the climate characteristics and culti-vation mode of the Heilonggang area, eight oil-sunflower varieties which have large cultivated area in north China plain except Heilonggang area were evaluated by comparing the growth period, agronomic traits,resistance to main diseases and yields. The results showed that S567 and Xinkui No.22 are suitable varieties for planting in the Heilonggang area, they have the advantages of shorter growth period, better ...